JPS4920964A - - Google Patents
Info
- Publication number
- JPS4920964A JPS4920964A JP48044962A JP4496273A JPS4920964A JP S4920964 A JPS4920964 A JP S4920964A JP 48044962 A JP48044962 A JP 48044962A JP 4496273 A JP4496273 A JP 4496273A JP S4920964 A JPS4920964 A JP S4920964A
- Authority
- JP
- Japan
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Optical Elements Other Than Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24590472A | 1972-04-20 | 1972-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4920964A true JPS4920964A (https=) | 1974-02-23 |
| JPS5443317B2 JPS5443317B2 (https=) | 1979-12-19 |
Family
ID=22928579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4496273A Expired JPS5443317B2 (https=) | 1972-04-20 | 1973-04-20 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3794829A (https=) |
| JP (1) | JPS5443317B2 (https=) |
| DE (1) | DE2320247A1 (https=) |
| ES (1) | ES414498A1 (https=) |
| FR (1) | FR2181010B2 (https=) |
| IT (1) | IT1045303B (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51109180A (https=) * | 1975-02-24 | 1976-09-27 | Goiteisoro Tarutabur Igunashio |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1044203A (en) * | 1975-05-01 | 1978-12-12 | James D. Howe | Lighting panel having improved refracting elements |
| FR2454135A1 (fr) * | 1979-04-13 | 1980-11-07 | Suisse Horlogerie | Structure de surface diffusante pour un guide de lumiere de dispositif d'affichage d'informations |
| DE3044470A1 (de) * | 1980-11-26 | 1982-06-03 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Verfahren zur moeglichst gleichmaessigen ausleuchtung einer flaeche ausgehend von einem parallelstrahlenbuendel und vorrichtung der laser-diagnostik |
| US4545007A (en) * | 1984-09-12 | 1985-10-01 | Devine Lighting | Luminaire with lenticular lens |
| US4703405A (en) * | 1986-07-17 | 1987-10-27 | Ian Lewin | Glare reducing lens |
| US5124839A (en) * | 1989-11-08 | 1992-06-23 | Canon Kabushiki Kaisha | Phase-type focusing screen |
| US5003448A (en) * | 1990-02-07 | 1991-03-26 | K-S-H, Inc. | Light-weight lenticular lighting panel |
| US6033094A (en) * | 1997-10-02 | 2000-03-07 | Fresnel Technologies, Inc. | Microlens array for improved illumination patterns |
| US7187505B2 (en) * | 2002-10-07 | 2007-03-06 | Fresnel Technologies, Inc. | Imaging lens for infrared cameras |
| TW200528849A (en) * | 2004-02-27 | 2005-09-01 | Hon Hai Prec Ind Co Ltd | Light guide plate |
| JP4499519B2 (ja) * | 2004-07-12 | 2010-07-07 | 大日本印刷株式会社 | 拡散シート、面光源装置、透過型表示装置 |
| US20100128351A1 (en) * | 2008-11-21 | 2010-05-27 | 3M Innovative Properties Company | Curved sided cone structures for controlling gain and viewing angle in an optical film |
| DE102011103981A1 (de) * | 2011-06-10 | 2012-12-13 | Siteco Beleuchtungstechnik Gmbh | Prismenplatte |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2474317A (en) * | 1949-06-28 | Light refracting and transmitting | ||
| US1241886A (en) * | 1916-07-12 | 1917-10-02 | Levi Leroy Rowe | Lens. |
| US2859334A (en) * | 1954-09-09 | 1958-11-04 | Edwin F Guth Company | Louvers |
| US3038065A (en) * | 1957-05-21 | 1962-06-05 | Holophane Co Inc | Prismatic plate |
| US3096032A (en) * | 1959-09-23 | 1963-07-02 | Lighting Products Inc | Lighting diffuser |
| US3234376A (en) * | 1963-02-11 | 1966-02-08 | Michael J Ceglia | Glare-free lighting fixture |
| US3566102A (en) * | 1967-09-13 | 1971-02-23 | Artcrest Products Co Inc | Light panel |
| US3671101A (en) * | 1969-07-25 | 1972-06-20 | Dan M Finch | Light control material |
| US3578967A (en) * | 1969-08-27 | 1971-05-18 | Ksh Inc | Prismatic lighting panel |
-
1972
- 1972-04-20 US US00245904A patent/US3794829A/en not_active Expired - Lifetime
-
1973
- 1973-04-18 ES ES414498A patent/ES414498A1/es not_active Expired
- 1973-04-19 IT IT7247/73A patent/IT1045303B/it active
- 1973-04-19 DE DE2320247A patent/DE2320247A1/de active Pending
- 1973-04-19 FR FR7314387A patent/FR2181010B2/fr not_active Expired
- 1973-04-20 JP JP4496273A patent/JPS5443317B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51109180A (https=) * | 1975-02-24 | 1976-09-27 | Goiteisoro Tarutabur Igunashio |
Also Published As
| Publication number | Publication date |
|---|---|
| US3794829A (en) | 1974-02-26 |
| DE2320247A1 (de) | 1973-10-25 |
| FR2181010B2 (https=) | 1974-11-08 |
| FR2181010A2 (https=) | 1973-11-30 |
| IT1045303B (it) | 1980-05-10 |
| ES414498A1 (es) | 1976-05-01 |
| JPS5443317B2 (https=) | 1979-12-19 |