FR2266871A1 - Distance measuring device for objective lens - has photo-resistor in light path connected in series - Google Patents

Distance measuring device for objective lens - has photo-resistor in light path connected in series

Info

Publication number
FR2266871A1
FR2266871A1 FR7412179A FR7412179A FR2266871A1 FR 2266871 A1 FR2266871 A1 FR 2266871A1 FR 7412179 A FR7412179 A FR 7412179A FR 7412179 A FR7412179 A FR 7412179A FR 2266871 A1 FR2266871 A1 FR 2266871A1
Authority
FR
France
Prior art keywords
photoelectric
elements
objective lens
photo
resistor
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.)
Granted
Application number
FR7412179A
Other languages
English (en)
French (fr)
Other versions
FR2266871B1 (OSRAM
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to FR7412179A priority Critical patent/FR2266871A1/fr
Publication of FR2266871A1 publication Critical patent/FR2266871A1/fr
Application granted granted Critical
Publication of FR2266871B1 publication Critical patent/FR2266871B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/32—Measuring distances in line of sight; Optical rangefinders by focusing the object, e.g. on a ground glass screen

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Focusing (AREA)
FR7412179A 1974-04-05 1974-04-05 Distance measuring device for objective lens - has photo-resistor in light path connected in series Granted FR2266871A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7412179A FR2266871A1 (en) 1974-04-05 1974-04-05 Distance measuring device for objective lens - has photo-resistor in light path connected in series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7412179A FR2266871A1 (en) 1974-04-05 1974-04-05 Distance measuring device for objective lens - has photo-resistor in light path connected in series

Publications (2)

Publication Number Publication Date
FR2266871A1 true FR2266871A1 (en) 1975-10-31
FR2266871B1 FR2266871B1 (OSRAM) 1976-12-17

Family

ID=9137363

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7412179A Granted FR2266871A1 (en) 1974-04-05 1974-04-05 Distance measuring device for objective lens - has photo-resistor in light path connected in series

Country Status (1)

Country Link
FR (1) FR2266871A1 (OSRAM)

Also Published As

Publication number Publication date
FR2266871B1 (OSRAM) 1976-12-17

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