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JPS52138924A - Focal detector - Google Patents

Focal detector

Info

Publication number
JPS52138924A
JPS52138924A JP5566176A JP5566176A JPS52138924A JP S52138924 A JPS52138924 A JP S52138924A JP 5566176 A JP5566176 A JP 5566176A JP 5566176 A JP5566176 A JP 5566176A JP S52138924 A JPS52138924 A JP S52138924A
Authority
JP
Japan
Prior art keywords
detector
focal
focal detector
dach
penta
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
JP5566176A
Other languages
Japanese (ja)
Inventor
Takehiko Hamaguchi
Norio Saito
Michio Yagi
Kunio Nakajima
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP5566176A priority Critical patent/JPS52138924A/en
Priority to GB1964177A priority patent/GB1578367A/en
Publication of JPS52138924A publication Critical patent/JPS52138924A/en
Pending 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
    • G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To simplify the function with a high precision by providing a branch optical derive consisting of a condenser lens at the middle position between focal plate and penta-dach-prism, and arranging an optical device for the formation of an image and a detector in the surroundings thereof.
COPYRIGHT: (C)1977,JPO&Japio
JP5566176A 1976-05-15 1976-05-15 Focal detector Pending JPS52138924A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP5566176A JPS52138924A (en) 1976-05-15 1976-05-15 Focal detector
GB1964177A GB1578367A (en) 1976-05-15 1977-05-10 Camera incorporating focussing means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5566176A JPS52138924A (en) 1976-05-15 1976-05-15 Focal detector

Publications (1)

Publication Number Publication Date
JPS52138924A true JPS52138924A (en) 1977-11-19

Family

ID=13005017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5566176A Pending JPS52138924A (en) 1976-05-15 1976-05-15 Focal detector

Country Status (2)

Country Link
JP (1) JPS52138924A (en)
GB (1) GB1578367A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155331A (en) * 1979-05-23 1980-12-03 Canon Inc Focus detector
JPS58100809A (en) * 1981-12-12 1983-06-15 Canon Inc Optical system for focusing detection
JPS58106511A (en) * 1981-12-19 1983-06-24 Canon Inc Focusing detecting optical system
JPS597415U (en) * 1982-07-07 1984-01-18 オリンパス光学工業株式会社 Focus detection device
JPS62103011U (en) * 1986-06-26 1987-07-01
EP2146500A2 (en) 2008-07-17 2010-01-20 Canon Kabushiki Kaisha Phase difference detection device, imaging apparatus, phase difference detection method
US8477233B2 (en) 2008-10-30 2013-07-02 Canon Kabushiki Kaisha Image capturing apparatus
US8675121B2 (en) 2008-10-30 2014-03-18 Canon Kabushiki Kaisha Camera and camera system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4849782A (en) * 1985-06-28 1989-07-18 Canon Kabushiki Kaisha Focus detecting device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155331A (en) * 1979-05-23 1980-12-03 Canon Inc Focus detector
JPS6233564B2 (en) * 1979-05-23 1987-07-21 Canon Kk
JPS58100809A (en) * 1981-12-12 1983-06-15 Canon Inc Optical system for focusing detection
JPH0141963B2 (en) * 1981-12-12 1989-09-08 Canon Kk
JPS58106511A (en) * 1981-12-19 1983-06-24 Canon Inc Focusing detecting optical system
JPS597415U (en) * 1982-07-07 1984-01-18 オリンパス光学工業株式会社 Focus detection device
JPH0136162Y2 (en) * 1982-07-07 1989-11-02
JPS62103011U (en) * 1986-06-26 1987-07-01
EP2146500A2 (en) 2008-07-17 2010-01-20 Canon Kabushiki Kaisha Phase difference detection device, imaging apparatus, phase difference detection method
US8149324B2 (en) 2008-07-17 2012-04-03 Canon Kabushiki Kaisha Phase difference detection device, imaging apparatus, phase difference detection method
US8477233B2 (en) 2008-10-30 2013-07-02 Canon Kabushiki Kaisha Image capturing apparatus
US8675121B2 (en) 2008-10-30 2014-03-18 Canon Kabushiki Kaisha Camera and camera system

Also Published As

Publication number Publication date
GB1578367A (en) 1980-11-05

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