WO2013078862A1 - 投影装置及其控制方法 - Google Patents
投影装置及其控制方法 Download PDFInfo
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- WO2013078862A1 WO2013078862A1 PCT/CN2012/078091 CN2012078091W WO2013078862A1 WO 2013078862 A1 WO2013078862 A1 WO 2013078862A1 CN 2012078091 W CN2012078091 W CN 2012078091W WO 2013078862 A1 WO2013078862 A1 WO 2013078862A1
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- light
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- state light
- laser
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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
- G03B21/2033—LED or laser light sources
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- G03B21/2053—Intensity control of illuminating light
-
- 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
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/08—Sequential recording or projection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
- H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
Definitions
- the present invention relates to the field of projection technology, and in particular to a projection apparatus and a control method thereof. Background technique
- At least two solid-state light sources based on laser diodes (LEDs) or light emitting diodes (LEDs) are used to directly or indirectly generate at least two primary colors of light of different colors.
- the operating power of each solid state light source is a constant value. Even in the case where the at least two primary colors of light are required to be alternately output, the solid-state light sources are continuously in operation, and the alternate output of the at least two primary colors of light is achieved by filtering of the filter color wheel, thereby causing the projection device Higher energy consumption.
- the technical problem to be solved by the present invention is to provide a projection apparatus and a control method thereof to reduce the power consumption of the projection apparatus.
- a technical solution adopted by the present invention is to provide a projection apparatus including at least two solid state light sources, a synchronization device, and a control device.
- the at least two solid state light sources are for directly or indirectly producing at least two primary colors of light of different colors and alternately outputting.
- a synchronization device is used to generate the synchronization signal.
- the control device is configured to respectively control the operating power of the at least two solid-state light sources in a pulsed manner according to the synchronization signal, so that at least in a part of the time period, one of the at least two solid-state light sources is in a normal working state, and in the at least two solid-state light sources The other is in a state of energy saving.
- the at least two solid state light sources comprise a first solid state light source for generating an excitation light
- the projection device further comprises a wavelength conversion device, a first color wheel and a first driving device.
- a wavelength conversion device is used to convert the excitation light into a laser light.
- the first color wheel includes a first segment and a second segment that are incident on the first color wheel by the laser.
- the first driving device is configured to drive the first color wheel such that the first segment and the second segment are alternately disposed on the propagation path of the laser, so that the laser is filtered by the first segment to generate the first primary color light.
- the second primary color light is generated by the laser being filtered through the second section.
- the wavelength conversion device comprises a second color wheel and a second driving device.
- a wavelength conversion material is disposed on the second color wheel.
- the second driving means is for driving the second color wheel such that the spot formed by the excitation light on the second color wheel acts on the wavelength converting material along a predetermined path, and the wavelength converting material converts the excitation light into a laser light.
- the at least two solid state light sources comprise a second solid state light source for generating a third primary color light
- the projection device further comprises an optical path combining device.
- the optical path combining device is configured to combine the laser light and the third primary color light, and the laser and the third primary color light are combined by the optical path combining device to be incident on the first color wheel, and the first color wheel further comprises a third segment.
- the first driving device drives the first color wheel such that the first segment, the second segment and the third segment are alternately disposed on the propagation path of the laser and the third primary color light, and the third primary color light passes through the third segment transmission.
- the at least two solid state light sources comprise a second solid state light source for generating a third primary color light
- the projection device further comprises an optical path combining device.
- the optical path combining device is configured to combine the first primary color light, the second primary color light, and the third primary color light
- the first color wheel further includes a third segment
- the first driving device drives the first color wheel to make the first segment
- the second section and the third section are alternately disposed on the propagation path of the laser.
- the synchronizing device detects the moving position of the first color wheel, thereby generating a synchronization signal.
- the control device adjusts the operating power of the first solid-state light source to the first working power when the first segment is disposed on the propagation path of the laser, and is to be the first when the second segment is disposed on the propagation path of the laser.
- the operating power of the solid state light source is adjusted to a second operating power, and the operating power of the first solid state light source is adjusted to be smaller than the first operating power and the second operating power when the third segment is disposed on the propagation path of the laser.
- control device will be the first solid when the third section is disposed on the propagation path of the laser
- the state light source turns off or adjusts the operating power of the first solid state light source such that the first solid state light source remains in a warm state.
- control device adjusts the operating power of the second solid-state light source to the third operating power when the third segment is disposed on the propagation path of the laser, and is disposed in the first segment or the second segment to be transmitted by the laser.
- the operating power of the second solid state light source is adjusted to be less than the third operating power when in the path.
- control device turns off the second solid state light source or adjusts the operating power of the second solid state light source when the first segment or the second segment is disposed on the propagation path of the laser light to maintain the second solid state light source in a warm state.
- the first color wheel further includes a fourth segment, the fourth segment transmits the laser and the third primary light, and the first driving device drives the first color wheel such that the first segment, the second segment, and the third region
- the segment and the fourth segment are alternately disposed on the propagation path of the laser and the third primary light, and when the fourth segment is disposed on the propagation path of the laser and the third primary light, the control device controls the first solid state light source and the The two solid state light sources are in normal working condition at the same time.
- a technical solution adopted by the present invention is: providing a control method of a projection apparatus, comprising: directly or indirectly generating at least two primary colors of light of different colors and alternately output by using at least two solid-state light sources;
- the device generates a synchronization signal; respectively, controlling, by the control device, the operating power of the at least two solid-state light sources in a pulse manner according to the synchronization signal, so that at least one of the at least two solid-state light sources is in a normal working state at least in a part of the time period, and the at least two The other of the solid state light sources is in a power saving state.
- the first solid state light source of the at least two solid state light sources to generate an excitation light; converting the excitation light into a laser beam by using a wavelength conversion device; driving the first segment and the second segment by using the first driving device a first color wheel, such that the first segment and the second segment of the color wheel are alternately disposed on the propagation path of the laser, so that the laser is filtered by the first segment to generate the first primary light, and the laser passes through The second segment is filtered to produce a second primary color of light.
- the third primary color light is generated by the second solid state light source of the at least two solid state light sources; the optical path is combined by the optical path combining device, and the optical path is combined by the laser and the third primary color light through the optical path combining device.
- the first color wheel After being merged, incident on the first color wheel; driving the first color wheel further provided with the third segment by using the first driving device, so that the first segment, the first segment
- the two segments and the third segment are alternately disposed on a propagation path of the laser and the third primary light, and the third primary light is transmitted through the third segment.
- the third primary color light is generated by the second solid state light source of the at least two solid state light sources; the first primary color light, the second primary color light and the third primary color light are optically combined by the optical path combining device; driven by the first driving device
- a first color wheel of the third segment is further disposed such that the first segment, the second segment, and the third segment of the color wheel are alternately disposed on the propagation path of the laser.
- the operating device adjusts the operating power of the first solid-state light source to the first operating power when the first segment is disposed on the propagation path of the laser, and the second segment is disposed on the propagation path of the laser. Adjusting the operating power of the solid state light source to the second working power, and adjusting the operating power of the first solid state light source to be smaller than the first working power and the second working power when the third segment is disposed on the propagation path of the laser, further Using the control device to adjust the operating power of the second solid-state light source to the third operating power when the third segment is disposed on the propagation path of the laser, and to set the propagation path of the laser in the first segment or the second segment The working power of the second solid state light source is adjusted to be smaller than the third working power.
- the projection apparatus and the control method thereof of the present invention are capable of controlling one of the at least two solid-state light sources to be in a normal working state at least for a part of the time period according to the synchronization signal, while controlling the The other of the at least two solid state light sources is in a power saving state, thereby reducing the energy consumption of the projection device while ensuring proper operation of the projection device.
- FIG. 1 is a schematic structural view of a first embodiment of a projection apparatus of the present invention
- Figure 2 is a front elevational view of the first color wheel in the projection apparatus shown in Figure 1;
- FIG. 3 is a schematic view showing the brightness of each primary color light when the first color wheel shown in FIG. 2 is used;
- FIG. 4 is a schematic diagram showing the operating power of the first solid state light source when the first color wheel shown in FIG. 2 is used;
- Figure 5 is a schematic view showing the operating power of the second solid-state light source when the first color wheel shown in Figure 2 is used;
- Figure 6 is a front view of another first color wheel in the projection apparatus shown in Figure 1;
- Figure 7 is a schematic view showing the brightness of each primary color light when the first color wheel shown in Figure 6 is used;
- 6 is a schematic diagram of the operating power of the first solid state light source when the first color wheel is shown;
- Figure 9 is a schematic view showing the operating power of the second solid-state light source when the first color wheel shown in Figure 6 is used;
- Figure 10 is a schematic structural view of a second embodiment of the projection apparatus of the present invention.
- Figure 11 is a flow chart showing a control method of the projection apparatus of the present invention. detailed description
- FIG. 1 is a schematic structural view of a first embodiment of a projection apparatus of the present invention.
- the projection apparatus of this embodiment mainly includes a light source system 10, a light modulation system 11, a screen 12, a synchronizing device 13, and a control device 14.
- the light source system 10 includes a first solid state light source 101, a second solid state light source 102, a first color wheel 103, a second color wheel 104, a first driving device 105, a second driving device 106, and an optical path combining device 107. And light collecting devices 108 and 109.
- the first solid state light source 101 is for generating an excitation light, and the generated excitation light is incident on the second color wheel 104.
- a wavelength converting material (not shown) is provided on the second color wheel 104, and the wavelength converting material converts the excitation light into a laser beam.
- the second driving device 106 drives the second color wheel 104 such that the spot light formed by the excitation light generated by the first solid-state light source 101 on the second color wheel 104 acts on the wavelength conversion material along a predetermined path, thereby avoiding the excitation light in the second
- the temperature formed by the spot formed on the color wheel 104 acting on the same position of the wavelength converting material for a long time is too high.
- the second color wheel 104 and the second drive unit 106 may also be replaced by other wavelength conversion devices.
- the second color wheel 104 and the second driving device 106 are replaced by doping a suitable wavelength converting material into the packaging material of the light emitting diode.
- the laser light output from the second color wheel 104 is collected by the light collecting device 108, incident on the optical path combining device 107, transmitted by the optical path combining device 107, collected by the light collecting device 109, and incident on the first color wheel 103.
- light collecting devices 108 and 109 can be lenses or other suitable optical components.
- the first color wheel 103 is provided with The first section 1031, the second section 1032, and the third section 1033.
- the first primary color light is generated by the laser being filtered by the first section 1031, and the second primary color light is generated after being filtered by the second section 1032.
- the second solid state light source 102 produces a third primary color light.
- the third primary color light generated by the second solid state light source 102 is reflected by the optical path combining means 107, and is further combined with the laser light path generated by the second color wheel 104.
- the optical path combining means 107 may be a spectroscopic filter or other suitable optical element.
- the laser light and the third primary color light are combined by the optical path combining means 107 to be incident on the first color wheel 103.
- the first driving device 105 drives the first color wheel 103 such that the first segment 1031, the second segment 1032, and the third segment 1033 are alternately disposed on the propagation path of the laser and the third primary light, the first segment 1031 filters the incident laser light and the third primary color light and transmits the first primary color light, the second segment 1032 filters the incident laser light and the third primary color light and transmits the second primary color light, and the third segment 1033 Only the incident primary laser light and the third primary color light of the third primary color light are transmitted, thereby causing the first color wheel 103 to alternately output the first primary color light, the second primary color light, and the third primary color light of different colors.
- the third segment 1033 may be provided with a scattering material or a scattering microstructure to scatter the third primary light to decohere the third primary light.
- the first primary color light, the second primary color light, and the third primary color light are respectively image-modulated by the light modulation system 11 and incident on the screen 12.
- the first solid state light source 101 may be a blue, ultraviolet or near ultraviolet laser tube or a light emitting diode.
- the second solid state light source 102 can be a blue laser tube or a light emitting diode.
- the wavelength converting material on the second color wheel 104 is a yellow fluorescent material that converts the excitation light generated by the first solid state light source 101 into yellow light.
- the first segment 1031, the second segment 1032, and the third segment 1033 on the first color wheel 103 are a red light filter region, a green light filter region, and a blue light transmission region, respectively, and the first segment 1031 can be incident.
- the yellow and blue light filters and outputs red light
- the second segment 1032 is capable of filtering the incident yellow and blue light and outputting green light
- the third segment 1033 is only for the incident yellow light and blue light in the blue light.
- Transmission is performed so that the first color wheel 103 alternately generates three primary colors of red, green, and blue light (RGB).
- RGB red, green, and blue light
- the brightness of red light R, green light G and blue light B is as shown in Fig. 3.
- the above-described light source system 10 can also be used to generate three primary colors of other colors.
- the synchronizing means 13 detects the moving position of the first color wheel 103, thereby generating a synchronizing signal. Specifically, the synchronizing means 13 can detect a specific mark provided on the first color wheel 103 and generate a synchronizing pulse each time the specific mark is detected. In other embodiments, the synchronizing device 13 may also generate a synchronizing signal by other means, such as detecting the brightness of the primary color light of a particular color.
- the control device 14 determines, based on the synchronization signal, the time at which the first segment 1031, the second segment 1032, and the third segment 1033 are disposed on the propagation paths of the laser light and the third primary color light, and Adjusting the operating power of the first solid state light source 101 to the first operating power when the first segment 1031 is disposed on the propagation path of the laser and the third primary light, and is disposed in the second segment 1032 on the laser and the third
- the operating power of the first solid-state light source 101 is adjusted to the second operating power when the primary color light travels. At this time, the first solid state light source 101 is in a normal working state.
- the control device 14 further adjusts the operating power of the second solid state light source 102 to the third operating power when the third section 1033 is disposed on the propagation path of the laser light and the third primary color light. At this time, the second solid state light source 102 is in a normal operating state.
- the first primary color light, the second primary color light, and the third primary color light can be adjusted to a desired brightness to meet the requirements of the projection display.
- the first operational power and the second operational power are shown to be the same, but in practical applications, the first operational power, the second operational power, and the third operational power may be arbitrarily adjusted according to the desired luminance of each primary color light.
- control device 14 further adjusts the operating power of the second solid-state light source 102 to be smaller when the first segment 1031 or the second segment 1032 is disposed on the propagation path of the laser and the third primary light.
- the third working power is such that the second solid-state light source 102 is in a power-saving state, and the operating power of the first solid-state light source 101 is adjusted to be smaller than the first when the third segment 1033 is disposed on the propagation path of the laser and the third primary light.
- the operating power and the second operating power cause the first solid state light source 101 to be in a power saving state.
- the control device 14 turns off the second solid state light source 102 or adjusts the second solid state light source 102 when the first segment 1031 or the second segment 1032 is disposed on the propagation path of the laser and the third primary light. Power, maintaining the second solid state light source 102 in a warm-up status, and turning off or adjusting the first solid state light source 101 when the third segment 1033 is disposed on the propagation path of the laser and the third primary light.
- the operating power of the first solid state light source 101 maintains the first solid state light source 101 in a warm state.
- the first solid state light source 101 and the two solid-state light sources 102 When the first solid state light source 101 and the two solid-state light sources 102 are maintained in the warm-up state, the first solid-state light source 101 and the second solid-state light source 102 can be maintained at a predetermined temperature, so that the normal operating state can be entered more quickly, and the time of state switching can be reduced.
- the control device 14 controls the operating power of the first solid-state light source 101 and the second solid-state light source 102 in a pulsed manner, the first solid-state light source 101 and the second solid-state light source 102 are alternately in a normal working state and a power-saving state, and further Reduce the energy consumption of the projection device while ensuring that the projection device is working properly.
- the first solid-state light source 101 and the second solid-state light source 102 operate in a pulsed manner, the heat generation of the first solid-state light source 101 and the second solid-state light source 102 is reduced, so that it can be driven by a higher operating power.
- the output of the higher brightness light and in the case of the same output brightness, can also reduce the number of the first solid state light source 101 and the second solid state light source 102 to reduce the cost of the system.
- the first color wheel 103 further includes a fourth section 1034 in addition to the first section 1031, the second section 1032, and the third section 1033.
- the first driving device 105 drives the first color wheel 103 such that the first segment 1031, the second segment 1032, the third segment 1033, and the fourth segment 1034 are alternately disposed after the optical path combining by the optical path combining device 107.
- the fourth segment 1034 transmits the laser light and the third primary color light, thereby outputting white light.
- the luminances of red light R, green light G, blue light B, and white light W are as shown in FIG. At this time, as shown in FIGS.
- the control device 14 controls the first solid state light source 101 and the The two solid-state light sources 102 are simultaneously in a normal working state, so that the first color wheel 103 outputs white light to the light modulation system 11 to achieve white light enhancement.
- the duty ratio of the first solid state light source 101 and the second solid state light source 102 increases, increasing the utilization thereof.
- Fig. 10 is a schematic structural view showing a second embodiment of the projection apparatus of the present invention.
- the projection apparatus of this embodiment mainly includes a light source system, a light modulation system 21, a screen 22, a synchronizing device 23, and a control device 24.
- the light source system includes a first solid state light source 201, a second solid state light source 202, a first color wheel 203, a second color wheel 204, a first driving device 205, a second driving device 206, Optical path combining device 207 and light collecting devices 208 and 209.
- the projection apparatus of this embodiment is different from the projection apparatus shown in FIG. 1 in that the second solid-state light source 202 and the optical path combining means 207 of the present embodiment are disposed on the downstream optical path of the first color wheel 203.
- the third primary color light generated by the second solid-state light source 202 is optically combined by the first primary color light and the second primary color light generated by the optical path combining means 207 and the first color wheel 203.
- the first color wheel 203 is also provided with a first section, a second section and a third section.
- the first segment, the second segment, and the third segment are alternately disposed on the propagation path of the laser light generated by the second color wheel 204 under the driving of the first driving device 205.
- the laser light generated by the second color wheel 204 is filtered by the first segment into the first primary color light, and the stimulated light generated by the second color wheel 204 is filtered by the second segment into the second primary color light.
- the control means 24 determines the time at which the first section, the second section and the third section are disposed on the propagation path of the laser light based on the synchronization signal generated by the synchronizing means 23.
- the control device 24 adjusts the operating power of the first solid-state light source 201 to the first operating power when the first segment is disposed on the laser-propagating path, and when the second segment is disposed on the laser-propagating path.
- the operating power of a solid state light source 201 is adjusted to a second operating power, and the operating power of the first solid state light source 201 is adjusted to be smaller than the first operating power and the second operating power when the third segment is disposed on the propagation path of the laser. .
- the control device 24 further adjusts the operating power of the second solid-state light source 202 to the third operating power when the third segment is disposed on the propagation path of the laser, and is disposed in the first segment or the second segment in the laser-receiving
- the operating power of the second solid state light source 202 is adjusted to be less than the third operating power when in the propagation path.
- the operating power of the second solid-state light source 202 should be Adjusting such that the third primary color light generated by the second solid state light source 202 has no effect on the first primary color light and the second primary color light, for example, the interference of the third primary color light on the first primary color light and the second primary color light is not affected by the human eye. observed.
- the control device 24 turns off the second solid-state light source 202 or adjusts the operating power of the second solid-state light source 202 when the first segment or the second segment is disposed on the laser-propagating path, so that the second solid-state light source 202 is maintained at Warming up, and turning off the first solid-state light source 201 or adjusting the operating power of the first solid-state light source 201 when the third section is disposed on the propagation path of the laser light such that the first solid-state light source is 201-dimensional Holding in warm state.
- the control device 24 controls the operating power of the first solid-state light source 201 and the second solid-state light source 202 in a pulsed manner, the first solid-state light source 201 and the second solid-state light source 202 are alternately in a normal working state and an energy-saving state, and further Reduce the energy consumption of the projection device while ensuring that the projection device is working properly.
- the first solid-state light source 201 and the second solid-state light source 202 operate in a pulsed manner, the heat generation of the first solid-state light source 201 and the second solid-state light source 202 is reduced, so that it can be driven by a higher operating power.
- the output of the higher brightness light and in the case of the same output brightness, can also reduce the number of the first solid state light source 201 and the second solid state light source 202 to reduce the cost of the system.
- the synchronizing device and the control device of the present invention are applicable to, in addition to the projection devices described in the first embodiment and the second embodiment, to at least two solid state light sources and are directly utilized by the at least two solid state light sources. Or various projection devices that indirectly produce at least two primary colors of light of different colors and alternately output.
- the control device respectively controls the operating power of the at least two solid-state light sources in a pulse manner according to the synchronization signal generated by the synchronization device, so that at least in a part of the time period, one of the at least two solid-state light sources is in a normal working state, and the at least The other of the two solid state light sources is in a power saving state, thereby reducing the energy consumption of the projection device.
- FIG. 11 is a flow chart showing a first embodiment of the control method of the projection apparatus of the present invention. As shown in FIG. 11, the control method of this embodiment includes the following steps.
- step S31 at least two primary colors of light of different colors and alternately output are directly or indirectly generated by at least two solid state light sources.
- This step can be implemented in the manner of the first embodiment and the second embodiment of the projection apparatus described above, and can be implemented in various manners well known in the art, and details are not described herein again.
- step S32 a synchronization signal is generated by the synchronizing means.
- the synchronization signal can be generated by detecting the moving position of the color wheel for generating the primary color light.
- step S33 the operating power of the at least two solid-state light sources is respectively controlled in a pulse manner according to the synchronization signal by the control device, so that at least one of the at least two solid-state light sources is in a normal working state at least in part of the period, while at least two solid states The other of the light sources is in the section Can state.
- This step can be implemented by the first embodiment and the second embodiment of the projection apparatus described above, and details are not described herein again.
- the projection apparatus of the present invention and the control method thereof are capable of controlling one of the at least two solid-state light sources to be in a normal working state at least for a part of a period of time according to a synchronization signal, while controlling the other of the at least two solid-state light sources to be in a power-saving state, and further Reduce the energy consumption of the projection device while ensuring that the projection device is working properly.
- the method for adjusting power in the present invention may be various, for example, a method of adjusting power by adjusting a duty ratio of a current, a voltage, or a periodic pulse, which are well-known technologies, and the specific implementation manner thereof I will not go into details here.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18187468.6A EP3432067B1 (en) | 2011-11-28 | 2012-07-03 | Projection device and control method thereof |
| EP12853696.8A EP2787390B1 (en) | 2011-11-28 | 2012-07-03 | Projection device and control method thereof |
| KR1020147013497A KR101897457B1 (ko) | 2011-11-28 | 2012-07-03 | 투영장치 및 그 제어 방법 |
| JP2014542684A JP6061311B2 (ja) | 2011-11-28 | 2012-07-03 | 投影装置およびその制御方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385139.9 | 2011-11-28 | ||
| CN201110385139.9A CN102645822B (zh) | 2011-11-28 | 2011-11-28 | 投影装置及其控制方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013078862A1 true WO2013078862A1 (zh) | 2013-06-06 |
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ID=46658722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2012/078091 Ceased WO2013078862A1 (zh) | 2011-11-28 | 2012-07-03 | 投影装置及其控制方法 |
Country Status (5)
| Country | Link |
|---|---|
| EP (2) | EP2787390B1 (zh) |
| JP (1) | JP6061311B2 (zh) |
| KR (1) | KR101897457B1 (zh) |
| CN (1) | CN102645822B (zh) |
| WO (1) | WO2013078862A1 (zh) |
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| CN106842790B (zh) * | 2012-09-28 | 2019-01-08 | 深圳市光峰光电技术有限公司 | 光源系统及相关投影系统 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3432067A1 (en) | 2019-01-23 |
| EP2787390A1 (en) | 2014-10-08 |
| EP3432067B1 (en) | 2021-11-03 |
| KR101897457B1 (ko) | 2018-09-12 |
| JP2015505976A (ja) | 2015-02-26 |
| JP6061311B2 (ja) | 2017-01-18 |
| KR20140097189A (ko) | 2014-08-06 |
| CN102645822B (zh) | 2014-12-10 |
| CN102645822A (zh) | 2012-08-22 |
| EP2787390B1 (en) | 2018-09-19 |
| EP2787390A4 (en) | 2016-01-13 |
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