DE974514C - Lighting device for projection image devices - Google Patents
Lighting device for projection image devicesInfo
- Publication number
- DE974514C DE974514C DEZ1345D DEZ0001345D DE974514C DE 974514 C DE974514 C DE 974514C DE Z1345 D DEZ1345 D DE Z1345D DE Z0001345 D DEZ0001345 D DE Z0001345D DE 974514 C DE974514 C DE 974514C
- Authority
- DE
- Germany
- Prior art keywords
- grid
- light source
- projection image
- lighting device
- 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
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
- G03B21/208—Homogenising, shaping of the illumination light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Description
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
© 009 692/22 1.61© 009 692/22 1.61
Claims (1)
Deutsche Patentschrift Nr. 561 573; USA.-Patentschrift Nr. 1 762 932.Considered publications:
German Patent No. 561 573; U.S. Patent No. 1,762,932.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ1345D DE974514C (en) | 1937-12-01 | 1937-12-01 | Lighting device for projection image devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ1345D DE974514C (en) | 1937-12-01 | 1937-12-01 | Lighting device for projection image devices |
Publications (1)
Publication Number | Publication Date |
---|---|
DE974514C true DE974514C (en) | 1961-01-26 |
Family
ID=7618079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ1345D Expired DE974514C (en) | 1937-12-01 | 1937-12-01 | Lighting device for projection image devices |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE974514C (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1762932A (en) * | 1927-05-11 | 1930-06-10 | Eastman Kodak Co | Projection system for color pictures |
DE561573C (en) * | 1928-04-05 | 1932-10-15 | Aeg | Lighting device for projector |
-
1937
- 1937-12-01 DE DEZ1345D patent/DE974514C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1762932A (en) * | 1927-05-11 | 1930-06-10 | Eastman Kodak Co | Projection system for color pictures |
DE561573C (en) * | 1928-04-05 | 1932-10-15 | Aeg | Lighting device for projector |
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