JPS643241B2 - - Google Patents

Info

Publication number
JPS643241B2
JPS643241B2 JP57003135A JP313582A JPS643241B2 JP S643241 B2 JPS643241 B2 JP S643241B2 JP 57003135 A JP57003135 A JP 57003135A JP 313582 A JP313582 A JP 313582A JP S643241 B2 JPS643241 B2 JP S643241B2
Authority
JP
Japan
Prior art keywords
distance
lens
light
ring
distance measuring
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
JP57003135A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58120227A (ja
Inventor
Masaaki Morizumi
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP57003135A priority Critical patent/JPS58120227A/ja
Priority to US06/454,714 priority patent/US4459004A/en
Publication of JPS58120227A publication Critical patent/JPS58120227A/ja
Publication of JPS643241B2 publication Critical patent/JPS643241B2/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
    • G02B7/34—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)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP57003135A 1982-01-12 1982-01-12 オ−トフオ−カスカメラ Granted JPS58120227A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57003135A JPS58120227A (ja) 1982-01-12 1982-01-12 オ−トフオ−カスカメラ
US06/454,714 US4459004A (en) 1982-01-12 1982-12-30 Automatic focusing camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57003135A JPS58120227A (ja) 1982-01-12 1982-01-12 オ−トフオ−カスカメラ

Publications (2)

Publication Number Publication Date
JPS58120227A JPS58120227A (ja) 1983-07-18
JPS643241B2 true JPS643241B2 (US20100012521A1-20100121-C00001.png) 1989-01-20

Family

ID=11548904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57003135A Granted JPS58120227A (ja) 1982-01-12 1982-01-12 オ−トフオ−カスカメラ

Country Status (2)

Country Link
US (1) US4459004A (US20100012521A1-20100121-C00001.png)
JP (1) JPS58120227A (US20100012521A1-20100121-C00001.png)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32959E (en) * 1984-05-21 1989-06-20 Fuji Photo Film Co., Ltd. Automatic focusing apparatus
JPH067218B2 (ja) * 1984-05-21 1994-01-26 富士写真フイルム株式会社 オ−トフオ−カス装置
JPS61251809A (ja) * 1985-05-01 1986-11-08 Hitachi Ltd 自動焦点調節装置
JPS6375717A (ja) * 1986-09-19 1988-04-06 Hitachi Ltd 自動合焦装置
US4843415A (en) * 1986-09-22 1989-06-27 Minolta Camera Kabushiki Kaisha Automatic focus detection system
CA1331429C (en) * 1988-06-03 1994-08-16 Hiroshi Nomura Zoom lens barrel and camera incorporating such barrel
JP2888563B2 (ja) * 1989-10-27 1999-05-10 旭光学工業株式会社 カメラの測距装置
JP3108697B2 (ja) * 1991-04-25 2000-11-13 旭光学工業株式会社 焦点検出装置
US5206498A (en) * 1991-06-07 1993-04-27 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting apparatus having variable power condenser lens
JP3199774B2 (ja) * 1991-06-26 2001-08-20 旭光学工業株式会社 焦点検出装置
JP3174551B2 (ja) * 1998-06-11 2001-06-11 旭光学工業株式会社 焦点調節レンズ位置検出装置
US7149420B1 (en) * 2004-10-25 2006-12-12 Magnachip Semiconductor, Inc. Auto-focusing lens with progressive variable focal element

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435744A (en) * 1966-05-31 1969-04-01 Eastman Kodak Co Automatic focusing system
US3442193A (en) * 1966-05-31 1969-05-06 Eastman Kodak Co Automatic focusing system

Also Published As

Publication number Publication date
JPS58120227A (ja) 1983-07-18
US4459004A (en) 1984-07-10

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