GB1427988A - Photographic exposure meter - Google Patents

Photographic exposure meter

Info

Publication number
GB1427988A
GB1427988A GB2343973A GB2343973A GB1427988A GB 1427988 A GB1427988 A GB 1427988A GB 2343973 A GB2343973 A GB 2343973A GB 2343973 A GB2343973 A GB 2343973A GB 1427988 A GB1427988 A GB 1427988A
Authority
GB
United Kingdom
Prior art keywords
scale
meter
exposure time
exposure
wedge
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
GB2343973A
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.)
Gossen GmbH
Original Assignee
Gossen GmbH
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 Gossen GmbH filed Critical Gossen GmbH
Publication of GB1427988A publication Critical patent/GB1427988A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

1427988 Exposure meters GOSSEN GmbH 16 May 1973 [1 Feb 1973] 23439/73 Heading G2X An exposure meter comprises a movable pointer 10 which is set according to film speed, on exposure time scale 9 which is adjusted to set the required exposure time against pointer 10, and a wedge 7 coupled for movement with the scale 9 and arranged in the light path of a photo-conductor 1 so that a meter 5 indicates the required f-value on a scale 6 . In alternatives the exposure time and f value scales are intercharged, and film speed is set in by adjusting the length of the coupling 8 between wedge 7 and scale 9. The meter may be built into a camera.
GB2343973A 1973-02-01 1973-05-16 Photographic exposure meter Expired GB1427988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732304826 DE2304826A1 (en) 1973-02-01 1973-02-01 EXPOSURE METER WITH LARGE SCOPE

Publications (1)

Publication Number Publication Date
GB1427988A true GB1427988A (en) 1976-03-10

Family

ID=5870576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2343973A Expired GB1427988A (en) 1973-02-01 1973-05-16 Photographic exposure meter

Country Status (3)

Country Link
JP (1) JPS49107784A (en)
DE (1) DE2304826A1 (en)
GB (1) GB1427988A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260256A (en) * 1978-11-17 1981-04-07 Eastman Kodak Company Apparatus for measuring illuminance
DE3236772C2 (en) * 1982-10-05 1994-08-04 Gossen Gmbh Light meter
DE3236773A1 (en) * 1982-10-05 1984-04-05 Gossen Gmbh, 8520 Erlangen Exposure meter
DE102015122911A1 (en) * 2015-12-29 2017-07-13 Schott Ag Filter component with transformed transmission curve

Also Published As

Publication number Publication date
DE2304826A1 (en) 1974-08-08
JPS49107784A (en) 1974-10-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees