SHAPE DIVISION METHOD, SHAPE DIVISION PROGRAM AND DATA PROCESSOR

PROBLEM TO BE SOLVED: To enable shape division for edge machining of a spectacle lens to be performed according to prescribed standards so as to improve accuracy and efficiency of the shape division.SOLUTION: A shape division method of dividing three dimensional shape data of a spectacle lens into a...

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Hauptverfasser: SUZUE TAKAHIRO, SAGAWA MASAHIKO, DAIMARU KOJI
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creator SUZUE TAKAHIRO
SAGAWA MASAHIKO
DAIMARU KOJI
description PROBLEM TO BE SOLVED: To enable shape division for edge machining of a spectacle lens to be performed according to prescribed standards so as to improve accuracy and efficiency of the shape division.SOLUTION: A shape division method of dividing three dimensional shape data of a spectacle lens into a plurality of shape element data for edge machining includes steps of: acquiring a prescribed circumscribed graphic shape 55 circumscribing a projection shape 54 of the circumference of the spectacle lens by a prescribed angle while varying the relative angle between the projection shape 54 and the circumscribed graphic shape 55; extracting data on an inner region shape 56 common among all the acquired circumscribed graphic shapes 55 as outermost shape data for machining; acquiring a difference region between a shape 56 specified by the outermost shape data for machining and a projection shape 54 specified by the projection shape data of the lens circumference; and extracting shape data of the acquired difference region as shape data for penetration machining.
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extracting data on an inner region shape 56 common among all the acquired circumscribed graphic shapes 55 as outermost shape data for machining; acquiring a difference region between a shape 56 specified by the outermost shape data for machining and a projection shape 54 specified by the projection shape data of the lens circumference; and extracting shape data of the acquired difference region as shape data for penetration machining.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; CONTACT LENSES ; COUNTING ; DRESSING OR CONDITIONING OF ABRADING SURFACES ; ELECTRIC DIGITAL DATA PROCESSING ; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS ; GRINDING ; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING ; OPTICS ; PERFORMING OPERATIONS ; PHYSICS ; POLISHING ; SPECTACLES ; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES ; TRANSPORTING</subject><creationdate>2014</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&amp;date=20141009&amp;DB=EPODOC&amp;CC=JP&amp;NR=2014193497A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20141009&amp;DB=EPODOC&amp;CC=JP&amp;NR=2014193497A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SUZUE TAKAHIRO</creatorcontrib><creatorcontrib>SAGAWA MASAHIKO</creatorcontrib><creatorcontrib>DAIMARU KOJI</creatorcontrib><title>SHAPE DIVISION METHOD, SHAPE DIVISION PROGRAM AND DATA PROCESSOR</title><description>PROBLEM TO BE SOLVED: To enable shape division for edge machining of a spectacle lens to be performed according to prescribed standards so as to improve accuracy and efficiency of the shape division.SOLUTION: A shape division method of dividing three dimensional shape data of a spectacle lens into a plurality of shape element data for edge machining includes steps of: acquiring a prescribed circumscribed graphic shape 55 circumscribing a projection shape 54 of the circumference of the spectacle lens by a prescribed angle while varying the relative angle between the projection shape 54 and the circumscribed graphic shape 55; 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subjects CALCULATING
COMPUTING
CONTACT LENSES
COUNTING
DRESSING OR CONDITIONING OF ABRADING SURFACES
ELECTRIC DIGITAL DATA PROCESSING
FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
GRINDING
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
OPTICS
PERFORMING OPERATIONS
PHYSICS
POLISHING
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
TRANSPORTING
title SHAPE DIVISION METHOD, SHAPE DIVISION PROGRAM AND DATA PROCESSOR
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