GB467039A - Improvements in or relating to photo-electric exposure meters - Google Patents

Improvements in or relating to photo-electric exposure meters

Info

Publication number
GB467039A
GB467039A GB1006/36A GB100636A GB467039A GB 467039 A GB467039 A GB 467039A GB 1006/36 A GB1006/36 A GB 1006/36A GB 100636 A GB100636 A GB 100636A GB 467039 A GB467039 A GB 467039A
Authority
GB
United Kingdom
Prior art keywords
scale
mark
photo
indicator
meters
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
GB1006/36A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Publication of GB467039A publication Critical patent/GB467039A/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)
  • Optical Transform (AREA)

Abstract

467,039. Photo - electric exposure meters. ZEISS IKON AKT.-GES. Jan. 11, 1936, No. 1006. Convention date, Jan. 11, 1935. [Class 98 (i)] In meters of the type in which an indicator is brought by varying a resistance, into coincidence with a fixed mark, a scale is provided between the mark and the zero position of the indicator, the number on the scale at which the indicator comes to rest when it cannot be brought to the mark, indicating the multiplication factor for the exposure time. As shown, the meter has a fixed hub 8 having indicia for daylight and artificial light, a movable ring 6 bearing a scale of degrees Scheiner and a scale of stop-values, and a movable ring 7 bearing a scale of exposure times. The pointer and scale are visible in the window 2 of the meter.
GB1006/36A 1935-01-11 1936-01-11 Improvements in or relating to photo-electric exposure meters Expired GB467039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE467039X 1935-01-11

Publications (1)

Publication Number Publication Date
GB467039A true GB467039A (en) 1937-06-10

Family

ID=6540638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1006/36A Expired GB467039A (en) 1935-01-11 1936-01-11 Improvements in or relating to photo-electric exposure meters

Country Status (1)

Country Link
GB (1) GB467039A (en)

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