JPH0674968B

An optical measuring device for measuring the thickness or a height of a step of a workpiece (5) comprises a pair of deviation measuring means (16), a pulse generating circuit (17) for producing pulse signals which control the deviation measuring means (16) so that they operate alternately, and sign...

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1. Verfasser:	NAGAO TOSHISHIGE
Format:	Patent
Sprache:	eng
Schlagworte:	GYROSCOPIC INSTRUMENTS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING DISTANCES, LEVELS OR BEARINGS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING
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creator	NAGAO TOSHISHIGE
description	An optical measuring device for measuring the thickness or a height of a step of a workpiece (5) comprises a pair of deviation measuring means (16), a pulse generating circuit (17) for producing pulse signals which control the deviation measuring means (16) so that they operate alternately, and signal processing means (17) for adding outputs of the deviation measuring means (16). The deviation measuring means each include an optical position detecting element (8) having a light receiving plane disposed perpendicular to an optical axis having a predetermined angle with respect to an optical axis of a light beam irradiating the workpiece (5), a laser light source (3) for emitting the light beam, and a drive circuit (2) responsive to the pulse signals to control the laser light source (3). The deviation measuring means (16) being controlled so that their optical position detecting elements (8) are irradiated alternately with the light beam and so that the deviation measuring means (16) are operable only when their own laser light source (3) is emitting the light beam.
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The deviation measuring means each include an optical position detecting element (8) having a light receiving plane disposed perpendicular to an optical axis having a predetermined angle with respect to an optical axis of a light beam irradiating the workpiece (5), a laser light source (3) for emitting the light beam, and a drive circuit (2) responsive to the pulse signals to control the laser light source (3). The deviation measuring means (16) being controlled so that their optical position detecting elements (8) are irradiated alternately with the light beam and so that the deviation measuring means (16) are operable only when their own laser light source (3) is emitting the light beam.</description><edition>5</edition><language>eng</language><subject>GYROSCOPIC INSTRUMENTS ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING DISTANCES, LEVELS OR BEARINGS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; NAVIGATION ; PHOTOGRAMMETRY OR VIDEOGRAMMETRY ; PHYSICS ; SURVEYING ; TESTING</subject><creationdate>1994</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19940921&DB=EPODOC&CC=JP&NR=H0674968B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19940921&DB=EPODOC&CC=JP&NR=H0674968B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAGAO TOSHISHIGE</creatorcontrib><title>JPH0674968B</title><description>An optical measuring device for measuring the thickness or a height of a step of a workpiece (5) comprises a pair of deviation measuring means (16), a pulse generating circuit (17) for producing pulse signals which control the deviation measuring means (16) so that they operate alternately, and signal processing means (17) for adding outputs of the deviation measuring means (16). The deviation measuring means each include an optical position detecting element (8) having a light receiving plane disposed perpendicular to an optical axis having a predetermined angle with respect to an optical axis of a light beam irradiating the workpiece (5), a laser light source (3) for emitting the light beam, and a drive circuit (2) responsive to the pulse signals to control the laser light source (3). The deviation measuring means (16) being controlled so that their optical position detecting elements (8) are irradiated alternately with the light beam and so that the deviation measuring means (16) are operable only when their own laser light source (3) is emitting the light beam.</description><subject>GYROSCOPIC INSTRUMENTS</subject><subject>MEASURING</subject><subject>MEASURING ANGLES</subject><subject>MEASURING AREAS</subject><subject>MEASURING DISTANCES, LEVELS OR BEARINGS</subject><subject>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</subject><subject>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</subject><subject>NAVIGATION</subject><subject>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</subject><subject>PHYSICS</subject><subject>SURVEYING</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1994</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOD2CvAwMDM3sTSzcOJhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFIOpyMjIlSBACDFhxs</recordid><startdate>19940921</startdate><enddate>19940921</enddate><creator>NAGAO TOSHISHIGE</creator><scope>EVB</scope></search><sort><creationdate>19940921</creationdate><title>JPH0674968B</title><author>NAGAO TOSHISHIGE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH0674968BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1994</creationdate><topic>GYROSCOPIC INSTRUMENTS</topic><topic>MEASURING</topic><topic>MEASURING ANGLES</topic><topic>MEASURING AREAS</topic><topic>MEASURING DISTANCES, LEVELS OR BEARINGS</topic><topic>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</topic><topic>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</topic><topic>NAVIGATION</topic><topic>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</topic><topic>PHYSICS</topic><topic>SURVEYING</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>NAGAO TOSHISHIGE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NAGAO TOSHISHIGE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>JPH0674968B</title><date>1994-09-21</date><risdate>1994</risdate><abstract>An optical measuring device for measuring the thickness or a height of a step of a workpiece (5) comprises a pair of deviation measuring means (16), a pulse generating circuit (17) for producing pulse signals which control the deviation measuring means (16) so that they operate alternately, and signal processing means (17) for adding outputs of the deviation measuring means (16). The deviation measuring means each include an optical position detecting element (8) having a light receiving plane disposed perpendicular to an optical axis having a predetermined angle with respect to an optical axis of a light beam irradiating the workpiece (5), a laser light source (3) for emitting the light beam, and a drive circuit (2) responsive to the pulse signals to control the laser light source (3). The deviation measuring means (16) being controlled so that their optical position detecting elements (8) are irradiated alternately with the light beam and so that the deviation measuring means (16) are operable only when their own laser light source (3) is emitting the light beam.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record>
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subjects	GYROSCOPIC INSTRUMENTS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING DISTANCES, LEVELS OR BEARINGS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING
title	JPH0674968B
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