CN210534521U - Light combining device, light source device and projection device - Google Patents
Light combining device, light source device and projection device Download PDFInfo
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- CN210534521U CN210534521U CN201921362514.6U CN201921362514U CN210534521U CN 210534521 U CN210534521 U CN 210534521U CN 201921362514 U CN201921362514 U CN 201921362514U CN 210534521 U CN210534521 U CN 210534521U
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Abstract
The utility model provides a close light device, light source device and projection arrangement, wherein, close light device includes array light source, array light source includes a plurality of elementary light sources, a plurality of elementary light sources constitute two or more elementary light source groups, wherein, array light source includes first array light source and second array light source at least; a plurality of reflection units, each reflection unit is configured to reflect the light beam of one of the light source groups to form a reflection light beam, and the reflection light beams are combined to form a combined light beam; the plurality of reflecting units are arranged in a staggered mode and are not in the same plane, so that the reflected light beams of one of the light source groups of the first array light source and the reflected light beams of one of the light source groups of the second array light source in the combined light beam are alternately arranged. According to the utility model provides a close light device can obtain energy and colour evenly distributed's the beam that closes, has reduced the width that closes the beam simultaneously, obtains the diameter littleer and more even facula.
Description
Technical Field
The utility model relates to an optics field particularly relates to a close light device, light source and projection system.
Background
When there are two or more light sources, sometimes it is necessary to combine the two or more light sources. The conventional light combining method mainly includes: (1) as shown in fig. 1A, two light sources are disposed on the same plane, and are combined by two reflectors respectively; (2) as shown in fig. 1B, two light sources are vertically disposed, one of which is directly directed, and the other is reflected by a reflector to combine light; (3) as shown in FIG. 1C, the light with polarization characteristics can be combined by means of a polarizer or a dichroic mirror, wherein one light is transmitted and the other light is reflected.
The traditional light source such as a fluorescent lamp, an incandescent lamp, an ultra-high performance lamp or a xenon lamp is difficult to achieve high efficiency and long service life. With the development of solid state light sources, Light Emitting Diodes (LEDs) and semiconductor lasers are gradually coming into the lighting and display markets. At present, the laser light source tends to be more and more miniaturized, and the laser used by the laser projector at present mainly comprises an array light source, and the volume of the laser light source is reduced by improving the density of the array.
However, when the brightness difference between two or more array light sources is too large or the wavelengths are not consistent, if the array light sources are combined by the above-mentioned conventional light combining method, the energy distribution of the combined light beam is not uniform and/or the color distribution is not uniform.
Therefore, a new light combining device is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
The utility model provides a close light device, include:
the array light source comprises a plurality of element light sources, the element light sources form two or more element light source groups, and the array light source at least comprises a first array light source and a second array light source;
a plurality of reflection units, each reflection unit is configured to reflect the light beam of one of the light source groups to form a reflection light beam, and the reflection light beams are combined to form a combined light beam;
the plurality of reflecting units are arranged in a staggered mode and are not in the same plane, so that the reflected light beams of one of the light source groups of the first array light source and the reflected light beams of one of the light source groups of the second array light source in the combined light beam are alternately arranged.
Further, the plurality of element light sources of each array light source are arranged in two or more rows, or the plurality of element light sources are arranged in two or more columns.
Further, the element light source group comprises a row of element light sources, a column of element light sources, a plurality of rows of element light sources or a plurality of columns of element light sources.
Further, each element light source group in the array light source is arranged in a consistent manner.
Further, the distance between the reflected light beams of the adjacent element light source groups of each array light source is larger than the distance between the adjacent element light source groups of the array light source.
Further, the distance between adjacent reflected light beams in the combined light beam is smaller than or equal to the distance between adjacent element light source groups of each array light source.
Further, the first array of light sources is different from the second array of light sources.
Furthermore, the reflecting units corresponding to the array light source are in a planar shape and are distributed in parallel, and the distances are equal.
The utility model also provides a light source device, it includes as above the device that closes light.
The utility model also provides a projection arrangement, it includes as above light source device.
According to the utility model provides a close light device through making a plurality of reflection unit staggered arrangement to make the reflected beam alternate arrangement who closes two or more array light sources in the light beam, thereby obtain energy and colour evenly distributed's the light beam that closes, reduced the width that closes the light beam simultaneously, obtain the diameter littleer and more even facula.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles and devices of the invention. In the drawings, there is shown in the drawings,
FIG. 1A is a light combining device according to one embodiment of the prior art;
FIG. 1B is a schematic diagram of a light combining device according to another embodiment of the prior art;
FIG. 1C is a schematic diagram of a light combining device according to another embodiment of the prior art;
fig. 2A is an array light source according to an embodiment of the present invention;
fig. 2B is an array light source according to another embodiment of the present invention;
fig. 3A is a light combining device according to an embodiment of the present invention;
fig. 3B is a light combining device according to another embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, detailed steps will be provided in the following description in order to explain the light combining device provided by the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
To adopting the tradition shown in fig. 1A-1C to close the light mode to a plurality of array light sources, especially the energy of light source and a plurality of array light sources of wavelength inequality when closing the light, the inhomogeneous and/or the inhomogeneous problem of color distribution of light beam energy distribution after closing the light, the utility model provides a new device that closes the light, as shown in fig. 3A-3B, include:
the array light source comprises a plurality of element light sources, the element light sources form two or more element light source groups, and the array light source at least comprises a first array light source and a second array light source;
a plurality of reflection units, each reflection unit is configured to reflect the light beam of one of the light source groups to form a reflection light beam, and the reflection light beams are combined to form a combined light beam;
the plurality of reflecting units are arranged in a staggered mode and are not in the same plane, so that the reflected light beams of one of the light source groups of the first array light source and the reflected light beams of one of the light source groups of the second array light source in the combined light beam are alternately arranged.
Illustratively, the array light source of the present invention includes, but is not limited to, semiconductor lasers and Light Emitting Diodes (LEDs). Each array light source comprises a plurality of element light sources, and further, the element light sources of each array light source are arranged in two or more rows, or the element light sources are arranged in two or more columns.
In one embodiment, the array light source may be a laser light source. At present, 445nm/30W lasers of Japan Riya are widely used, and the laser can emit blue laser, violet laser, ultraviolet laser, etc., but the invention is not limited to the above. Fig. 2A and 2B respectively show two package forms of a laser array light source, wherein fig. 2A shows a Bank-form package structure, the array light source including 8 element light sources (LD1, LD2, LD3, LD4, LD5, LD6, LD7, LD8) arranged in an array of 2 × 4; fig. 2B shows a package structure in the form of an MCL, the array light source comprising 20 element light sources arranged in a 4 x 5 array.
Illustratively, the two or more array light sources are approximately collimated light, e.g., with a divergence angle of less than 1 °. Optionally, the wavelengths of the two or more array light sources are the same or different, preferably, the wavelengths of the two or more array light sources are different, or the energy distributions are different, or the polarization directions are different.
Illustratively, the plurality of element light sources form two or more element light source groups, further, the element light source group includes a row of element light sources, a column of element light sources, a plurality of rows of element light sources or a plurality of columns of element light sources, and the arrangement of each element light source group in the array light sources is consistent. .
Exemplarily, the array light sources comprise at least a first array light source 1 and a second array light source 2. In one embodiment, as shown in fig. 3A and 3B, the light source device comprises a first array light source 1 and a second array light source 2, each array light source comprises two or more element light source groups, each light source group in each array light source is arranged in the same manner, preferably, the first array light source 1 and the second array light source 2 each comprise three element light source groups, wherein the light beams emitted by the three element light source groups of the first array light source 1 are respectively marked as light beams 11, 12 and 13, and the light beams emitted by the three element light source groups of the second array light source 2 are respectively marked as light beams 21, 22 and 23; wherein each element light source group comprises a row of element light sources, a column of element light sources, a plurality of rows of element light sources or a plurality of columns of element light sources, preferably, each element light source group comprises a column of element light sources.
Illustratively, the light combining device of the present invention comprises a plurality of reflection units, each of which is configured to reflect the light beam of one of the light source sets to form a reflected light beam, and a plurality of the reflected light beams are combined to form a combined light beam.
Illustratively, the reflecting units corresponding to the array light sources are in a planar shape, distributed in parallel and at equal distances. The plurality of reflection units are arranged in a staggered manner and are not in the same plane, so that the reflected light beams of one of the light source groups of the first array light source 1 and the reflected light beams of one of the light source groups of the second array light source 2 in the combined light beam are alternately arranged.
Illustratively, the reflection units correspond to the element light source groups one to one. As an example, the reflection unit includes a mirror, and further, the mirror is a bar mirror, and the corresponding group of the element light sources is a column of the element light sources.
In one embodiment, as shown in fig. 3A, the first array of light sources 1 and the second array of light sources 2 are arranged in parallel, i.e. the light beams 11, 12, 13 are parallel to the light beams 21, 22, 23, and the light beams 11, 12, 13 are incident on the mirrors 31, 32, 33 respectively and reflected to form reflected light beams 101, 102, 103; similarly, beams 21, 22 and 23 are incident on mirrors 34, 35 and 36, respectively, and are reflected to form reflected beams 201, 202 and 203. In another embodiment, as shown in fig. 3B, the first array of light sources 1 and the second array of light sources 2 are arranged vertically, i.e. the light beams 11, 12, 13 are perpendicular to the light beams 21, 22, 23, the light beams 11, 12, 13 are incident on the mirrors 31, 32, 33 respectively and reflected to form reflected light beams 101, 102, 103; the light beams 21, 22 and 23 are incident on the mirrors 34, 35 and 36 respectively and are reflected, and then incident on the mirrors 37, 38 and 39 to be reflected, and reflected light beams 201, 202 and 203 are formed after two reflections.
The utility model provides a beam combining device is the beam combining that will realize different array light sources, consequently in the beam combining that forms, including above-mentioned all reflected light beams 101, 102, 103, 201, 202 and 203. The reflectors are arranged in a staggered mode, so that the reflected light beams of different arrays of light sources in the combined light beam are alternately arranged, namely the reflected light beams in the combined light beam are arranged in the sequence of 101, 201, 102, 202, 103 and 203. The reflected light beams of different array light sources are alternately arranged, so that the uniform distribution of energy and color in the combined light beam is realized, and more uniform light spots are obtained.
Illustratively, the distance between the reflected light beams of the adjacent element light source groups of each of the array light sources is larger than the distance between the adjacent element light source groups of the array light sources. In one embodiment, as shown in fig. 3A and 3B, the distances between the light beams 11, 12 and 13 (i.e. the distances between adjacent element light source groups) of the first array light source 1 are d1, the distances between the reflected light beams 101, 102 and 103 of the first array light source 1 are d2, and d2 > d1, so that the reflection unit has a beam expanding effect on the first array light source 1. Likewise, the reflection unit also has a beam expanding effect on the second array light source 2.
Illustratively, the distance between adjacent reflected light beams in the combined light beam is smaller than or equal to the distance between adjacent element light source groups of each array light source. In one embodiment, as shown in FIGS. 3A and 3B, the distances between adjacent reflected beams 101, 201, 102, 202, 103 and 301 in the combined beam are all d3, and d3 ≦ d 1.
By realizing that d3 is less than or equal to d1, the width of the combined light beam is less than or equal to the sum of the width of the light beam of the first array light source 1 and the width of the light beam of the second array light source 2, therefore, the width of the combined light beam is reduced, and the light spot with smaller diameter is obtained.
The utility model discloses still include a light source device, it includes as above close light device:
the array light source comprises a plurality of element light sources, the element light sources form two or more element light source groups, and the array light source at least comprises a first array light source and a second array light source;
a plurality of reflection units, each reflection unit is configured to reflect the light beam of one of the light source groups to form a reflection light beam, and the reflection light beams are combined to form a combined light beam;
the plurality of reflecting units are arranged in a staggered mode and are not in the same plane, so that the reflected light beams of one of the light source groups of the first array light source and the reflected light beams of one of the light source groups of the second array light source in the combined light beam are alternately arranged.
The utility model discloses still include a projection arrangement, it includes as above light source device.
According to the utility model provides a close light device through making a plurality of reflection unit staggered arrangement to make the reflected beam alternate arrangement who closes two or more array light sources in the light beam, thereby obtain energy and colour evenly distributed's the light beam that closes, reduced the width that closes the light beam simultaneously, obtain the diameter littleer and more even facula.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A light combining device, comprising:
the array light source comprises a plurality of element light sources, the element light sources form two or more element light source groups, and the array light source at least comprises a first array light source and a second array light source;
a plurality of reflection units, each reflection unit is configured to reflect the light beam of one of the light source groups to form a reflection light beam, and the reflection light beams are combined to form a combined light beam;
the plurality of reflecting units are arranged in a staggered mode and are not in the same plane, so that the reflected light beams of one of the light source groups of the first array light source and the reflected light beams of one of the light source groups of the second array light source in the combined light beam are alternately arranged.
2. The light combining device of claim 1, wherein the plurality of elementary light sources of each of the array light sources are arranged in two or more rows, or the plurality of elementary light sources are arranged in two or more columns.
3. The light combining device of claim 2, wherein the set of elementary light sources comprises one row of elementary light sources, one column of elementary light sources, a plurality of rows of elementary light sources, or a plurality of columns of elementary light sources.
4. The light combining device of claim 3, wherein each of the plurality of elementary light sources in the array of light sources are arranged in a uniform manner.
5. The light combining device as claimed in claim 1, wherein the distance between the reflected light beams of the adjacent light source sets of each of the array light sources is greater than the distance between the adjacent light source sets of the array light sources.
6. The light combining apparatus of claim 1, wherein the distance between adjacent reflected light beams in the combined light beam is less than or equal to the distance between adjacent sets of elementary light sources of each of the array light sources.
7. The light combining device of claim 1, wherein the first array of light sources is different from the second array of light sources.
8. The light combining device as claimed in claim 1, wherein the reflecting units corresponding to the array light sources are planar, parallel and equidistant.
9. A light source device comprising the light combining device according to any one of claims 1 to 8.
10. A projection apparatus comprising the light source apparatus according to claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921362514.6U CN210534521U (en) | 2019-08-21 | 2019-08-21 | Light combining device, light source device and projection device |
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| CN201921362514.6U CN210534521U (en) | 2019-08-21 | 2019-08-21 | Light combining device, light source device and projection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022174840A1 (en) * | 2021-02-22 | 2022-08-25 | 青岛海信激光显示股份有限公司 | Light source and laser projection apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022174840A1 (en) * | 2021-02-22 | 2022-08-25 | 青岛海信激光显示股份有限公司 | Light source and laser projection apparatus |
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