JPS6334963B2 - - Google Patents

Info

Publication number
JPS6334963B2
JPS6334963B2 JP6622581A JP6622581A JPS6334963B2 JP S6334963 B2 JPS6334963 B2 JP S6334963B2 JP 6622581 A JP6622581 A JP 6622581A JP 6622581 A JP6622581 A JP 6622581A JP S6334963 B2 JPS6334963 B2 JP S6334963B2
Authority
JP
Japan
Prior art keywords
measured
beam waist
optical axis
length
light
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
JP6622581A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57179704A (en
Inventor
Yasukazu Fujimoto
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.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko 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 Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP6622581A priority Critical patent/JPS57179704A/ja
Publication of JPS57179704A publication Critical patent/JPS57179704A/ja
Publication of JPS6334963B2 publication Critical patent/JPS6334963B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
  • Measurement Of Optical Distance (AREA)
JP6622581A 1981-04-30 1981-04-30 Method and device for measuring length Granted JPS57179704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6622581A JPS57179704A (en) 1981-04-30 1981-04-30 Method and device for measuring length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6622581A JPS57179704A (en) 1981-04-30 1981-04-30 Method and device for measuring length

Publications (2)

Publication Number Publication Date
JPS57179704A JPS57179704A (en) 1982-11-05
JPS6334963B2 true JPS6334963B2 (fr) 1988-07-13

Family

ID=13309674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6622581A Granted JPS57179704A (en) 1981-04-30 1981-04-30 Method and device for measuring length

Country Status (1)

Country Link
JP (1) JPS57179704A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07107481B2 (ja) * 1987-05-21 1995-11-15 アンリツ株式会社 変位測定装置
JP2668937B2 (ja) * 1988-05-16 1997-10-27 富士ゼロックス株式会社 位置指定装置
GB8817672D0 (en) * 1988-07-25 1988-09-01 Sira Ltd Optical apparatus
JP2529049B2 (ja) * 1991-10-30 1996-08-28 株式会社ミツトヨ 光学式変位計
US6918538B2 (en) * 2002-12-18 2005-07-19 Symbol Technologies, Inc. Image scanning device having a system for determining distance to a target
US10455137B2 (en) * 2014-07-28 2019-10-22 Orbotech Ltd. Auto-focus system

Also Published As

Publication number Publication date
JPS57179704A (en) 1982-11-05

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