CN111308842A - Light source system and display device - Google Patents
Light source system and display device Download PDFInfo
- Publication number
- CN111308842A CN111308842A CN201811521191.0A CN201811521191A CN111308842A CN 111308842 A CN111308842 A CN 111308842A CN 201811521191 A CN201811521191 A CN 201811521191A CN 111308842 A CN111308842 A CN 111308842A
- Authority
- CN
- China
- Prior art keywords
- light
- region
- source system
- light source
- sub
- 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.)
- Pending
Links
Images
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
-
- 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 invention provides a light source system and a display device, the light source system includes: an excitation light source for emitting excitation light; the light splitting device is used for sequentially splitting the exciting light into first light transmitted along a first light path and second light transmitted along a second light path, filtering the received laser light obtained after the conversion of the wavelength conversion device, and emitting the filtered received laser light and the second light along the same light path; the wavelength conversion device is arranged on the first light path and is used for performing wavelength conversion on at least part of the first light to obtain stimulated light; and the received laser and the second light transmitted along the second light path are emitted along the same light path after being filtered by the light splitting device. In the light source system provided by the invention, the use of the regional membrane is avoided, so that the angle distribution of the transmitted light beams in the light source system is continuous, yellow spots cannot appear in far-field light spots, and the uniformity of the emergent light rays of the light source system and the display equipment is improved.
Description
Technical Field
The invention relates to the technical field of light sources, in particular to a light source system and display equipment.
Background
This section is intended to provide a background or context to the specific embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
At present, in order to separate the blue laser light and the blue primary light in the light source, the blue laser light and the blue primary light are generally separated by using an area film by utilizing the optical expansion, but the design has a technical difficulty that the area size is designed. If the area is designed to be too large, yellow spots appear in far-field light spots, the uniformity of a projection picture is influenced, and in addition, the efficiency of reflected primary color blue light is low due to the fact that the area is too large, and the optical efficiency of the whole light source is influenced; if the area design is too small, the design of the previous optical system is complicated, and the light energy density at the area position is too high, so that the area diaphragm is easily burnt out, and the reliability of the whole light source is influenced.
Disclosure of Invention
In view of the above, the present invention provides a light source system that avoids using an area film, which can effectively improve uniformity of a display screen and light efficiency of the light source system, and a display device including the light source system.
A light source system, comprising:
an excitation light source for emitting excitation light;
the light splitting device is used for sequentially splitting the exciting light into first light transmitted along a first light path and second light transmitted along a second light path, filtering the received laser light obtained after the conversion of the wavelength conversion device, and emitting the filtered received laser light and the second light along the same light path; and
and the wavelength conversion device is arranged on the first light path and is used for performing wavelength conversion on at least part of the first light to obtain the stimulated light and emitting the stimulated light to the light splitting device.
A display device comprising a light source system as described above.
In the light source system provided by the invention, the use of the regional membrane is avoided, so that the angle distribution of the transmitted light beams in the light source system is continuous, yellow spots cannot appear in far-field light spots, the uniformity of emergent light rays of the light source system and the display equipment is favorably improved, and the light efficiency and the reliability of the light source system are favorably improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments/modes of the present invention, the drawings needed to be used in the description of the embodiments/modes are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments/modes of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a light source system provided by the present invention.
Fig. 2 is a schematic top view of the light splitting device shown in fig. 1.
Fig. 3 is a schematic top view of the wavelength conversion device shown in fig. 1 according to an embodiment.
Fig. 4 is a schematic top view of the wavelength conversion device shown in fig. 1 according to another embodiment.
Fig. 5 is a light transmittance curve of the light combining device shown in fig. 1.
Description of the main elements
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Fig. 1 is a schematic structural diagram of a light source system 10 according to the present invention. The light source system 10 provided by the invention can be applied to display equipment such as engineering machine light sources, education projectors, laser televisions, micro projectors and the like.
The light source system 10 includes an excitation light source 100, a light splitting device 200, and a wavelength conversion device 400. The excitation light source 100 is configured to emit excitation light; the light splitting device 200 is configured to sequentially split the excitation light into a first light transmitted along a first optical path and a second light transmitted along a second optical path, where the first light is transmitted along the first optical path and is incident on the wavelength conversion device 400 to generate an excited light with a color different from that of the excitation light, and the second light is emitted from the light source system 10 as a primary light of the light source system 10 after being transmitted along the second optical path. The wavelength conversion device 400 is configured to perform wavelength conversion on at least a portion of the first light propagating along the first optical path to obtain received laser light, and emit the received laser light to the optical splitting device 200, the optical splitting device 200 is configured to receive the received laser light emitted by the wavelength conversion device 400 and filter the received laser light, and the filtered received laser light emitted by the optical splitting device 200 and the second light propagating along the second optical path are guided by other optical elements and then emitted along the same optical path.
In the light source system 10 provided by the present invention, the light splitting device 200 is used to guide a part of the excitation light to the first light path for wavelength conversion to obtain the stimulated light, and guide another part of the excitation light to the second light path to obtain the second light, and the filtered stimulated light emitted by the light splitting device 200 and the second light on the second light path are guided by other optical elements and then emitted along the same light path to obtain the light source light emitted by the light source system 10. The light source system 10 avoids using an area diaphragm, thereby being beneficial to the light beams transmitted in the light source system 10 to be distributed in a continuous angle, avoiding the yellow spots from appearing in far-field light spots, being beneficial to improving the uniformity of the emergent light rays of the light source system 10 and the display device, and being beneficial to improving the light efficiency and the reliability of the light source system 10. In addition, the light splitting device 200 in the light source system 10 is also used to filter the received laser light, which is beneficial to improving the light purity of the light source system 10, thereby expanding the color gamut of the light source system 10.
Specifically, the excitation light source 100 is a blue light source for emitting blue light as excitation light. It is understood that the excitation light source 100 may also be other short wavelength light sources, such as an ultraviolet light source. In the present invention, the excitation light source 100 is a laser or a laser array, and the number of the lasers can be selected according to actual needs. In one embodiment, the excitation light source 100 may also be a light emitting diode or a bulb light source, etc.
Fig. 2 is a schematic top view of the light splitting device 200 shown in fig. 1. The surface of the light splitting device 200 includes a first region 210 and a second region 220, the first region 210 is used for reflecting the excitation light and filtering the stimulated light generated by the wavelength conversion device 400, and the second region 220 is used for transmitting the excitation light. Further, the first light is obtained by the light splitting device 200 reflecting the excitation light, and the second light is obtained by the light splitting device 200 transmitting the excitation light. It is understood that, in the modified embodiment, the first light is obtained by the spectroscopic device 200 transmitting the excitation light, and the second light is obtained by the spectroscopic device 200 reflecting the excitation light.
Further, the first region 210 includes a first sub-region 211 and a second sub-region 212 both for reflecting the first light, wherein the first sub-region 211 and the second sub-region 212 are further for filtering different color lights respectively. In the present embodiment, the first sub-region 211, the second sub-region 212, and the second region 220 are disposed adjacent to each other; in another embodiment, a space is provided between the first sub-region 211, the second sub-region 212, and the second region 220.
The excitation light is blue light, and the second region 220 may be a hollow region, an anti-reflection film, or a filter capable of transmitting blue light. To reduce or eliminate coherence of the laser light in the excitation light, the second region 220 may be a transmissive scattering film. In one embodiment, the excitation light is ultraviolet light, and the second region 220 is provided with a wavelength conversion material to convert the excitation light into light of one color primary and transmit it to the second light path, such as a blue phosphor to generate blue fluorescence as the second light under excitation of the ultraviolet excitation light.
In the present invention, the light source system 10 periodically emits rgb tricolor light, and accordingly, the first sub-region 211 and the second sub-region 212 are respectively used for transmitting red light and green light based on the reflected blue light, and in one embodiment, the first sub-region 211 and the second sub-region 212 are both used for reflecting blue light and transmitting yellow light. It can be understood that the first sub-region 211 and the second sub-region 212 are respectively used for performing color correction on different colors of incident stimulated light, for example, the first sub-region 211 is used for performing filter color correction on red fluorescence in the stimulated light, and the second sub-region 212 is used for performing filter color correction on green fluorescence in the stimulated light, which is beneficial to improving the purity of the primary light emitted by the light splitting device 200. In one embodiment, the light splitting device 200 includes a plurality of sub-regions for filtering more than two colors of light to produce four, five, or more primary colors of light of the light source system 10.
The light source system 10 further includes a driving device 201, the light splitting device 200 is driven by the driving device 201 to periodically rotate, the first region 210 and the second region 220 are used for alternately receiving the excitation light, further, the first sub-region 211, the second sub-region 212 and the second region 220 are used for alternately receiving the excitation light, and the light splitting device 200 emits the second light, the red fluorescence after color correction and the green fluorescence after color correction in a time sequence.
In one embodiment, the light splitting device 200 is in a strip shape, the first sub-region 211, the second sub-region 212 and the second region 220 are linearly disposed on the surface of the light splitting device 200, and the light splitting device 200 is driven by the driving device 201 to make a periodic reciprocating motion, so that the first sub-region 211, the second sub-region 212 and the second region 220 periodically receive the excitation light.
Referring to fig. 3, a schematic top view of the wavelength conversion device 400 shown in fig. 1 according to a first embodiment is shown. The wavelength conversion device 400 includes a conversion region 410, the conversion region 410 is configured to receive the first light and convert the first light into an excited light of another color, and the conversion region 410 is disposed with a wavelength conversion material, such as a yellow phosphor, for receiving the excitation light and emitting a yellow excited light. In the present embodiment, the wavelength conversion device 400 is a rotating color wheel, and is driven by the driving device 401 (see fig. 1) to periodically rotate, so as to alleviate the local high temperature condition of the wavelength conversion device 400, which is beneficial to improving the conversion efficiency of the wavelength conversion device 400. In one embodiment, the wavelength conversion device 400 is a stationary phosphor sheet.
Referring to fig. 4, a schematic top view of the wavelength conversion device 400 shown in fig. 1 according to another embodiment is shown. The wavelength conversion device 400 includes a conversion region 410, and the conversion region 410 includes a first section R and a second section G, wherein the first section R is used for converting the first light into the stimulated light of the first color, the second section G is used for converting the first light into the stimulated light of the second color, and the first section R and the second section G are periodically located on the optical path of the first light. Specifically, the first section R and the second section G are respectively provided with different wavelength conversion materials, for example, the first section R is provided with a red phosphor to generate red fluorescence as stimulated light under excitation of the blue first light, and the second section G is provided with a green phosphor to generate green fluorescence as stimulated light under excitation of the blue first light. The wavelength conversion device 400 further includes a non-conversion region B, and the first section R, the second section G and the non-conversion region B are periodically located on the optical path of the first light, i.e. the first optical path. In the present embodiment, the wavelength conversion device 400 is also used to guide the generated received laser light to the spectroscopic device 200, for example, to reflect the received laser light to the spectroscopic device 200, and in the modified embodiment, the wavelength conversion device 400 is also used to transmit the generated received laser light to the spectroscopic device 200.
The wavelength conversion device 400 in this embodiment needs to move in synchronization with the spectroscopic device 200. So as to ensure that the first light emitted from the first sub-region 211 in the light splitting device 200 is incident to the first section R, and the excited light emitted from the first section R is filtered by the first sub-region 211 and then emitted along the same light path with the second light; the first light emitted from the second sub-region 212 enters the second segment G, and the excited light emitted from the second segment G is filtered by the second sub-region 212 and then emitted along the same optical path as the second light. In other words, when the first sub-region 211 and the second sub-region 212 are respectively located on the optical path of the excitation light, the first section R and the second section G are respectively located on the first optical path, so that the first section R and the second section G can be irradiated by the first light. When the second region 220 of the light splitting device 200 is located on the light path of the excitation light, the non-conversion region B rotates to the first light path, the non-conversion region B is not used for emitting light, and a colorless phosphor may be disposed to improve the uniformity of the weight distribution of the wavelength conversion device 400, thereby ensuring that the wavelength conversion device 400 can maintain balance when periodically rotating.
In the embodiment in which the wavelength conversion device 400 and the light splitting device 200 both rotate periodically, the wavelength conversion device 400 and the light splitting device 200 are both disc-shaped, wherein the central angles occupied by the first sub-region 211, the second sub-region 212 and the second region 220 on the surface of the light splitting device 200 are the same as the central angles occupied by the first section R, the second section G and the non-conversion region B on the surface of the wavelength conversion device 400.
Referring to fig. 1 again, the light source system 10 further includes a light combining device 800 and a light uniformizing device 900, wherein the light combining device 800 is configured to filter the received laser light and the second light emitted from the light splitting device 200 and guide the received laser light and the second light emitted from the light splitting device 200 to emit to the light uniformizing device 900 along the same optical path.
The light splitting device 200 emits the filtered different color received laser light and the second light transmitted along the second optical path in time sequence, in this embodiment, the received laser light emitted by the light splitting device 200 is red fluorescence and green fluorescence after color correction, the second light is blue laser light, and the light combining device 800 may be a reverse blue transmission yellow dichroic mirror.
Fig. 5 is a light transmittance curve of the light combining device 800 shown in fig. 1. In a preferred embodiment, as shown in fig. 5, the light combining device 800 is a band-stop filter, that is, the light combining device 800 prevents light with a wavelength range of 560-600nm from passing through, so as to obtain red light and green light with relatively pure colors as primary colors, while the blue laser itself has relatively high color purity and does not need to be filtered and color-repaired. In the embodiment where the second light is blue fluorescent light, the light combining device 800 may be provided to filter the incident blue fluorescent light to obtain blue primary light with high color purity.
As shown in fig. 1, the light source system 10 further includes some necessary optical guiding elements, such as relay lenses 501, 502, 503, 504 and a reflector 600, it is understood that the light source system 10 can also add or delete specific guiding elements, and the specific positions of the above optical elements can also be flexibly set according to the needs.
In the light source system 10 provided by the present invention, the light splitting device 200 is used to guide a part of the excitation light to the first light path for wavelength conversion to obtain the stimulated light, and guide another part of the excitation light to the second light path to obtain the second light, and the filtered stimulated light and the second light emitted from the light splitting device 200 are guided by the light combining device 800 and then emitted along the same light path to obtain the light source light emitted from the light source system 10. The light source system 10 avoids using an area diaphragm, so that the angle distribution of the transmitted light beams in the light source system 10 is continuous, yellow spots cannot appear in far-field light spots, the uniformity of emergent light rays of the light source system 10 and the display device is improved, and the light efficiency and the reliability of the light source system 10 are improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several of the means recited in the apparatus claims may also be embodied by one and the same means or system in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A light source system, comprising:
an excitation light source for emitting excitation light;
the light splitting device is used for sequentially splitting the exciting light into first light transmitted along a first light path and second light transmitted along a second light path, filtering the received laser light obtained after the conversion of the wavelength conversion device, and emitting the filtered received laser light and the second light along the same light path; and
and the wavelength conversion device is arranged on the first light path and is used for performing wavelength conversion on at least part of the first light to obtain the stimulated light and emitting the stimulated light to the light splitting device.
2. The light source system according to claim 1, wherein the surface of the light splitting device includes a first region and a second region, the first region is used for reflecting the excitation light and filtering the stimulated light, the second region is used for transmitting the excitation light, the light source system further includes a driving device, the light splitting device is driven by the driving device to rotate periodically, so that the first region and the second region alternately receive the excitation light.
3. The light source system according to claim 2, wherein the first region includes a first sub-region and a second sub-region both for reflecting the first light, the first sub-region and the second sub-region are further for filtering light of different colors, respectively, and the first sub-region and the second sub-region alternately receive the excitation light under the driving of the driving device.
4. The light source system of claim 3, wherein the wavelength conversion device comprises a conversion region for receiving the excitation light and emitting an excited light comprising one color light.
5. The light source system according to claim 3, wherein the wavelength conversion device includes a conversion region, the conversion region includes a first section and a second section, the first section is used for converting the first light into the excited light of the first color, the second section is used for converting the first light into the excited light of the second color, the first section and the second section are periodically located on the optical path of the first light, the first light emitted from the first sub-region of the light splitting device is incident to the first section, and the excited light emitted from the first section is filtered by the first sub-region and then emitted along the same optical path as the second light; and the second light emitted from the second sub-region of the light splitting device enters the second section, and the received laser light emitted from the second section is filtered by the second sub-region and then emitted along the same light path with the second light.
6. The light source system according to claim 2, wherein the second region is provided with a transmissive diffusion sheet.
7. The light source system according to any one of claims 1 to 6, further comprising a light combining device, wherein the light combining device is configured to filter the received laser light and the second light emitted from the light splitting device, and guide the received laser light and the second light emitted from the light splitting device to emit along the same optical path.
8. The light source system of claim 7, wherein the light combining means is a band stop filter.
9. The light source system of claim 7, wherein the excitation light is blue light, and the stimulated light emitted from the light combining device includes red light and green light.
10. A display device characterized by comprising a light source system according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521191.0A CN111308842A (en) | 2018-12-12 | 2018-12-12 | Light source system and display device |
| PCT/CN2019/119153 WO2020119398A1 (en) | 2018-12-12 | 2019-11-18 | Light source system and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521191.0A CN111308842A (en) | 2018-12-12 | 2018-12-12 | Light source system and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111308842A true CN111308842A (en) | 2020-06-19 |
Family
ID=71076192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811521191.0A Pending CN111308842A (en) | 2018-12-12 | 2018-12-12 | Light source system and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111308842A (en) |
| WO (1) | WO2020119398A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140071182A1 (en) * | 2012-09-10 | 2014-03-13 | Tatsuya Takahashi | Illumination light source device and projector provided with the same, and control method of the projector |
| CN104345530A (en) * | 2013-07-30 | 2015-02-11 | 台达电子工业股份有限公司 | Display light source module |
| CN104641289A (en) * | 2012-09-18 | 2015-05-20 | 株式会社理光 | Illumination device, projector, and illumination method |
| CN108153089A (en) * | 2016-12-02 | 2018-06-12 | 中强光电股份有限公司 | Lighting system and use its projection arrangement |
| CN108535943A (en) * | 2017-03-03 | 2018-09-14 | 深圳市光峰光电技术有限公司 | A kind of light supply apparatus and its projection display system |
| CN208188567U (en) * | 2018-05-17 | 2018-12-04 | 中强光电股份有限公司 | Lighting system and projection arrangement |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424971B (en) * | 2012-05-16 | 2015-09-09 | 深圳市绎立锐光科技开发有限公司 | Light-source system and relevant projecting system |
| CN205353549U (en) * | 2016-01-07 | 2016-06-29 | 深圳市绎立锐光科技开发有限公司 | Light source device and lighting device |
| JP6701775B2 (en) * | 2016-02-12 | 2020-05-27 | セイコーエプソン株式会社 | Wavelength conversion element, lighting device and projector |
| CN107621744A (en) * | 2016-07-13 | 2018-01-23 | 深圳市光峰光电技术有限公司 | Light source and projecting apparatus |
| CN108303838A (en) * | 2016-09-27 | 2018-07-20 | 中航国画（上海）激光显示科技有限公司 | A kind of blue light source all -fiber transmission laser projection |
-
2018
- 2018-12-12 CN CN201811521191.0A patent/CN111308842A/en active Pending
-
2019
- 2019-11-18 WO PCT/CN2019/119153 patent/WO2020119398A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140071182A1 (en) * | 2012-09-10 | 2014-03-13 | Tatsuya Takahashi | Illumination light source device and projector provided with the same, and control method of the projector |
| CN104641289A (en) * | 2012-09-18 | 2015-05-20 | 株式会社理光 | Illumination device, projector, and illumination method |
| CN104345530A (en) * | 2013-07-30 | 2015-02-11 | 台达电子工业股份有限公司 | Display light source module |
| CN108153089A (en) * | 2016-12-02 | 2018-06-12 | 中强光电股份有限公司 | Lighting system and use its projection arrangement |
| CN108535943A (en) * | 2017-03-03 | 2018-09-14 | 深圳市光峰光电技术有限公司 | A kind of light supply apparatus and its projection display system |
| CN208188567U (en) * | 2018-05-17 | 2018-12-04 | 中强光电股份有限公司 | Lighting system and projection arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020119398A1 (en) | 2020-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180172978A1 (en) | Projection system, light source system and light source assembly | |
| JP2020154024A (en) | Light source optical system, light source device, and image projection device | |
| CN112147836B (en) | Light source system and display device | |
| JP2016224304A (en) | Light source device, projection type display device and light generation method | |
| US11650491B2 (en) | Light-source system for optical projection and projection device comprising the same | |
| US11822221B2 (en) | Light source system and projection apparatus | |
| US10185214B2 (en) | Projector and image display method including a light separation optical system | |
| CN110874005B (en) | Light source system, method for improving light efficiency of light source system and display device | |
| CN110389488B (en) | Light source system and projection equipment | |
| CN110471245B (en) | Light source system, projection apparatus, and illumination apparatus | |
| US11774843B2 (en) | Light source system and display device | |
| JP2022085665A (en) | Light source device, image projection device, and light source optical system | |
| CN110955104B (en) | Light source system and projection system | |
| JP2014186080A (en) | Light source device and projection video display device | |
| CN113406850B (en) | Projection system | |
| CN111308842A (en) | Light source system and display device | |
| US10551031B2 (en) | Light source apparatus and projection display apparatus | |
| WO2021008332A1 (en) | Light source system and display device | |
| US11175578B2 (en) | Light source system and projection system using the same | |
| CN113126408A (en) | Wavelength conversion device, light source device and projection system | |
| CN111352287A (en) | Light source system and projection equipment | |
| CN112213909B (en) | Light source system and display device | |
| CN111198410B (en) | Scattering element, light source system and display device | |
| CN217767174U (en) | Light source device and projection system | |
| JP2021182080A (en) | Light source optical system, light source device and image projection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |