WO2019190020A1 - Laser pointer - Google Patents

Abstract

The present invention relates to a laser pointer comprising: a housing having an inner space formed therein; a laser light source unit provided in the housing so as to emit a laser light; an operation part provided to be movable along an operation groove formed on the housing; and a first lens and a second lens which are arranged on an optical path along which the laser light moves inside the inner space of the housing, and which are capable of movement relative to each other, wherein when the relative distance between the first lens and the second lens is adjusted while the first lens and/or the second lens move by being linked to the operation part, the laser light is switched to a point light source or a linear light source according to the relative distance between the first lens and the second lens. According to the present invention, a user can emit a laser light by freely selecting a point or line form through operation of the operation part, and thus the convenience of use of the laser pointer is improved and a use range of the laser pointer is broadened.

Description

Laser display

The present invention relates to a laser display device, and more particularly, to a laser display device that enables a user to selectively display points or lines using a laser at a desired point.

In general, a laser display device is used to indicate a spaced position using a laser or to measure a level. For example, a laser pointer, which is one of the laser display devices, includes a lens configured in front of the laser diode and a switch that supplies and cuts off a battery, which is a power source, and a battery in the rear. The laser pointer is operated in such a manner that when the user operates a switch to supply the battery power to the laser diode, the laser diode is turned on and the laser is irradiated in front of the laser pointer.

Such a laser pointer serves as an indicator rod for indicating a chart or a presentation screen at a meeting, a construction site, and a briefing session.

Conventional laser pointers only point to any one of the spaced apart locations, and there is an inconvenience in that a separate filter must be used to indicate a desired line or pattern.

The present invention is to solve the problems of the prior art as described above, it is an object of the present invention to provide a laser display device that the user can selectively display points or lines.

The present invention provides a housing that forms an interior space therein, a laser light source unit installed in the housing to irradiate laser light, an operation unit installed to be movable along an operation groove formed in the housing, and within the interior space of the housing. A first lens and a second lens disposed on an optical path through which the laser light moves, and including at least one of the first lens and the second lens moving in association with the operation unit; When the relative distance between the lens and the second lens is adjusted, the laser light is converted into a point light source and a line light source according to the relative distance between the first lens and the second lens yarn.

The first lens is fixed by a lens fixing unit adjacent to the laser light source unit, and the second lens is mounted on the lens control unit 300 interlocked with the operation unit to adjust the distance from the first lens.

The lens control unit 300 has a protrusion formed so that the operation unit is interlocked to turn on / off the laser light source unit, a lens seating unit on which the second lens is seated;

It is composed of a connecting portion connecting the lens seat and the body.

A guide rail is further formed in the inner space of the housing so that the body of the lens control unit 300 can move in accordance with the movement of the manipulation unit.

The first lens is formed of a convex lens, and the second lens is a convex or concave lens.

The laser light is converted into a line light source as the second lens is far from the first lens, and is converted into a point light source as the distance between the second lens and the first lens is closer.

The convex lens of the first lens is a plano-convex lens.

The second lens is a plano-convex lens, and a plano-concave lens.

According to another embodiment of the present invention, the inner space is formed inside, the first housing and the second housing is divided into the front, the rear and the laser light source unit is installed in the first housing to irradiate the laser light And an operation unit installed to be movable along an operation groove formed in the first housing, and disposed on an optical path through which the laser light moves in an inner space of the first housing and the second housing, respectively. A first lens and a second lens, wherein at least one of the first lens and the second lens is moved relative to the movement of the first housing or the second housing, and is relative to the first lens and the second lens. When the distance is adjusted, laser light is converted into a point light source and a line light source according to the relative distance between the first lens and the second lens.

The first housing and the second housing are adjusted relative distance in a telescopic manner.

The first housing and the second housing have threads formed on the outer circumferential surface or the inner circumferential surface thereof, respectively, so that the relative distance is adjusted by rotating the first housing or the second housing.

The laser display device according to the present invention as described above has the following effects.

First, the laser display device according to the present invention can be irradiated by the user can freely select the laser light in the form of dots or lines by operating the operation unit to improve the ease of use of the laser display device, the scope of use of the laser display device is widened It works.

Second, according to the present invention, there is no need to insert or replace a separate filter in order to irradiate the laser light in the form of a line, simply by moving the operation unit can change the laser light in the form of a line to improve the convenience of use have.

Third, since the range (length) of laser light irradiation in the form of a line varies according to the degree of operation of the operation unit in the present invention, the laser display device of the present invention can be used in more various ways, and the user can intuitively use it easily. There is also an effect.

Fourthly, according to the present invention, since the relative distance between the two lenses is controlled to emit in the form of dots or lines, the number of parts is not greatly increased and the internal structure is very simple compared to the conventional laser display devices, and thus the manufacturing is easy.

1 is an external perspective view of a housing constituting a laser display device according to the present invention.

2 is an exploded perspective view of a laser display device according to the present invention.

3 is a cross-sectional view of the internal structure of the housing when the laser display according to the present invention emits a point light source.

Fig. 4 is a cross-sectional view of the internal structure of the housing when the laser display device according to the present invention emits a linear light source.

Fig. 5 is an exploded perspective view of the internal structure of the housing when the laser display according to the present invention emits a point light source.

Fig. 6 is an exploded perspective view of the internal structure of the housing when the laser display device according to the present invention emits a linear light source.

FIG. 7 shows the light path when the laser light passes through the first lens and the second lens, which is the convex lens, of the laser display device according to the present invention.

Fig. 8 shows the optical path when the laser light passes through the first lens and the second lens, which is the concave lens, of the laser display device according to the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing an embodiment of the present invention, if it is determined that the detailed description of the related known configuration or function is to interfere with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in explaining the component of the Example of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be "connected", "coupled" or "connected".

In the foregoing description, the present invention is not necessarily limited to these embodiments, although all of the components constituting the embodiments according to the present invention are described as being combined or operating in combination. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be inherent unless specifically stated otherwise, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

First, the configuration of the laser display device will be described.

1 is an external perspective view of a laser display device. The housing 100 constituting the laser display device is divided into a first housing 101 and a second housing 102. An operation groove 105 is formed in the first housing 101 so that the operation unit 104 capable of turning on / off the power of the laser display device moves along a predetermined path. The manipulation unit 104 protrudes out of the first housing 101, and when the manipulation unit 104 is pressed, the lens control unit 300 to be described later moves in association with the manipulation unit 104. When the operation unit 104 is pressed, the lens control unit 300 interlocks to turn on / off the power of the laser display device. When the operation unit 104 is pressed once, the laser display device is turned on. When the laser is emitted and the operation unit 104 is moved along the operation groove 105 formed at a predetermined path in the first housing 101, the lens control unit 300 moves in conjunction with the point light source. Sunlight source is selectively emitted.

With reference to FIG. 2, the structure of a laser display apparatus is demonstrated in detail.

An exit unit 103 is installed at the ends of the first housing 101 and the second housing 102. The output unit 103 is fixedly coupled to be wrapped in the first housing 101 and the second housing 102.

The battery 400 is disposed on the opposite side of the exit unit 103. The battery 400 is electrically connected to the laser light source unit 200 for emitting a laser, and the laser light source unit 200 and the battery 400 are disposed at intervals, and the intervals of the lens control unit 300 will be described later. The configurations are placed.

When the laser light source unit 200 emits the laser, the laser light source unit 200 passes through the first lens L1 and the second lens L2 positioned on the path of the laser, and the laser is emitted through the emission unit 103.

The first lens L1 is placed directly in front of the laser light source unit 200 and fixed by the lens fixing unit 304 to focus the laser emitted from the laser light source unit 200. The laser passing through the first lens L1 passes through the second lens L2 and is then emitted through the emission unit 103.

The second lens L2 is seated on the lens seat 303 of the lens controller 300. Referring to FIG. 2, the lens controller 300 includes a body 301 for moving the lens controller 300 in cooperation with the manipulation unit 104, and a lens seat 303 in which the second lens L2 is seated. ) And a connecting portion 302 connecting the lens seating portion 303 and the body portion 301, each of which may be coupled through mechanical coupling or may be integrally molded.

The body part 301 is disposed between the battery 400 and the laser light source part 200 to electrically connect each other. When the manipulation part 104 is pressed, the body part 301 is pressed together with the laser. The power of the laser display device may be switched from OFF to ON by electrically connecting the light source unit 200 and the battery 400.

5 and 6 show the configuration of the body portion 301 of the lens control unit 300 in detail. A protrusion 301 ′ protrudes from the upper portion of the body portion 301, and the protrusion 301 ′ is mechanically connected to the operation unit 104. The protrusion 301 ′ is preferably formed integrally with the body portion 301 such that the lens control unit 300 moves according to the movement of the manipulation unit 104.

3 and 4 illustrate a shape in which the second lens L2 is seated on the lens seat 303. The lens seating portion 303 has a groove formed in accordance with the shape of the lens so that the second lens (L2) is seated.

The lens seating portion 303 is formed by extending the connecting portion 302, the connecting portion 302 is connected to the body portion 301. The lens seating portion 303, the connection portion 302, the body portion 301 is preferably formed integrally.

The connecting portion 302 is seated in the second housing 102, the second housing 102 is formed with a guide rail 106 to allow the body portion 301 to slide.

Therefore, when the operation part 104 protruding to the first housing 101 is moved, the body part 301 of the lens control part 300 connected to the operation part 104 moves along the guide rail 106. The distance between the first lens L1 and the second lens L2 is adjusted. At this time, since the body part 301, the connection part 302, and the lens seating part 303 of the lens control part 300 are all formed integrally, when the operation part 104 is moved, the entire configuration of the lens control part 300 is moved. In response to the movement of the operation unit 104, the body portion 301 is a sliding movement between the guide rail 106.

Next, the principle of selectively emitting the point light source and the line light source in the laser display device will be described.

7 and 8, the laser emitted from the laser light source unit is emitted as a point light source, and passes through the output unit 103 through the first lens L1 and the second lens L2.

The first lens L1 is fixed so as not to move by the lens fixing part 304 to serve as a condenser lens and to further densify the laser emitted from the laser light source unit. The first lens L1 increases the density of the laser so that even further objects can be accurately pointed by the laser.

Since the first lens L1 collects light, the first lens L1 is formed as a convex lens. Preferably, the first lens L1 may be a plano-convex lens having one flat surface. As shown in FIG. 7, the first lens L1 may be disposed such that a flat surface is provided on an opposite side of the laser light source unit.

The second lens L2 is seated on the lens seat 303 and moves, and emits a dense laser beam passing through the first lens L1 as a point light source or a line light source. This depends on whether the second lens L2 is within or outside the focal length f of the first lens L1, and FIG. 7 shows that the second lens L2 is the focal point of the first lens L1. (f) shows a moving shape disposed outside the distance, and FIG. 8 illustrates a moving shape in which the second lens L2 is disposed within the focal length f of the first lens L1.

Since the focal length f of the first lens L1 depends on the shape of the first lens L1, the focal length f may be adjusted by processing differently as necessary.

 When the second lens L2 disposed outside the focal length f of the first lens L1 is formed as a convex lens, the first lens L1 and the second lens as shown in FIGS. 7A and 7B are illustrated. When the distance between L2 is close, the light is emitted to the point light source, and as the distance between the first lens L1 and the second lens L2 increases, the laser is gradually converted from the point light source to the line light source and emitted.

On the contrary, when the second lens L2 disposed within the focal length f of the first lens L1 is formed as a concave lens, as shown in FIGS. 8A and 8B, the first lens L1 and the first lens L1 may be formed. When the distance between the two lenses L2 is far, the light is emitted to the point light source, and as the distance between the first lens L1 and the second lens L2 is closer, the laser is gradually converted from the point light source to the line light source.

In this case, the convex lens of the second lens L2 is a plano-convex lens having one flat surface as shown in FIGS. 7 and 8, and the concave lens has one flat surface as the concave lens. It may be a plano-concave lens consisting of.

Next, an operation method of the laser display device will be described.

When the laser display device presses the operation unit 104 in the OFF state, the body unit 301 connected to the operation unit 104 is pressed together, and the laser light source unit 200 and the battery 400 are electrically connected to each other. Turn on the power of the laser display.

When the operation unit 104 is pressed to switch the power to the ON state, the laser emitted from the laser light source unit is emitted as a point light source. Since the distance between the first lens L1 and the second lens L2 is short in the state where the operation unit 104 is not moved, the laser in the point light source state is emitted through the output unit 103 as it is.

When the operation part 104 is moved along the operation groove 105 formed in the first housing 101, the body part 301 of the lens control part 300 moves together in the same direction as the operation part 104. . The connection part 302 and the lens seating part 303 also move in the same direction as the operation part 104 in association with the movement of the body part 301, and at this time, the second lens seated on the lens seating part 303. (L2) moves together. Since the first lens L1 is fixed in front of the laser light source unit 200, the distance between the first lens L1 and the second lens L2 becomes greater as the operation unit 104 moves.

As the second lens L2 moves away from the focal point f of the first lens L1, the laser is gradually converted from a point light source to a linear light source, and the operation unit 104 is disposed at the end of the operation groove 105. When reaching, the longest line light source is emitted through the exit unit 103.

When the operation unit 104 moves to the first position of the operation groove 105 again, the second lens L2 moves in association with each other, and the distance between the first lens L1 and the second lens L2 is moved. Gets closer.

When the second lens L2 is close to the focal point f of the first lens L1, the laser emitted as the line light source returns to the point light source.

When the laser output from the laser light source unit 200 presses the operation unit 104 once more in the state of returning to the point light source, the power of the laser display device that is ON is switched to OFF.

Although not shown in the drawings, as another embodiment of the present invention, the first housing 101 and the second housing 102 constituting the housing 100 are not divided into upper and lower parts as shown in FIG. 2. The distance between the first lens (L1) and the second lens (L2) by adjusting the distance between the first housing 101 and the second housing 102 without the configuration of the lens control unit 300 divided into front and rear You can also adjust.

In detail, the first lens L1 is fixed to the inside of the first housing 101, and the second lens L2 is fixed to the inside of the second housing 102 so that the first housing 101 is fixed. Alternatively, the distance between the first lens L1 and the second lens L2 may be adjusted by adjusting the relative distance of the second housing 102. In order to realize such a configuration, the first housing 101 and the second housing 102 may slide in a telescopic manner with different diameters, and the outer surface of the first housing 101 and the second housing 102 may slide. Threads may be formed on inner surfaces of the housing 102 to adjust the distance by rotating the first housing 101 or the second housing 102.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (11)

A housing forming an internal space therein, A laser light source unit installed in the housing to irradiate laser light; An operation unit installed to be movable along an operation groove formed in the housing; A first lens and a second lens disposed on an optical path through which the laser light moves in an inner space of the housing, and movable relative to each other; When at least one of the first lens and the second lens moves in conjunction with the operation unit and the relative distance between the first lens and the second lens is adjusted, according to the relative distance between the first lens and the second lens. And a laser light is converted into a point light source and a line light source. The method of claim 1, The first lens is fixed by a lens fixing portion adjacent to the laser light source portion, And the second lens is mounted on a lens control unit interlocked with the operation unit to adjust a distance from the first lens. The method of claim 2, wherein the lens control unit A protrusion formed to interlock with the operation unit to turn on / off the laser light source; A lens seat to which the second lens is seated; And a connecting portion connecting the lens seating portion and the body portion. The method of claim 1, wherein the inner space of the housing And a guide rail is formed to move the body of the lens control unit according to the movement of the manipulation unit. The method of claim 1, The first lens is formed of a convex lens, And the second lens is a convex or concave lens. The method of claim 5, wherein the laser light And the second lens is converted into a line light source as the distance from the first lens increases, and the laser display device is converted into a point light source as the distance between the second lens and the first lens gets closer. . The method of claim 5, And a convex lens of the first lens is a plano-convex lens. The method of claim 5, And the second lens is a plano-convex lens and a concave lens plano-concave lens. Forming an internal space therein, the first housing and the second housing is divided into the front, rear and the distance is adjusted, A laser light source unit installed in the first housing and irradiating laser light; A first control unit disposed to move along an operation groove formed in the first housing, and an optical path through which the laser light moves in an inner space of the first housing and the second housing, respectively, and being relatively movable to each other; A lens and a second lens, When at least one of the first lens and the second lens moves in association with the movement of the first housing or the second housing and the relative distance between the first lens and the second lens is adjusted, the first lens and the second lens are adjusted. And a laser light is converted into a point light source and a line light source according to the relative distance between two lenses. The method of claim 9, The first housing and the second housing is a laser display device, characterized in that the relative distance is adjusted in a telescopic manner. The method of claim 9, And a thread is formed on an outer circumferential surface or an inner circumferential surface of the first housing and the second housing, respectively, so that the relative distance is adjusted by rotating the first housing or the second housing.

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