JPS626201B2 - - Google Patents
Info
- Publication number
- JPS626201B2 JPS626201B2 JP55046397A JP4639780A JPS626201B2 JP S626201 B2 JPS626201 B2 JP S626201B2 JP 55046397 A JP55046397 A JP 55046397A JP 4639780 A JP4639780 A JP 4639780A JP S626201 B2 JPS626201 B2 JP S626201B2
- Authority
- JP
- Japan
- Prior art keywords
- fresnel lens
- lens sheet
- constitution
- rising surface
- light
- 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
Links
- 230000000630 rising effect Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 230000003595 spectral effect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
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 |
---|---|---|---|
JP4639780A JPS56142501A (en) | 1980-04-08 | 1980-04-08 | Fresnel lens sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4639780A JPS56142501A (en) | 1980-04-08 | 1980-04-08 | Fresnel lens sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56142501A JPS56142501A (en) | 1981-11-06 |
JPS626201B2 true JPS626201B2 (ko) | 1987-02-09 |
Family
ID=12746008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4639780A Granted JPS56142501A (en) | 1980-04-08 | 1980-04-08 | Fresnel lens sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56142501A (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57124837U (ko) * | 1981-01-28 | 1982-08-04 | ||
JPS597928A (ja) * | 1982-07-06 | 1984-01-17 | Alps Electric Co Ltd | 透過形液晶表示装置 |
JPS61130903A (ja) * | 1984-11-30 | 1986-06-18 | Hitachi Ltd | フレネルレンズとその製造方法 |
JPS61256337A (ja) * | 1985-05-10 | 1986-11-13 | Mitsubishi Rayon Co Ltd | 背面投影スクリ−ン |
JP2634778B2 (ja) * | 1995-01-12 | 1997-07-30 | 株式会社日立製作所 | フレネルレンズの製造方法 |
FR2799268B1 (fr) * | 1999-09-30 | 2002-01-25 | Valeo Vision | Procede de fabrication d'elements dioptriques et elements dioptriques pour dispositif d'eclairage |
JP5581127B2 (ja) * | 2010-06-16 | 2014-08-27 | 株式会社エンプラス | 光束制御部材およびこれを備えた光学装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2200646A (en) * | 1938-02-28 | 1940-05-14 | John D Strong | Transparent projection screen |
JPS50125755A (ko) * | 1974-03-19 | 1975-10-03 | ||
JPS5117452A (ja) * | 1974-08-02 | 1976-02-12 | Ichiro Hosaka | Furenerurenzu |
-
1980
- 1980-04-08 JP JP4639780A patent/JPS56142501A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2200646A (en) * | 1938-02-28 | 1940-05-14 | John D Strong | Transparent projection screen |
JPS50125755A (ko) * | 1974-03-19 | 1975-10-03 | ||
JPS5117452A (ja) * | 1974-08-02 | 1976-02-12 | Ichiro Hosaka | Furenerurenzu |
Also Published As
Publication number | Publication date |
---|---|
JPS56142501A (en) | 1981-11-06 |
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