SHAPE MEASURING DEVICE, SHAPE MEASURING METHOD, AND GLASS PLATE MANUFACTURING METHOD

A shape measuring apparatus includes: an image pick-up section that captures an image of two reflection spot groups of a pattern reflected in a first surface M1 and a second surface of a transparent flat plate and generates an image containing two reflection images separated in a direction perpendic...

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Bibliographic Details
Main Author OHTO KIMIAKI
Format Patent
LanguageEnglish
Published 25.04.2013
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
TESTING
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Summary:A shape measuring apparatus includes: an image pick-up section that captures an image of two reflection spot groups of a pattern reflected in a first surface M1 and a second surface of a transparent flat plate and generates an image containing two reflection images separated in a direction perpendicular to a direction of extending; a first surface reflection spot group estimating section that estimates from the image a first surface reflection spot group of the pattern generated by the first surface of the transparent flat plate; an inclination angle calculating section that calculates an inclination angle of the first surface of the transparent flat plate at an estimated position of the first surface reflection spot group; and a surface shape determining section that determines a shape of the first surface of the transparent flat plate based on the calculated inclination angle.
Bibliography:Application Number: US201213714836