CN106933015B - The control method of projection arrangement and projection arrangement - Google Patents
The control method of projection arrangement and projection arrangement Download PDFInfo
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- CN106933015B CN106933015B CN201710250327.8A CN201710250327A CN106933015B CN 106933015 B CN106933015 B CN 106933015B CN 201710250327 A CN201710250327 A CN 201710250327A CN 106933015 B CN106933015 B CN 106933015B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000005284 excitation Effects 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims description 24
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000010287 polarization Effects 0.000 description 26
- 238000010586 diagram Methods 0.000 description 8
- 239000003086 colorant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ORFSSYGWXNGVFB-UHFFFAOYSA-N sodium 4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonic acid Chemical compound COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C3)C(=CC(=C4N)S(=O)(=O)O)S(=O)(=O)O)O)OC)N=NC5=C(C6=C(C=C5)C(=CC(=C6N)S(=O)(=O)O)S(=O)(=O)O)O.[Na+] ORFSSYGWXNGVFB-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Astronomy & Astrophysics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention provides a kind of projection arrangement and its control method, which includes first and second light source module, light guide module, fluorescent powder wheel, colour wheel and processing module；The first light beam that first light source module provides forms the second light beam through light guide module；Second light beam is incident to excitation area and generates third light beam, and the second light beam reflects to form the 4th light beam through reflecting region, and third, the 4th light beam form the five, the 6th light beams via light guide module；The 7th light beam that second light source module provides passes through notch and is incident to light guide module the 8th light beam of formation；Colour wheel receives the five, the 6th and the 8th light beam；When switching to high brightness mode, first output electric current of processing module control first light source module is so that when the second light beam is incident to excitation area, the first output of adjustment electric current is the first electric current and the first output of adjustment electric current is the second electric current when the second light beam is incident to reflecting region, and increases the second output electric current of second light source module.
Description
Technical Field
The present invention relates to the field of projection, and in particular, to a projection apparatus and a control method of the projection apparatus.
Background
In a conventional projection apparatus of a laser light source, a laser light source is basically used in combination with a yellow fluorescent wheel, and a color wheel is used to generate red and green lights required for dividing yellow light generated by the yellow fluorescent wheel into a projection image of the projection apparatus, and a violet-blue light generated by the laser light source is used as a blue light required for the projection image of the projection apparatus. Therefore, the color of the laser light source emitting the violet-blue light does not conform to the pure blue in the human vision, which causes the problem of the violet image projected by the projection device, and the quality of the image is not good.
In addition, in the prior art, the projection apparatus usually needs to have a high brightness mode, and in the high brightness mode, the problem of yellow image on the image projected by the projection apparatus with the above-mentioned structure occurs, so that the quality of the image is not good.
Disclosure of Invention
The present invention is directed to a projection apparatus and a control method of the projection apparatus to solve the above problems.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a projection apparatus comprising: the device comprises a first light source module, a light guide module, a fluorescent powder wheel, a second light source module, a color wheel and a processing module; the first light source module is used for providing a first light beam, and the first light beam has a first wavelength; the light guide module is arranged on a transmission path of the first light beam, and the first light beam forms a second light beam through the light guide module; the fluorescent powder wheel is arranged on a transmission path of the second light beam, the fluorescent powder wheel comprises a gap, an excitation area and a reflection area, the second light beam enters the excitation area and is excited by the excitation area to generate a third light beam, the third light beam is yellow light, the third light beam forms a fifth light beam through the light guide module, the second light beam enters the reflection area and is reflected by the reflection area to form a fourth light beam, the fourth light beam has the first wavelength, and the fourth light beam forms a sixth light beam through the light guide module; the second light source module and the light guide module are respectively arranged at two opposite sides of the fluorescent powder wheel, the second light source module is used for emitting a seventh light beam when the fluorescent powder wheel rotates to the gap and is opposite to the second light source module, the seventh light beam is green light, the seventh light beam penetrates through the gap to be incident to the light guide module, and the eighth light beam is formed by the seventh light beam through the light guide module; the color wheel is used for receiving the fifth light beam, the sixth light beam and the eighth light beam to form light beams required by picture projection, and the light guide module is also used for guiding the fifth light beam, the sixth light beam and the eighth light beam to project to the color wheel; the processing module is coupled to the first light source module and the second light source module, and is configured to control a first output current of the first light source module when the projection apparatus is switched to a high brightness mode, so as to adjust the first output current to a first current when the second light beam is incident on the excitation area and adjust the first output current to a second current when the second light beam is incident on the reflection area, and increase the second output current of the second light source module, where the first current is a maximum current and is greater than the second current.
Preferably, the light guide module includes: a spectroscope and a quarter wave plate; the spectroscope is arranged on the transmission path of the first light beam; the quarter-wave plate is arranged on a transmission path of the first light beam, the first light beam passes through the quarter-wave plate to form the second light beam after being reflected by the light splitting mirror, the third light beam passes through the quarter-wave plate to form the fifth light beam, the fifth light beam passes through the light splitting mirror to be incident on the color wheel, the fourth light beam passes through the quarter-wave plate to form the sixth light beam, the sixth light beam passes through the light splitting mirror to be incident on the color wheel, the seventh light beam passes through the notch to be incident on the quarter-wave plate, the seventh light beam passes through the quarter-wave plate to form the eighth light beam, and the eighth light beam passes through the light splitting mirror to be incident on the color wheel.
Preferably, the light guide module includes: a spectroscope and a quarter wave plate; the spectroscope is arranged on the transmission path of the first light beam; the quarter-wave plate is arranged on a transmission path of the first light beam, the first light beam passes through the light splitter and then passes through the quarter-wave plate to form the second light beam, the third light beam passes through the quarter-wave plate to form the fifth light beam, the fifth light beam is reflected by the light splitter and then enters the color wheel, the fourth light beam passes through the quarter-wave plate to form the sixth light beam, the sixth light beam is reflected by the light splitter and then enters the color wheel, the seventh light beam passes through the notch and then enters the quarter-wave plate, the seventh light beam passes through the quarter-wave plate to form the eighth light beam, and the eighth light beam is reflected by the light splitter and then enters the color wheel.
Preferably, an included angle between the optical axis of the first light beam incident to the beam splitter and the beam splitter is in a range of 40 degrees to 50 degrees.
Preferably, the excitation region is a yellow phosphor region.
Preferably, the phosphor wheel further comprises: and the light splitting sheet is arranged at the gap to form the reflecting area.
Preferably, the projection apparatus further comprises: a light valve and a projection lens; the light valve is used for receiving the ninth light beam emitted by the color wheel and converting the ninth light beam into an image light beam; the projection lens is used for receiving and projecting the image light beam.
Preferably, the first wavelength is any value in the range of 445nm to 465 nm.
In a second aspect, the present invention provides a method for controlling a projection apparatus, applied to the projection apparatus, the projection apparatus comprising: the device comprises a first light source module, a light guide module, a fluorescent powder wheel, a second light source module and a color wheel; the first light source module is used for providing a first light beam, and the first light beam has a first wavelength; the light guide module is arranged on a transmission path of the first light beam, and the first light beam forms a second light beam through the light guide module; the fluorescent powder wheel is arranged on a transmission path of the second light beam, the fluorescent powder wheel comprises a gap, an excitation area and a reflection area, the second light beam enters the excitation area and is excited by the excitation area to generate a third light beam, the third light beam is yellow light, the third light beam forms a fifth light beam through the light guide module, the second light beam enters the reflection area and is reflected by the reflection area to form a fourth light beam, the fourth light beam has the first wavelength, and the fourth light beam forms a sixth light beam through the light guide module; the second light source module and the light guide module are respectively arranged at two opposite sides of the fluorescent powder wheel, the second light source module is used for emitting a seventh light beam when the fluorescent powder wheel rotates to the gap and is opposite to the second light source module, the seventh light beam is green light, the seventh light beam penetrates through the gap to be incident to the light guide module, and the eighth light beam is formed by the seventh light beam through the light guide module; the color wheel is used for receiving the fifth light beam, the sixth light beam and the eighth light beam to form light beams required by picture projection, and the light guide module is also used for guiding the fifth light beam, the sixth light beam and the eighth light beam to project to the color wheel; the method comprises the following steps:
judging whether the projection device is switched to a high-brightness mode;
when the projection device is switched to a high-brightness mode, the first output current of the first light source module is controlled so that the first output current is adjusted to be the first current when the second light beam is incident on the excitation area and the second output current is adjusted to be the second current when the second light beam is incident on the reflection area, and the second output current of the second light source module is increased, wherein the first current is the maximum current and is greater than the second current.
Preferably, the light guide module includes: a spectroscope and a quarter wave plate; the spectroscope is arranged on the transmission path of the first light beam; the quarter-wave plate is arranged on a transmission path of the first light beam, the first light beam passes through the quarter-wave plate to form the second light beam after being reflected by the light splitting mirror, the third light beam passes through the quarter-wave plate to form the fifth light beam, the fifth light beam passes through the light splitting mirror to be incident on the color wheel, the fourth light beam passes through the quarter-wave plate to form the sixth light beam, the sixth light beam passes through the light splitting mirror to be incident on the color wheel, the seventh light beam passes through the notch to be incident on the quarter-wave plate, the seventh light beam passes through the quarter-wave plate to form the eighth light beam, and the eighth light beam passes through the light splitting mirror to be incident on the color wheel; or,
the light guide module includes: a spectroscope and a quarter wave plate; the spectroscope is arranged on the transmission path of the first light beam; the quarter-wave plate is arranged on a transmission path of the first light beam, the first light beam passes through the light splitter and then passes through the quarter-wave plate to form the second light beam, the third light beam passes through the quarter-wave plate to form the fifth light beam, the fifth light beam is reflected by the light splitter and then enters the color wheel, the fourth light beam passes through the quarter-wave plate to form the sixth light beam, the sixth light beam is reflected by the light splitter and then enters the color wheel, the seventh light beam passes through the notch and then enters the quarter-wave plate, the seventh light beam passes through the quarter-wave plate to form the eighth light beam, and the eighth light beam is reflected by the light splitter and then enters the color wheel.
Compared with the prior art, the projection device and the control method of the projection device provided by the invention have the advantages that the first light-emitting module and the second light-emitting module are arranged, the second light-emitting module emits green light, the light-emitting time of the second light-emitting module is the time when the notch of the fluorescent powder wheel rotates to the position corresponding to the second light-emitting module, when the projection device is in a high-brightness mode, the first output current of the first light source module is controlled so that the first current of the second light beam incident to the excitation area is the maximum current and is larger than the second current of the second light beam incident to the emission area, and more yellow light can be generated to provide high brightness required by the projection device, in addition, when the projection device is in the high-brightness mode, the output current of the second light source module is increased, so that the light beam reflected by the reflection area and the green light emitted by the second light source module can generate more mixed light, and further, the problem that the picture is yellow and purple is avoided under the condition that the high brightness of the projection picture is ensured.
Drawings
Fig. 1 is a block diagram of a projection apparatus according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another projection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another projection apparatus according to an embodiment of the invention;
fig. 5 is a flowchart illustrating a control method of a projection apparatus according to an embodiment of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Fig. 1 is a block diagram of a projection apparatus according to an embodiment of the invention; fig. 2 is a schematic structural diagram of a projection apparatus 100 according to an embodiment of the invention. As shown in fig. 1 and 2, the projection apparatus 100 may include: the light source module includes a first light source module 10, a light guide module 20, a phosphor wheel 30, a first driving module 60 of the phosphor wheel 30, a second light source module 40, a color wheel 50, a second driving module 70 of the color wheel 50, and a processing module 80. The first light source module 10 is configured to provide a first light beam L1, and the first light beam L1 has a first wavelength, specifically, the first wavelength is any value in a range from 445nm (nanometer) to 465nm, for example, the first wavelength is 445nm, 450nm, 455nm, 460nm, or 465 nm. The light guide module 20 is disposed on a transmission path of the first light beam L1, the light guide module 20 is located between the first light source module 10 and the phosphor wheel 30, the light guide module 20 is configured to guide the first light beam L1 to be projected to the phosphor wheel 30, and the first light beam L1 forms a second light beam L2 through the light guide module 20. The phosphor wheel 30 includes a notch, an excitation area and a reflection area, the phosphor wheel 30 is disposed on the transmission path of the second light beam L2, specifically, the excitation area is coated with yellow phosphor, that is, the excitation area is a yellow phosphor area, and preferably, the reflection area is disposed at the notch; when the second light beam L2 is incident on the excitation area, the second light beam L2 is excited by the excitation area to generate a third light beam L3, the third light beam L3 is yellow light, the third light beam L3 forms a fifth light beam L5 through the light guide module 20, the fifth light beam L5 is incident on the color wheel 50, when the second light beam L2 is incident on the reflection area, the second light beam L2 is reflected by the reflection area to form a fourth light beam L4, the fourth light beam L4 has a first wavelength, the fourth light beam L4 forms a sixth light beam L6 through the light guide module 20, and then the sixth light beam L6 is projected to the color wheel 50. The second light source module 40 and the light guide module 20 are respectively disposed at two opposite sides of the phosphor wheel 30, the second light source module 40 is configured to emit a seventh light beam L7 when the phosphor wheel 30 rotates to a position where the notch is opposite to the second light source module 40, the seventh light beam L7 is green light, the seventh light beam L7 passes through the notch and is incident on the light guide module 20, and the seventh light beam L7 forms an eighth light beam L8 through the light guide module 20. The color wheel 50 receives the fifth light beam L5, the sixth light beam L6, and the eighth light beam L8 to form three primary colors of red, green, and blue, and a yellow light beam required for projecting a picture. The processing module 80 is coupled to the first light source module 10, the second light source module 40, the first driving module 60 of the phosphor wheel 30, and the second driving module 70 of the color wheel 50, and when the projection apparatus 100 is switched to the high brightness mode, the processing unit is configured to control the first output current of the first light source module 10 such that the first output current is adjusted to be the first current when the second light beam L2 is incident to the excitation area and the first output current is adjusted to be the second current when the second light beam L2 is incident to the reflection area, and increase the second output current of the second light source module 40, where the first current is the maximum current and the first current is greater than the second current. For example, when the processing module 80 determines that the projection apparatus 100 is switched from the normal brightness mode to the high brightness mode, the first output current of the first light source module 10 is controlled such that the first output current of the first light source module 10 is increased to be the maximum current when the second light beam L2 is incident on the excitation region and the first output current is adjusted to be the second current when the second light beam L2 is incident on the reflection region, and the second output current of the second light source module 40 is increased from the fourth current to the fifth current.
The projection apparatus 100 may further include: the light valve is used for receiving the ninth light beam emitted from the color wheel 50 and converting the ninth light beam into an image light beam, and the projection lens is used for receiving and projecting the image light beam to project a picture.
Preferably, the phosphor wheel 30 further includes a beam splitter disposed at the gap to form the reflective region.
Fig. 3 is a schematic structural diagram of another projection apparatus 100' according to an embodiment of the invention. The projection apparatus 100 'shown in fig. 3 is different from the projection apparatus 100 described above in that the light guide module 20' includes: a beam splitter 3 and a quarter wave plate 4. The quarter-wave plate 4 serves to change the polarization of the polarized light to a quarter-phase difference after the polarized light passes through the quarter-wave plate 4, for example, to change the S-polarized light to circularly polarized light. The beam splitter 3 and the quarter-wave plate 4 are disposed on a transmission path of the first light beam L11, the first light beam L11 has a first wavelength and a first polarization state, the first light beam L11 is reflected by the beam splitter 3 and then passes through the quarter-wave plate 4 to form a second light beam L21, and the second light beam L21 is a circularly polarized light beam. The second light beam L21 is incident on the excitation area, the second light beam L21 is excited by the excitation area to generate a third light beam L31, the third light beam L31 is yellow light, the third light beam L31 passes through the quarter-wave plate 4 to form a fifth light beam L51, and the fifth light beam L51 passes through the beam splitter 3 and is projected to the color wheel 50. The second light beam L21 is incident on the reflection region, the second light beam L21 is reflected by the reflection region to form a fourth light beam L41, the fourth light beam L41 is a circularly polarized light beam, the fourth light beam L41 passes through the quarter-wave plate 4 to form a sixth light beam L61, the sixth light beam L61 has the second polarization state, and the sixth light beam L61 passes through the beam splitter 3 and is projected to the color wheel 50. When the phosphor wheel 30 rotates to the notch and faces the second light source module 40, the second light source module 40 emits a seventh light beam L71, the seventh light beam L71 passes through the notch and enters the quarter-wave plate 4, the seventh light beam L71 passes through the quarter-wave plate 4 to form an eighth light beam L81, and the eighth light beam L81 passes through the beam splitter 3 and is projected to the color wheel 50. The beam splitter 3 reflects a light beam having a first polarization state and allows a light beam having a second polarization state to pass through, specifically, the first polarization state is a P polarization state and the second polarization state is an S polarization state, or the first polarization state is an S polarization state and the second polarization state is a P polarization state. Preferably, the included angle between the optical axis of the first light beam L11 incident on the beam splitter 3 and the beam splitter 3 is 40 degrees to 50 degrees, preferably 45 degrees, but in practical applications, the included angle may be set to 41 degrees, 42 degrees, 43 degrees, 44 degrees, 46 degrees, and the like. By arranging the quarter-wave plate, the blue required by the projection picture of the light beam emitted by the first light-emitting module can be enhanced and improved, and the problem that the projection picture is purple is further improved.
Fig. 4 is a schematic structural diagram of another projection apparatus 100 ″ according to an embodiment of the invention. The projection apparatus 100' shown in fig. 4 is different from the projection apparatus 100 described above in that the light guide module 20 ″ includes: a beam splitter 3 "and a quarter wave plate 4. The quarter-wave plate 4 serves to change the polarization of the polarized light to a quarter-phase difference after the polarized light passes through the quarter-wave plate 4, for example, to change the S-polarized light to circularly polarized light. The beam splitter 3 ″ and the quarter-wave plate 4 are disposed on a transmission path of the first light beam L12, the first light beam L12 has a first wavelength and a first polarization state, the first light beam L12 passes through the beam splitter 3 ″ and then passes through the quarter-wave plate 4 to form a second light beam L22, and the second light beam L22 is a circularly polarized light beam. The second light beam L21 is incident on the excitation area, the second light beam L22 is excited by the excitation area to generate a third light beam L31, the third light beam L31 is yellow light, the third light beam L32 passes through the quarter-wave plate 4 to form a fifth light beam L52, and the fifth light beam L52 is reflected by the beam splitter 3 ″ and then projected to the color wheel 50. The second light beam L22 is incident on the reflection region, the second light beam L22 is reflected by the reflection region to form a fourth light beam L42, the fourth light beam L42 is a circularly polarized light beam, the fourth light beam L42 passes through the quarter-wave plate 4 to form a sixth light beam L62, the sixth light beam L62 has a second polarization state, and the sixth light beam L62 is reflected by the beam splitter 3 ″ and then projected to the color wheel 50. When the phosphor wheel 30 rotates to the notch and faces the second light source module 40, the second light source module 40 emits a seventh light beam L72, the seventh light beam L72 passes through the notch and enters the quarter-wave plate 4, the seventh light beam L72 passes through the quarter-wave plate 4 to form an eighth light beam L82, and the eighth light beam L82 is reflected by the beam splitter 3 ″ and then projected to the color wheel 50. The beam splitter 3 ″ reflects the light beam having the second polarization state and allows the light beam having the first polarization state to pass through, specifically, the first polarization state is P polarization state and the second polarization state is S polarization state, or the first polarization state is S polarization state and the second polarization state is P polarization state. Preferably, the included angle between the optical axis of the first light beam L12 incident on the beam splitter 3 "and the beam splitter 3" is 40 degrees to 50 degrees, preferably 45 degrees, but in practical applications, the included angle may be set to 41 degrees, 42 degrees, 43 degrees, 44 degrees, 46 degrees, and the like. By arranging the quarter-wave plate, the blue required by the projection picture of the light beam emitted by the first light-emitting module can be enhanced and improved, and the problem that the projection picture is purple is further improved.
The configuration of the light guide module 20 is described with reference to fig. 3 and 4, but the light guide module 20 may be configured by other elements in other embodiments of the present invention, and the present invention is not limited to this.
Fig. 5 is a flowchart illustrating a control method of a projection apparatus according to an embodiment of the present invention. The control method of the projection apparatus shown in fig. 5 is applied to the projection apparatus 100, 100' or 100 ″ described above, and the control method of the projection apparatus includes the steps of:
s501, judging whether the projection device is switched to a high-brightness mode.
S502, when the projection apparatus is switched to the high brightness mode, controlling the first output current of the first light source module to adjust the first output current to be a first current when the second light beam is incident on the excitation area and to adjust the first output current to be a second current when the second light beam is incident on the reflection area, and increasing the second output current of the second light source module to be a third current, where the first current is a maximum current and the first current is greater than the second current.
The invention provides a projection device and a control method of the projection device, which are characterized in that a first light-emitting module and a second light-emitting module are arranged, the second light-emitting module emits green light, the light-emitting time of the second light-emitting module is the time when a notch of a fluorescent powder wheel rotates to a position corresponding to the second light-emitting module, when the projection device is in a high-brightness mode, the first output current of the first light source module is controlled so that the first current of a second light beam incident to an excitation area is the maximum current and is larger than the second current of the second light beam incident to an emission area, and more yellow light can be generated to provide the high brightness required by the projection device, in addition, when the projection device is in the high-brightness mode, the output current of the second light source module is increased, so that more mixed light can be generated by the light beam reflected by a reflection area and the green light emitted by the second light source module, and further, under the condition that the high brightness of a projection, the problem that the picture is yellow and purple is avoided.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (10)
1. A projection apparatus, comprising:
the first light source module is used for providing a first light beam, and the first light beam has a first wavelength;
the light guide module is arranged on a transmission path of the first light beam, and the first light beam forms a second light beam through the light guide module;
the fluorescent powder wheel is arranged on a transmission path of the second light beam, and comprises a notch, an excitation area and a reflection area, the second light beam enters the excitation area and is excited by the excitation area to generate a third light beam, the third light beam is yellow light, the third light beam forms a fifth light beam through the light guide module, the second light beam enters the reflection area and is reflected by the reflection area to form a fourth light beam, the fourth light beam has the first wavelength, and the fourth light beam forms a sixth light beam through the light guide module;
the second light source module and the light guide module are respectively arranged at two opposite sides of the fluorescent powder wheel and used for emitting a seventh light beam when the fluorescent powder wheel rotates to the gap and is opposite to the second light source module, the seventh light beam is green light, the seventh light beam penetrates through the gap to be incident to the light guide module, and the seventh light beam forms an eighth light beam through the light guide module;
the light guide module is used for guiding the fifth light beam, the sixth light beam and the eighth light beam to be projected to the color wheel;
the processing module is used for controlling a first output current of the first light source module when the projection device is switched to a high-brightness mode so as to adjust the first output current to be a first current when the second light beam is incident on the excitation area and adjust the first output current to be a second current when the second light beam is incident on the reflection area, and the second output current of the second light source module is increased, wherein the first current is the maximum current and is larger than the second current.
2. The projection apparatus according to claim 1, wherein the light guide module comprises:
a spectroscope arranged on the transmission path of the first light beam; and
the fourth light beam passes through the quarter wave plate to form a sixth light beam, the sixth light beam passes through the dichroic mirror to enter the color wheel, the seventh light beam passes through the notch to enter the quarter wave plate, the seventh light beam passes through the quarter wave plate to form an eighth light beam, and the eighth light beam passes through the dichroic mirror to enter the color wheel.
3. The projection apparatus according to claim 1, wherein the light guide module comprises:
a spectroscope arranged on the transmission path of the first light beam; and
the fourth light beam passes through the quarter wave plate to form a sixth light beam, the sixth light beam is reflected by the beam splitter and then enters the color wheel, the seventh light beam passes through the notch and then enters the quarter wave plate, the seventh light beam passes through the quarter wave plate to form an eighth light beam, and the eighth light beam is reflected by the beam splitter and then enters the color wheel.
4. A projection apparatus according to claim 2 or 3, wherein the optical axis of the first light beam incident on the beam splitter and the beam splitter form an angle in the range of 40 degrees to 50 degrees.
5. The projection apparatus according to claim 1 wherein the excitation region is a yellow phosphor region.
6. The projection apparatus according to claim 1, wherein the phosphor wheel further comprises: and the light splitting sheet is arranged at the gap to form the reflecting area.
7. The projection device of claim 1, wherein the projection device further comprises:
the light valve is used for receiving the ninth light beam emitted by the color wheel and converting the ninth light beam into an image light beam; and
and the projection lens is used for receiving and projecting the image light beam.
8. The projection apparatus according to claim 1, wherein the first wavelength is any value in the range of 445nm to 465 nm.
9. A control method of a projection device is applied to the projection device, and is characterized in that the projection device comprises: the device comprises a first light source module, a light guide module, a fluorescent powder wheel, a second light source module and a color wheel; the first light source module is used for providing a first light beam, and the first light beam has a first wavelength; the light guide module is arranged on a transmission path of the first light beam, and the first light beam forms a second light beam through the light guide module; the fluorescent powder wheel is arranged on a transmission path of the second light beam, the fluorescent powder wheel comprises a gap, an excitation area and a reflection area, the second light beam enters the excitation area and is excited by the excitation area to generate a third light beam, the third light beam is yellow light, the third light beam forms a fifth light beam through the light guide module, the second light beam enters the reflection area and is reflected by the reflection area to form a fourth light beam, the fourth light beam has the first wavelength, and the fourth light beam forms a sixth light beam through the light guide module; the second light source module and the light guide module are respectively arranged at two opposite sides of the fluorescent powder wheel, the second light source module is used for emitting a seventh light beam when the fluorescent powder wheel rotates to the gap and is opposite to the second light source module, the seventh light beam is green light, the seventh light beam penetrates through the gap to be incident to the light guide module, and the seventh light beam forms an eighth light beam through the light guide module; the color wheel is used for receiving the fifth light beam, the sixth light beam and the eighth light beam to form light beams required by picture projection, and the light guide module is also used for guiding the fifth light beam, the sixth light beam and the eighth light beam to project to the color wheel; the method comprises the following steps:
judging whether the projection device is switched to a high-brightness mode;
when the projection device is switched to a high-brightness mode, the first output current of the first light source module is controlled so that the first output current is adjusted to be the first current when the second light beam is incident on the excitation area and the second output current is adjusted to be the second current when the second light beam is incident on the reflection area, and the second output current of the second light source module is increased, wherein the first current is the maximum current and is greater than the second current.
10. The method of claim 9, wherein the light guide module comprises:
a spectroscope arranged on the transmission path of the first light beam; and
the fourth light beam passes through the quarter wave plate to form a sixth light beam, the sixth light beam passes through the beam splitter to be incident on the color wheel, the seventh light beam passes through the notch to be incident on the quarter wave plate, the seventh light beam passes through the quarter wave plate to form an eighth light beam, and the eighth light beam passes through the beam splitter to be incident on the color wheel; or,
the light guide module includes:
a spectroscope arranged on the transmission path of the first light beam; and
the fourth light beam passes through the quarter wave plate to form a sixth light beam, the sixth light beam is reflected by the beam splitter and then enters the color wheel, the seventh light beam passes through the notch and then enters the quarter wave plate, the seventh light beam passes through the quarter wave plate to form an eighth light beam, and the eighth light beam is reflected by the beam splitter and then enters the color wheel.
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| CN201710250327.8A CN106933015B (en) | 2017-04-17 | 2017-04-17 | The control method of projection arrangement and projection arrangement |
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| CN201710250327.8A CN106933015B (en) | 2017-04-17 | 2017-04-17 | The control method of projection arrangement and projection arrangement |
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| CN108535944B (en) * | 2018-04-16 | 2021-04-13 | 成都九天光学技术有限公司 | Laser light source and control method thereof |
| CN115202140B (en) | 2021-04-14 | 2024-08-13 | 中强光电股份有限公司 | Projection device and brightness control method thereof |
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| CN101937165A (en) * | 2009-06-30 | 2011-01-05 | 卡西欧计算机株式会社 | Light source device, projection device and projection method |
| CN103091953A (en) * | 2011-10-31 | 2013-05-08 | 台达电子工业股份有限公司 | Light emitting module and display device |
| CN103430093A (en) * | 2011-03-18 | 2013-12-04 | Nec显示器解决方案株式会社 | Phosphor-equipped illumination optical system and projector |
| CN104301637A (en) * | 2013-07-19 | 2015-01-21 | 浙江大华技术股份有限公司 | Method and device for image restoration |
| CN104349148A (en) * | 2014-11-21 | 2015-02-11 | 北京思比科微电子技术股份有限公司 | Method for changing green scene effect of image in real time |
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| CN101937165A (en) * | 2009-06-30 | 2011-01-05 | 卡西欧计算机株式会社 | Light source device, projection device and projection method |
| CN103430093A (en) * | 2011-03-18 | 2013-12-04 | Nec显示器解决方案株式会社 | Phosphor-equipped illumination optical system and projector |
| CN103091953A (en) * | 2011-10-31 | 2013-05-08 | 台达电子工业股份有限公司 | Light emitting module and display device |
| CN104301637A (en) * | 2013-07-19 | 2015-01-21 | 浙江大华技术股份有限公司 | Method and device for image restoration |
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