DE3784231T2 - Verfahren und vorrichtung zur beruehrungslosen automatischen fokussierung. - Google Patents

Verfahren und vorrichtung zur beruehrungslosen automatischen fokussierung.

Info

Publication number
DE3784231T2
DE3784231T2 DE8787311393T DE3784231T DE3784231T2 DE 3784231 T2 DE3784231 T2 DE 3784231T2 DE 8787311393 T DE8787311393 T DE 8787311393T DE 3784231 T DE3784231 T DE 3784231T DE 3784231 T2 DE3784231 T2 DE 3784231T2
Authority
DE
Germany
Prior art keywords
laser beam
optical axis
objective lens
reflected
focusing
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 - Fee Related
Application number
DE8787311393T
Other languages
German (de)
English (en)
Other versions
DE3784231D1 (de
Inventor
Katushige Nakamura
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.)
Mitaka Kohki Co Ltd
Original Assignee
Mitaka Kohki 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 Mitaka Kohki Co Ltd filed Critical Mitaka Kohki Co Ltd
Application granted granted Critical
Publication of DE3784231D1 publication Critical patent/DE3784231D1/de
Publication of DE3784231T2 publication Critical patent/DE3784231T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • 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)
  • Automatic Focus Adjustment (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)
DE8787311393T 1986-12-25 1987-12-23 Verfahren und vorrichtung zur beruehrungslosen automatischen fokussierung. Expired - Fee Related DE3784231T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61308029A JPS63163313A (ja) 1986-12-25 1986-12-25 非接触自動焦点位置合わせ装置

Publications (2)

Publication Number Publication Date
DE3784231D1 DE3784231D1 (de) 1993-03-25
DE3784231T2 true DE3784231T2 (de) 1993-06-03

Family

ID=17976030

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787311393T Expired - Fee Related DE3784231T2 (de) 1986-12-25 1987-12-23 Verfahren und vorrichtung zur beruehrungslosen automatischen fokussierung.

Country Status (5)

Country Link
US (1) US4843228A (enExample)
EP (1) EP0273717B1 (enExample)
JP (1) JPS63163313A (enExample)
KR (1) KR940002356B1 (enExample)
DE (1) DE3784231T2 (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5061062A (en) * 1990-07-02 1991-10-29 General Electric Company Focus spot size controller for a variable depth range camera
DE4131737C2 (de) * 1991-09-24 1997-05-07 Zeiss Carl Fa Autofokus-Anordnung für ein Stereomikroskop
JPH0812046B2 (ja) * 1993-05-24 1996-02-07 三鷹光器株式会社 二段検出式非接触位置決め装置
US5912447A (en) * 1997-01-14 1999-06-15 United Parcel Service Of America, Inc. Concentric optical path equalizer with radially moving mirrors
JP3019835B2 (ja) * 1998-04-22 2000-03-13 日本電気株式会社 焦点検出装置
EP1031825B1 (en) * 1999-02-26 2006-06-14 Yokogawa Electric Corporation Double pass monochromator
SE521173C2 (sv) * 1998-09-17 2003-10-07 Spectra Prec Ab Elektronisk distansmätanordning
US6486457B1 (en) * 1999-10-07 2002-11-26 Agilent Technologies, Inc. Apparatus and method for autofocus
JP3881498B2 (ja) * 2000-05-25 2007-02-14 ペンタックス株式会社 光波測距儀
AUPR183600A0 (en) * 2000-12-01 2001-01-04 Sci.com Imaging Australia Pty Ltd Lens assembly
DE10124433A1 (de) * 2001-05-18 2002-11-21 Bosch Gmbh Robert Vorrichtung zur optischen Distanzmessung
JP3825701B2 (ja) * 2001-06-07 2006-09-27 ペンタックス株式会社 測量機の光軸自動調整装置
JP4121803B2 (ja) * 2002-08-08 2008-07-23 株式会社トプコン 光波距離測定装置
JP2006308709A (ja) * 2005-04-27 2006-11-09 Tohoku Univ 顕微鏡ステージ、および、焦点位置計測装置と共焦点顕微鏡システム
KR100939679B1 (ko) * 2007-12-11 2010-02-03 (주)가하 자동 초점 조절 장치 및 그 방법
DE102009019290B4 (de) 2009-04-30 2011-09-01 Ludwig-Maximilian-Universität Mikroskopvorrichtung
JP5400499B2 (ja) * 2009-06-29 2014-01-29 オリンパス株式会社 焦点検出装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325953A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Senseur optique de focalisation et dispositif de focalisation comportant un tel senseur
JPS5541432A (en) * 1978-09-20 1980-03-24 Nippon Kogaku Kk <Nikon> Focus detector
US4383168A (en) * 1980-06-02 1983-05-10 Raytheon Company Automatic focusing apparatus
JPS5752006A (en) * 1980-08-19 1982-03-27 Olympus Optical Co Ltd Method and device for detecting focus
US4530600A (en) * 1982-02-22 1985-07-23 Northrop Corporation Variable attenuator for optical transceiver
JPS59109805A (ja) * 1982-12-16 1984-06-25 Matsushita Electric Ind Co Ltd 位置検出装置
US4630927A (en) * 1983-02-15 1986-12-23 General Electric Company Optical projector
US4611912A (en) * 1983-04-04 1986-09-16 Ball Corporation Method and apparatus for optically measuring distance and velocity
JPS60100114A (ja) * 1983-11-05 1985-06-04 Canon Inc 合焦検出装置
JPS62929A (ja) * 1985-06-27 1987-01-06 Matsushita Electric Ind Co Ltd カメラの自動焦点調節装置

Also Published As

Publication number Publication date
JPH0563771B2 (enExample) 1993-09-13
EP0273717A3 (en) 1988-11-17
EP0273717A2 (en) 1988-07-06
KR880008043A (ko) 1988-08-30
JPS63163313A (ja) 1988-07-06
US4843228A (en) 1989-06-27
KR940002356B1 (ko) 1994-03-23
EP0273717B1 (en) 1993-02-17
DE3784231D1 (de) 1993-03-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee