NL157115B - Belichtingsregelingsinrichting voor camera's met elektrisch bestuurde sluiter. - Google Patents

Belichtingsregelingsinrichting voor camera's met elektrisch bestuurde sluiter.

Info

Publication number
NL157115B
NL157115B NL7415735A NL7415735A NL157115B NL 157115 B NL157115 B NL 157115B NL 7415735 A NL7415735 A NL 7415735A NL 7415735 A NL7415735 A NL 7415735A NL 157115 B NL157115 B NL 157115B
Authority
NL
Netherlands
Prior art keywords
cameras
control device
exposure control
electrically controlled
controlled shutter
Prior art date
Application number
NL7415735A
Other languages
English (en)
Dutch (nl)
Other versions
NL7415735A (nl
Original Assignee
Asahi Optical Co Ltd
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 Asahi Optical Co Ltd filed Critical Asahi Optical Co Ltd
Publication of NL7415735A publication Critical patent/NL7415735A/xx
Publication of NL157115B publication Critical patent/NL157115B/xx

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
    • G03B7/091—Digital circuits
    • G03B7/093—Digital circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
NL7415735A 1973-12-05 1974-12-03 Belichtingsregelingsinrichting voor camera's met elektrisch bestuurde sluiter. NL157115B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13791773A JPS5087645A (Direct) 1973-12-05 1973-12-05

Publications (2)

Publication Number Publication Date
NL7415735A NL7415735A (nl) 1975-06-09
NL157115B true NL157115B (nl) 1978-06-15

Family

ID=15209692

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7415735A NL157115B (nl) 1973-12-05 1974-12-03 Belichtingsregelingsinrichting voor camera's met elektrisch bestuurde sluiter.

Country Status (4)

Country Link
JP (1) JPS5087645A (Direct)
FR (1) FR2254039B1 (Direct)
GB (1) GB1471970A (Direct)
NL (1) NL157115B (Direct)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345233A (en) 1976-10-05 1978-04-22 Asahi Optical Co Ltd Device for manually setting digital electric control camera
GB2090668B (en) * 1980-11-04 1984-10-31 Asahi Optical Co Ltd Aperture value control device utilizing a frequency signal from a flash unit on a camera
KR100236641B1 (ko) * 1994-05-16 2000-01-15 유무성 카메라의 연속 휘도 측정장치 및 그 제어방법

Also Published As

Publication number Publication date
JPS5087645A (Direct) 1975-07-14
GB1471970A (en) 1977-04-27
NL7415735A (nl) 1975-06-09
DE2457306B2 (de) 1977-01-13
FR2254039A1 (Direct) 1975-07-04
DE2457306A1 (de) 1975-06-12
FR2254039B1 (Direct) 1977-10-28

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: ASAHI KOGAKU