CN1892285A - Light-source module and optical projection system - Google Patents
Light-source module and optical projection system Download PDFInfo
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- CN1892285A CN1892285A CN 200510080719 CN200510080719A CN1892285A CN 1892285 A CN1892285 A CN 1892285A CN 200510080719 CN200510080719 CN 200510080719 CN 200510080719 A CN200510080719 A CN 200510080719A CN 1892285 A CN1892285 A CN 1892285A
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- light source
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Abstract
A light source module includes reflector, light source, transparency cover, luminescent material layer and optical lens. wherein light source set in reflector and light source used for sending light including white light, transparency cover and reflector cladding light source, luminescent material set on transparency cover, light source transmitted light used for exciting luminescent material layer to send red light, optical lens set on light source optical path, and optical lens and light source respectively located transparency cover both sides, based above-mentioned said invention capable of sending rather strong red light. Furthermore said invention also discloses an optical projection system.
Description
Technical field
The present invention relates to a kind of optical system, especially relate to a kind of light source module and optical projection system.
Background technology
In recent years, liquid crystal (liquid crystal) display technique is widely used in the daily life gradually, as the LCD of LCD TV, notebook computer (notebook) or desk-top computer (liquid crystal display, LCD), and liquid crystal projector etc.Wherein, liquid crystal projector is that large scale shows one of indispensable technology.Because the employed display panels of liquid crystal projector must be considered the image resolution ratio (resolution) that institute's projection goes out, therefore can adopt mostly to have quite high-resolution liquid crystal panel.
The liquid crystal panel that tradition is applied to liquid crystal projector is the liquid crystal display cells of a kind of framework on glass substrate or silicon base (silicon substrate).General liquid crystal panel is with thin film transistor (TFT) (thinfilm transistor, TFT) or metal oxide semiconductor transistor (metal-oxide-semiconductor transistor, MOS transistor) as active member, and these active members can drive liquid crystal by the pixel electrode (pixel electrode) that is electrically connected with it, to reach the purpose of demonstration.Since liquid crystal panel have volume little with characteristics such as high resolving power, so liquid crystal panel extremely meets liquid crystal projector demand of reduction day by day on volume.Certainly, the design quality of optical projection system has also determined the usefulness of liquid crystal projector.
With the optical projection system in the known reflecting liquid crystal projector is example, this kind optical projection system adopts high-pressure sodium lamp (high-pressured mercury lamp) as light source usually, yet the optical characteristics of high-pressure sodium lamp is the intensity of the intensity of green glow greater than ruddiness.Therefore, when doing white balance (whitebalance), just must downgrade corresponding to the driving voltage of the display panels of green glow, to reach required white.Yet general control voltage has its scope, if reach white balance and when reducing driving voltage corresponding to the display panels of green glow, the adjustment of GTG will be restricted.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of light source module, and it can send the ruddiness of higher-strength.
In addition, another object of the present invention just provides a kind of optical projection system, and it has higher brightness.
Based on above-mentioned purpose or other purpose, the present invention proposes a kind of light source module, and it comprises reflecting body, light source, transparency cover, fluorescent material layer and optical mirror slip.Wherein, light source is arranged in the reflecting body, and the light that light source is used to send comprises white light.Transparency cover and reflecting body coat light source.Fluorescent material layer is arranged on the transparency cover, and the light that light source is launched is used for the excitation fluorescent material layer, to send ruddiness.Optical mirror slip is arranged on the optical path of light source, and optical mirror slip and light source lay respectively at the transparency cover both sides.
According to preferred embodiment of the present invention, the part light that above-mentioned light source is launched can be that the excitation fluorescent material layer is to send ruddiness after by the optical mirror slip reflection.
According to preferred embodiment of the present invention, above-mentioned fluorescent material layer can be between transparency cover and optical mirror slip.
According to preferred embodiment of the present invention, above-mentioned fluorescent material layer can be arranged on the central area of transparency cover.
According to preferred embodiment of the present invention, above-mentioned optical mirror slip and the distance between the transparency cover can be between 11.8 to 36.8 centimetres.
According to preferred embodiment of the present invention, the diameter of the scope that is provided with of above-mentioned fluorescent material layer can be between 4 to 10 centimetres.
According to preferred embodiment of the present invention, the wavelength of the above-mentioned ruddiness that fluorescent material layer inspired can be between 630 to 800 nanometers.
According to preferred embodiment of the present invention, above-mentioned optical mirror slip can be ultraviolet light-infrared light optical filtering (UV-IR filter).
According to preferred embodiment of the present invention, above-mentioned light source can be a high-pressure sodium lamp.
According to preferred embodiment of the present invention, the material of above-mentioned transparency cover can be a glass.
Based on above-mentioned purpose or other purpose, the present invention proposes a kind of optical projection system, it comprise light source module, spectral module (light-splitting module), a plurality of spatial light modulator (Spatial LightModulator, SLM), converging module (light-combining module) and projection lens (projectorlens).Wherein, light source is provided with in the reflecting body, and the light that light source is used to send comprises white light.Transparency cover and reflecting body coat light source.Fluorescent material layer is arranged on the transparency cover, and the light that light source is launched is used for the excitation fluorescent material layer, to send ruddiness.Optical mirror slip is arranged on the optical path of light source, and optical mirror slip and light source lay respectively at the transparency cover both sides.Spectral module is arranged on the optical path of light source module, in order to the light that light source module sent is divided into a plurality of coloured light.These spatial light modulators are arranged at respectively on the optical path of these coloured light, and these spatial light modulators make these coloured light of correspondence have picture signal.Converging module is arranged on the optical path of the coloured light that has picture signal, in order to the coloured light that has picture signal is closed light.Projection lens is arranged on the optical path of these coloured light that have picture signal behind the converging module, has these coloured light of picture signal and forms image in order to projection.
According to preferred embodiment of the present invention, the part light that above-mentioned light source is launched can be that the excitation fluorescent material layer is to send ruddiness after by the optical mirror slip reflection.
According to preferred embodiment of the present invention, above-mentioned fluorescent material layer can be between transparency cover and optical mirror slip.
According to preferred embodiment of the present invention, above-mentioned fluorescent material layer can be to be arranged on the central area of transparency cover.
According to preferred embodiment of the present invention, above-mentioned optical mirror slip and the distance between the transparency cover can be between 11.8 to 36.8 centimetres.
According to preferred embodiment of the present invention, the diameter of the scope that is provided with of above-mentioned fluorescent material layer can be between 4 to 10 centimetres.
According to preferred embodiment of the present invention, the wavelength of the above-mentioned ruddiness that fluorescent material layer inspired can be between 630 to 800 nanometers.
According to preferred embodiment of the present invention, above-mentioned optical mirror slip can be ultraviolet light-infrared light optical filtering.
According to preferred embodiment of the present invention, above-mentioned light source can be a high-pressure sodium lamp.
According to preferred embodiment of the present invention, the material of above-mentioned transparency cover can be a glass.
According to preferred embodiment of the present invention, above-mentioned spectral module comprises dichronic mirror (dichroicmirror) at least.
According to preferred embodiment of the present invention, these above-mentioned spatial light modulators can be reflective spatial light modulator or penetration spatial light modulator.
According to preferred embodiment of the present invention, these above-mentioned spatial light modulators can be liquid crystal panels.
According to preferred embodiment of the present invention, above-mentioned converging module comprises two-way prism (X-cubedichroic prism) at least.
Based on above-mentioned, the present invention forms fluorescent material layer on transparency cover, and therefore this fluorescent material layer compare with known technology being subjected to just can sending ruddiness behind the ultraviolet light that light source sends, and the present invention has higher brightness.
State with other purpose, feature and advantage and can become apparent on the present invention for allowing, preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below.
Description of drawings
Fig. 1 is the diagrammatic cross-section according to the light source module of the embodiment of the invention.
Fig. 2 is the diagrammatic cross-section according to the optical projection system of the embodiment of the invention.
The main element description of symbols
10: optical projection system
100: light source module
110: reflecting body
120: light source
130: transparency cover
140: fluorescent material layer
150: optical mirror slip
200: spectral module
210: polarization converter
220a, 220b: catoptron
230a, 230b: dichronic mirror
240r, 240g, 240b: polarisation spectroscope
300r, 300g, 300b: spatial light modulator
400: converging module
500: projection lens
Embodiment
Fig. 1 is the diagrammatic cross-section according to the light source module of the embodiment of the invention.Please refer to Fig. 1, light source module 100 comprises reflecting body 110, light source 120, transparency cover 130, fluorescent material layer 140 and optical mirror slip 150.Light source 120 is arranged in the reflecting body 110, and the light that light source 120 is used to send comprises white light.Light source 120 can be a high-pressure sodium lamp or other can send the light source of white light.In addition, the material of reflecting body 110 can be metal or plastics, and wherein when the material of reflecting body 110 was plastics, the method that forms reflecting body 110 can be to form layer of reflective material on the inwall of reflecting body 110.
Because present embodiment forms fluorescent material layer 140 on transparency cover 130, and this fluorescent material layer 140 can send the ruddiness of wavelength between 630 to 800 nanometers after being subjected to ultraviolet excitation, therefore compare with known technology, (intensity) is stronger for the intensity of the ruddiness of light source module 100.In other words, compare with known technology, the light source module 100 of present embodiment has higher brightness.What deserves to be mentioned is that because the light that light source 120 is launched can not pass through the central area of transparency cover 130, so present embodiment is arranged on fluorescent material layer 140 on the central area of transparency cover 130.In addition, the light source module 100 of present embodiment can be applied to reflective optic optical projection system, penetration optical projection system or other optical system, will be that example describes with the reflective optic optical projection system below.
Fig. 2 is the diagrammatic cross-section according to the optical projection system of the embodiment of the invention.Please refer to Fig. 2, optical projection system 10 comprises light source module 100, spectral module 200, a plurality of spatial light modulator 300r, 300g, 300b, converging module 400 and projection lens 500.Spectral module 200 is arranged on the optical path of light source module 100, is divided into a plurality of coloured light in order to the light that light source module 100 is sent.In addition, spectral module 200 comprises dichronic mirror at least.In the present embodiment, spectral module 200 comprises polarization converter 210 (S-P converter), catoptron 220a, 220b, dichronic mirror 230a, 230b and polarisation spectroscope (polarization beam splitter) 240r, 240g, 240b.
These spatial light modulators 300r, 300g and 300b can be reflective spatial light modulator or penetration spatial light modulator.In the present embodiment, these spatial light modulators 300r, 300g and 300b can be monocrystalline silicon reflective liquid crystal panel (Liquid Crystal on Silicon display panel, LCOS display panel), the liquid crystal panel of high temperature polysilicon liquid crystal panel (High Temperature PolysiliconLiquid Crystal Display panel, HTPS LCD panel) or other type.In addition, converging module 400 can be two-way prism.
More specifically, the light that light source module 100 is sent converts the light of S polarization to by after the polarization converter 210.Afterwards, the light of S polarization changes direct of travel by the effect of reflecting surface mirror 220a, and is incident to dichronic mirror 230a.Then, dichronic mirror 230a is divided into the ruddiness of S polarization and the blue green light of S polarization with the light of S polarization, and wherein the ruddiness of S polarization is incident to polarisation spectroscope 240r by the effect of reflecting surface mirror 220b.Because polarisation spectroscope 240r can produce reflection and the effect that penetrates respectively for the light of different polarization, so the ruddiness of S polarization can be by polarisation spectroscope 240r reflection toward spatial light modulator 300r.Then, the ruddiness of S polarization becomes the ruddiness R that carries picture signal by the modulation of spatial light modulator 300r again, and the P polarization can be changed in the polarization direction of ruddiness R.
The blue green light of S polarization is divided into the blue light of S polarization and the green glow of S polarization by after the dichronic mirror 230b.Wherein, the blue light of S polarization becomes the blue light B that carries picture signal after by polarisation spectroscope 240b and spatial light modulator 300b.Similarly, the green glow of S polarization becomes the green glow G that carries picture signal after by polarisation spectroscope 240g and spatial light modulator 300g.Then, ruddiness R, the green glow G and the blue light B that carry picture signal are incident to converging module 400 respectively, so that close light.Can be projected on the screen (not marking among the figure) by projection lens 500 through ruddiness R, green glow G and the blue light B that closes behind the light, and on screen display image.
Compare with known technology,, therefore when doing white balance, just needn't descend too much corresponding to the driving voltage of the spatial light modulator 300g of green glow because light source module 100 can send stronger ruddiness.In other words, do not changing under the optical path system architecture, the optical projection system 10 of present embodiment can have higher brightness.
In sum, the present invention's light source module and optical projection system have following advantage at least:
One, because the present invention forms fluorescent material layer on transparency cover, and therefore this fluorescent material layer compare with known technology accepting just can to inspire ruddiness behind the ultraviolet light that light source sends, and the present invention has higher brightness.
Two, because the light that light source sent can be by the central area of transparency cover, therefore being arranged on this last fluorescent material layer in zone will can not influence the light that light source sends.In addition, the ultraviolet light that light source sent also can be after reflecting through optical mirror slip, and the excitation fluorescent material layer is to send ruddiness.
Three, under the situation that does not change system architecture and function mode, the present invention's optical projection system has higher brightness.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any person of ordinary skill in the field; without departing from the spirit and scope of the invention; when can doing a little change and improvement, thus the present invention's protection domain should with claims the person of being defined be as the criterion.
Claims (24)
1. light source module is characterized in that comprising:
Reflecting body;
Light source is arranged in this reflecting body, and the light that this light source is used to send comprises white light;
Transparency cover, this transparency cover and this reflecting body coat this light source;
Fluorescent material layer is arranged on this transparency cover, and wherein the light launched of this light source is suitable for exciting this fluorescent material layer, to send ruddiness; And
Optical mirror slip is arranged on the optical path of this light source, and this optical mirror slip and this light source lay respectively at this transparency cover both sides.
2. light source module according to claim 1 is characterized in that light that described light source launches after by this optical mirror slip reflection, excites this fluorescent material layer, to send ruddiness.
3. light source module according to claim 1 is characterized in that described fluorescent material layer is between this transparency cover and this optical mirror slip.
4. light source module according to claim 1 is characterized in that described fluorescent material layer is arranged on the central area of this transparency cover.
5. light source module according to claim 1 is characterized in that the distance between described optical mirror slip and this transparency cover is between 11.8 to 36.8 centimetres.
6. light source module according to claim 1, the diameter that it is characterized in that the scope that is provided with of described fluorescent material layer are between 4 to 10 centimetres.
7. light source module according to claim 1, the wavelength that it is characterized in that the ruddiness that described fluorescent material layer inspires are between 630 to 800 nanometers.
8. light source module according to claim 1 is characterized in that described optical mirror slip comprises ultraviolet light-infrared light optical filtering.
9. light source module according to claim 1 is characterized in that described light source comprises high-pressure sodium lamp.
10. light source module according to claim 1 is characterized in that the material of described transparency cover comprises glass.
11. an optical projection system is characterized in that comprising:
Light source module comprises:
Reflecting body;
Light source is arranged in this reflecting body, and the light that this light source is used to send comprises white light;
Transparency cover, this transparency cover and this reflecting body coat this light source;
Fluorescent material layer is arranged on this transparency cover, and wherein the light launched of this light source is used to excite this fluorescent material layer, to send ruddiness;
Optical mirror slip is arranged on the optical path of this light source, and this optical mirror slip and this light source lay respectively at this transparency cover both sides;
Spectral module is arranged on the optical path of this light source module, in order to the light that this light source module sent is divided into a plurality of coloured light;
A plurality of spatial light modulators are arranged at respectively on the optical path of above-mentioned these coloured light, and above-mentioned these spatial light modulators make that stating these coloured light on the correspondence has picture signal;
Converging module is arranged at and has on the optical path of stating these coloured light on the picture signal, in order to state these coloured light on the picture signal and close light for having; And
Projection lens is arranged at having on the optical path of stating these coloured light on the picture signal behind this converging module, has in order to projection and states these coloured light on the picture signal and form image.
12. optical projection system according to claim 11 is characterized in that light that described light source launches after by this optical mirror slip reflection, excites this fluorescent material layer, to send ruddiness.
13. optical projection system according to claim 11 is characterized in that described fluorescent material layer is between this transparency cover and this optical mirror slip.
14. optical projection system according to claim 11 is characterized in that described fluorescent material layer is arranged on the central area of this transparency cover.
15. optical projection system according to claim 11 is characterized in that the distance between described optical mirror slip and this transparency cover is between 11.8 to 36.8 centimetres.
16. optical projection system according to claim 11, the diameter that it is characterized in that the scope that is provided with of described fluorescent material layer are between 4 to 10 centimetres.
17. optical projection system according to claim 11, the wavelength that it is characterized in that the ruddiness that described fluorescent material layer inspires are between 630 to 800 nanometers.
18. optical projection system according to claim 11 is characterized in that described optical mirror slip comprises ultraviolet light-infrared light optical filtering.
19. optical projection system according to claim 11 is characterized in that described light source comprises high-pressure sodium lamp.
20. optical projection system according to claim 11 is characterized in that the material of described transparency cover comprises glass.
21. optical projection system according to claim 11 is characterized in that described spectral module comprises dichronic mirror at least.
22. optical projection system according to claim 11 is characterized in that described spatial light modulator comprises reflective spatial light modulator or penetration spatial light modulator.
23. optical projection system according to claim 11 is characterized in that described spatial light modulator comprises liquid crystal panel.
24. optical projection system according to claim 11 is characterized in that described converging module comprises two-way prism at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100807191A CN100432748C (en) | 2005-07-05 | 2005-07-05 | Light-source module and optical projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100807191A CN100432748C (en) | 2005-07-05 | 2005-07-05 | Light-source module and optical projection system |
Publications (2)
| Publication Number | Publication Date |
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| CN1892285A true CN1892285A (en) | 2007-01-10 |
| CN100432748C CN100432748C (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100807191A Expired - Fee Related CN100432748C (en) | 2005-07-05 | 2005-07-05 | Light-source module and optical projection system |
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| CN (1) | CN100432748C (en) |
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| CN101765800A (en) * | 2007-07-25 | 2010-06-30 | 皇家飞利浦电子股份有限公司 | Color conversion device and color controllable light-output device |
| CN101937164A (en) * | 2009-06-30 | 2011-01-05 | 卡西欧计算机株式会社 | Light supply apparatus and projector |
| CN101995748A (en) * | 2009-08-20 | 2011-03-30 | 精工爱普生株式会社 | Projector |
| CN102004383A (en) * | 2009-08-27 | 2011-04-06 | 精工爱普生株式会社 | Projector |
| CN102193296A (en) * | 2010-03-18 | 2011-09-21 | 精工爱普生株式会社 | Illumination device and projector |
| CN101750855B (en) * | 2008-12-19 | 2011-11-16 | 绎立锐光科技开发(深圳)有限公司 | Protective method and device of projection system and tinting device |
| CN102330888A (en) * | 2010-07-12 | 2012-01-25 | 红蝶科技(深圳)有限公司 | Light mixing type monochromatic light source with function of fluorescent powder excitation and projection optical engine using same |
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| JP4129777B2 (en) * | 1997-12-26 | 2008-08-06 | 岩崎電気株式会社 | Optical device and liquid crystal projector using the same |
| US6351069B1 (en) * | 1999-02-18 | 2002-02-26 | Lumileds Lighting, U.S., Llc | Red-deficiency-compensating phosphor LED |
| JP2000305040A (en) * | 1999-04-19 | 2000-11-02 | Toshiba Corp | Projection type display device |
| JP2003505900A (en) * | 1999-07-20 | 2003-02-12 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method and apparatus for adjusting white balance |
| US6688747B2 (en) * | 2001-06-08 | 2004-02-10 | Infocus Corporation | Achieving color balance in image projection systems by injecting compensating light |
| CN1220279C (en) * | 2002-05-13 | 2005-09-21 | 诠兴开发科技股份有限公司 | Purple red light-emitting diode |
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- 2005-07-05 CN CNB2005100807191A patent/CN100432748C/en not_active Expired - Fee Related
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| CN101765800A (en) * | 2007-07-25 | 2010-06-30 | 皇家飞利浦电子股份有限公司 | Color conversion device and color controllable light-output device |
| CN101750855B (en) * | 2008-12-19 | 2011-11-16 | 绎立锐光科技开发(深圳)有限公司 | Protective method and device of projection system and tinting device |
| CN101937164A (en) * | 2009-06-30 | 2011-01-05 | 卡西欧计算机株式会社 | Light supply apparatus and projector |
| CN101995748A (en) * | 2009-08-20 | 2011-03-30 | 精工爱普生株式会社 | Projector |
| CN104880902A (en) * | 2009-08-20 | 2015-09-02 | 精工爱普生株式会社 | Projector |
| US8602562B2 (en) | 2009-08-20 | 2013-12-10 | Seiko Epson Corporation | Projector including a first and a second solid state light source |
| CN102004383B (en) * | 2009-08-27 | 2013-05-15 | 精工爱普生株式会社 | Projector |
| US8382288B2 (en) | 2009-08-27 | 2013-02-26 | Seiko Epson Corporation | Projector with solid state light source |
| CN102004383A (en) * | 2009-08-27 | 2011-04-06 | 精工爱普生株式会社 | Projector |
| CN102193296B (en) * | 2010-03-18 | 2013-03-20 | 精工爱普生株式会社 | Illumination device and projector |
| CN102193296A (en) * | 2010-03-18 | 2011-09-21 | 精工爱普生株式会社 | Illumination device and projector |
| CN102330888A (en) * | 2010-07-12 | 2012-01-25 | 红蝶科技(深圳)有限公司 | Light mixing type monochromatic light source with function of fluorescent powder excitation and projection optical engine using same |
| CN103941532A (en) * | 2013-01-17 | 2014-07-23 | 台达电子工业股份有限公司 | Optical system |
| CN103941532B (en) * | 2013-01-17 | 2015-11-25 | 台达电子工业股份有限公司 | Optical system |
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