GB1465846A - Electronic shutter with memory function - Google Patents

Electronic shutter with memory function

Info

Publication number
GB1465846A
GB1465846A GB1568274A GB1568274A GB1465846A GB 1465846 A GB1465846 A GB 1465846A GB 1568274 A GB1568274 A GB 1568274A GB 1568274 A GB1568274 A GB 1568274A GB 1465846 A GB1465846 A GB 1465846A
Authority
GB
United Kingdom
Prior art keywords
capacitor
proportional
voltage
april
receive
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
Application number
GB1568274A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Original Assignee
Nippon Kogaku KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Kogaku KK filed Critical Nippon Kogaku KK
Publication of GB1465846A publication Critical patent/GB1465846A/en
Expired legal-status Critical Current

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
    • G03B7/08—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)
  • Shutters For Cameras (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Shutter-Related Mechanisms (AREA)
GB1568274A 1973-04-10 1974-04-09 Electronic shutter with memory function Expired GB1465846A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973042902U JPS5016933U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-04-10 1973-04-10

Publications (1)

Publication Number Publication Date
GB1465846A true GB1465846A (en) 1977-03-02

Family

ID=12648949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1568274A Expired GB1465846A (en) 1973-04-10 1974-04-09 Electronic shutter with memory function

Country Status (5)

Country Link
US (1) US3896456A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5016933U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2417170A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2225762B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1465846A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5177286A (en) * 1974-12-26 1976-07-05 Asahi Optical Co Ltd Roshutsuseigyosochi
JPS5177229A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-12-26 1976-07-05 Asahi Optical Co Ltd
JPS5184437U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-12-26 1976-07-07
GB1549689A (en) * 1975-07-28 1979-08-08 Nippon Kogaku Kk Voltage generating circuit
US4032801A (en) * 1975-10-10 1977-06-28 Honeywell Inc. Electromagnetic radiation intensity comparator apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025336B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1967-11-28 1975-08-22
SE354128B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1969-02-26 1973-02-26 Nippon Kogaku Kk

Also Published As

Publication number Publication date
FR2225762B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-12-17
JPS5016933U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-02-22
FR2225762A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-11-08
US3896456A (en) 1975-07-22
DE2417170A1 (de) 1974-10-31

Similar Documents

Publication Publication Date Title
GB1339622A (en) Electric shutter control circuit for a single-lens reflex camera
GB1481214A (en) Photographic camera
GB1465846A (en) Electronic shutter with memory function
GB1132771A (en) Photographic camera
GB1060248A (en) Improvements relating to photographic camera shutter mechanisms
GB1194393A (en) Improvements in and relating to Photographic Cameras
GB1311323A (en) Cameras
GB1284749A (en) Improvements in and relating to photographic cameras
GB1034395A (en) A cinematographic camera and a film-sensitivity control device therefor
GB1385075A (en) Exposure time computation circuit for cameras
GB1452814A (en) Cameras
GB1339212A (en) Function generator circuit
GB1458144A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB1455837A (en) Camera shutter control circuit
GB1190989A (en) Photographic Exposure Meter, and a Photographic Camera including the same
GB1065906A (en) Photographic objective
GB1335432A (en) Electronic exposure determining circuit and an electric shutter control system incorporating the exposure determining circuit
GB1497715A (en) Shutter control circuit
GB1321258A (en) Camera
GB1031771A (en) Improvements in and relating to photographic roll film cameras
GB1314609A (en) Photogrpahic apparatus
GB1253247A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB1006145A (en) An apparatus for automatically adjusting the exposure aperture in cameras
GB1377565A (en) Detachable viewfinder
FR2199409A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee