GB1417044A - Exposure control mechanism - Google Patents
Exposure control mechanismInfo
- Publication number
- GB1417044A GB1417044A GB1690073A GB1690073A GB1417044A GB 1417044 A GB1417044 A GB 1417044A GB 1690073 A GB1690073 A GB 1690073A GB 1690073 A GB1690073 A GB 1690073A GB 1417044 A GB1417044 A GB 1417044A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control mechanism
- exposure control
- exposure
- control
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/58—Means for varying duration of "open" period of shutter
-
- 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
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/081—Analogue circuits
- G03B7/085—Analogue circuits for control of aperture
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shutters For Cameras (AREA)
- Exposure Control For Cameras (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24580072A | 1972-04-21 | 1972-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1417044A true GB1417044A (en) | 1975-12-10 |
Family
ID=22928131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1690073A Expired GB1417044A (en) | 1972-04-21 | 1973-04-09 | Exposure control mechanism |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5340448B2 (en) |
CA (1) | CA991465A (en) |
DE (1) | DE2318510C2 (en) |
FR (1) | FR2181312A5 (en) |
GB (1) | GB1417044A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5117159B2 (en) * | 1972-01-25 | 1976-05-31 | ||
JPS50139729A (en) * | 1974-04-24 | 1975-11-08 | ||
US3942183A (en) * | 1974-07-02 | 1976-03-02 | Polaroid Corporation | Camera with pivoting blades |
US3995295A (en) * | 1975-08-28 | 1976-11-30 | Polaroid Corporation | Electro-mechanical shutter system having mechanical latch |
JPS5449128A (en) * | 1977-09-27 | 1979-04-18 | Seiko Koki Kk | Electromagnetic drive apparatus of shutter for camera |
JPS5796425U (en) * | 1980-12-04 | 1982-06-14 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3641889A (en) * | 1970-09-02 | 1972-02-15 | Polaroid Corp | Exposure control system |
JPS4817321B1 (en) * | 1970-09-25 | 1973-05-29 |
-
1973
- 1973-03-09 CA CA165,738A patent/CA991465A/en not_active Expired
- 1973-04-09 GB GB1690073A patent/GB1417044A/en not_active Expired
- 1973-04-12 FR FR7313281A patent/FR2181312A5/fr not_active Expired
- 1973-04-12 DE DE2318510A patent/DE2318510C2/en not_active Expired
- 1973-04-19 JP JP4462673A patent/JPS5340448B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5340448B2 (en) | 1978-10-27 |
DE2318510A1 (en) | 1973-10-31 |
CA991465A (en) | 1976-06-22 |
JPS4922120A (en) | 1974-02-27 |
FR2181312A5 (en) | 1973-11-30 |
DE2318510C2 (en) | 1983-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |