JPH0339283B2 - - Google Patents

Info

Publication number
JPH0339283B2
JPH0339283B2 JP10317983A JP10317983A JPH0339283B2 JP H0339283 B2 JPH0339283 B2 JP H0339283B2 JP 10317983 A JP10317983 A JP 10317983A JP 10317983 A JP10317983 A JP 10317983A JP H0339283 B2 JPH0339283 B2 JP H0339283B2
Authority
JP
Japan
Prior art keywords
distance measurement
focus
signal
light
determined
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
JP10317983A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59228209A (ja
Inventor
Takashi Amikura
Akihiro Fujiwara
Masamichi Toyama
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 JP10317983A priority Critical patent/JPS59228209A/ja
Priority to DE3416072A priority patent/DE3416072C2/de
Priority to GB08411004A priority patent/GB2141000B/en
Publication of JPS59228209A publication Critical patent/JPS59228209A/ja
Priority to US06/913,628 priority patent/US4755662A/en
Publication of JPH0339283B2 publication Critical patent/JPH0339283B2/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
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/46—Indirect determination of position data

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP10317983A 1983-04-28 1983-06-09 自動焦点検出装置 Granted JPS59228209A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP10317983A JPS59228209A (ja) 1983-06-09 1983-06-09 自動焦点検出装置
DE3416072A DE3416072C2 (de) 1983-04-28 1984-04-30 Automatische Scharfeinstellungsdetektoreinrichtung
GB08411004A GB2141000B (en) 1983-04-28 1984-04-30 Automatic focus
US06/913,628 US4755662A (en) 1983-04-28 1986-09-30 Automatic focus detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10317983A JPS59228209A (ja) 1983-06-09 1983-06-09 自動焦点検出装置

Publications (2)

Publication Number Publication Date
JPS59228209A JPS59228209A (ja) 1984-12-21
JPH0339283B2 true JPH0339283B2 (enrdf_load_html_response) 1991-06-13

Family

ID=14347282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10317983A Granted JPS59228209A (ja) 1983-04-28 1983-06-09 自動焦点検出装置

Country Status (1)

Country Link
JP (1) JPS59228209A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0789172B2 (ja) * 1986-10-04 1995-09-27 キヤノン株式会社 自動焦点検出装置

Also Published As

Publication number Publication date
JPS59228209A (ja) 1984-12-21

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