CN104238245A - Light source of laser projector - Google Patents
Light source of laser projector Download PDFInfo
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- CN104238245A CN104238245A CN201310222280.6A CN201310222280A CN104238245A CN 104238245 A CN104238245 A CN 104238245A CN 201310222280 A CN201310222280 A CN 201310222280A CN 104238245 A CN104238245 A CN 104238245A
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- light beam
- fluorescent material
- material layer
- light source
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Abstract
The invention discloses a light source of a laser projector. The light source comprises a laser light source assembly, a fluorescent material assembly, and a heat radiation assembly. To be specific, the laser light source assembly includes laser diodes and collimating lenses; and the collimating lenses are arranged at one sides of the laser diodes and are used for receiving divergent laser light beams from the laser diodes and converting the light beams into parallel laser beams. The fluorescent material assembly includes a fluorescent material layer and a condensing lens; and the condensing lens arranged at one side of the fluorescent material layer receives the parallel laser light beams and a divergent visible light beam of the fluorescent material layer respectively and converts the divergent visible light beam into a parallel visible light beam. The heat radiation assembly includes a heat conducting plate and a cooling fin; the fluorescent material layer is contacted to the heat conducting plate; and the heat conducting plate is contacted to the cooling fin or is contacted to the cooling fin by a thermal conductive binder. The divergent laser light beams from the laser diodes are converted into parallel visible light beams under the joint effect of the collimating lenses and the condensing lens, thereby forming a light source of a projector; and the heat of the fluorescent material layer can be dissipated by the cooling fin, thereby ensuring the normal working of the fluorescent material layer.
Description
Technical field
The present invention relates to a kind of light source, particularly a kind of light source of laser projection.
Background technology
The light source used in current projector is UHP (Ultra High Pressure, ultrahigh pressure mercury lamp) bulb mainly, and its brightness is very high, but the life-span only has 3000 hours, and changes the expensive of lamp, so can not meet the demand of Long-Time Service.
Along with laser diode develops rapidly, laser diode is adopted to replace UHP bulb to be an important technological development direction, but in LASER Light Source, the power of laser diode and the efficiency of fluorescent material layer are the Main Bottlenecks of high power, high brightness laser light source, and wherein the heat radiation of laser diode heat radiation and fluorescent material layer is a technical barrier.In order to overcome this difficult problem, must increase the quantity of fan, or increase the power of fan, this is unfavorable for the overall volume controlling projector, and the service efficiency of fan is not high yet.
Power with this exciting light is larger, make the temperature of fluorescent material layer higher, this reduces the launching efficiency of fluorescent material layer, thus cause fluorescent material layer be stimulated export visible light beam power mentioning to a certain degree along with excitation light power, fluorescent material layer generation cancellation, causes the launching efficiency of fluorescent material layer to decline.
Summary of the invention
It can be effectively fluorescent material layer and laser diode heat radiation that object of the present invention is just to provide one, improves the light source of the laser projection of the launching efficiency of fluorescent material layer.
For solving the problem, the invention provides a kind of light source of laser projection, comprising:
Laser light source module, comprises laser diode and collimation lens, described collimation lens be arranged at described laser diode side and receive described laser diode export divergencing laser light beam make it become parallel laser light beam;
Fluorescent material assembly, comprise fluorescent material layer and collector lens, described collector lens be arranged at described fluorescent material layer side and receive respectively described parallel laser light beam make its become convergent laser light beam with reception described fluorescent material layer made it become parallel visible light beam by the visible light beam of dispersing that described convergent laser beam excitation exports;
Radiating subassembly, comprises heat-conducting plate and heat radiator, and described fluorescent material layer is attached on described heat-conducting plate, and described heat-conducting plate is attached on described heat radiator.
Preferably, described radiating subassembly also comprises slew gear, and described heat radiator is connected on described slew gear.
Preferably, described radiating subassembly also comprises housing, and described heat radiator to be built in described housing and to rotate around described slew gear; Described slew gear, heat radiator and housing form a fan structure.
Preferably, described fluorescent material layer to be along the circumferential direction arranged on described heat-conducting plate and to rotate with described slew gear, and described collector lens is just to the rotary motion trace of described fluorescent material layer.
Preferably, described light source also comprises reflection subassembly, described reflection subassembly comprises dichroic beam splitter, on the direction of propagation that described dichroic beam splitter is arranged at described parallel laser light beam or on the direction of propagation of described parallel visible light beam and the direction of propagation of the direction of propagation or described parallel visible light beam that change described parallel laser light beam makes the direction of propagation of described parallel laser light beam perpendicular to the direction of propagation of described parallel visible light beam.
Preferably, described reflection subassembly also comprises completely reflecting mirror, on the direction of propagation that described completely reflecting mirror is arranged at described parallel laser light beam and the direction of propagation changing described parallel laser light beam makes the direction of propagation of described parallel laser light beam be parallel to the direction of propagation of described parallel visible light beam.
Preferably, described heat-conducting plate is attached on described heat radiator by Heat Conduction Material.
Preferably, the surface of contact of described fluorescent material layer and described Heat Conduction Material is coated with reflectance coating.
The beneficial effect of this technical scheme is adopted to be, the present invention by the divergencing laser beam emissions of laser diode out, through the acting in conjunction of collimation lens, collector lens, assemble on fluorescent material layer surface, what fluorescent material layer was excited disperses visible light beam by the parallel visible light beam of row formation after collector lens collimation, can be used as the light source of projector.
Fluorescent material layer is attached to the surface of heat-conducting plate, and heat-conducting plate is close on a heat sink; The heat of fluorescent material layer is distributed, thus ensures the normal work of fluorescent material layer.
The present invention also has other beneficial effect: it is distinguished and admirable to laser diode heat radiation that said fans structure sends, thus ensure the normal work of laser diode.
Accompanying drawing explanation
Fig. 1 is the structural representation of the light source embodiment 1 of a kind of laser projection of the present invention;
Fig. 2 is the structural representation of radiating subassembly in the light source embodiment 2 of a kind of laser projection of the present invention;
Fig. 3 is the structural representation figure of the light source embodiment 3 of a kind of laser projection of the present invention;
Fig. 4 is the structural representation of the light source embodiment 4 of a kind of laser projection of the present invention;
Fig. 5 is the structural representation of the light source embodiment 5 of a kind of laser projection of the present invention.
Wherein, parallel visible light beam 41. heat-conducting plate 42. heat radiator 43. air-flow 44. slew gear 45. housing of 11. laser diode 12. collimation lens 13. parallel laser light beam 21. dichroic beam splitter 22. completely reflecting mirror 31. lens 32. lens 33. fluorescent material layer 34..
Embodiment
Specific embodiments of the invention are described in detail below in conjunction with accompanying drawing.
Embodiment 1
See Fig. 1, as shown in legend wherein, a kind of light source of laser projection, comprising:
One laser light source module, comprises three laser diodes 11 and three collimation lenses 12, collimation lens 12 be arranged at laser diode 11 side and receive laser diode 11 export divergencing laser light beam make it become parallel laser light beam 13;
One fluorescent material assembly, comprise fluorescent material layer 33 and two collector lenses 31,32, collector lens 31,32 are arranged at the side of fluorescent material layer 33 and receive parallel laser light beam 13 respectively and make it become convergent laser light beam and receive fluorescent material layer 33 to be made it become parallel visible light beam 34 by the visible light beam of dispersing that above-mentioned convergent laser beam excitation exports;
One reflection subassembly, comprise a dichroic beam splitter 21, on the direction of propagation that dichroic beam splitter 21 is arranged at parallel visible light beam 34 and the direction of propagation changing parallel visible light beam 34 makes the direction of propagation of parallel laser light beam 13 perpendicular to the direction of propagation of parallel visible light beam 34.
One radiating subassembly, comprise heat-conducting plate 41 and a heat radiator 42, fluorescent material layer 33 is attached on heat-conducting plate 41, and heat-conducting plate 41 is attached on heat radiator 42.
The divergencing laser beam emissions of laser diode 11 out, parallel laser light beam 13 is become through collimation lens 12, parallel laser light beam 13 is through collector lens 31, the acting in conjunction of 32 becomes convergent laser light beam, the surface of fluorescent material layer 33 is inspired disperses visible light beam, by collector lens 31, after 32 collimations, row forms parallel visible light beam 34, parallel visible light beam 34 changes the direction of propagation under the reflection of dichroic beam splitter 21, thus avoid the position of laser diode 11, can be used as the light source of projector.
Fluorescent material layer 33 is attached to the surface of heat-conducting plate 41, and heat-conducting plate 41 is close on a heat sink; The heat of fluorescent material layer 33 is distributed, thus ensures the normal work of fluorescent material layer 33, between heat radiator 42 and laser diode 11, form the air-flow 43 of flowing simultaneously.
Embodiment 2
See Fig. 2, as shown in legend wherein, all the other are identical in described embodiment 1, and difference is, above-mentioned radiating subassembly also comprises single-revolution mechanism 44 and a housing 45, and heat radiator 42 is built in housing 45 and wraparound rotation mechanism 44 rotates; Slew gear 44, heat radiator 42 and housing 45 form a fan structure.
Fluorescent material layer 33 and heat radiator 42 are arranged on slew gear 44, heat radiator 42, slew gear 44 and housing 45 form fan, transferred the radiating effect improving fluorescent material layer 33 during work by high-speed rotary, the air-flow 43 simultaneously utilizing revolution to produce carrys out cooling laser diode 11.
Embodiment 3
See Fig. 3, as shown in legend wherein, all the other are identical in described embodiment 1, difference is, on the direction of propagation that dichroic beam splitter 21 is arranged at parallel laser light beam 13 and the direction of propagation changing parallel laser light beam 13 makes the direction of propagation of parallel laser light beam 13 perpendicular to the direction of propagation of parallel visible light beam 34.
Embodiment 4
See Fig. 4, as shown in legend wherein, all the other are identical in described embodiment 3, difference is, above-mentioned reflection subassembly also comprises a completely reflecting mirror 22, on the direction of propagation that completely reflecting mirror 22 is arranged at parallel laser light beam 13 and the direction of propagation changing parallel laser light beam 13 makes the direction of propagation of parallel laser light beam 13 be parallel to the direction of propagation of parallel visible light beam 34.
Embodiment 5
See Fig. 5, as shown in legend wherein, all the other are identical in described enforcement 1, difference is, difference is, above-mentioned reflection subassembly also comprises a completely reflecting mirror 22, on the direction of propagation that completely reflecting mirror 22 is arranged at parallel laser light beam 13 and the direction of propagation changing parallel laser light beam 13 makes the direction of propagation of parallel laser light beam 13 be parallel to the direction of propagation of parallel visible light beam 34.
Embodiment 6
All the other are arbitrary identical in described enforcement 1-5, and difference is, above-mentioned fluorescent material layer to be along the circumferential direction arranged on above-mentioned heat-conducting plate and to rotate with above-mentioned slew gear, and above-mentioned collector lens is just to the rotary motion trace of described fluorescent material layer.
Embodiment 7
All the other are identical in described enforcement 6, and difference is, above-mentioned heat-conducting plate is attached on above-mentioned heat radiator by Heat Conduction Material.
Embodiment 8
All the other are identical in described enforcement 7, and difference is, above-mentioned fluorescent material layer is coated with reflectance coating relative to the side of described collector lens.
The beneficial effect of this technical scheme is adopted to be, the present invention by the divergencing laser beam emissions of laser diode out, through the acting in conjunction of collimation lens, collector lens, assemble on fluorescent material layer surface, what fluorescent material layer was excited disperses visible light beam by the parallel visible light beam of row formation after collector lens collimation, can be used as the light source of projector.
Fluorescent material layer is attached to the surface of heat-conducting plate, and heat-conducting plate is close on a heat sink; The heat of fluorescent material layer is distributed, thus ensures the normal work of fluorescent material layer.
The present invention also has other beneficial effect: it is distinguished and admirable to laser diode heat radiation that said fans structure sends, thus ensure the normal work of laser diode.
The above is only the preferred embodiment of the present invention, it should be pointed out that without departing from the concept of the premise of the invention, and can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. a light source for laser projection, is characterized in that, comprising:
Laser light source module, comprises laser diode and collimation lens, described collimation lens be arranged at described laser diode side and receive described laser diode export divergencing laser light beam make it become parallel laser light beam;
Fluorescent material assembly, comprise fluorescent material layer and collector lens, described collector lens be arranged at described fluorescent material layer side and receive respectively described parallel laser light beam make its become convergent laser light beam with reception described fluorescent material layer made it become parallel visible light beam by the visible light beam of dispersing that described convergent laser beam excitation exports;
Radiating subassembly, comprises heat-conducting plate and heat radiator, and described fluorescent material layer is attached on described heat-conducting plate, and described heat-conducting plate is attached on described heat radiator.
2. light source according to claim 1, is characterized in that, described radiating subassembly also comprises slew gear, and described heat radiator is connected on described slew gear.
3. light source according to claim 2, is characterized in that, described radiating subassembly also comprises housing, and described heat radiator to be built in described housing and to rotate around described slew gear; Described slew gear, heat radiator and housing form a fan structure.
4. light source according to claim 3, is characterized in that, described fluorescent material layer to be along the circumferential direction arranged on described heat-conducting plate and to rotate with described slew gear, and described collector lens is just to the rotary motion trace of described fluorescent material layer.
5. according to the arbitrary described light source of claim 1-4, it is characterized in that, described light source also comprises reflection subassembly, described reflection subassembly comprises dichroic beam splitter, on the direction of propagation that described dichroic beam splitter is arranged at described parallel laser light beam or on the direction of propagation of described parallel visible light beam and the direction of propagation of the direction of propagation or described parallel visible light beam that change described parallel laser light beam makes the direction of propagation of described parallel laser light beam perpendicular to the direction of propagation of described parallel visible light beam.
6. light source according to claim 5, it is characterized in that, described reflection subassembly also comprises completely reflecting mirror, on the direction of propagation that described completely reflecting mirror is arranged at described parallel laser light beam and the direction of propagation changing described parallel laser light beam makes the direction of propagation of described parallel laser light beam be parallel to the direction of propagation of described parallel visible light beam.
7. light source according to claim 6, is characterized in that, described heat-conducting plate is attached on described heat radiator by Heat Conduction Material.
8. light source according to claim 7, is characterized in that, the surface of contact of described fluorescent material layer and described Heat Conduction Material is coated with reflectance coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310222280.6A CN104238245A (en) | 2013-06-06 | 2013-06-06 | Light source of laser projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310222280.6A CN104238245A (en) | 2013-06-06 | 2013-06-06 | Light source of laser projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104238245A true CN104238245A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310222280.6A Pending CN104238245A (en) | 2013-06-06 | 2013-06-06 | Light source of laser projector |
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| CN (1) | CN104238245A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286663A (en) * | 2017-09-06 | 2018-07-17 | 绵阳聚强极风科技有限公司 | A kind of LASER Excited Fluorescence lighting device |
| CN109004505A (en) * | 2018-08-29 | 2018-12-14 | 佛山市辉康光电技术有限公司 | A kind of laser pump (ing) fluorescent light source device |
| CN109557750A (en) * | 2017-09-26 | 2019-04-02 | 中强光电股份有限公司 | Lighting system and the projection arrangement for using lighting system |
Citations (7)
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| JP2000039673A (en) * | 1998-07-23 | 2000-02-08 | Nec Corp | Video display device |
| JP2001100315A (en) * | 1999-09-28 | 2001-04-13 | Nec Viewtechnology Ltd | Video projection device |
| US20020003704A1 (en) * | 2000-05-25 | 2002-01-10 | Hideki Ohmae | Color wheel assembly and color sequential display device using the same, color wheel unit and color sequential display device using the same, and color sequential display device |
| US20080049345A1 (en) * | 2006-08-28 | 2008-02-28 | Minebea Co., Ltd. | Color wheel unit |
| CN101359076A (en) * | 2007-07-31 | 2009-02-04 | 鸿富锦精密工业（深圳）有限公司 | Color wheel |
| JP2012013897A (en) * | 2010-06-30 | 2012-01-19 | Jvc Kenwood Corp | Light source unit and projection-type display apparatus |
| CN203324637U (en) * | 2013-06-06 | 2013-12-04 | 苏州智能泰克有限公司 | Light source for laser projector |
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2013
- 2013-06-06 CN CN201310222280.6A patent/CN104238245A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000039673A (en) * | 1998-07-23 | 2000-02-08 | Nec Corp | Video display device |
| JP2001100315A (en) * | 1999-09-28 | 2001-04-13 | Nec Viewtechnology Ltd | Video projection device |
| US20020003704A1 (en) * | 2000-05-25 | 2002-01-10 | Hideki Ohmae | Color wheel assembly and color sequential display device using the same, color wheel unit and color sequential display device using the same, and color sequential display device |
| US20080049345A1 (en) * | 2006-08-28 | 2008-02-28 | Minebea Co., Ltd. | Color wheel unit |
| CN101359076A (en) * | 2007-07-31 | 2009-02-04 | 鸿富锦精密工业（深圳）有限公司 | Color wheel |
| JP2012013897A (en) * | 2010-06-30 | 2012-01-19 | Jvc Kenwood Corp | Light source unit and projection-type display apparatus |
| CN203324637U (en) * | 2013-06-06 | 2013-12-04 | 苏州智能泰克有限公司 | Light source for laser projector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286663A (en) * | 2017-09-06 | 2018-07-17 | 绵阳聚强极风科技有限公司 | A kind of LASER Excited Fluorescence lighting device |
| CN109557750A (en) * | 2017-09-26 | 2019-04-02 | 中强光电股份有限公司 | Lighting system and the projection arrangement for using lighting system |
| CN109557750B (en) * | 2017-09-26 | 2021-06-15 | 中强光电股份有限公司 | Illumination system and projection apparatus using the same |
| CN109004505A (en) * | 2018-08-29 | 2018-12-14 | 佛山市辉康光电技术有限公司 | A kind of laser pump (ing) fluorescent light source device |
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Application publication date: 20141224 |