JP2007171926A5 - - Google Patents
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- Publication number
- JP2007171926A5 JP2007171926A5 JP2006282268A JP2006282268A JP2007171926A5 JP 2007171926 A5 JP2007171926 A5 JP 2007171926A5 JP 2006282268 A JP2006282268 A JP 2006282268A JP 2006282268 A JP2006282268 A JP 2006282268A JP 2007171926 A5 JP2007171926 A5 JP 2007171926A5
- Authority
- JP
- Japan
- Prior art keywords
- light
- polarization
- separation element
- conversion device
- polarization separation
- Prior art date
- 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.)
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Claims (5)
前記偏光分離素子に対向して略平行に配置され前記偏光分離素子で反射された前記第２の偏光の光路を変換する反射素子と、
前記反射素子の前記第２の偏光が入射する側とは反対側に配置される光拡散層と、
前記第１及び第２の偏光のいずれか一方の偏光方向を他方の偏光方向に変換する位相差板と、
を備える偏光変換装置。 The first light and the second polarization are arranged so as to be inclined with respect to the optical path of the incident light and transmit the first polarized light and reflect the second polarized light. A polarization separation element that separates into
A reflective element that is arranged substantially parallel to the polarization separation element and converts an optical path of the second polarized light reflected by the polarization separation element;
A light diffusion layer disposed on a side opposite to the side on which the second polarized light of the reflective element is incident;
A phase difference plate that converts the polarization direction of one of the first and second polarizations into the other polarization direction;
A polarization conversion device comprising:
前記偏光分離素子と前記光拡散層との間に配置される複数の第２の透光性部材と、
を備え、
前記拡散層は、フロスト加工された部分及び反射性コートの少なくとも一方を含む請求項１から請求項２のいずれか一項記載の偏光変換装置。 A plurality of first translucent members disposed between the polarization separation element and the reflection element;
A plurality of second light transmissive members disposed between the polarization separation element and the light diffusion layer;
With
The polarization conversion device according to claim 1 , wherein the diffusion layer includes at least one of a frosted portion and a reflective coat .
前記光源光を照明領域での照度が面内で均一な光にするとともに、請求項１から請求項４のいずれか一項記載の偏光変換装置を有し、前記光源光の偏光方向を揃えて照明光として形成し、射出する照明光学系と、
前記照明光学系からの照明光を画像情報に応じて変調し、画像光を形成する光変調装置と、
前記光変調装置で形成された画像光を投射する投射光学系と
を備えることを特徴とするプロジェクタ。 A light source that generates source light;
The illuminance in the illumination area is made uniform in the surface of the light source light, and the polarization conversion device according to any one of claims 1 to 4 is provided, and the polarization direction of the light source light is aligned. An illumination optical system formed and emitted as illumination light;
A light modulation device that modulates illumination light from the illumination optical system according to image information and forms image light;
A projector comprising: a projection optical system that projects image light formed by the light modulation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006282268A JP4946342B2 (en) | 2005-11-24 | 2006-10-17 | Polarization conversion device and projector |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005338278 | 2005-11-24 | ||
| JP2005338278 | 2005-11-24 | ||
| JP2006282268A JP4946342B2 (en) | 2005-11-24 | 2006-10-17 | Polarization conversion device and projector |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2007171926A JP2007171926A (en) | 2007-07-05 |
| JP2007171926A5 true JP2007171926A5 (en) | 2009-11-05 |
| JP4946342B2 JP4946342B2 (en) | 2012-06-06 |
Family
ID=38298504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006282268A Active JP4946342B2 (en) | 2005-11-24 | 2006-10-17 | Polarization conversion device and projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4946342B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4943885B2 (en) * | 2007-02-16 | 2012-05-30 | 株式会社リコー | Multi-wavelength polarization conversion element, illumination unit, and image display device |
| CN114518685B (en) * | 2020-11-19 | 2023-01-03 | 中强光电股份有限公司 | Illumination system and projection apparatus |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004185033A (en) * | 1996-06-25 | 2004-07-02 | Seiko Epson Corp | Polarized light converting element, polarized light lighting device, and display device and projection type display device using same |
| JP2000298212A (en) * | 1996-07-25 | 2000-10-24 | Seiko Epson Corp | Optical device, production thereof and projection-type display device |
| JPH1096816A (en) * | 1996-09-25 | 1998-04-14 | Sumitomo Bakelite Co Ltd | Sheet-like polarizing element and liquid crystal display element formed by using the same |
| JPH11242118A (en) * | 1998-02-25 | 1999-09-07 | Seiko Epson Corp | Polarized light separating element, polarization conversion element and projection type display device |
| JP2000193955A (en) * | 1998-12-28 | 2000-07-14 | Optrex Corp | Liquid crystal display device |
| JP3598987B2 (en) * | 2001-03-28 | 2004-12-08 | セイコーエプソン株式会社 | Liquid crystal display and electronic equipment |
| JP2003029009A (en) * | 2001-07-13 | 2003-01-29 | Sumitomo Chem Co Ltd | Semitransmissive-semireflective film, and polarizing element and liquid crystal display device using the same |
| TWI230269B (en) * | 2002-08-30 | 2005-04-01 | Seiko Epson Corp | Illuminating device, projector, and method of assembling illuminating device |
| JP2004093941A (en) * | 2002-08-30 | 2004-03-25 | Optrex Corp | Liquid crystal display element and its manufacturing method |
| JP2005107096A (en) * | 2003-09-30 | 2005-04-21 | Dainippon Printing Co Ltd | Projection screen and projection system equipped therewith |
| JP2005227708A (en) * | 2004-02-16 | 2005-08-25 | Toshiba Matsushita Display Technology Co Ltd | Liquid crystal display element |
| JP4614421B2 (en) * | 2004-03-31 | 2011-01-19 | 日東電工株式会社 | Manufacturing method of polarizing film |
-
2006
- 2006-10-17 JP JP2006282268A patent/JP4946342B2/en active Active
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