FR894527A - Improvements to focusing devices for photographic or cinematographic cameras - Google Patents
Improvements to focusing devices for photographic or cinematographic camerasInfo
- Publication number
- FR894527A FR894527A FR894527DA FR894527A FR 894527 A FR894527 A FR 894527A FR 894527D A FR894527D A FR 894527DA FR 894527 A FR894527 A FR 894527A
- Authority
- FR
- France
- Prior art keywords
- photographic
- focusing devices
- cinematographic cameras
- cinematographic
- cameras
- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/18—Focusing aids
- G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT894527X | 1942-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR894527A true FR894527A (en) | 1944-12-27 |
Family
ID=11331532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR894527D Expired FR894527A (en) | 1942-04-30 | 1943-05-06 | Improvements to focusing devices for photographic or cinematographic cameras |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR894527A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3152214A (en) * | 1962-02-19 | 1964-10-06 | Bausch & Lomb | Optical system for zoom type telescope having mirror and finder objectives |
US3475086A (en) * | 1966-02-10 | 1969-10-28 | D 150 Inc | Cinema system utilizing a deeply curved screen and a mask for providing an illusion |
-
1943
- 1943-05-06 FR FR894527D patent/FR894527A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3152214A (en) * | 1962-02-19 | 1964-10-06 | Bausch & Lomb | Optical system for zoom type telescope having mirror and finder objectives |
US3475086A (en) * | 1966-02-10 | 1969-10-28 | D 150 Inc | Cinema system utilizing a deeply curved screen and a mask for providing an illusion |
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