JPH0516563B2 - - Google Patents

Info

Publication number
JPH0516563B2
JPH0516563B2 JP25749784A JP25749784A JPH0516563B2 JP H0516563 B2 JPH0516563 B2 JP H0516563B2 JP 25749784 A JP25749784 A JP 25749784A JP 25749784 A JP25749784 A JP 25749784A JP H0516563 B2 JPH0516563 B2 JP H0516563B2
Authority
JP
Japan
Prior art keywords
light
receiving element
light receiving
reflected
subject
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 - Lifetime
Application number
JP25749784A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61137117A (ja
Inventor
Masamichi Toyama
Susumu Kozuki
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 JP25749784A priority Critical patent/JPS61137117A/ja
Priority to US06/805,986 priority patent/US4694149A/en
Publication of JPS61137117A publication Critical patent/JPS61137117A/ja
Publication of JPH0516563B2 publication Critical patent/JPH0516563B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • 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
    • G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4816—Constructional features, e.g. arrangements of optical elements of receivers alone
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane
    • G02B7/343—Systems for automatic generation of focusing signals using different areas in a pupil plane using light beam separating prisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP25749784A 1984-12-07 1984-12-07 焦点検出装置 Granted JPS61137117A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP25749784A JPS61137117A (ja) 1984-12-07 1984-12-07 焦点検出装置
US06/805,986 US4694149A (en) 1984-12-07 1985-12-05 Focus adjusting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25749784A JPS61137117A (ja) 1984-12-07 1984-12-07 焦点検出装置

Publications (2)

Publication Number Publication Date
JPS61137117A JPS61137117A (ja) 1986-06-24
JPH0516563B2 true JPH0516563B2 (enrdf_load_stackoverflow) 1993-03-04

Family

ID=17307108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25749784A Granted JPS61137117A (ja) 1984-12-07 1984-12-07 焦点検出装置

Country Status (1)

Country Link
JP (1) JPS61137117A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10704904B2 (en) * 2018-03-20 2020-07-07 Pixart Imaging Inc. Distance detection device

Also Published As

Publication number Publication date
JPS61137117A (ja) 1986-06-24

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