CN1996138A - Portable projector and light source module thereof - Google Patents
Portable projector and light source module thereof Download PDFInfo
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- CN1996138A CN1996138A CN 200510048791 CN200510048791A CN1996138A CN 1996138 A CN1996138 A CN 1996138A CN 200510048791 CN200510048791 CN 200510048791 CN 200510048791 A CN200510048791 A CN 200510048791A CN 1996138 A CN1996138 A CN 1996138A
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Abstract
The portable projector and its light source module comprises the interconnected No. 1 emitting diode module, No. 2 emitting diode module, No. 1 collimating device, No. 2 collimating device, filter lens, lens set, prism module, digital microscope device and project lens unit. The No. 1 emitting diode module comprises a red light and a blue light emitting diodes and the No. 2 emitting diode module comprises a green light emitting diode. Light from No. 1 and No. 2 emitting diode modules can refract to the project lens unit after No. 1 and No. 2 light collimating, filter and lens gathering, refracting to digital microscope module through prism module, reflection and imaging by digital microscope device and prism module to project lens module.
Description
Technical field
The invention relates to a kind of projector, in particular to a kind of with portable projector and the light source module thereof of light emitting diode as light source.
Background technology
Along with projector is more and more frequent in the various application of daily life, the demand of the portable projector that weight is lighter, profile is smaller and more exquisite also progressively enlarges.For overall weight and the volume energy that makes portable projector further dwindles, there is use light emitting diode (LED) to occur recently gradually as the projector of light source.
For example U.S. US 6,882, and No. 331 patent promptly discloses a kind of " with the projector of dot matrix LEDs as light source " (Projector with array LED matrix light source); U.S. US6,644, No. 814 patent also discloses a kind of led lighting pattern DMD projector and optical system (LED-illumination-type DMD projector and optical system thereof) thereof.Yet these still exist some that problem to be solved is arranged with light emitting diode as the known technology of light source of projector.
At first, owing to must utilize Red just can reach the drop shadow effect of full color, so must in projector, dispose ruddiness (R), green glow (G), three kinds of light emitting diodes of blue light (B).Known technology normally is divided into three module separate configuration with these three kinds of light emitting diodes, so will occupy the inner space of many projectors, and be unfavorable for its miniaturization.
Fig. 1 shows that known technology is with the light source configuration schematic diagram of light emitting diode as light source of projector.As shown in Figure 1, known technology is provided with three light-emitting diode (LED) module 1R, 1G and 1B respectively, and so that the required R of projection, G, B three primary colors to be provided, and these light-emitting diode (LED) modules 1R, 1G and 1B respectively have the light emitting diode of a crystal grain usually.Simultaneously, known technology is at each light-emitting diode (LED) module, and three optical collimators (Collimator) 2R, 2G and 2B are set respectively, the light that is sent with alignment light emitting diode module 1R, 1G and 1B.Moreover known technology also need be provided with two optical filtering 3A and 3B at least, to filter respectively via the light behind optical collimator 2R, 2G and the 2B collimation.Therefore, under the configuration mode of known technology, occupy too many projector inner space with light emitting diode as the light supply apparatus of light source with making, and make the overall volume of projector and weight further not to reduce.
Secondly, because high-brightness LED chip is the form that adopts 1 crystal grain (Die) usually at present, and cuts into the specification of 1mm * 1mm, so light-emitting diode (LED) module 1R, the 1G of known technology and 1B are generally the light emitting diode that respectively has 1 crystal grain.Yet the light emitting diode of green glow is more bad with the efficiency ratio that electricity is converted to light, therefore, only is provided with at known technology under the configuration of green light LED of 1 crystal grain, will make that the brightness of light supply apparatus integral body of projector can't be satisfactory.
Summary of the invention
The object of the present invention is to provide a kind of portable projector and light source module thereof.
For achieving the above object, light source module provided by the invention (Illuminator Module), it can use in a projector, and this light source module comprises:
One first light-emitting diode (LED) module (LED Module) comprises:
One red light-emitting diode is in order to send ruddiness; And
One blue light-emitting diode is in order to send blue light; And
One second light-emitting diode (LED) module comprises a green light LED, in order to send green glow.
Described light source module further comprises:
One first optical collimator (Collimator) is connected with this first light-emitting diode (LED) module optics, in order to collimate ruddiness and the blue light that this first light-emitting diode (LED) module is sent; And
One second optical collimator is connected with this second light-emitting diode (LED) module optics, in order to collimate the green glow that this second light-emitting diode (LED) module is sent.
Described light source module further comprises:
One optical filtering (Filter) is connected with this first optical collimator and this second optical collimator optics, in order to filter via ruddiness, blue light and green glow behind this first optical collimator and this second optical collimator collimation.
Described light source module, wherein this optical filtering is a dichroic filters (Dichroic Filter).
Described light source module, wherein this projector is a portable projector.
Described light source module, wherein this red light-emitting diode is the light emitting diode of a crystal grain (Die).
Described light source module, wherein this blue light-emitting diode is the light emitting diode of a crystal grain.
Described light source module, wherein this green light LED is the light emitting diode of four crystal grain.
Projector provided by the invention comprises:
One light source module, it comprises one first light-emitting diode (LED) module and one second light-emitting diode (LED) module, and this first light-emitting diode (LED) module is in order to send ruddiness and blue light, and this second light-emitting diode (LED) module is in order to send green glow;
One first optical collimator is connected with this first light-emitting diode (LED) module optics, in order to collimate ruddiness and the blue light that this first light-emitting diode (LED) module is sent;
One second optical collimator is connected with this second light-emitting diode (LED) module optics, in order to collimate the green glow that this second light-emitting diode (LED) module is sent;
One optical filtering is connected with this first optical collimator and this second optical collimator optics;
One lens array (Lens Array) is connected with this optical filtering optics;
One prism module (Prism Module) is connected with this lens array optics;
One digital micro-mirror device (Digital Micromirror Device) is connected with this prism group optics; And
One projection lens group (Projection Lens Set) is connected with this digital micro-mirror device optics;
With this, ruddiness, blue light and green glow after this first optical collimator and this second optical collimator collimate is via this optical filtering filtration and via behind this lens array aggregate, light after will assembling via this prism module again is folded to this digital micro-mirror device, after this digital micro-mirror device reflection and video picture, by this prism module light is folded to this projection lens group again, and is focused on for imaging in an extraneous projecting plane.
Described projector, wherein this projector is a portable projector.
Described projector, wherein this optical filtering is a dichroic filters.
Described projector, wherein this prism module is reverse total internal reflection (Reversed TotalInternal Reflection, a RTIR) prism module.
Described projector, wherein this first light-emitting diode (LED) module comprises:
One red light-emitting diode is in order to send ruddiness; And
One blue light-emitting diode is in order to send blue light.
Described projector, wherein this second light-emitting diode (LED) module comprises a green light LED, in order to send green glow.
Described projector, wherein this red light-emitting diode is the light emitting diode of a crystal grain.
Described projector, wherein this blue light-emitting diode is the light emitting diode of a crystal grain.
Described projector, wherein this green light LED is the light emitting diode of four crystal grain.
With this, can reduce the configuration of a light-emitting diode (LED) module than known technology by enforcement of the present invention, and the further volume of reduced projection machine, and increase the overall brightness of projector.
Description of drawings
Fig. 1 is with the light source configuration schematic diagram of light emitting diode as light source of projector according to known technology.
Fig. 2 is the configuration schematic diagram according to light source module of the present invention.
Fig. 3 A is the synoptic diagram according to first light-emitting diode (LED) module of the present invention.
Fig. 3 B is the synoptic diagram according to second light-emitting diode (LED) module of the present invention.
Fig. 4 is the configuration schematic diagram according to projector of the present invention.
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and conjunction with figs. elaborates.
The present invention at first provides a kind of light source module based on light emitting diode, and it can use in portable projector.Below please refer to the configuration schematic diagram of Fig. 2 about light source module of the present invention.As shown in Figure 2, light source module 10 of the present invention has first light-emitting diode (LED) module 1, second light-emitting diode (LED) module 2, first optical collimator 3, second optical collimator 4 and optical filtering 5.Wherein, first light-emitting diode (LED) module 1 is in order to send ruddiness and blue light; Second light-emitting diode (LED) module 2 is in order to send green glow.
Therefore, by first light-emitting diode (LED) module 1 and second light-emitting diode (LED) module 2, the present invention can send and form required R, G, the B three primary colors of full color projection.So, the known technology that the present invention can be more shown in Figure 1 reduces the configuration of a light-emitting diode (LED) module, and the volume of the further reduced projection machine of energy.
As shown in Figure 2, first optical collimator 3 of the present invention is connected with first light-emitting diode (LED) module, 1 optics, is collimated (collimate) in order to the ruddiness and the blue light of wide-angle that first light-emitting diode (LED) module 1 is sent, to reach the effect of receiving light; And second optical collimator 4 is connected with second light-emitting diode (LED) module, 2 optics, in order to collimate the green glow that second light-emitting diode (LED) module 2 is sent.
Therefore, the present invention can reach effect with optical alignment by first optical collimator 3 and second optical collimator, 4 these two optical collimators.So, known technology that the present invention can be more shown in Figure 1 reduces the configuration of an optical collimator, and the volume of reduced projection machine further.
As shown in Figure 2, optical filtering of the present invention is connected with first optical collimator 3 and second optical collimator, 4 optics, in order to filter via ruddiness, blue light and green glow behind first optical collimator 3 and second optical collimator, 4 collimations, for further processing.
In one embodiment of this invention, optical filtering preferably is a dichroic filters (DichroicFilter).Therefore, the present invention can be reached the effect of optical filtering by optical filtering 5 these optical filterings.So, known technology that the present invention can be more shown in Figure 1 reduces the configuration of an optical filtering, and the volume of reduced projection machine further.
Then, please refer to Fig. 3 A and Fig. 3 B further specifying about first light-emitting diode (LED) module 1 of the present invention and second light-emitting diode (LED) module 2.
As shown in Figure 3A, first light-emitting diode (LED) module 1 of the present invention has a red light-emitting diode crystal grain 11, in order to send ruddiness; And a blue light-emitting diode crystal grain 12, in order to send blue light.So, the present invention is by red light-emitting diode crystal grain 11 and blue light-emitting diode crystal grain 12 are arranged in the same light-emitting diode (LED) module 1, can reduce its occupied space effectively, and then reduce the overall volume of the projector that uses light source module 10 of the present invention.
Shown in Fig. 3 B, second light-emitting diode (LED) module 2 of the present invention has four green light LED crystal grain 21,22,23 and 24, in order to send green glow.So, the present invention is by four green light LED crystal grain 21,22,23 and 24 being set simultaneously in same light-emitting diode (LED) module 2, can increase the light output quantity of green glow effectively, and then improve the output brightness of the projector that uses light source module 10 of the present invention.
In addition, the present invention provides a kind of projector that uses above-mentioned light supply apparatus 10 in addition.Please refer to Fig. 4 about with the configuration schematic diagram of light supply apparatus 10 as the projector 100 of light source.As shown in Figure 4, projector 100 of the present invention has first light-emitting diode (LED) module 1, second light-emitting diode (LED) module 2, first optical collimator 3, second optical collimator 4, optical filtering 5, lens array 6, prism module 7A and 7B, digital micro-mirror device 8 and the projection lens group 9 of optics connection each other.Wherein, prism module 7A and 7B preferably are reverse total internal reflection (Reversed Total Internal Reflection, RTIR) prism module.
Because above-mentioned lens array 6, prism module 7A and 7B, digital micro-mirror device 8 and projection lens group 9 is all known technology, therefore repeat no more.The below only simple declaration operating process of light in projector 100 of being sent by first light-emitting diode (LED) module 1 and second light-emitting diode (LED) module 2.
As shown in Figure 4, the ruddiness and the blue light that are sent by first light-emitting diode (LED) module 1, and the green glow that is sent by second light-emitting diode (LED) module 2, respectively via first optical collimator 3 and second optical collimator, 4 collimations, and via after optical filtering 5 filtrations, assemble via lens array 6, light after will assembling via prism module 7A and 7B again is folded to digital micro-mirror device 8, after digital micro-mirror device 8 reflections and video picture, by prism module 7A and 7B light is folded to projection lens group 9 again, and is focused on for imaging in an extraneous projecting plane.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this technician; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the content that claim defines.
Claims (17)
1. light source module, it can use in a projector, and this light source module comprises:
One first light-emitting diode (LED) module comprises:
One red light-emitting diode is in order to send ruddiness; And
One blue light-emitting diode is in order to send blue light; And
One second light-emitting diode (LED) module comprises a green light LED, in order to send green glow.
2. light source module as claimed in claim 1 is characterized in that, further comprises:
One first optical collimator is connected with this first light-emitting diode (LED) module optics, in order to collimate ruddiness and the blue light that this first light-emitting diode (LED) module is sent; And
One second optical collimator is connected with this second light-emitting diode (LED) module optics, in order to collimate the green glow that this second light-emitting diode (LED) module is sent.
3. light source module as claimed in claim 2 is characterized in that, further comprises:
One optical filtering is connected with this first optical collimator and this second optical collimator optics, in order to filter via ruddiness, blue light and green glow behind this first optical collimator and this second optical collimator collimation.
4. light source module as claimed in claim 3 is characterized in that, wherein this optical filtering is a dichroic filters.
5. light source module as claimed in claim 1 is characterized in that, wherein this projector is a portable projector.
6. light source module as claimed in claim 1 is characterized in that, wherein this red light-emitting diode is the light emitting diode of a crystal grain.
7. light source module as claimed in claim 1 is characterized in that, wherein this blue light-emitting diode is the light emitting diode of a crystal grain.
8. light source module as claimed in claim 1 is characterized in that, wherein this green light LED is the light emitting diode of four crystal grain.
9. projector comprises:
One light source module, it comprises one first light-emitting diode (LED) module and one second light-emitting diode (LED) module, and this first light-emitting diode (LED) module is in order to send ruddiness and blue light, and this second light-emitting diode (LED) module is in order to send green glow;
One first optical collimator is connected with this first light-emitting diode (LED) module optics, in order to collimate ruddiness and the blue light that this first light-emitting diode (LED) module is sent;
One second optical collimator is connected with this second light-emitting diode (LED) module optics, in order to collimate the green glow that this second light-emitting diode (LED) module is sent;
One optical filtering is connected with this first optical collimator and this second optical collimator optics;
One lens array is connected with this optical filtering optics;
One prism module is connected with this lens array optics;
One digital micro-mirror device is connected with this prism group optics; And
One projection lens group is connected with this digital micro-mirror device optics;
With this, ruddiness, blue light and green glow after this first optical collimator and this second optical collimator collimate is via this optical filtering filtration and via behind this lens array aggregate, light after will assembling via this prism module again is folded to this digital micro-mirror device, after this digital micro-mirror device reflection and video picture, by this prism module light is folded to this projection lens group again, and is focused on for imaging in an extraneous projecting plane.
10. projector as claimed in claim 9 is characterized in that, wherein this projector is a portable projector.
11. projector as claimed in claim 9 is characterized in that, wherein this optical filtering is a dichroic filters.
12. projector as claimed in claim 9 is characterized in that, wherein this prism module is a reverse total internal reflection prism module.
13. projector as claimed in claim 9 is characterized in that, wherein this first light-emitting diode (LED) module comprises:
One red light-emitting diode is in order to send ruddiness; And
One blue light-emitting diode is in order to send blue light.
14. projector as claimed in claim 13 is characterized in that, wherein this second light-emitting diode (LED) module comprises a green light LED, in order to send green glow.
15. projector as claimed in claim 13 is characterized in that, wherein this red light-emitting diode is the light emitting diode of a crystal grain.
16. projector as claimed in claim 13 is characterized in that, wherein this blue light-emitting diode is the light emitting diode of a crystal grain.
17. projector as claimed in claim 14 is characterized in that, wherein this green light LED is the light emitting diode of four crystal grain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510048791 CN1996138A (en) | 2005-12-29 | 2005-12-29 | Portable projector and light source module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510048791 CN1996138A (en) | 2005-12-29 | 2005-12-29 | Portable projector and light source module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1996138A true CN1996138A (en) | 2007-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510048791 Pending CN1996138A (en) | 2005-12-29 | 2005-12-29 | Portable projector and light source module thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1996138A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359158B (en) * | 2007-08-01 | 2010-09-01 | 台达电子工业股份有限公司 | Projection device |
| CN106444254A (en) * | 2016-12-22 | 2017-02-22 | 鲜善洪 | Projection device and system |
-
2005
- 2005-12-29 CN CN 200510048791 patent/CN1996138A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359158B (en) * | 2007-08-01 | 2010-09-01 | 台达电子工业股份有限公司 | Projection device |
| CN106444254A (en) * | 2016-12-22 | 2017-02-22 | 鲜善洪 | Projection device and system |
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