FR608226A - Lighting device for projection apparatus - Google Patents
Lighting device for projection apparatusInfo
- Publication number
- FR608226A FR608226A FR608226DA FR608226A FR 608226 A FR608226 A FR 608226A FR 608226D A FR608226D A FR 608226DA FR 608226 A FR608226 A FR 608226A
- Authority
- FR
- France
- Prior art keywords
- lighting device
- projection apparatus
- projection
- lighting
- 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
- G03B21/16—Cooling; Preventing overheating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR608226T | 1925-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR608226A true FR608226A (en) | 1926-07-23 |
Family
ID=8975926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR608226D Expired FR608226A (en) | 1925-11-06 | 1925-11-06 | Lighting device for projection apparatus |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR608226A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3031922A (en) * | 1957-08-01 | 1962-05-01 | Stadler George | Direct color enlarging apparatus |
-
1925
- 1925-11-06 FR FR608226D patent/FR608226A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3031922A (en) * | 1957-08-01 | 1962-05-01 | Stadler George | Direct color enlarging apparatus |
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