JPH0216898B2 - - Google Patents
Info
- Publication number
- JPH0216898B2 JPH0216898B2 JP57227909A JP22790982A JPH0216898B2 JP H0216898 B2 JPH0216898 B2 JP H0216898B2 JP 57227909 A JP57227909 A JP 57227909A JP 22790982 A JP22790982 A JP 22790982A JP H0216898 B2 JPH0216898 B2 JP H0216898B2
- Authority
- JP
- Japan
- Prior art keywords
- prism
- light
- lens
- lens surface
- fresnel lens
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/62—Translucent screens
- G03B21/625—Lenticular translucent screens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57227909A JPS59119340A (ja) | 1982-12-27 | 1982-12-27 | フレネルレンズ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57227909A JPS59119340A (ja) | 1982-12-27 | 1982-12-27 | フレネルレンズ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59119340A JPS59119340A (ja) | 1984-07-10 |
JPH0216898B2 true JPH0216898B2 (pt) | 1990-04-18 |
Family
ID=16868196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57227909A Granted JPS59119340A (ja) | 1982-12-27 | 1982-12-27 | フレネルレンズ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59119340A (pt) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6152601A (ja) * | 1984-08-22 | 1986-03-15 | Mitsubishi Rayon Co Ltd | フレネルレンズシ−ト |
JPS6177832A (ja) * | 1984-09-25 | 1986-04-21 | Mitsubishi Electric Corp | 透過形スクリ−ン |
JPS61208041A (ja) * | 1985-03-11 | 1986-09-16 | Mitsubishi Rayon Co Ltd | 背面投影スクリ−ン |
JPS61256337A (ja) * | 1985-05-10 | 1986-11-13 | Mitsubishi Rayon Co Ltd | 背面投影スクリ−ン |
JPS6210637A (ja) * | 1985-07-09 | 1987-01-19 | Mitsubishi Rayon Co Ltd | 背面投影スクリ−ン |
JPS62113131A (ja) * | 1985-11-13 | 1987-05-25 | Mitsubishi Rayon Co Ltd | 透過型スクリ−ン |
JP3655970B2 (ja) * | 1996-07-29 | 2005-06-02 | 大日本印刷株式会社 | 透過型スクリーン |
JP2001337206A (ja) * | 2000-05-26 | 2001-12-07 | Toppan Printing Co Ltd | フレネルレンズ |
JP4014837B2 (ja) * | 2001-10-05 | 2007-11-28 | 三菱電機株式会社 | 透過型スクリーンおよび投写型表示装置 |
WO2004003661A1 (ja) * | 2002-06-27 | 2004-01-08 | Dai Nippon Printing Co., Ltd. | プロジェクションスクリーン及びプロジェクションディスプレイ装置 |
JP2004170862A (ja) * | 2002-11-22 | 2004-06-17 | Dainippon Printing Co Ltd | フレネルレンズ |
CN100449401C (zh) * | 2002-11-26 | 2009-01-07 | 三菱电机株式会社 | 透射式屏幕及投射式显示装置 |
CN101907263B (zh) | 2009-05-09 | 2013-08-28 | 西铁城电子股份有限公司 | 透镜部件和使用该透镜部件的光学单元 |
JP5626754B2 (ja) | 2010-01-10 | 2014-11-19 | シチズン電子株式会社 | 光学ユニット |
JP5606137B2 (ja) | 2010-04-27 | 2014-10-15 | シチズン電子株式会社 | 光学ユニット |
JP5649047B2 (ja) | 2010-09-29 | 2015-01-07 | シチズン電子株式会社 | レンズ部材及び光学ユニット |
JP5571251B2 (ja) | 2011-08-12 | 2014-08-13 | シチズン電子株式会社 | レンズ部材及びこのレンズ部材を使用した発光装置 |
-
1982
- 1982-12-27 JP JP57227909A patent/JPS59119340A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS59119340A (ja) | 1984-07-10 |
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