BE386102A - - Google Patents
Info
- Publication number
- BE386102A BE386102A BE386102DA BE386102A BE 386102 A BE386102 A BE 386102A BE 386102D A BE386102D A BE 386102DA BE 386102 A BE386102 A BE 386102A
- Authority
- BE
- Belgium
- Prior art keywords
- diaphragm
- combination
- photoelectric cell
- intensity
- amplifier
- Prior art date
Links
- 238000005286 illumination Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims 1
- 229910052711 selenium Inorganic materials 0.000 claims 1
- 239000011669 selenium Substances 0.000 claims 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000005557 antagonist Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 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
- G03B7/085—Analogue circuits for control of aperture
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Diaphragms For Cameras (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE386102A true BE386102A (en:Method) |
Family
ID=54825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE386102D BE386102A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE386102A (en:Method) |
-
0
- BE BE386102D patent/BE386102A/fr unknown
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