GB1300914A - Exposure meter - Google Patents

Exposure meter

Info

Publication number
GB1300914A
GB1300914A GB290670A GB290670A GB1300914A GB 1300914 A GB1300914 A GB 1300914A GB 290670 A GB290670 A GB 290670A GB 290670 A GB290670 A GB 290670A GB 1300914 A GB1300914 A GB 1300914A
Authority
GB
United Kingdom
Prior art keywords
screen
area
exposure
light
exposure meter
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
GB290670A
Inventor
Fritz Lindner
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.)
Pentacon GmbH Foto und Feinwerktechnik
Original Assignee
Pentacon Dresden VEB
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 Pentacon Dresden VEB filed Critical Pentacon Dresden VEB
Priority to GB290670A priority Critical patent/GB1300914A/en
Publication of GB1300914A publication Critical patent/GB1300914A/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
    • G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Indicating Measured Values (AREA)

Abstract

1300914 Exposure regulating devices KOMBINAT PENTACON DRESDEN KAMERA-UNI KINOWERKE VEB 21 Jan 1970 2906/70 Heading G2A Correct exposure is set by a light-sensitive meter which includes differently coloured lamps 3 and 9 on either side of light barrier 10 and adjacent a transparent screen 11. When the screen 11 is observed, a white or yellow area of equal size to red and green areas. On either side is produced by adjustment of a diaphragm 5 and/ or a potentiometer 7 coupled with a shutter speed control. Battery voltage is indicated by symbols viewable on an area of screen 11 which is illuminated with equal intensity.
GB290670A 1970-01-21 1970-01-21 Exposure meter Expired GB1300914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB290670A GB1300914A (en) 1970-01-21 1970-01-21 Exposure meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB290670A GB1300914A (en) 1970-01-21 1970-01-21 Exposure meter

Publications (1)

Publication Number Publication Date
GB1300914A true GB1300914A (en) 1972-12-29

Family

ID=9748288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB290670A Expired GB1300914A (en) 1970-01-21 1970-01-21 Exposure meter

Country Status (1)

Country Link
GB (1) GB1300914A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051503A (en) * 1974-09-30 1977-09-27 Asahi Kogaku Kogyo Kabushiki Kaisha Exposure display device for a single lens reflex camera
US4315674A (en) * 1979-05-23 1982-02-16 Canon Kabushiki Kaisha Focal point detecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051503A (en) * 1974-09-30 1977-09-27 Asahi Kogaku Kogyo Kabushiki Kaisha Exposure display device for a single lens reflex camera
US4315674A (en) * 1979-05-23 1982-02-16 Canon Kabushiki Kaisha Focal point detecting system

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Legal Events

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