JP4290095B2 - 表示光学系および画像表示システム - Google Patents
表示光学系および画像表示システム Download PDFInfo
- Publication number
- JP4290095B2 JP4290095B2 JP2004236839A JP2004236839A JP4290095B2 JP 4290095 B2 JP4290095 B2 JP 4290095B2 JP 2004236839 A JP2004236839 A JP 2004236839A JP 2004236839 A JP2004236839 A JP 2004236839A JP 4290095 B2 JP4290095 B2 JP 4290095B2
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- JP
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- Prior art keywords
- optical system
- light
- display
- scanning
- laser
- 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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-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/48—Laser speckle optics
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
さらに、特許文献3と特許文献4にて提案の方法では、2次元もしくは1次元の光変調器の画像を投影するため、空間光変調器が必要となってしまう。
これらの回折光は、投射光学系107を介して走査面108に向かう。投射光学系107から射出した回折光114a−1,114a−2,114a−3は、走査面108に入射する際の入射角が互いに異なる。このため、走査面108上への入射拡がり角(収束角)が異なる複数の回折光成分が入射し、これらの回折光成分によって形成された互いに異なる複数のスペックルパターンが重畳されて観察者に観察される。
102,202,302 コリメータ光学系
103,203,303 集光光学系
104,204,304 2次元走査デバイス
105,205,305 走査光学系
106,206,306 光拡散角変換素子
107,207,307 投射光学系
108,208,308 走査面(スクリーン)
116 色合成系
Claims (6)
- コヒーレンス性を有する光を発する光源と、
前記光源から発した光を略平行化するコリメート光学系と、
前記コリメート光学系から出射した光を走査する走査手段と、
前記走査手段からの前記光で中間像を形成させる第1の光学系と、
前記中間像からの前記光を、実在する表示面上に結像させる第2の光学系と、
回折作用を有し、前記第1の光学系と前記第2の光学系との間で、前記第1の光学系によって形成される中間像の位置に配置された光学部材とを備えており、
前記光学部材が、前記回折作用によって、前記第1の光学系から出射した光を前記表示面に対して互いに異なる入射角で入射する複数の回折光に分解することを特徴とする表示光学系。 - 前記第2の光学系により前記光学部材と前記表示面とが共役の関係にあり、
前記光学部材は、前記光の進行方向とは異なる方向に移動可能であることを特徴とする請求項1に記載の表示光学系。 - 前記光学部材は、前記光を反射することを特徴とする請求項1又は2に記載の表示光学系。
- 前記光学部材がマイクロレンズアレイであることを特徴とする請求項1又は2に記載の表示光学系。
- 請求項1から4のいずれか1つに記載の表示光学系と、
前記光源を変調する変調回路とを有することを特徴とする画像投射装置。 - 請求項5に記載の画像投射装置と、
該画像投射装置に画像信号を供給する画像信号供給装置とを有することを特徴とする画像表示システム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004236839A JP4290095B2 (ja) | 2004-08-16 | 2004-08-16 | 表示光学系および画像表示システム |
US11/204,487 US7572015B2 (en) | 2004-08-16 | 2005-08-15 | Displaying optical system and image projection apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004236839A JP4290095B2 (ja) | 2004-08-16 | 2004-08-16 | 表示光学系および画像表示システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006053495A JP2006053495A (ja) | 2006-02-23 |
JP4290095B2 true JP4290095B2 (ja) | 2009-07-01 |
Family
ID=35799114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004236839A Expired - Fee Related JP4290095B2 (ja) | 2004-08-16 | 2004-08-16 | 表示光学系および画像表示システム |
Country Status (2)
Country | Link |
---|---|
US (1) | US7572015B2 (ja) |
JP (1) | JP4290095B2 (ja) |
Cited By (1)
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WO2020262698A1 (ja) | 2019-06-28 | 2020-12-30 | 大日本印刷株式会社 | 照明装置及び照明方法 |
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Also Published As
Publication number | Publication date |
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US7572015B2 (en) | 2009-08-11 |
US20060033009A1 (en) | 2006-02-16 |
JP2006053495A (ja) | 2006-02-23 |
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