JPS5455471A - Range finder - Google Patents

Range finder

Info

Publication number
JPS5455471A
JPS5455471A JP12270877A JP12270877A JPS5455471A JP S5455471 A JPS5455471 A JP S5455471A JP 12270877 A JP12270877 A JP 12270877A JP 12270877 A JP12270877 A JP 12270877A JP S5455471 A JPS5455471 A JP S5455471A
Authority
JP
Japan
Prior art keywords
space filter
scanned
lens
optical axis
range finder
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.)
Pending
Application number
JP12270877A
Other languages
Japanese (ja)
Inventor
Yasuhiro Nanba
Nobuyuki Taniguchi
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP12270877A priority Critical patent/JPS5455471A/en
Priority to US05/950,517 priority patent/US4209241A/en
Publication of JPS5455471A publication Critical patent/JPS5455471A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Optical Distance (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To reduce the size of a range finder and to improve the detecting accuracy by providing a space filter which can be scanned in a photoelectrical manner.
CONSTITUTION: There is arranged between an objective camera lens 2 and a relay lens 4 on an optical axis X a space filter 3 of slit type which can be photoelectrically scanned and which is connected with a drive circuit 6. The light of an object 1 is selectively introduced into light receiving elements PD1 to PD4 through the space filter 3 which is scanned in the direction of arrow perpendicular to the optical axis X by the drive circuit 6. The discrepancy of being out of focus is detected by a signal processing circuit 7 and is indicated in an indicating circuit 8 so that it may control the drive motor M of the lens 2. And, the desired object can be attained by convertig the space filter from a mechanical one to a photoelectric one
COPYRIGHT: (C)1979,JPO&Japio
JP12270877A 1977-10-12 1977-10-12 Range finder Pending JPS5455471A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12270877A JPS5455471A (en) 1977-10-12 1977-10-12 Range finder
US05/950,517 US4209241A (en) 1977-10-12 1978-10-11 Photoelectric rangefinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12270877A JPS5455471A (en) 1977-10-12 1977-10-12 Range finder

Publications (1)

Publication Number Publication Date
JPS5455471A true JPS5455471A (en) 1979-05-02

Family

ID=14842634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12270877A Pending JPS5455471A (en) 1977-10-12 1977-10-12 Range finder

Country Status (1)

Country Link
JP (1) JPS5455471A (en)

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