JPS57166530A - Color measuring device - Google Patents

Color measuring device

Info

Publication number
JPS57166530A
JPS57166530A JP5199881A JP5199881A JPS57166530A JP S57166530 A JPS57166530 A JP S57166530A JP 5199881 A JP5199881 A JP 5199881A JP 5199881 A JP5199881 A JP 5199881A JP S57166530 A JPS57166530 A JP S57166530A
Authority
JP
Japan
Prior art keywords
measuring instrument
distance measuring
output
basis
contactless distance
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
JP5199881A
Other languages
Japanese (ja)
Inventor
Masakatsu Kurita
Naotake Nagao
Koji Morishita
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP5199881A priority Critical patent/JPS57166530A/en
Publication of JPS57166530A publication Critical patent/JPS57166530A/en
Pending 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

Abstract

PURPOSE:To obtain an invariably accurate color discrimination output by providing a contactless distance measuring instrument which measures a distance up to an object to be meausred, and a mechanism which varies the focal length of a projection optical system on the basis of the output of said distance measusring instrument. CONSTITUTION:A contactless distance measuring instrument measures a distance up to an object to be measured, and an automatic focus adjusting mechanism varies the focal length of a projection optical system on the basis of the output of said contactless distance measuring instrument. For example, a contactless distance measuring instrument 19 which outputs a signal K corresponding to one of addresses 1N-nN of the object 4 by utilizing an ultrasonic wave or infrared rays is fixed atop of the lens barrel of a projection lens 3. When the object 4 moves to an address Kn', a motor 24 is driven through a motor driving circuit 23 on the basis of the count output CD of a reversible counter 22 which corresponds to a difference between signals KN and KN' outputted from the contactless distance measuring instrument 19 and an address storage circuit 20, so that the projection lens 3 moves to the address Kn' in a movement stroke.
JP5199881A 1981-04-07 1981-04-07 Color measuring device Pending JPS57166530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5199881A JPS57166530A (en) 1981-04-07 1981-04-07 Color measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5199881A JPS57166530A (en) 1981-04-07 1981-04-07 Color measuring device

Publications (1)

Publication Number Publication Date
JPS57166530A true JPS57166530A (en) 1982-10-14

Family

ID=12902509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5199881A Pending JPS57166530A (en) 1981-04-07 1981-04-07 Color measuring device

Country Status (1)

Country Link
JP (1) JPS57166530A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180018A (en) * 1984-09-28 1986-04-23 Yamatake Honeywell Co Ltd Color detecting apparatus
JPS63313024A (en) * 1987-06-08 1988-12-21 コルモ−ゲン　コ−ポレイシヨン Remote reading type spectrophotometer
EP1936945A1 (en) * 2006-12-21 2008-06-25 Gretag-Macbeth AG Scanning apparatus with electronic distance control and without distance sensor
US7633051B2 (en) 2006-12-18 2009-12-15 X-Rite Europe Gmbh Spectral photoelectric measurement transformer
US7821639B2 (en) 2006-12-21 2010-10-26 X-Rite Europe Gmbh Color measuring head and scanner device equipped therewith

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180018A (en) * 1984-09-28 1986-04-23 Yamatake Honeywell Co Ltd Color detecting apparatus
JPS63313024A (en) * 1987-06-08 1988-12-21 コルモ−ゲン　コ−ポレイシヨン Remote reading type spectrophotometer
US7633051B2 (en) 2006-12-18 2009-12-15 X-Rite Europe Gmbh Spectral photoelectric measurement transformer
EP1936945A1 (en) * 2006-12-21 2008-06-25 Gretag-Macbeth AG Scanning apparatus with electronic distance control and without distance sensor
US7755773B2 (en) 2006-12-21 2010-07-13 X-Rite Europe Gmbh Scanner device
US7821639B2 (en) 2006-12-21 2010-10-26 X-Rite Europe Gmbh Color measuring head and scanner device equipped therewith

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