CN114563909A - Projection lighting system - Google Patents
Projection lighting system Download PDFInfo
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- CN114563909A CN114563909A CN202210245895.XA CN202210245895A CN114563909A CN 114563909 A CN114563909 A CN 114563909A CN 202210245895 A CN202210245895 A CN 202210245895A CN 114563909 A CN114563909 A CN 114563909A
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- 238000005286 illumination Methods 0.000 claims abstract description 54
- 230000005284 excitation Effects 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 6
- 239000011241 protective layer Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/141—Beam splitting or combining systems operating by reflection only using dichroic mirrors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a projection lighting system, which comprises a first laser light source array, a second LED light source, an LED collimating lens group, a fluorescent wheel, a fluorescent collimating lens group, a light guide system, a condensing lens and a light rod, wherein the light guide system comprises a first dichroic mirror and a second dichroic mirror, the light guide system divides a first wavelength laser beam into two parts, the first part of the first wavelength laser beam is reflected to the light rod by the first dichroic mirror, and the second part of the first wavelength laser beam is excited by the fluorescent wheel after penetrating through the second dichroic mirror to generate a third wavelength lighting beam; the second LED light source provides a second wavelength illumination beam; the illumination light path of the invention reduces the volume of the whole illumination system and improves the utilization rate of light energy.
Description
Technical Field
The invention relates to the technical field of laser projection display, in particular to a projection lighting system.
Background
In recent years, projectors are widely used in business, education, engineering, and home. Consumer performance requirements for projection systems are also increasing, including brightness, color gamut, contrast, lifetime, and cost performance.
The illumination system plays a crucial role in the performance of the projector. Generally, an illumination system needs to convert light energy provided by a light source into red, green and blue illumination light beams, and converge the illumination light beams to a DMD (digital micromirror device) or a liquid crystal panel, and finally display a color image on a screen through a projection lens.
Currently, the cost of blue laser is usually low due to high conversion efficiency of semiconductor material required by blue laser and mass production. However, the red and green lasers have higher prices, which are not favorable for controlling the overall cost of the projector. In addition, the thermal attenuation effect of the red phosphor is very significant, and therefore, a commonly used projection illumination system at present usually uses a blue laser to excite a fluorescent wheel containing yellow and green phosphors to generate yellow and green light beams, and then uses a filtering color wheel to filter out the color light of an unnecessary waveband to generate the required red and green illumination light beams.
However, in the above-mentioned projection illumination system, the fluorescent excitation region and the blue light transmission region are both included on the fluorescent wheel, and an additional blue light path is required, thereby increasing the volume of the whole illumination system. In addition, Ce, which is currently commonly used: YAG yellow phosphor has a spectrum ranging from green to red, and thus a large amount of useless light is filtered out in actual lighting, resulting in waste of light energy. And, Ce: the proportion of the red spectrum in the YAG phosphor is significantly lower than that of the green spectrum, and the green light content is further reduced during the white balance process to maintain the effect of the projection picture.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a projection illumination system which is compact and has an improved utilization rate of light energy.
The invention realizes the purpose through the following technical scheme:
a projection lighting system comprises a first laser light source array, a second LED light source, an LED collimating mirror group, a fluorescent wheel, a fluorescent collimating mirror group, a light guide system, a condensing lens and a light rod;
the first laser light source array is used for providing first wavelength laser beams;
the second LED light source is used for providing a second wavelength illumination light beam;
the LED collimating lens group is used for collimating the second wavelength illuminating light beam;
the fluorescent wheel is used for generating a third wavelength illumination beam under excitation;
the fluorescent collimating lens group is used for collimating the illumination beam with the third wavelength;
the light guide system is used for guiding the illumination light beams to the condensing lens;
the condenser lens is used for converging the illumination light beam to the light rod inlet;
the light bar is used for homogenizing the illumination light beam.
The light guide system comprises a first dichroic mirror and a second dichroic mirror, the light guide system divides the first wavelength laser beam into two parts, the first part of the first wavelength laser beam is reflected to the light bar by the first dichroic mirror, and the second part of the first wavelength laser beam penetrates through the second dichroic mirror and is excited by the fluorescent wheel to generate a third wavelength illumination beam.
The light guide system further comprises an optical wheel, a second dichroic mirror and a third dichroic mirror; the optical wheel comprises a reflection area and a transmission area, wherein the reflection area is used for reflecting the incident laser beam with the first wavelength to the condenser lens; the transmission region transmits the incident laser beam with the first wavelength to the fluorescent collimating lens group and focuses the laser beam on the fluorescent wheel to be converted into the illumination beam with the third wavelength.
The laser light source array is two independent laser light source arrays and is arranged at two sides of the light guide system; the light guide system comprises a fourth dichroic mirror and a third dichroic mirror, the first part of the first wavelength laser beams are reflected to the light bar by the fourth dichroic mirror of the light guide system, and the second part of the first wavelength laser beams are reflected to the fluorescent wheel through the fourth dichroic mirror and are excited to generate third wavelength illumination beams.
Further, the fluorescence wheel comprises only one fluorescence excitation region.
The fluorescent excitation area on the fluorescent wheel is of a three-layer structure, the bottom layer is a substrate plated with a metal reflection increasing film for reflecting excitation light and fluorescent light, the middle layer is a fluorescent powder layer coated with fluorescent powder with corresponding colors, the upper layer is an optical protection layer, and an antireflection film is plated on the fluorescent powder layer for maximizing the laser and fluorescent transmittance.
Further, the light guide system is configured in the propagation direction of the first wavelength laser beam.
The first laser light source array is provided with at least two groups of laser elements; the laser light source array is driven by a pulse current.
Further, the reflection region is plated with a reflection increasing film.
The invention has the beneficial effects that:
according to the projection illumination system, the directions of the illumination light beams with different colors are adjusted through the light guide system, and the fluorescent wheel structure does not need to be provided with the light transmission area, so that the illumination system can be miniaturized. In addition, the combination of the monochromatic laser array light source, the LED light source and the pure-color fluorescent wheel improves the light energy utilization rate of the lighting system and reduces the cost at the same time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the embodiments or the drawings needed to be practical in the prior art description, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a projection illumination system according to an embodiment of the present invention;
FIG. 2 is a schematic view of another projection illumination system according to an embodiment of the present invention;
FIG. 3 is a schematic view of a projection illumination system according to another embodiment of the present invention;
FIG. 4 is a front view of the optical wheel structure of FIG. 2;
in the drawings, the reference numbers: 100-a first laser light source array; 110-a first portion of a first wavelength laser beam; 120-a second portion of the first wavelength laser beam; 200-a second LED light source; 210-a set of LED collimators; 300-a fluorescent wheel; 310-a fluorescent collimating lens group; 10-a light guide system; 20-a condenser lens; 30-a light bar; 11-a second dichroic mirror; 12-a first dichroic mirror; 40-a third dichroic mirror; 50-fourth dichroic mirror.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a projection lighting system, which includes a first laser light source array 100, a second LED light source 200, an LED collimator set 210, a fluorescent wheel 300, a fluorescent collimator set 310, a light guide system 10, a condensing lens 20, and a light rod 30. The first laser light source array 100 is configured to provide a first part of first wavelength laser beams 110 and a second part of first wavelength laser beams 120, the second LED light source 200 is configured to provide a second wavelength laser beams, the light guide system 10 includes a second dichroic mirror 11 and a first dichroic mirror 12, the LED collimating lens group is composed of a lens 201 and a lens 202 and configured to collimate the second wavelength LED beams, and the fluorescence collimating lens group is composed of a lens 301 and a lens 302 and configured to collimate the excited fluorescence.
The lighting light path is as follows: as shown in fig. 1, a first portion of a first wavelength laser beam 110 and a second portion of a first wavelength laser beam 120 emitted by a first laser light source array 100 are irradiated on a light guide system 10, wherein the first portion of the first wavelength laser beam 110 is irradiated on a first dichroic mirror 12, reflected by the first dichroic mirror, transmitted through a second dichroic mirror 11, and condensed by a condenser lens 20 to enter a light rod; the second part of the first wavelength laser beam 120 passes through the second dichroic mirror 11, is focused on the fluorescent wheel 300 by the fluorescent collimating lens group 310, is converted into third wavelength fluorescent light, is reflected, is collimated by the fluorescent collimating lens group 310 again, is reflected by the second dichroic mirror 11 to the condenser lens 20, and is converged into the light rod. The second LED light source 200 emits a second wavelength light beam, which is collimated by the LED collimator set 210, then reaches the condensing lens through the light guide system 10, and then converges to the light rod.
In this embodiment, as shown in fig. 1, the first wavelength laser beam emitted by the first laser light source array 100 is a blue laser beam, and the second wavelength laser beam emitted by the second light source 200 is a red laser beam. The first laser light source array 100 at least includes 2 sets of lasers, one portion of which is irradiated on the first beam splitter 12, and the other portion of which is irradiated on the second beam splitter 11, but the invention is not limited thereto.
The light guiding system 10 in this example comprises a second dichroic mirror 11 and a first dichroic mirror 12; the second dichroic mirror 11 can transmit blue and red wavelength band light at the same time and reflect green wavelength band light; the first dichroic mirror 12 transmits light in the red wavelength band and reflects light in the blue wavelength band.
In the present embodiment, the fluorescent wheel 300 is located on the propagation path of the first wavelength laser beam 120 and the fluorescent wheel 300 only includes green phosphor. As shown in fig. 1, the first wavelength laser beam 120 is incident on the fluorescent wheel 300 through the second dichroic mirror 11 and the fluorescent collimating mirror set 310 and is converted into a third wavelength fluorescent beam.
As shown in FIG. 1, the red illumination beam is provided by a red LED light source 200, the blue illumination beam is provided by a first portion of the first wavelength laser beam 110, and the green illumination beam is provided by a second portion of the first wavelength laser beam 120 exciting a fluorescent wheel 300. By the scheme of the embodiment, the illumination light path can be miniaturized. In addition, the use of the red LED and the pure green fluorescent wheel also improves the light combining efficiency of the illumination system while saving cost.
Fig. 2 is a schematic view of another lighting system structure according to an embodiment of the present invention. Referring to fig. 2, in the present embodiment, the lighting system of fig. 2 is similar to that of fig. 1, with the following differences: the light guide system 10 comprises an optical wheel 14, a second dichroic mirror 11 and a third dichroic mirror 40; the second LED light source 200 emits a second wavelength light beam, which is collimated by the LED collimator set 210, reflected by the third dichroic mirror 40, and converged by the condenser lens 20 to enter the light rod.
As shown in fig. 4, the optical wheel 12 is divided into a reflection area 1 and a transmission area 2, wherein the reflection area 1 is coated with a reflection increasing film and can reflect incident blue laser, the reflected blue laser passes through the second dichroic mirror 11 and the third dichroic mirror 40 and irradiates on the condenser lens 20, and enters into the optical rod after being converged by the condenser lens 20, the transmission area 2 transmits the incident blue laser to the fluorescence collimating lens group 310 and focuses on the fluorescent wheel 300 to be converted into third wavelength fluorescence, and the transmission area 2 can be air or a diffusion sheet. Furthermore, the reflective region 1 and transmissive region 2 should be reasonably weighted to maintain balance of the optic wheel 12 and minimize noise.
In the present embodiment, the third dichroic mirror 40 transmits blue and green wavelength band light and reflects red wavelength band light.
As shown in fig. 2, in the embodiment of fig. 2, the red illumination beam is provided by a red LED light source 200, the blue illumination beam is provided by the first portion of the first wavelength laser beam 110, and the green illumination beam is provided by the first portion of the first wavelength laser beam 110 and the second portion of the first wavelength laser beam 120 transmitted through the transmissive region 2 to excite the fluorescent wheel 300. By the scheme of the embodiment, the energy of the exciting light irradiated on the fluorescent wheel 300 is increased, and the light effect of the illumination system is further enhanced.
Fig. 3 is a schematic diagram of an architecture of another lighting system according to an embodiment of the present invention. In the present embodiment, the differences of the illumination system are as follows: the first laser light source array is divided into two parts, so that the first part of the first wavelength laser beam 110 and the second part of the first wavelength laser beam 120 are respectively located at two sides of the light guide system 10, and the light guide system 10 includes a fourth dichroic mirror 50 and a third dichroic mirror 40, both sides of which are respectively coated with a film. In addition, the second LED light source 200 emits a second wavelength light beam, which is collimated by the LED collimator set 210, reflected by the third dichroic mirror 40, and condensed by the condenser lens 20 to enter the light rod.
Referring to fig. 3, in the present embodiment, the differences of the illumination system are as follows: the first blue part of the first wavelength laser beam 110 and the second part of the first wavelength laser beam 120 emitted by the first laser light source array 100 are respectively irradiated on two sides of the fourth dichroic mirror 50, wherein the first blue part of the first wavelength laser beam 110 is reflected by the fourth dichroic mirror 50, passes through the third dichroic mirror 40, is condensed by the condensing lens 20, and then enters the light bar; the blue second part of the first wavelength laser beam 120 is reflected by the fourth dichroic mirror 50, focused on the fluorescent wheel 300 by the fluorescent collimating lens assembly 310, converted into green fluorescent light, reflected, collimated by the fluorescent collimating lens assembly 310 again, and then sequentially passes through the fourth dichroic mirror 50, the third dichroic mirror 40 to the condensing lens 20 and is converged into the light rod.
As shown in FIG. 3, the red illumination beam is provided by the red LED light source 200, the blue illumination beam is provided by the first portion of the first wavelength laser beam 110, and the green illumination beam is provided by the second portion of the first wavelength laser beam 120 exciting the fluorescent wheel 300. Through the scheme of the embodiment, the system optical path is further simplified.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition. In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (7)
1. A projection lighting system is characterized by comprising a first laser light source array, a second LED light source, an LED collimating lens group, a fluorescent wheel, a fluorescent collimating lens group, a light guide system, a condensing lens and a light rod;
the first laser light source array is used for providing first wavelength laser beams;
the second LED light source is used for providing a second wavelength illumination light beam;
the LED collimating lens group is used for collimating the second wavelength illuminating light beam;
the fluorescent wheel is used for generating a third wavelength illumination beam under excitation;
the fluorescent collimating lens group is used for collimating the illumination beam with the third wavelength;
the light guide system is used for guiding the illumination light beams to the condensing lens;
the condenser lens is used for converging the illumination light beam to the light rod inlet;
the light bar is used for homogenizing the illumination light beam.
2. A projection illumination system as claimed in claim 1, characterized in that the laser light source arrays are two separate laser light source arrays and are arranged on both sides of the light guide system; the light guide system comprises a fourth dichroic mirror and a third dichroic mirror, the first part of the first wavelength laser beams are reflected to the light bar by the fourth dichroic mirror of the light guide system, and the second part of the first wavelength laser beams are reflected to the fluorescent wheel through the fourth dichroic mirror and are excited to generate third wavelength illumination beams.
3. A projection illumination system as claimed in claim 1, characterized in that the fluorescence wheel comprises only one fluorescence excitation zone.
4. The projection illumination system of claim 1, wherein the fluorescence excitation area of the fluorescence wheel has a three-layer structure, the bottom layer is a substrate coated with a metal reflection increasing film for reflecting the excitation light and the fluorescence, the middle layer is a phosphor layer coated with phosphors of corresponding colors, the upper layer is an optical protective layer, and the phosphor layer is coated with an anti-reflection film for maximizing the transmission rate of the laser light and the fluorescence.
5. A projection illumination system as claimed in claim 1, characterized in that the light-guiding system is arranged in the propagation direction of the laser beam of the first wavelength.
6. A projection illumination system as claimed in claim 1, characterized in that the first laser light source array has at least two groups of laser elements.
7. A projection illumination system as claimed in claim 1, characterized in that the first laser light source array is driven by pulsed current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210245895.XA CN114563909A (en) | 2021-08-11 | 2021-08-11 | Projection lighting system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210245895.XA CN114563909A (en) | 2021-08-11 | 2021-08-11 | Projection lighting system |
| CN202110920569.XA CN113568265A (en) | 2021-08-11 | 2021-08-11 | Projection lighting system |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110920569.XA Division CN113568265A (en) | 2021-08-11 | 2021-08-11 | Projection lighting system |
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| CN114563909A true CN114563909A (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110920569.XA Pending CN113568265A (en) | 2021-08-11 | 2021-08-11 | Projection lighting system |
| CN202210245895.XA Pending CN114563909A (en) | 2021-08-11 | 2021-08-11 | Projection lighting system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110920569.XA Pending CN113568265A (en) | 2021-08-11 | 2021-08-11 | Projection lighting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023186708A1 (en) * | 2022-03-29 | 2023-10-05 | Signify Holding B.V. | Lightguide lamp with crosstalk prevention |
| CN117850138A (en) * | 2022-09-30 | 2024-04-09 | 深圳洛克创新科技有限公司 | Projection lighting device and projection equipment |
| CN117850137A (en) * | 2022-09-30 | 2024-04-09 | 深圳洛克创新科技有限公司 | Light source module and projection equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019017A (en) * | 2011-09-26 | 2013-04-03 | 三洋电机株式会社 | Projection display apparatus |
| JP2013101317A (en) * | 2011-10-20 | 2013-05-23 | Panasonic Corp | Lighting device and projection type image display device using the same |
| CN205691928U (en) * | 2016-06-17 | 2016-11-16 | 广景视睿科技（深圳）有限公司 | A kind of projection lighting optical path |
| US20210191138A1 (en) * | 2019-12-24 | 2021-06-24 | Jinhui Zhai | Multi-channels high brightness light engine apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955340A (en) * | 2011-08-29 | 2013-03-06 | 鸿富锦精密工业（深圳）有限公司 | Light source device of projector |
| JP2014199412A (en) * | 2013-03-14 | 2014-10-23 | 株式会社リコー | Illumination light source device and projection device including the same |
| JP2015022249A (en) * | 2013-07-23 | 2015-02-02 | 株式会社リコー | Optical path branching optical system, illumination light source device utilizing optical path branching optical system, image display device utilizing illumination light source device and projection device utilizing image display device |
| CN103399452A (en) * | 2013-08-23 | 2013-11-20 | 中国华录集团有限公司 | Light source device of projector |
| JP6476667B2 (en) * | 2013-11-01 | 2019-03-06 | 株式会社リコー | Light source device and projector using the same |
| JP6968339B2 (en) * | 2017-11-17 | 2021-11-17 | ウシオ電機株式会社 | Fluorescent light source device |
| CN109839793B (en) * | 2017-11-28 | 2021-01-29 | 中强光电股份有限公司 | Projector and illumination system thereof |
-
2021
- 2021-08-11 CN CN202110920569.XA patent/CN113568265A/en active Pending
- 2021-08-11 CN CN202210245895.XA patent/CN114563909A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019017A (en) * | 2011-09-26 | 2013-04-03 | 三洋电机株式会社 | Projection display apparatus |
| JP2013101317A (en) * | 2011-10-20 | 2013-05-23 | Panasonic Corp | Lighting device and projection type image display device using the same |
| CN205691928U (en) * | 2016-06-17 | 2016-11-16 | 广景视睿科技（深圳）有限公司 | A kind of projection lighting optical path |
| US20210191138A1 (en) * | 2019-12-24 | 2021-06-24 | Jinhui Zhai | Multi-channels high brightness light engine apparatus |
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