FR972902A - Combination reflector for image projection devices - Google Patents
Combination reflector for image projection devicesInfo
- Publication number
- FR972902A FR972902A FR972902DA FR972902A FR 972902 A FR972902 A FR 972902A FR 972902D A FR972902D A FR 972902DA FR 972902 A FR972902 A FR 972902A
- Authority
- FR
- France
- Prior art keywords
- image projection
- projection devices
- combination reflector
- reflector
- combination
- 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
- G03B21/2066—Reflectors in illumination beam
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR972902T | 1941-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR972902A true FR972902A (en) | 1951-02-05 |
Family
ID=9516360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR972902D Expired FR972902A (en) | 1941-06-06 | 1941-06-06 | Combination reflector for image projection devices |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR972902A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4020346A1 (en) * | 1990-06-22 | 1992-01-02 | Siemens Ag | Reflector for optical line scanner in imaging appts. - has window aligned with external reflection surface and spaced exit opening to provide two perpendicular beams |
US5217299A (en) * | 1990-09-04 | 1993-06-08 | Asahi Kogaku Kogyo Kabushiki Kaisha | Reflection type lighting apparatus |
-
1941
- 1941-06-06 FR FR972902D patent/FR972902A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4020346A1 (en) * | 1990-06-22 | 1992-01-02 | Siemens Ag | Reflector for optical line scanner in imaging appts. - has window aligned with external reflection surface and spaced exit opening to provide two perpendicular beams |
US5217299A (en) * | 1990-09-04 | 1993-06-08 | Asahi Kogaku Kogyo Kabushiki Kaisha | Reflection type lighting apparatus |
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