CN108646510A - A kind of compact projection light source - Google Patents
A kind of compact projection light source Download PDFInfo
- Publication number
- CN108646510A CN108646510A CN201810660406.0A CN201810660406A CN108646510A CN 108646510 A CN108646510 A CN 108646510A CN 201810660406 A CN201810660406 A CN 201810660406A CN 108646510 A CN108646510 A CN 108646510A
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- reflection
- prism
- fluorescent wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G03B21/2066—Reflectors in illumination beam
-
- 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
- G03B21/208—Homogenising, shaping of the illumination light
Abstract
The present invention discloses a kind of compact projection light source, including light source, fluorescent wheel and the prism assemblies being arranged between light source and fluorescent wheel, the prism assemblies have the first prism facets, the light that light source is sent out is incident on the first prism facets with the angle more than critical angle and obtains reflection light one by its total reflection, reflection light one is irradiated to the direction for favouring fluorescent wheel rotary shaft on fluorescent wheel, the fluorescent wheel is reflective fluorescent wheel, circumferentially have on fluorescent wheel to reflection light one reflected to obtain reflection light two echo area and several be used to excite generation different colours radiofluorescence fluorescent powder area, the reflection light two and radiofluorescence is transmitted after being incident on the first prism facets with the angle less than critical angle and is exported by closing light component closing light.Compact projection light source of the present invention is simple in structure, compact, and light path is turned back less, low manufacture cost few using component, and occupancy is small, and stability in use is good.
Description
Technical field
The present invention relates to projection light source technical field more particularly to a kind of compact projection light sources.
Background technology
Nowadays, more and more household appliances manufacturers start to draw close to laser television product battle line, with a series of depth of brands
Enter, laser projection is also allowed gradually to obtain the attention of the consumer group, the light emitting source of optical projection system is broadly divided into three classes, is lamp respectively
Steep light source, LED light source and laser light source.Laser light source is projection light source in recent years of greatest concern, and laser light source has wavelength
The features such as alternative is big and spectral luminance factor is high, can synthesize the color domain coverage ratio of 90% or more nature color seen in human eye,
Realize perfect color rendition.Meanwhile laser light source just has the brightness of superelevation and longer service life, greatly reduces the later stage
Maintenance cost.
Currently used projection light source system light path is complex, and the parts of use are more, and occupancy volume is big, is not suitable for
In the development of miniaturization.
Invention content
The technical problems to be solved by the invention and the technical assignment of proposition are improved to the prior art, and one kind is provided
Compact projection light source solves projection light source system light path complexity traditional in current technology, and occupancy volume is big, is unfavorable for small-sized
The problem of change.
In order to solve the above technical problems, the technical scheme is that：
A kind of compact projection light source, including light source, fluorescent wheel and the prism assemblies being arranged between light source and fluorescent wheel,
The prism assemblies have the first prism facets, the light that light source is sent out with the angle more than critical angle be incident on the first prism facets by
Its total reflection obtains reflection light one, and reflection light one is irradiated to the direction for favouring fluorescent wheel rotary shaft on fluorescent wheel, institute
The fluorescent wheel stated is reflective fluorescent wheel, circumferentially has on fluorescent wheel and is reflected to obtain reflection light to reflection light one
Two echo area is used to excite the fluorescent powder area for the radiofluorescence for generating different colours, two He of reflection light with several
Radiofluorescence is transmitted after being incident on the first prism facets with the angle less than critical angle and is exported by closing light component closing light.The present invention
The compact projection light source using prism assemblies come set up the light sent out for light source and radiofluorescence by light path, lead to
Different incidence angles is crossed to change the transmission path of light, in one oblique illumination to fluorescent wheel of reflection light, to which reflection obtains
Reflection light two and reflection light one between have certain angle, no longer when reflection light two is incident on the first prism facets
More than critical angle, so as to which from the first prism facets transmissive, same radiofluorescence is incident with the angle less than critical angle
To the first prism facets and transmissive, it is mixed into white light after reflection light two and radiofluorescence closing light, it is of the present invention compact
The used light path of type projection light source is simple, it is few to turn back, and effectively reduces parts, occupancy is small, meets the needs of miniaturization.
Further, the prism assemblies are triangular prism comprising first surface, second surface and the first prism
Face, the light that the light source is sent out enter to inject triangular prism and after the first prism facets are totally reflected from second from first surface
Surface is emitted to fluorescent wheel, reflection light two and radiofluorescence from second surface enter to inject triangular prism and from the first prism facets it is saturating
It penetrates over, it is simple in structure, it is easy to use.
Further, it is coated with the anti-reflection film for wavelength in the light of 400~700nm on the second surface, reduces energy
Amount loss, improves the luminous flux of finally obtained light source, improves whole light efficiency, meets the needs of highlighted projection.
Further, the prism assemblies are TIR prism group, reduce optical energy loss.
Further, the reflection light two transmits after impinging perpendicularly on the first prism facets, reduces loss, improves final
The luminous flux of obtained light source.
Further, the light source is the monochromatic source or light source that radiofluorescence is generated for excitated fluorescent powder area
The more colors being composed of the supplement light source of the monochromatic source and other colors that generate radiofluorescence for excitated fluorescent powder area
Light source, the light that the supplement light source of other colors is sent out mix injection with radiofluorescence after reflection, are effectively improved color, increase
Colour gamut, improves the vividness of image reproducing color, and supplements light source time-sharing work, reduces power consumption.
Further, reflectance coating using diffusion sheet and is plated in the echo area, can eliminate speckle.
Further, the closing light component includes speculum one and dichroscope, the dichroscope reflection source
Color and the light for transmiting other colors, radiofluorescence are reflected towards dichroscope by speculum one and penetrate dichroscope, reflected light
Line two is reflexed to radiofluorescence by dichroscope in the same direction to carry out closing light, simple in structure, compact, effectively by the anti-of light source
It penetrates light two and is mixed into white light output with radiofluorescence.
Further, the closing light component is focusing lens group, and reflection light two and radiofluorescence are by focusing lens group
Focus closing light, focusing lens group is sufficiently large to carry out closing light by reflection light two and radiofluorescence, then light beam of light combination directly into
Enter focusing block, light path no longer needs to turn back.
Further, the closing light component includes reflecting optics two and reflecting optics three, two He of reflection light
Radiofluorescence is reflected towards concentrating element by reflecting optics two and reflecting optics three respectively and carries out closing light focusing shaping.
Compared with prior art, the invention has the advantages that：
Compact projection light source of the present invention is simple in structure, compact, and light path is turned back less, few using component, is fabricated to
This is low, and occupancy is small, and stability in use is good, meets the needs of miniaturization.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment one of compact projection light source；
Fig. 2 is the structural schematic diagram of the embodiment two of compact projection light source；
Fig. 3 is the structural schematic diagram of the embodiment three of compact projection light source；
Fig. 4 is the structural schematic diagram of the example IV of compact projection light source.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
A kind of compact projection light source disclosed by the embodiments of the present invention, simple in structure, compact, light path is simple, uses component
Few, occupancy is small, meets the needs of miniaturization.
A kind of compact projection light source, mainly constitutes light path using prism, is all-trans by different incidence angles to realize
It penetrates and transmits, include mainly light source 1, fluorescent wheel 3 and the prism assemblies 2 being arranged between light source 1 and fluorescent wheel 3, the rib
Mirror assembly 2 has the first prism facets a, and the light that light source 1 is sent out is injected in prism assemblies 2 and is incident on the angle more than critical angle
First prism facets a obtains reflection light one by its total reflection, and reflection light one is irradiated to fluorescent wheel 3 after the injection of prism assemblies 2
On, the fluorescent wheel 3 is reflective fluorescent wheel, circumferentially has on fluorescent wheel 3 and is reflected to obtain to reflection light one
The echo area of reflection light two is used to excite the fluorescent powder area for the radiofluorescence for generating different colours with several；
When reflection light one is irradiated on echo area, the reflection light if in one normal incidence to echo area of reflection light
Two can face according to the path reverse transfer of reflection light one to be also greater than when reflection light two reaches the first prism facets a
Boundary angle, reflection light two can occur to be totally reflected and can not transmit, therefore reflection light one is needed to favour the rotation of fluorescent wheel 3
The direction of axis is irradiated on fluorescent wheel 3 so that and have certain angle poor between reflection light two and reflection light one, so that
Reflection light two enters angle when prism assemblies 2 reach the first prism facets a and is less than critical angle, to which reflection light two can be from first
Prism facets a transmissives, in order to reduce loss, the first prism facets of the directive a vertical as possible of reflection light two reduces loss, improves
The luminous flux of light extraction, similarly, radiofluorescence enter prism assemblies 2 and are incident on the first prism facets with the angle less than critical angle
Transmissive after a, then closing light exports reflection light two again with radiofluorescence.
Light source 1 selects blue-light source, the fluorescent powder area on fluorescent wheel 3 to be generally yellow fluorescent powder area, green emitting phosphor area,
The excitation of yellow fluorescent powder area generates yellow radiation fluorescence, and yellow radiation fluorescence can obtain red light by filtering；On fluorescent wheel 3
Fluorescent powder area can also be red fluorescence powder area, green emitting phosphor area, can also increase yellow fluorescent powder area, yellow fluorescence simultaneously
The luminous flux that powder area generates is high；Echo area is using diffusion sheet and plates reflectance coating, can eliminate speckle.
Embodiment one
As described in Figure 1, light source 1 is blue laser light source, and the fluorescent powder area on fluorescent wheel 3 includes green emitting phosphor area, red
Color fluorescent powder area and echo area；
Beam shaping component 4 is provided between light source 1 and prism assemblies 2, the light that light source 1 is sent out is by beam shaping component 4
Focusing lens and diffusion sheet can be used in compression shaping, beam shaping component 4, and hot spot is carried out shaping and compression by focusing lens, is expanded
Discrete piece makes hot spot be evenly distributed for eliminating speckle, promotes the launching efficiency to fluorescent powder on fluorescent wheel；
Focusing block 5 is provided between prism assemblies 2 and fluorescent wheel 3, to the reflection light one that comes from prism assemblies 2 into
Row transmission focusing, to exciting the radiofluorescence of generation to carry out shaping and transmission on fluorescent wheel 3, to being reflected back from fluorescent wheel 3
Reflection light two transmitted, the fluorescent powder area on fluorescent wheel 3 by excitation generate radiofluorescence when be lambert's body light source,
The optical power detection on the direction of 180 degree, therefore radiofluorescence is focused shaping using focusing block 5 and is transmitted；
Prism assemblies 2 use single triangular prism comprising first surface b, second surface c and the first prism facets a, institute
The light that the light source 1 stated is sent out enters to inject triangular prism and after the first prism facets a is totally reflected from the second table from first surface b
Face c is emitted to fluorescent wheel 3, and reflection light two with radiofluorescence enters to inject triangular prism from second surface c and to be less than critical angle
Angle be incident on transmissive after the first prism facets a, and the light for wavelength in 400~700nm is coated on second surface c
Anti-reflection film, can effectively penetrate reflection light two and radiofluorescence, reduce reflection, improve the luminous flux of light extraction；
The reflection light two transmitted from the first prism facets a is exported with radiofluorescence by 6 closing light of closing light component, is being passed through
There are certain drift angle, in the present embodiment, closing light between focusing block 5 and 2 back reflection light two of prism assemblies and radiofluorescence
Component 6 includes speculum 1 and dichroscope 62,62 reflection source of dichroscope, 1 color and the light for transmiting other colors, spoke
It penetrates fluorescence to be reflected towards dichroscope 62 by speculum 1 and penetrate dichroscope 62, reflection light two is reflected by dichroscope 62
Extremely with radiofluorescence in the same direction to carry out closing light；
Concentrating element 7, filter wheel 8 and optical wand 9 are also set gradually after closing light component 6, light beam of light combination is by focusing member
Part 7 is focused shaping；When including at least red fluorescence powder area, green emitting phosphor area on fluorescent wheel 3, and system wants color
When asking not high, it may be unnecessary to which filter wheel can be filtered color with filter wheel so that color when system is higher to color
Bright-coloured, filter wheel is divided into filtration zone and regional transmission, and filtration zone is Red lightscreening plate, green color filter, and regional transmission
For white glass or diffusion sheet, preferably diffusion sheet, regional transmission can allow yellow light and blue laser to transmit, allow yellow light by that can have
Effect increases the luminous flux of light extraction；Optical wand 9 carries out light beam uniform, raising drop shadow effect.
The course of work：Light source 1 sends out blue laser, laser beam compression shaping is carried out by beam shaping component 4, into prism group
Part, blue laser enter focusing block 5 after being reflected, are accumulated as the hot spot of a diameter about 1.5~2.5mm, are then irradiated to
On fluorescent wheel.Fluorescent wheel high speed rotation generates the light of a variety of colors, specific as follows：
Blue laser irradiation enters focusing block 5 to red radiation fluorescence, red radiation fluorescence is generated when red fluorescence powder area
After enter back into prism assemblies 2 and transmit；
Blue laser irradiation enters focusing block 5 to red radiation fluorescence, Green-Emission fluorescence is generated when green emitting phosphor area
Enter prism assemblies 2 afterwards and transmits；
Blue laser is reflected back when blue laser irradiation is to echo area, since blue laser favours the direction of 3 rotary shaft of fluorescent wheel
It is irradiated on fluorescent wheel 3, the blue laser being reflected back forms an angle with incident blue laser, after blue laser enters focusing block 5
Prism assemblies are entered back into, the angle of the blue laser and the first prism facets a that are reflected back at this time is less than critical angle, will not be all-trans
It penetrates, prism assemblies is transmitted from the first prism facets a, in order to reduce loss, the blue laser being reflected back the first rib of directive vertical as possible
Minute surface a；
Red radiation fluorescence, Green-Emission fluorescence and the blue laser that is reflected back are mixed into white light by closing light component 6
Outgoing.
Embodiment two
It is with the difference of embodiment one：Prism assemblies 2 use TIR prism group, as shown in Fig. 2, in the present embodiment,
TIR prism group is combined by two prisms and is constituted, including prism 1 and prism 2 22, prism 1 have the faces AB, the faces AC and
The faces BC, the faces BC are the first prism facets, and the blue laser that light source 1 is sent out enters to inject prism 1 from the faces AC and is totally reflected in the faces BC
It is emitted to fluorescent wheel 3 from the faces AB afterwards, the blue laser being reflected back from fluorescent wheel enters to inject prism 1 simultaneously with radiofluorescence from the faces AB
Be incident on transmissive behind the faces BC with the angle less than critical angle, the blue laser being then reflected back from fluorescent wheel with radiofluorescence again
It is exported after entering 6 closing light of closing light component transmitted through prism 2 22.
Embodiment three
As shown in figure 3, the difference from embodiment one is：Closing light component 6 uses focusing lens group, is reflected from fluorescent wheel
The blue laser returned is no longer needed to turn back, be made with radiofluorescence light by entering concentrating element 7, light path after focusing lens group focused transmission
It is compacter to obtain light path, reduces and occupies volume.
Example IV
As shown in figure 4, the difference from embodiment one is：Closing light component 6 includes reflecting optics 2 63 and reflecting optics
3 64, reflecting optics 2 63 and reflecting optics 3 64 select suitable angle so that the blue laser and spoke being reflected back from fluorescent wheel
It penetrates fluorescence and is reflected towards the progress closing light focusing shaping of concentrating element 7 by reflecting optics 2 63 and reflecting optics 3 64 respectively.
Embodiment five
It is with the difference of embodiment one：Light source 1 is made of the different combination of light sources of several colors, one of face
The light source of color generates radiofluorescence for irradiating the excitation of fluorescent powder area, for example, by using blue laser light source, the light source of other colors
As supplement light source, red laser light source, green laser light source etc. can be selected, setting is to red laser light source, green on fluorescent wheel
The echo area of the echo area for the light that color laser light source is sent out, the light sent out to red laser light source, green laser light source can be
Echo area with the light sent out to blue laser light source is same position or different location, red laser light source, green laser light
The light that source is sent out mixes output after reflection with radiofluorescence, can improve the vividness of image reproducing color, and supplement light
Source time-sharing work, only when fluorescent wheel rotates illuminated to echo area corresponding with the supplement light source just open work, remaining when
Between be closed, reduce power consumption.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (10)
1. a kind of compact projection light source, which is characterized in that including light source (1), fluorescent wheel (3) and setting light source (1) with it is glimmering
Prism assemblies (2) between halo (3), the prism assemblies (2) have the first prism facets (a), the light that light source (1) is sent out with
Angle more than critical angle is incident on the first prism facets (a) and obtains reflection light one by its total reflection, and reflection light one is to tilt
It is irradiated on fluorescent wheel (3) in the direction of fluorescent wheel (3) rotary shaft, the fluorescent wheel (3) is reflective fluorescent wheel, fluorescent wheel
(3) circumferentially have on to reflection light one reflected to obtain reflection light two echo area and several produced for exciting
The fluorescent powder area of the radiofluorescence of raw different colours, the reflection light two and radiofluorescence are entered with the angle less than critical angle
The first prism facets (a) are mapped to transmit and export by closing light component (6) closing light afterwards.
2. compact projection light source according to claim 1, which is characterized in that the prism assemblies (2) are triangular prism
Mirror comprising first surface (b), second surface (c) and the first prism facets (a), the light that the light source (1) is sent out is from the first table
Face (b) enters to inject triangular prism and is emitted to fluorescent wheel (3) from second surface (c) after the first prism facets (a) are totally reflected.
3. compact projection light source according to claim 2, which is characterized in that be coated with needle on the second surface (c)
To wavelength the light of 400~700nm anti-reflection film.
4. compact projection light source according to claim 1, which is characterized in that the prism assemblies (2) are TIR prism
Group.
5. compact projection light source according to claim 1, which is characterized in that the reflection light two impinges perpendicularly on
It is transmitted after first prism facets (a).
6. compact projection light source according to claim 1, which is characterized in that the light source (1) is glimmering for exciting
The monochromatic source or light source (1) of the areas Guang Fen generation radiofluorescence are by the monochrome for excitated fluorescent powder area generation radiofluorescence
The multi-colour light source that light source and the supplement light source of other colors are composed, and supplement light source time-sharing work.
7. compact projection light source according to claim 1, which is characterized in that the echo area is using diffusion sheet and plates
Reflectance coating.
8. compact projection light source according to claim 1, which is characterized in that the closing light component (6) includes reflection
Mirror one (61) and dichroscope (62), the dichroscope (62) reflection source (1) color and the light for transmiting other colors, spoke
It penetrates fluorescence to be reflected towards dichroscope (62) by speculum one (61) and penetrate dichroscope (62), reflection light two is by dichroscope
(62) it reflexes to radiofluorescence in the same direction to carry out closing light.
9. compact projection light source according to claim 1, which is characterized in that the closing light component (6) is focus lamp
Piece group, reflection light two and radiofluorescence focus closing light by focusing lens group.
10. compact projection light source according to claim 1, which is characterized in that the closing light component (6) includes reflection
Eyeglass two (63) and reflecting optics three (64), the reflection light two and radiofluorescence are respectively by reflecting optics two (63) and anti-
It penetrates eyeglass three (64) and is reflected towards concentrating element progress closing light focusing shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660406.0A CN108646510A (en) | 2018-06-25 | 2018-06-25 | A kind of compact projection light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660406.0A CN108646510A (en) | 2018-06-25 | 2018-06-25 | A kind of compact projection light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108646510A true CN108646510A (en) | 2018-10-12 |
Family
ID=63753424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810660406.0A Pending CN108646510A (en) | 2018-06-25 | 2018-06-25 | A kind of compact projection light source |
Country Status (1)
| Country | Link |
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| CN (1) | CN108646510A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109960099A (en) * | 2019-04-30 | 2019-07-02 | 成都市极米科技有限公司 | A kind of projection light source system of non co axial |
| CN110543076A (en) * | 2019-10-21 | 2019-12-06 | 重庆融豪太视科技有限公司 | Laser light source structure of high-brightness projector |
| CN111624840A (en) * | 2020-06-24 | 2020-09-04 | 成都极米科技股份有限公司 | Light source device and projection display equipment |
| JP2021005060A (en) * | 2019-06-27 | 2021-01-14 | キヤノン株式会社 | Light source device and image projection device including the same |
| CN115032856A (en) * | 2021-03-05 | 2022-09-09 | 青岛海信激光显示股份有限公司 | Light source assembly and projection equipment |
| WO2023045882A1 (en) * | 2021-09-27 | 2023-03-30 | 青岛海信激光显示股份有限公司 | Laser projection device |
-
2018
- 2018-06-25 CN CN201810660406.0A patent/CN108646510A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7162756B2 (en) | 2019-04-30 | 2022-10-28 | チョントゥー ジミー テクノロジー カンパニー リミテッド | Non-coaxial projection light source system |
| WO2020220837A1 (en) * | 2019-04-30 | 2020-11-05 | 成都极米科技股份有限公司 | Non-coaxial projection light source system |
| JP2022528667A (en) * | 2019-04-30 | 2022-06-15 | チョントゥー ジミー テクノロジー カンパニー リミテッド | Non-coaxial projection light source system |
| CN109960099A (en) * | 2019-04-30 | 2019-07-02 | 成都市极米科技有限公司 | A kind of projection light source system of non co axial |
| US11822222B2 (en) | 2019-04-30 | 2023-11-21 | Chengdu Xgimi Technology Co., Ltd. | Non-coaxial projection light source system |
| CN109960099B (en) * | 2019-04-30 | 2024-03-15 | 成都极米科技股份有限公司 | Non-coaxial projection light source system |
| JP2021005060A (en) * | 2019-06-27 | 2021-01-14 | キヤノン株式会社 | Light source device and image projection device including the same |
| CN110543076A (en) * | 2019-10-21 | 2019-12-06 | 重庆融豪太视科技有限公司 | Laser light source structure of high-brightness projector |
| CN111624840A (en) * | 2020-06-24 | 2020-09-04 | 成都极米科技股份有限公司 | Light source device and projection display equipment |
| CN111624840B (en) * | 2020-06-24 | 2021-11-09 | 成都极米科技股份有限公司 | Light source device and projection display equipment |
| WO2021259037A1 (en) * | 2020-06-24 | 2021-12-30 | 成都极米科技股份有限公司 | Light source apparatus and projection display device |
| CN115032856A (en) * | 2021-03-05 | 2022-09-09 | 青岛海信激光显示股份有限公司 | Light source assembly and projection equipment |
| WO2023045882A1 (en) * | 2021-09-27 | 2023-03-30 | 青岛海信激光显示股份有限公司 | Laser projection device |
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