FR1277552A - Improvements to optical projection systems - Google Patents
Improvements to optical projection systemsInfo
- Publication number
- FR1277552A FR1277552A FR849271A FR849271A FR1277552A FR 1277552 A FR1277552 A FR 1277552A FR 849271 A FR849271 A FR 849271A FR 849271 A FR849271 A FR 849271A FR 1277552 A FR1277552 A FR 1277552A
- Authority
- FR
- France
- Prior art keywords
- optical projection
- projection systems
- systems
- optical
- projection
- 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
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
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2026—Gas discharge type light sources, e.g. arcs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR849271A FR1277552A (en) | 1961-01-10 | 1961-01-10 | Improvements to optical projection systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR849271A FR1277552A (en) | 1961-01-10 | 1961-01-10 | Improvements to optical projection systems |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1277552A true FR1277552A (en) | 1961-12-01 |
Family
ID=8746421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR849271A Expired FR1277552A (en) | 1961-01-10 | 1961-01-10 | Improvements to optical projection systems |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1277552A (en) |
-
1961
- 1961-01-10 FR FR849271A patent/FR1277552A/en not_active Expired
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