FR1055072A - Perfectionnements aux projecteurs - Google Patents
Perfectionnements aux projecteursInfo
- Publication number
- FR1055072A FR1055072A FR1055072DA FR1055072A FR 1055072 A FR1055072 A FR 1055072A FR 1055072D A FR1055072D A FR 1055072DA FR 1055072 A FR1055072 A FR 1055072A
- Authority
- FR
- France
- Prior art keywords
- refinements
- projector
- projector refinements
- 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
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1055072T | 1952-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1055072A true FR1055072A (fr) | 1954-02-16 |
Family
ID=9596723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1055072D Expired FR1055072A (fr) | 1952-04-22 | 1952-04-22 | Perfectionnements aux projecteurs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1055072A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3283142A (en) * | 1963-07-01 | 1966-11-01 | Miller L Freeman | Light reflectors |
EP0509630A2 (fr) * | 1991-02-21 | 1992-10-21 | DOLGOFF, Eugene | Un système de projection à valve optique à haut rendement |
-
1952
- 1952-04-22 FR FR1055072D patent/FR1055072A/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3283142A (en) * | 1963-07-01 | 1966-11-01 | Miller L Freeman | Light reflectors |
EP0509630A2 (fr) * | 1991-02-21 | 1992-10-21 | DOLGOFF, Eugene | Un système de projection à valve optique à haut rendement |
EP0509630A3 (en) * | 1991-02-21 | 1993-07-14 | Eugene Dolgoff | A high efficiency light valve projection system |
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