CN102073137A - LED (Light Emitting Diode) illuminating device and projector - Google Patents
LED (Light Emitting Diode) illuminating device and projector Download PDFInfo
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- CN102073137A CN102073137A CN2010105623509A CN201010562350A CN102073137A CN 102073137 A CN102073137 A CN 102073137A CN 2010105623509 A CN2010105623509 A CN 2010105623509A CN 201010562350 A CN201010562350 A CN 201010562350A CN 102073137 A CN102073137 A CN 102073137A
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Abstract
The invention relates to the field of projectors, and mainly relates to an LED (Light Emitting Diode) illuminating device of a projector and a projector with the illuminating device. The illuminating device comprises two or more than two LED lighting source modules, and a switch module which is used for leading out light beam of any LED lighting source module. In the invention, a plurality of groups of LED lighting source modules are arranged, if certain LED lighting source module at work is damaged and can not work normally, the switch module can introduce the light beam of other LED lighting source modules, namely the damaged LED lighting source module can be replaced by other perfect LED lighting source modules to work. Therefore in the invention, compared with the prior art, higher reliability is provided, the occurrence of the phenomenon of blank screen of the projector or color defection of pictures can be prevented effectively.
Description
Technical field
The present invention relates to field of projector, relate generally to a kind of LED lighting device of projector and have the projector of lighting device.
Background technology
In recent years,, projector is also had higher requirement, concentrate on brightness lifting, environmental protection, price reduction, the more high aspect of reliability, and the appearance of LED has adapted to this trend preferably along with the raising of actual demand.Since LED have be quick on the draw, long service life, color saturation is higher, volume is little, do not contain the advantage of comprehensively leading conventional light source such as Toxic matter, be widely used in fields such as backlight, demonstration, illumination, so led light source has also become one of light source of projector solution of greatest concern of future generation.
At present a lot of as the projector of light source with LED, high-brightness LED projector only adopts each a slice of monochromatic LED mostly, and in actual applications, if single led damage then certainly leads to the luminance loss, picture lacks look, causes projector normally to use.Therefore also need to design the higher LED illuminator of a kind of reliability.
Therefore, provide a kind of reliability higher LED lighting device, become the technical issues that need to address.
Summary of the invention
The technical matters that the present invention solves provides the higher LED lighting device of a kind of reliability.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of LED lighting device, it comprises: two or more led light source modules, and the switching module that is used to draw the light beam of any led light source module.The led light source module is meant by multiple color LED being closed light and forms the light sources of exporting white light.For example pass through the white LED light source module of three-primary color LED synthesize white light.
As one of improving: described switching module comprises catoptron and is used to drive the driving mechanism of catoptron.
As two of improvement: this LED lighting device comprises and is positioned on the same optical axis and two led light source modules that the emergent light direction is opposite, and the catoptron of described switching module is arranged on this optical axis and between these two light source modules.
As three of improvement: this LED lighting device also comprises and is used for collector lens group that the light beam that described switching module is drawn is assembled.
As four of improvement: each led light source module comprises and is used to provide three groups of primary-color LED modules of approximate directional light and is used for dichroic mirror group with the light compositing white light of each LED module.Three groups of primary-color LED modules are meant ruddiness, blue light and green light LED module.These three kinds of light can obtain white light through the dichroic mirror combination.
As five of improvement: described dichroic mirror comprises and is used for that two groups of primary-color LED modules are wherein closed first dichroic mirror of light and is used for second dichroic mirror with the light compositing white light that closes light and the 3rd group of primary-color LED module of these two groups of primary-color LED modules.
As six of improvement: each is organized the primary-color LED module and comprises corresponding primary-color LED and collimating mirror group.The collimating mirror group that each primary-color LED module is adopted can adopt identical mirror group, also can be different mirror groups, and can adopt aspheric mirror better to satisfy the design requirement of system.
As seven of improvement: this LED lighting device also comprises and is respectively applied for some adjustment lens of the emergent light of each led light source module being adjusted compression.
As eight of improvement: its pairing led light source module outgoing direction of light of the optical axis deviation of described adjustment lens.
The present invention also provides a kind of projector that adopts above-mentioned LED lighting device in addition.
Compared with prior art, beneficial effect is: the present invention is provided with many group led light source modules, if the impaired cisco unity malfunction of certain led light source module of working, then switching module can introduce the light beam of other led light source modules, promptly can substitute impaired led light source module work with other intact led light source modules.Therefore the present invention has the reliability higher than prior art, can prevent effectively that projector's blank screen or picture lack the generation of look phenomenon.
Description of drawings
Fig. 1 is the structural representation of embodiment one;
Fig. 2 is the structural representation of embodiment two.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Embodiment one
The LED lighting device of present embodiment comprises: two led light source modules 10, switching module 20 and collector lens groups 30.
These two led light source modules, 10 outgoing directions of light are opposite, and are positioned on the same optical axis.This switching module 20 comprises catoptron 21 and is used to drive the driving mechanism of catoptron (figure does not show).This catoptron is positioned on this optical axis, imports to the saturating module of optically focused by the white light beam with selected led light source module 10.If selected led light source module 10 damages, the driving mechanism that switches module then switches to catoptron another led light source module 10 directions, imports to the saturating module of optically focused by the white light beam that reflects another led light source module 10.The drives structure of switching module can be switched module and rotates around the axle of vertical drawing by driving, or switches module and rotate around the optical axis of optically focused module and realize switching by driving, and also can realize the switching of catoptron by other mode of motion.
30 pairs of light beams of this collector lens group are assembled, and are about to beam convergence that selected led light source module 10 sent in subsequent optical system entry place, to obtain the higher system illumination efficiency.The subsequent optical system can be beam homogenization device devices such as (figure do not show).
Each led light source module 10 comprises: green, blueness and red LED module 11,12,13, and two dichroic mirrors 14,15 that are used for synthesize white light.Wherein, green light LED module 11 is made of the led chip and the collimating mirror group of glow green, in order to produce approximately parallel green light LED light beam; Blue-ray LED module 12 is made of the led chip and the collimating mirror group of the coloured light that turns blue, in order to produce approximately parallel blue-ray LED light beam; Red-light LED module 13 is made of the led chip and the collimating mirror group of burn red, in order to produce approximately parallel red-light LED light beam.In this embodiment, first dichroic mirror 14 transmit blue, reflect green light, can be with blue-ray LED light beam and the synthetic bluish-green light beam of green light LED light beam, and second dichroic mirror 15 reflect red, transmit blue and green glow can close red-light LED light beam and bluish-green light beam light and obtain white light beam.
In the present embodiment, also adopt the white light beam of adjusting lens 40 each led light source module 10 outgoing to compress adjustment, make light beam better meet the needs of back design of Optical System, also can not adopt this to adjust lens 40, as long as can meet design requirement.In addition, collimation module and the saturating module of optically focused have adopted non-spherical lens respectively, can effectively reduce eyeglass quantity, with the minimizing energy loss, and simple in structure, easy to assembly.
Embodiment two
Present embodiment with the difference of the foregoing description one is: the light mode of closing of (1) led light source module is different; (2) the unjustified lens of the light of led light source module outgoing promptly shine directly on the catoptron that switches module.
The intersection mirror that the led light source module 10 ' of present embodiment adopts closes the light mode, and specifically: the optical axis of green light LED module 11 ' is a primary optical axis, and the optical axis of red-light LED module 13 ' and blue-ray LED module 12 ' is all vertical with primary optical axis; Two dichroic mirrors 14 ', 15 ' are arranged in a crossed manner on primary optical axis, to primary optical axis, also allow green glow to penetrate simultaneously ruddiness and blu-ray reflection, thereby can synthesize white light with ruddiness, blue light and green glow.Wherein dichroic mirror 14 ' reflect red, transmit green, blue light, dichroic mirror 15 ' reflect blue, transmit green, ruddiness.
In above-mentioned two embodiment, the collimating mirror group that blue-ray LED module, green light LED module, red-light LED module are adopted can be identical mirror group, also can adopt different mirror groups, with the design requirement of the system of better meeting.By changing two different looks to mirror, the position of blue-ray LED module, green light LED module, red-light LED module can be changed.
In addition, the present invention can also adopt other to close the led light source of light mode, change the position of adjusting lens, the collector lens group that adopts different switching modular structures or employing different materials structure, but as long as main frame is constant, in allowed band, the details of technical scheme is adjusted or conversion, still belonged within the scope of the present invention.
Claims (10)
1. LED lighting device is characterized in that comprising: two or more led light source modules, and the switching module that is used to draw the light beam of any led light source module.
2. LED lighting device according to claim 1 is characterized in that: described switching module comprises catoptron and is used to drive the driving mechanism of catoptron.
3. LED lighting device according to claim 1, it is characterized in that: this LED lighting device comprises and is positioned on the same optical axis and two led light source modules that the emergent light direction is opposite, and the catoptron of described switching module is arranged on this optical axis and between these two light source modules.
4. according to claim 2 or 3 arbitrary described LED lighting devices, it is characterized in that this LED lighting device also comprises: be used for collector lens group that the light beam that described switching module is drawn is assembled.
5. according to the arbitrary described LED lighting device of claim 1 to 3, it is characterized in that each led light source module comprises: be used to provide three groups of primary-color LED modules of approximate directional light and be used for dichroic mirror group with the light compositing white light of each primary-color LED module.
6. LED lighting device according to claim 5, it is characterized in that, described dichroic mirror comprises: be used for that two groups of primary-color LED modules are wherein closed first dichroic mirror of light and be used for second dichroic mirror with the light compositing white light that closes light and the 3rd group of primary-color LED module of these two groups of primary-color LED modules.
7. LED lighting device according to claim 6 is characterized in that: each is organized the primary-color LED module and comprises corresponding primary-color LED and collimating mirror group.
8. according to the arbitrary described LED lighting device of claim 1 to 3, it is characterized in that: this LED lighting device also comprises and is respectively applied for some adjustment lens of the emergent light of each led light source module being adjusted compression.
9. LED lighting device according to claim 8 is characterized in that: the direction of its pairing led light source module outgoing beam of the optical axis deviation of described adjustment lens.
10. a projector is characterized in that comprising the arbitrary described LED lighting device of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105623509A CN102073137A (en) | 2010-11-29 | 2010-11-29 | LED (Light Emitting Diode) illuminating device and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105623509A CN102073137A (en) | 2010-11-29 | 2010-11-29 | LED (Light Emitting Diode) illuminating device and projector |
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| Publication Number | Publication Date |
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| CN102073137A true CN102073137A (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105623509A Pending CN102073137A (en) | 2010-11-29 | 2010-11-29 | LED (Light Emitting Diode) illuminating device and projector |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53119949U (en) * | 1977-03-01 | 1978-09-25 | ||
| CN2670972Y (en) * | 2004-01-06 | 2005-01-12 | 广东威创日新电子有限公司 | Multi-light source illuminator of projector |
| CN1624570A (en) * | 2003-12-03 | 2005-06-08 | 精工爱普生株式会社 | Projector |
| CN100367078C (en) * | 2005-03-02 | 2008-02-06 | 中强光电股份有限公司 | Optical projection device |
| CN101319756A (en) * | 2007-06-07 | 2008-12-10 | 台达电子工业股份有限公司 | Switchable illumination system |
| CN201247375Y (en) * | 2008-06-26 | 2009-05-27 | 杭州三花科特光电有限公司 | Multi-light-source lighting device for projector |
| CN101852387A (en) * | 2010-04-23 | 2010-10-06 | 广东威创视讯科技股份有限公司 | Illuminating light path and LED light machine illuminating system with same |
-
2010
- 2010-11-29 CN CN2010105623509A patent/CN102073137A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53119949U (en) * | 1977-03-01 | 1978-09-25 | ||
| CN1624570A (en) * | 2003-12-03 | 2005-06-08 | 精工爱普生株式会社 | Projector |
| CN2670972Y (en) * | 2004-01-06 | 2005-01-12 | 广东威创日新电子有限公司 | Multi-light source illuminator of projector |
| CN100367078C (en) * | 2005-03-02 | 2008-02-06 | 中强光电股份有限公司 | Optical projection device |
| CN101319756A (en) * | 2007-06-07 | 2008-12-10 | 台达电子工业股份有限公司 | Switchable illumination system |
| CN201247375Y (en) * | 2008-06-26 | 2009-05-27 | 杭州三花科特光电有限公司 | Multi-light-source lighting device for projector |
| CN101852387A (en) * | 2010-04-23 | 2010-10-06 | 广东威创视讯科技股份有限公司 | Illuminating light path and LED light machine illuminating system with same |
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Application publication date: 20110525 |