GB499535A - An indicating device for the lens diaphragm of cinematographic cameras - Google Patents
An indicating device for the lens diaphragm of cinematographic camerasInfo
- Publication number
- GB499535A GB499535A GB32807/37A GB3280737A GB499535A GB 499535 A GB499535 A GB 499535A GB 32807/37 A GB32807/37 A GB 32807/37A GB 3280737 A GB3280737 A GB 3280737A GB 499535 A GB499535 A GB 499535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- scales
- pointer
- nov
- photo
- 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
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/04—Control effected by hand adjustment of a member that senses indication of a pointer of a built- in light-sensitive device, e.g. by restoring point to a fixed associated reference mark
- G03B7/06—Control effected by hand adjustment of a member that senses indication of a pointer of a built- in light-sensitive device, e.g. by restoring point to a fixed associated reference mark by a follow-up movement of an associated reference mark to the pointer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
Abstract
499,535. Photographic cameras with photo-electric exposure meters. LAMPENUND METALLWARENFABRIKEN R. DITMAR GEB. BRUNNER AKT.-GES. Nov. 27, 1937, No. 32807. Convention date, Nov. 28, 1936. [Class 98 (i)] Two scales of diaphragm settings are visible in the eyepiece of the viewfinder of a photographic camera. The tirst, 6, co-operates with a pointer 8, coupled to the diaphragm setting system 10, 11, 12. The other, 5, co-operates with the pointer 7 of a photo-electric exposure meter 3 actuated by a cell 1 having an adjusting resistance 2 in its circuit. The diaphragm is adjusted until the readings on the two scales agree. A series of lines connecting corresponding graduations may be provided to facilitate this adjust. ment. In an alternative form, the fixed. scale 6 is replaced by a circular scale attached. directly to the diaphragm setting ring.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT499535X | 1936-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB499535A true GB499535A (en) | 1939-01-25 |
Family
ID=3675298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32807/37A Expired GB499535A (en) | 1936-11-28 | 1937-11-27 | An indicating device for the lens diaphragm of cinematographic cameras |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB499535A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE864198C (en) * | 1940-02-13 | 1953-01-22 | Bosch Gmbh Robert | Cinema camera |
-
1937
- 1937-11-27 GB GB32807/37A patent/GB499535A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE864198C (en) * | 1940-02-13 | 1953-01-22 | Bosch Gmbh Robert | Cinema camera |
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