CN111045217A - Four-channel color combining device with hybrid package - Google Patents
Four-channel color combining device with hybrid package Download PDFInfo
- Publication number
- CN111045217A CN111045217A CN202010051050.8A CN202010051050A CN111045217A CN 111045217 A CN111045217 A CN 111045217A CN 202010051050 A CN202010051050 A CN 202010051050A CN 111045217 A CN111045217 A CN 111045217A
- Authority
- CN
- China
- Prior art keywords
- light
- source
- group
- light emitting
- emitting
- 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
- 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
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4012—Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a four-channel color combining device containing light emitting chips with different wavelengths for mixed packaging, which belongs to the technical field of semiconductor illumination and provides a semiconductor illumination light source from near ultraviolet to near infrared spectrum range, and can simultaneously meet the illumination requirements of NBI imaging, visible light color imaging, fluorescence imaging and the like.
Description
Technical Field
The invention relates to a four-channel color combining device containing mixed packaging of semiconductor chips emitting different wavelengths, and belongs to the technical field of semiconductor illumination.
Background
In recent years, various semiconductor illumination technologies such as LED, semiconductor laser, VCSEL, etc. have been developed vigorously, and new technological approaches have been developed for various applications. Meanwhile, new applications in various industries also put new demands on semiconductor lighting technologies.
Semiconductor illumination technology has found widespread use in recent years in the field of minimally invasive endoscopes. With the development of applications of ICG fluorescence technology, autofluorescence technology, NBI technology in the field of endoscopy, new demands and challenges are also posed to the illumination light source. If the endoscope illumination light source is required to simultaneously meet the requirements of NBI imaging, visible light color imaging and ICG fluorescence imaging, and the spectrum range of the illumination light source is required to cover from near ultraviolet to near infrared (365 nm to 810 nm), the illumination light source can be realized by adopting more than 5 semiconductor light sources by using an optical color combination method. The lighting color combination system with more than 5 channels has the advantages of complex optical color combination structure, large volume and high cost. For this reason, in the lighting system with unlimited etendue, semiconductor light emitting chips with adjacent wavelengths may be mixed and packaged in the same channel to reduce the number of color combining channels, or the same number of channels may be used to achieve color combining output in more bands.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a semiconductor lighting source from near ultraviolet to near infrared spectrum range, and simultaneously meet the lighting requirements of NBI imaging, visible light color imaging, fluorescence imaging and the like, and the method comprises the following steps: the device can realize the color combination output of at most 8 kinds of illuminating light covering the wavelength range from near ultraviolet to near infrared by adopting the mode of collimation, relay and refocusing to form four-channel color combination, and at least one channel contains a semiconductor light source of mixed package of two emission wavelength chips.
The technical solution of the present invention will now be described in detail with reference to the accompanying drawings.
A four-channel color combining device containing light emitting chips with different wavelengths in mixed packaging comprises four light source groups, namely a first light source group (1), a second light source group (2), a third light source group (3) and a fourth light source group (4), wherein each light source group comprises a light emitting source and a collimating lens group, the center of the light emitting surface of the light emitting source of each light source group is positioned on the optical axis of the collimating lens group, and the light emitting surface is positioned on the front focal surface of the collimating lens group, namely the first light source group (1) comprises a first light emitting source (11) with an emission waveband range of B1 and a first collimating lens group (12), the center of the light emitting surface of the first light emitting source (11) is positioned on the optical axis of the first collimating lens group (12), the light emitting surface of the first light emitting source (11) is positioned on the front focal surface of the first collimating lens group (12), the second light source group (2) comprises a second light emitting source (21) with an emission waveband, the center of the light emitting surface of the light emitting source II (21) is positioned on the optical axis of the collimating lens group II (22), the light emitting surface of the light emitting source II (21) is positioned on the front focal surface of the collimating lens group II (22), the third light source group (3) comprises a light emitting source III (31) with an emission waveband range of B3 and a collimating lens group III (32), the center of the light emitting surface of the light emitting source III (31) is positioned on the optical axis of the collimating lens group III (32), the light emitting surface of the light emitting source III (31) is positioned on the front focal surface of the collimating lens group III (32), the fourth light source group (4) comprises a light emitting source IV (41) with an emission waveband range of B4 and a collimating lens IV (42), the center of the light emitting surface of the light emitting source IV (41) is positioned on the optical axis of the collimating lens group IV (42), the light emitting surface of the light emitting source IV (41) is positioned on the front focal surface of the collimating lens group IV (42), and, the light source device is characterized by further comprising three relay groups, three color combining mirrors and a focusing mirror group, wherein the three color combining mirrors are respectively a first color combining mirror (91), a second color combining mirror (92) and a third color combining mirror (93), the first color combining mirror (91) is a color filter of a reflection waveband B2 transmission waveband B1, the center of the first color combining mirror (91) is positioned at the intersection point of the optical axes of the first light source group (1) and the second light source group (2), the second color combining mirror (92) is a color filter of a reflection waveband B3 transmission waveband B1 and B2, the third color combining mirror (93) is a color filter of a reflection waveband B3 transmission waveband B1, B2 and B3, the three relay groups are respectively a first relay group (5), a second relay group (6) and a third relay group (7), the first relay group (5) comprises a first relay lens (51) and a second relay lens (52), the first relay lens (51) and the second relay lens (52) share an optical axis, the first relay lens (51) is positioned behind the first color combining mirror (91) and shares the optical axis with the first light source group (1), the first relay lens (51), the second color combining mirror (92), the second relay lens (52), the third color combining mirror (93) and the focusing lens group (8) are sequentially coaxially arranged, the second relay group (6) comprises a third relay lens (61) and a second relay lens (52), namely the first relay group (5) and the second relay group (6) share the second relay lens (52), the third relay lens (61) is positioned behind the third collimator group (32) and shares the optical axis with the third collimator group (32), the optical axis of the third relay lens (61) is perpendicular to the optical axis of the first relay lens (51) and intersects at the center of the second color combining mirror (92), the third relay group (7) comprises a relay lens four (71) and a relay lens five (72), the relay lens four (71) and the relay lens five (72) are coaxial, are also coaxial with the collimating lens group four (42) and are positioned behind the collimating lens group four (42), the optical axis of the relay lens five (72) is perpendicular to the optical axis of the relay lens two (52) and intersects at the center of the third color combining mirror (93), the light-emitting source I (11), the light-emitting source II (21), the light-emitting source III (31) and the light-emitting source IV (41) are all semiconductor light-emitting sources, the light-emitting chips are LEDs, LDs or VCSELs, the light-emitting source I (11), the light-emitting source II (21), and at least one of the light-emitting sources III (31) and the light-emitting source IV (41) is formed by mixing and packaging.
The technical scheme of the invention is further technically characterized in that the light-emitting sources emitting only a single waveband in the light-emitting source I (11), the light-emitting source II (21), the light-emitting source III (31) and the light-emitting source IV (41) are packaged in series or in parallel by adopting a plurality of same chips.
The technical scheme of the invention is further technically characterized in that the light-emitting sources of two wave bands are emitted from the light-emitting source I (11), the light-emitting source II (21), the light-emitting source III (31) and the light-emitting source IV (41), each wave band adopts the same number of light-emitting chips and is symmetrically arranged, and when the number of the light-emitting chips of the same wave band is more than 1, the same light-emitting chips are connected in series or in parallel.
The technical solution of the present invention is further technically characterized in that the emission center wavelengths of the light emitting chips of the hybrid package are in adjacent positions in all color-combined bands.
The technical scheme of the invention is further technically characterized in that the central wavelengths of the waveband ranges B1, B2, B3 and B4 are from large to small, namely lambdaB1>λB2>λB3>λB4。
The invention has the advantages that:
1. by means of multi-band chip mixed packaging, spectrum output of 8 bands can be achieved at most by adopting 4 channels, and the spectrum range of the semiconductor illumination light source is effectively enriched;
2. the mode of collimation, relay and refocusing is adopted, uniform illumination distribution can be obtained on the back focal plane of the focusing lens group, and the illumination uniformity is improved.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of a four-channel color combination device.
FIG. 2: the first light source, the second light source and the third light source of the first embodiment are schematically illustrated in a package structure.
FIG. 3: the chip arrangement of the four light-emitting sources in the second embodiment is schematically illustrated.
Detailed Description
The first embodiment is as follows: the present embodiment has a structure identical to that described in the summary of the invention, and only the key data is listed to avoid duplication. The first light emitting source 11 is a red light LED with an emission center wavelength of 635nm, 4 light emitting chips with a wavelength of 1mm × 1mm are connected in parallel, the second light emitting source 21 is a green light LED with an emission center wavelength of 525nm, 4 light emitting chips with a wavelength of 1mm × 1mm are connected in parallel, the third light emitting source 31 is a blue light LED with emission center wavelengths of 415nm and 465nm respectively, two light emitting chips with a wavelength of 1mm × 1mm are respectively used, the chips with the same emission wavelength are connected in parallel, the fourth light emitting source 41 is a semiconductor laser with an emission wavelength of 808nm, the chip packaging structure schematic diagram of the first light emitting source 11, the second light emitting source 21 and the third light emitting source 31 is shown in fig. 2, and the embodiment can realize color combination output of 5 wave band lights with center wavelengths of 415nm, 465nm, 525nm, 635nm and 808.
The working principle is as follows: red light with the central wavelength of 635nm emitted from a light emitting source I11 is collimated by a collimating lens group I12, then is incident on a first color combining mirror 91, passes through the first color combining mirror 91, is incident on a relay lens 51, passes through the relay lens 51, is incident on a second color combining mirror 92, passes through the second color combining mirror 92, then passes through a relay lens 52 and a third color combining mirror, forms an image of a light emitting surface of a light source in front of a focusing lens group 8, and forms uniformly distributed illumination convergent light on a rear focal plane of the focusing lens group 8 after passing through the focusing lens group 8; green light with the central wavelength of 525nm emitted from the light emitting source II 21 is collimated by the collimating lens group 21 and then enters the first color combining mirror 91, is reflected by 90 degrees and enters the relay lens 51, passes through the relay lens 51 and then enters the second color combining mirror 92, passes through the second color combining mirror 92, then passes through the relay lens 52 and the third color combining mirror, an image of a light emitting surface of the light source is formed in front of the focusing lens group 8, and illumination convergent light which is uniformly distributed is formed on a rear focal surface of the focusing lens group 8 after passing through the focusing lens group 8; blue light with central wavelengths of 415nm and 465nm emitted from the light emitting source III 31 is collimated by the collimating lens assembly III 31, then enters the second color combining mirror 92 through the relay lens 61, is reflected by 90 degrees, then passes through the relay lens 52 and the third color combining mirror 93, and forms uniformly distributed illumination convergent light on a rear focal plane of the focusing lens assembly 8; near-infrared light of 808nm emitted from the light-emitting source four 41 passes through the collimating lens group four 41, then passes through the relay lens group 7, then enters the third color combining mirror 93, is reflected at 90 degrees in front of the focusing lens group 8 to form an enlarged image of a light-emitting surface, and passes through the focusing lens group 8 to form uniformly distributed illumination convergent light on a rear focal surface of the focusing lens group 8. Therefore, the light of five wave bands of the four channels is converged and output, and the color combination of the four channels and the five wave bands is realized.
Example two: the present embodiment has a structure identical to that described in the summary of the invention, and only the key data is listed to avoid duplication. The first light emitting source 11 is a VCSEL with emission center wavelengths of 780nm and 808nm respectively, 4 light emitting chips with 1mm × 1mm are adopted to be connected in series, the second light emitting source 21 is an LED with emission center wavelengths of 635nm and 560nm respectively, 4 light emitting chips with 1mm × 1mm are adopted to be connected in series, the third light emitting source 31 is an LED with emission center wavelengths of 475nm and 530nm respectively, 4 light emitting chips with 1mm × 1mm are adopted to be connected in series, the fourth light emitting source 41 is an LED with emission center wavelengths of 365nm and 415nm respectively, 4 light emitting chips with 1mm × 1mm are adopted to be connected in series, and the arrangement of the four light emitting sources is schematically shown in fig. 3.
The working principle of this embodiment is similar to that of the embodiment, and is not described in detail.
The technical scheme of the invention is particularly suitable for being applied to a system with unlimited optical expansion amount to realize multi-band color combination illumination.
Claims (7)
1. A four-channel color combining device containing light emitting chips with different wavelengths in mixed packaging comprises four light source groups, namely a first light source group (1), a second light source group (2), a third light source group (3) and a fourth light source group (4), wherein each light source group comprises a light emitting source and a collimating lens group, the center of the light emitting surface of the light emitting source of each light source group is positioned on the optical axis of the collimating lens group, and the light emitting surface is positioned on the front focal surface of the collimating lens group, namely the first light source group (1) comprises a first light emitting source (11) with an emission waveband range of B1 and a first collimating lens group (12), the center of the light emitting surface of the first light emitting source (11) is positioned on the optical axis of the first collimating lens group (12), the light emitting surface of the first light emitting source (11) is positioned on the front focal surface of the first collimating lens group (12), the second light source group (2) comprises a second light emitting source (21) with an emission waveband, the center of the light emitting surface of the light emitting source II (21) is positioned on the optical axis of the collimating lens group II (22), the light emitting surface of the light emitting source II (21) is positioned on the front focal surface of the collimating lens group II (22), the third light source group (3) comprises a light emitting source III (31) with an emission waveband range of B3 and a collimating lens group III (32), the center of the light emitting surface of the light emitting source III (31) is positioned on the optical axis of the collimating lens group III (32), the light emitting surface of the light emitting source III (31) is positioned on the front focal surface of the collimating lens group III (32), the fourth light source group (4) comprises a light emitting source IV (41) with an emission waveband range of B4 and a collimating lens IV (42), the center of the light emitting surface of the light emitting source IV (41) is positioned on the optical axis of the collimating lens group IV (42), the light emitting surface of the light emitting source IV (41) is positioned on the front focal surface of the collimating lens group IV (42), and, the light source device is characterized by further comprising three relay groups, three color combining mirrors and a focusing mirror group, wherein the three color combining mirrors are respectively a first color combining mirror (91), a second color combining mirror (92) and a third color combining mirror (93), the first color combining mirror (91) is a color filter of a reflection waveband B2 transmission waveband B1, the center of the first color combining mirror (91) is positioned at the intersection point of the optical axes of the first light source group (1) and the second light source group (2), the second color combining mirror (92) is a color filter of a reflection waveband B3 transmission waveband B1 and B2, the third color combining mirror (93) is a color filter of a reflection waveband B3 transmission waveband B1, B2 and B3, the three relay groups are respectively a first relay group (5), a second relay group (6) and a third relay group (7), the first relay group (5) comprises a first relay lens (51) and a second relay lens (52), the first relay lens (51) and the second relay lens (52) share an optical axis, the first relay lens (51) is positioned behind the first color combining mirror (91) and shares the optical axis with the first light source group (1), the first relay lens (51), the second color combining mirror (92), the second relay lens (52), the third color combining mirror (93) and the focusing lens group (8) are sequentially coaxially arranged, the second relay group (6) comprises a third relay lens (61) and a second relay lens (52), namely the first relay group (5) and the second relay group (6) share the second relay lens (52), the third relay lens (61) is positioned behind the third collimator group (32) and shares the optical axis with the third collimator group (32), the optical axis of the third relay lens (61) is perpendicular to the optical axis of the first relay lens (51) and intersects at the center of the second color combining mirror (92), the third relay group (7) comprises a relay lens four (71) and a relay lens five (72), the relay lens four (71) and the relay lens five (72) are coaxial, are also coaxial with the collimating lens group four (42) and are positioned behind the collimating lens group four (42), the optical axis of the relay lens five (72) is perpendicular to the optical axis of the relay lens two (52) and intersects at the center of the third color combining mirror (93), the light-emitting source I (11), the light-emitting source II (21), the light-emitting source III (31) and the light-emitting source IV (41) are all semiconductor light-emitting sources, the light-emitting chips are LEDs, LDs or VCSELs, the light-emitting source I (11), the light-emitting source II (21), and at least one of the light-emitting sources III (31) and the light-emitting source IV (41) is formed by mixing and packaging.
2. The device of claim 1, wherein the light sources emitting only a single wavelength band among the first light source (11), the second light source (21), the third light source (31) and the fourth light source (41) are packaged in series or in parallel by using a plurality of identical chips.
3. The four-channel color combining device containing the mixed package of the light-emitting chips with different wavelengths according to claim 1, wherein the light-emitting sources emitting two wavelength bands of the light-emitting source one (11), the light-emitting source two (21), the light-emitting source three (31) and the light-emitting source four (41) are symmetrically arranged, and each wavelength band uses the same number of light-emitting chips, and when the number of the light-emitting chips with the same wavelength band is greater than 1, the same light-emitting chips are connected in series or in parallel.
4. The device of claim 1, wherein the emission center wavelengths of the light emitting chips in the mixed package are adjacent in all color combining bands.
5. The device of claim 1, wherein the central wavelengths of the wavelength bands B1, B2, B3 and B4 are from large to small, i.e., λB1>λB2>λB3>λB4。
6. The four-channel color combiner containing the mixed packages of the light-emitting chips with different wavelengths according to claims 1, 2, 3 and 4, wherein the first light-emitting source (11) is a red light LED with a 635nm emission center wavelength, 4 light-emitting chips with 1mm × 1mm are connected in parallel, the second light-emitting source (21) is a green light LED with a 525nm emission center wavelength, 4 light-emitting chips with 1mm × 1mm are connected in parallel, the third light-emitting source (31) is a blue light LED with 415nm and 465nm emission center wavelengths respectively, two light-emitting chips with 1mm × 1mm are respectively used, the chips with the same emission wavelength are connected in parallel, and the fourth light-emitting source (41) is a semiconductor laser with 808nm emission wavelength.
7. The device of claim 1, 2, 3, 4 and 5, wherein the first light emitting source (11) is a VCSEL with 780nm and 808nm emission center wavelengths, each of which is formed by connecting 41 mm by 1mm light emitting chips in series, the second light emitting source (21) is an LED with 635nm and 560nm emission center wavelengths, each of which is formed by connecting 41 mm by 1mm light emitting chips in series, the third light emitting source (31) is an LED with 475nm and 530nm emission center wavelengths, each of which is formed by connecting 41 mm by 1mm light emitting chips in series, and the fourth light emitting source (41) is an LED with 365nm and 415nm emission center wavelengths, each of which is formed by connecting 41 mm by 1mm light emitting chips in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051050.8A CN111045217A (en) | 2020-01-17 | 2020-01-17 | Four-channel color combining device with hybrid package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051050.8A CN111045217A (en) | 2020-01-17 | 2020-01-17 | Four-channel color combining device with hybrid package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111045217A true CN111045217A (en) | 2020-04-21 |
Family
ID=70230671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010051050.8A Pending CN111045217A (en) | 2020-01-17 | 2020-01-17 | Four-channel color combining device with hybrid package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111045217A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458891A (en) * | 2020-05-07 | 2020-07-28 | 青岛海泰新光科技股份有限公司 | Combined method for realizing multi-channel color combination light source |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6377410B1 (en) * | 1999-10-01 | 2002-04-23 | Apollo Instruments, Inc. | Optical coupling system for a high-power diode-pumped solid state laser |
| US20080106787A1 (en) * | 2006-11-02 | 2008-05-08 | Olympus Corporation | Microscope illumination apparatus |
| CN102273030A (en) * | 2008-11-04 | 2011-12-07 | 麻省理工学院 | External-cavity one-dimensional multi-wavelength beam combining of two-dimensional laser elements |
| CN106510606A (en) * | 2016-10-27 | 2017-03-22 | 苏州国科美润达医疗技术有限公司 | Multifunctional endoscope cold light source system |
| CN209759461U (en) * | 2018-12-12 | 2019-12-10 | 深圳市真迈生物科技有限公司 | optical system and sequencing system |
-
2020
- 2020-01-17 CN CN202010051050.8A patent/CN111045217A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6377410B1 (en) * | 1999-10-01 | 2002-04-23 | Apollo Instruments, Inc. | Optical coupling system for a high-power diode-pumped solid state laser |
| US20080106787A1 (en) * | 2006-11-02 | 2008-05-08 | Olympus Corporation | Microscope illumination apparatus |
| CN102273030A (en) * | 2008-11-04 | 2011-12-07 | 麻省理工学院 | External-cavity one-dimensional multi-wavelength beam combining of two-dimensional laser elements |
| CN106510606A (en) * | 2016-10-27 | 2017-03-22 | 苏州国科美润达医疗技术有限公司 | Multifunctional endoscope cold light source system |
| CN209759461U (en) * | 2018-12-12 | 2019-12-10 | 深圳市真迈生物科技有限公司 | optical system and sequencing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458891A (en) * | 2020-05-07 | 2020-07-28 | 青岛海泰新光科技股份有限公司 | Combined method for realizing multi-channel color combination light source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7239449B2 (en) | Illumination module for color display | |
| US7144121B2 (en) | Dichroic beam combiner utilizing blue LED with green phosphor | |
| US7744241B2 (en) | High brightness light source using light emitting devices of different wavelengths and wavelength conversion | |
| KR102088741B1 (en) | Light-emitting device and projection system | |
| US10197896B2 (en) | Laser light source with reduced beam combination operation for projection display | |
| US9781394B2 (en) | Lighting device having phosphor wheel and excitation radiation source | |
| CN212029281U (en) | Light source module for narrow-band imaging | |
| CN104808425A (en) | Laser light source light beam parameter consistency adjusting device and adjusting method thereof | |
| CN111458891A (en) | Combined method for realizing multi-channel color combination light source | |
| CN110297384B (en) | Light source for projection | |
| CN111045217A (en) | Four-channel color combining device with hybrid package | |
| CN109100910A (en) | A kind of light-source system of the projector of high photosynthetic efficiency small size | |
| CN210465983U (en) | Light source coupling structure of laser diode | |
| CN210072303U (en) | Light source for projection | |
| CN113900332A (en) | Light source assembly and projection equipment | |
| US20150138753A1 (en) | Light-source apparatus | |
| CN203658717U (en) | Laser light source light beam parameter consistency adjusting device | |
| CN111198475A (en) | Blue light generation method and illumination system | |
| CN113900336B (en) | Light source assembly and projection equipment | |
| CN210090899U (en) | Hybrid projection light source | |
| GB2493994A (en) | Endoscope LED light source | |
| CN113900335A (en) | Light source assembly and projection equipment | |
| CN111367087A (en) | Laser beam combining device and method | |
| CN218441864U (en) | Reflective high-power laser lighting module | |
| CN216696971U (en) | Laser light source system and projection system |
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 |