CN111240026A - Laser lighting device - Google Patents
Laser lighting device Download PDFInfo
- Publication number
- CN111240026A CN111240026A CN202010133595.3A CN202010133595A CN111240026A CN 111240026 A CN111240026 A CN 111240026A CN 202010133595 A CN202010133595 A CN 202010133595A CN 111240026 A CN111240026 A CN 111240026A
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- China
- Prior art keywords
- fluorescence
- laser illumination
- laser
- illumination structure
- optical fiber
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- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 30
- 238000007493 shaping process Methods 0.000 claims abstract description 26
- 238000005286 illumination Methods 0.000 claims abstract description 23
- 239000012780 transparent material Substances 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 2
- 230000005284 excitation Effects 0.000 abstract description 14
- 239000000919 ceramic Substances 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 6
- 150000002500 ions Chemical class 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- -1 etc. Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
-
- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0944—Diffractive optical elements, e.g. gratings, holograms
-
- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0966—Cylindrical lenses
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
Abstract
A laser illumination structure, the structure comprising: the fluorescent unit is fixed on a transparent material, and the transparent material is fixed on a support frame; and the emergent light beam passes through the optical shaping element group and then is focused on the fluorescent unit to excite the fluorescence, and the fluorescence passes through the other optical shaping element group and then is focused and coupled into the optical fiber. The fluorescence unit is a fluorescence ceramic chip, the light source is a laser light source, the excited fluorescence is coupled into one branch of the all-in-one optical fiber after being shaped and focused by the optical element group, and the high-brightness output of emergent light is realized through the optical fiber beam combination of the multi-path fluorescence. The invention can solve the problems of insufficient irradiation distance of the existing laser searchlight, large size of a fluorescence excitation module in the laser projection technology and complex technology.
Description
Technical Field
The invention belongs to the technical field of optics, and particularly relates to a laser illumination structure.
Background
The laser light source has the advantages of energy concentration, good collimation and the like, a point light source with extremely high energy density can be formed by beam shaping, a fluorescent ceramic chip can be excited by utilizing the point light source, a laser searchlight with a very small beam divergence angle can be designed, and the irradiation distance of the laser searchlight is far greater than that of a xenon lamp and an LED lamp under the same power. However, the power density of the blue light that the fluorescent ceramic chip can bear is limited, and the phenomenon of burning the fluorescent ceramic chip will be caused by the excessively high power density, so that the current white light laser searchlight based on fluorescence excitation still has the problem of insufficient irradiation distance. In addition, the existing laser projection technology adopts a scheme of rotating the color wheel to solve the problem of burning the fluorescent ceramic chip, but the scheme of rotating the color wheel has the problems of large volume and complex technology, and the volume and the complexity of the structure of the laser projection device can be increased.
Disclosure of Invention
The embodiment of the invention provides a laser illumination structure, which is used for solving the problems of insufficient illumination distance of the existing laser searchlight and large size and complex technology of a fluorescence excitation module in a laser projection technology.
In one embodiment of the present invention, a laser illumination structure includes:
the fluorescent unit is fixed on a transparent material, and the transparent material is fixed on a support frame;
and the emergent light beam passes through the optical shaping element group and then is focused on the fluorescent unit to excite the fluorescence, and the fluorescence passes through the other optical shaping element group and then is focused and coupled into the optical fiber.
According to the embodiment of the invention, the fluorescent ceramic chip is excited by the low-power laser light source, and the excited fluorescence is coupled into one optical fiber branch of the all-in-one optical fiber after passing through the beam shaping element group, so that the problem that the fluorescent ceramic chip is burnt due to overhigh power of the laser light source is avoided, and meanwhile, high-brightness output of emergent light is realized through optical fiber beam combination of multiple paths of fluorescence.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
fig. 1 is a schematic view of a laser illumination structure according to one embodiment of the present invention.
FIG. 2 is a schematic diagram of an excitation unit according to one embodiment of the present invention.
Fig. 3 is a schematic diagram of an all-in-one optical fiber bundle according to an embodiment of the invention.
FIG. 4 is a schematic diagram of combining yellow light and blue light according to one embodiment of the present invention.
Fig. 5 is a schematic diagram of a laser illumination structure according to one embodiment of the invention.
Detailed Description
According to one or more embodiments, as shown in the figures1 and 2, a laser illumination structure. The structure includes: the fluorescent unit 1001 is fixed on a transparent material 1002, and the transparent material 1002 is fixed on a support frame 1003; the light source 101 focuses the outgoing light beam onto the fluorescence unit 1001 through the optical shaping element set 102 to excite fluorescence, and the fluorescence passes through another optical shaping element set 103 to be coupled into the optical fiber 1041. Further, the fluorescent unit 1001, the transparent material 1002 and the support 1003 together form the excitation assembly 100, the fluorescent unit 1001 is adhered to the transparent material 1002 through transparent glue, the support 1003 of the excitation assembly 100 is provided with a through hole 1004 and a groove 1005, the transparent material 1002 is fixed in the groove 1005 through the glue, and the light beam is incident on the fluorescent unit 1001 through the through hole 1004. The fluorescent unit 1001 is a fluorescent ceramic sheet, which may be YAG-Ce fluorescent ceramic, YAG-Ce fluorescent glass, YAG-Ce single crystal, etc., and other substances may be doped in the fluorescent powder body to adjust the emission spectrum, such as Cr3+Ion, Pr3+Ion, Gd3+Ions, and the like. The thickness of the fluorescent layer is more than or equal to 0.05 mm. The transparent material 1002 is a glass material, and may be quartz glass or sapphire glass. The supporting frame 1003 is made of metal, and can be made of aluminum, copper or steel, and plays a role in supporting and heat dissipation. The light source 101 is a semiconductor laser light source with a wavelength of 250nm-500 nm. The light beam emitted from the light source 101 is shaped by the optical shaping element set 102 and then focused to be incident on the fluorescent unit 1001 of the excitation assembly 100 to excite the fluorescent light. The optical shaping element group 102 is composed of a cylindrical lens 1021, a cylindrical lens 1022 and a focusing lens 1023, wherein the cylindrical lens 1021 shapes and compresses light in the fast axis direction of the light source 101, the cylindrical lens 1022 shapes and compresses light in the slow axis direction of the light source 101, light beams with quasi-circular light spots in cross section are formed after the light shapes and compresses the light in the fast axis direction and the light in the slow axis direction of the light source 101, and the light beams are focused and incident on the fluorescent unit 1001 of the excitation assembly 100 through the focusing lens 1023, and the focusing lens 1023 can be a spherical lens, an aspheric lens, a fresnel lens or a diffractive optical element. The fluorescence excited on the fluorescence unit 1001 of the excitation assembly 100 is shaped by the optical shaping element set 103 to form a focused beam coupled into the branch 1041 of the all-in-one optical fiber. Wherein the optical shaping element group 103 is composed of a lens 1031 and a lens 1032 groupAlso, the lens 1031 and the lens 1032 may be spherical lenses, aspherical lenses, fresnel lenses, or diffractive optical elements.
In accordance with one or more embodiments, an all-in-one optical fiber combining structure is shown in fig. 3. The structure includes: the all-in-one optical fiber 104, the optical fiber branches 1041, 1042.. 1043 and 1044, and the optical fiber branches 1041, 1042.. 1043 and 1044 are finally combined into one collective optical fiber branch 1045, each optical fiber branch is coupled with fluorescence, and the corresponding multiple fluorescence beams are also combined into one beam and emitted by the collective optical fiber 1045 branch. The all-in-one optical fiber 104 includes at least one optical fiber branch. The core diameters of the optical fiber branches 1041, 1042. The core of the all-in-one optical fiber 104 may be a multimode optical fiber or a single mode optical fiber.
In accordance with one or more embodiments, a yellow and blue light combining structure is shown in FIG. 4. The structure includes: a combined optical fiber branch 1045 from which the light beams exit, a group of optical shaping elements 105, a dichroic mirror 106, a group of optical shaping elements 107, and a light source 108. The optical shaping element group 105 is composed of a lens 1051 and a lens 1052, and the lens 1051 and the lens 1052 can be spherical lenses, aspheric lenses, fresnel lenses or diffractive optical elements, so as to shape the emitted light beams of the collective optical fiber branch 1045 and form light beams with high collimation. The fluorescence excited by the fluorescent ceramic chip 1001 is yellow fluorescence, the light source 108 emits a semiconductor laser of blue laser, the optical shaping element group 107 is composed of a diffusion sheet 1071, a cylindrical lens 1072 and a cylindrical lens 1073, and shaping of light beams emitted by the light source 108 is realized, wherein the diffusion sheet 1071 homogenizes light beams emitted by the light source 108 with gaussian energy distribution, the cylindrical lens 1071 compresses and shapes light in the fast axis direction of the light source 108, the cylindrical lens 1072 compresses and shapes light in the slow axis direction of the light source 108, and the light beams emitted by the light source 108 form light beams with high collimation and quasi-circular light spots in cross section after being shaped by the cylindrical lens 1071 and the cylindrical lens 1072. Dichroic mirror 106 is highly transparent to yellow light and highly reflective to blue light, and is disposed at an angle of 45 ° with the axes of summarizing fiber branch 1045 and light source 108, dichroic mirror 106 transmits the light beam emitted from summarizing fiber branch 1045, reflects the light beam emitted from light source 108, and the two are mixed to form white light. The wavelength of the light source 108 is 400nm-480nm, the thickness of the diffusion sheet 1071 is more than 0.5mm, and the haze is more than 70%.
In accordance with one or more embodiments, a laser illumination structure is shown in fig. 5. The structure includes: the fluorescent unit 1001 is fixed on a transparent material 1002, and the transparent material 1002 is fixed on a support frame 1003; the light source 101 focuses the outgoing light beam onto the fluorescence unit 1001 through the optical shaping element set 102 to excite fluorescence, and the fluorescence passes through another optical shaping element set 103 to be coupled into the optical fiber 1041. Further, the fluorescent unit 1001, the transparent material 1002 and the support 1003 together form the excitation assembly 100, the fluorescent unit 1001 is adhered to the transparent material 1002 through transparent glue, the support 1003 of the excitation assembly 100 is provided with a through hole 1004 and a groove 1005, the transparent material 1002 is fixed in the groove 1005 through the glue, and the light beam is incident on the fluorescent unit 1001 through the through hole 1004. The fluorescent unit 1001 is a fluorescent ceramic sheet, which may be YAG-Ce fluorescent ceramic, YAG-Ce fluorescent glass, YAG-Ce single crystal, etc., and other substances may be doped in the fluorescent powder body to adjust the emission spectrum, such as Cr3+Ion, Pr3+Ion, Gd3+Ions, and the like. The thickness of the fluorescent layer is more than or equal to 0.05 mm. The light source 101 is a semiconductor laser light source with a wavelength of 250nm-500 nm. The transparent material 1002 is a glass material, and may be quartz glass or sapphire glass. The supporting frame 1003 is made of metal, which may be aluminum, copper or steel, and plays a role in supporting and dissipating heat. The light beam emitted from the light source 101 is shaped by the optical shaping element set 102 and then focused to be incident on the fluorescent unit 1001 of the excitation assembly 100 to excite the fluorescent light. The optical shaping element group 102 is composed of a cylindrical lens 1021, a cylindrical lens 1022 and a focusing lens 1023, wherein the cylindrical lens 1021 shapes and compresses light in the fast axis direction of the light source 101, the cylindrical lens 1022 shapes and compresses light in the slow axis direction of the light source 101, the light beams with quasi-circular light spots are formed after the light shapes and compresses the light in the fast axis direction and the light in the slow axis direction of the light source 101, the light beams are focused by the focusing lens 1023 and enter a fluorescent unit 1001 of the excitation assembly 100, and the focusing lens 1023 may be a spherical lens, an aspherical lens, a fresnel lens or a diffractive optical element. The fluorescence excited on the fluorescence unit 1001 of the excitation assembly 100 is shaped by the optical shaping element set 103 to form a focused beam coupled into the branch 1041 of the all-in-one optical fiber. Where the optical shaping element group 103 is composed of a TIR lens 1033 and a lens 1032, the lens 1032 may be a spherical lens, an aspherical lens, a fresnel lens, or a diffractive optical element.
According to one or more embodiments, a laser illumination module comprises the aforementioned laser illumination structure.
According to one or more embodiments, a laser projection apparatus includes the aforementioned laser illumination structure.
It should be noted that while the foregoing has described the spirit and principles of the invention with reference to several specific embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in these aspects cannot be combined. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A laser illumination structure, comprising:
the fluorescent unit is fixed on a transparent material, and the transparent material is fixed on a support frame;
and the emergent light beam passes through the optical shaping element group and then is focused on the fluorescent unit to excite the fluorescence, and the fluorescence passes through the other optical shaping element group and then is focused and coupled into the optical fiber.
2. The laser illumination structure of claim 1, wherein the phosphor element is a phosphor plate.
3. The laser illumination structure as claimed in claim 1, wherein the light source is a laser light source with a wavelength between 250nm and 500 nm.
4. The laser illumination structure of claim 1, wherein the transparent material is a glass material.
5. The laser illumination structure of claim 1, wherein the support frame is metal.
6. The laser illumination structure of claim 1, wherein the set of optical shaping elements comprises at least one of a spherical lens, an aspherical lens, a TIR lens, a fresnel lens, or a diffractive optical element.
7. The laser illumination structure of claim 1, wherein the optical fiber is a branch of an all-in-one optical fiber.
8. The laser illumination structure of claim 7, wherein the multiple branches of the all-in-one fiber are coupled into fluorescence, and the multiple fluorescence beams are combined through the all-in-one fiber.
9. A laser illumination module comprising the laser illumination structure of claim 1.
10. A laser projection device comprising the laser illumination structure of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133595.3A CN111240026A (en) | 2020-02-28 | 2020-02-28 | Laser lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133595.3A CN111240026A (en) | 2020-02-28 | 2020-02-28 | Laser lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111240026A true CN111240026A (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010133595.3A Pending CN111240026A (en) | 2020-02-28 | 2020-02-28 | Laser lighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111240026A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918865A (en) * | 2015-12-28 | 2017-07-04 | 无锡视美乐激光显示科技有限公司 | Guiding device and its projector equipment of application |
| CN113946091A (en) * | 2020-07-15 | 2022-01-18 | 无锡视美乐激光显示科技有限公司 | Light source structure and projector |
-
2020
- 2020-02-28 CN CN202010133595.3A patent/CN111240026A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918865A (en) * | 2015-12-28 | 2017-07-04 | 无锡视美乐激光显示科技有限公司 | Guiding device and its projector equipment of application |
| CN113946091A (en) * | 2020-07-15 | 2022-01-18 | 无锡视美乐激光显示科技有限公司 | Light source structure and projector |
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Effective date of registration: 20240130 Address after: Floor 1, no.258, Pingyang Road, Minhang District, Shanghai, 201100 Applicant after: Shanghai Jiwei Technology Co.,Ltd. Country or region after: China Address before: 41-402 mengdan yuan, Lane 958, Qinghu Road, Xiayang street, Qingpu District, Shanghai, 201799 Applicant before: Shi Xiaoqing Country or region before: China |