JPH0140968B2 - - Google Patents
Info
- Publication number
- JPH0140968B2 JPH0140968B2 JP56208996A JP20899681A JPH0140968B2 JP H0140968 B2 JPH0140968 B2 JP H0140968B2 JP 56208996 A JP56208996 A JP 56208996A JP 20899681 A JP20899681 A JP 20899681A JP H0140968 B2 JPH0140968 B2 JP H0140968B2
- Authority
- JP
- Japan
- Prior art keywords
- vane
- photodetector
- field
- optical path
- camera
- 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
- 230000003287 optical effect Effects 0.000 claims description 87
- 230000004044 response Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 15
- 230000005855 radiation Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 description 11
- 238000007667 floating Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000002123 temporal effect Effects 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
- G03B7/099—Arrangement of photoelectric elements in or on the camera
- G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
-
- 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
- G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
- Stroboscope Apparatuses (AREA)
- Shutters For Cameras (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/219,930 US4345828A (en) | 1980-12-24 | 1980-12-24 | Light detecting apparatus for photographic camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57164720A JPS57164720A (en) | 1982-10-09 |
| JPH0140968B2 true JPH0140968B2 (https=) | 1989-09-01 |
Family
ID=22821311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56208996A Granted JPS57164720A (en) | 1980-12-24 | 1981-12-23 | Subject light detector for camera |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4345828A (https=) |
| JP (1) | JPS57164720A (https=) |
| CA (1) | CA1161683A (https=) |
| DE (1) | DE3151129C2 (https=) |
| FR (1) | FR2496910B1 (https=) |
| GB (1) | GB2090424B (https=) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484808A (en) * | 1982-11-01 | 1984-11-27 | Polaroid Corporation | Method of and apparatus for controlling scene radiation |
| US4445762A (en) * | 1982-12-28 | 1984-05-01 | Polaroid Corporation | Encoded shutter blade apparatus |
| US4719487A (en) * | 1986-10-20 | 1988-01-12 | Polaroid Corporation | Camera having tiltable photocell lens assembly |
| JP2515036Y2 (ja) * | 1990-01-19 | 1996-10-23 | 旭光学工業株式会社 | カメラの測光装置 |
| JP2673146B2 (ja) * | 1992-08-04 | 1997-11-05 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 電子フラッシュの発光タイミングを決定する方法及びカメラシステム |
| US7978260B2 (en) * | 2003-09-15 | 2011-07-12 | Senshin Capital, Llc | Electronic camera and method with fill flash function |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3270638A (en) * | 1963-07-22 | 1966-09-06 | Eastman Kodak Co | Photometric system |
| US4147418A (en) * | 1977-10-11 | 1979-04-03 | Polaroid Corporation | Photographic exposure control system with independent ambient and artificial illumination control modes |
| US4173400A (en) * | 1978-02-02 | 1979-11-06 | Polaroid Corporation | Photographic camera apparatus |
| US4255031A (en) * | 1979-01-02 | 1981-03-10 | Polaroid Corporation | Photographic camera with dual purpose light indicator |
| DE3049435A1 (de) * | 1979-12-31 | 1981-10-15 | Polaroid Corp., 02139 Cambridge, Mass. | Fotografischer apparat |
| US4315677A (en) * | 1980-07-03 | 1982-02-16 | Polaroid Corporation | Calibration arrangement for exposure control system |
| US4297016A (en) * | 1980-07-07 | 1981-10-27 | Polaroid Corporation | Scanning shutter blade arrangement with dynamic apertures for ambient and flash exposures |
| CA1170884A (en) * | 1980-10-06 | 1984-07-17 | Bruce K. Johnson | Photographic camera |
-
1980
- 1980-12-24 US US06/219,930 patent/US4345828A/en not_active Expired - Lifetime
-
1981
- 1981-11-10 CA CA000389789A patent/CA1161683A/en not_active Expired
- 1981-12-21 GB GB8138428A patent/GB2090424B/en not_active Expired
- 1981-12-22 FR FR8123938A patent/FR2496910B1/fr not_active Expired
- 1981-12-23 JP JP56208996A patent/JPS57164720A/ja active Granted
- 1981-12-23 DE DE3151129A patent/DE3151129C2/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US4345828A (en) | 1982-08-24 |
| GB2090424B (en) | 1984-10-24 |
| GB2090424A (en) | 1982-07-07 |
| FR2496910A1 (fr) | 1982-06-25 |
| CA1161683A (en) | 1984-02-07 |
| JPS57164720A (en) | 1982-10-09 |
| DE3151129A1 (de) | 1982-07-29 |
| FR2496910B1 (fr) | 1986-03-28 |
| DE3151129C2 (de) | 1994-05-19 |
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