GB1295578A - - Google Patents
Info
- Publication number
- GB1295578A GB1295578A GB1295578DA GB1295578A GB 1295578 A GB1295578 A GB 1295578A GB 1295578D A GB1295578D A GB 1295578DA GB 1295578 A GB1295578 A GB 1295578A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photo
- brightness
- indication
- electric element
- providing
- 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
- 101100220616 Caenorhabditis elegans chk-2 gene Proteins 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
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
- G03B7/08—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
- G03B7/083—Analogue circuits for control of exposure time
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1147070 | 1970-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1295578A true GB1295578A (enExample) | 1972-11-08 |
Family
ID=11778949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1295578D Expired GB1295578A (enExample) | 1970-02-12 | 1971-04-19 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3741087A (enExample) |
| FR (1) | FR2083066A5 (enExample) |
| GB (1) | GB1295578A (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809031A (en) * | 1986-12-11 | 1989-02-28 | Ricoh Company, Ltd. | Photometer for use in a camera |
-
1971
- 1971-02-09 US US00113840A patent/US3741087A/en not_active Expired - Lifetime
- 1971-02-10 FR FR7104402A patent/FR2083066A5/fr not_active Expired
- 1971-04-19 GB GB1295578D patent/GB1295578A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2083066A5 (enExample) | 1971-12-10 |
| US3741087A (en) | 1973-06-26 |
| DE2106410A1 (de) | 1971-09-23 |
| DE2106410B2 (de) | 1975-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |