MEASUREMENT METHOD FOR MEASURING SHAPE OF TEST SURFACE, MEASUREMENT APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL ELEMENT

MEASUREMENT METHOD FOR MEASURING SHAPE OF TEST SURFACE, MEASUREMENT APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL ELEMENT

Provided is a measurement method or apparatus that can reduce the time for measuring the shape of an entire test surface. Each of a plurality of measurement ranges is set so that one measurement range overlaps a portion of at least another measurement range to form an overlap region, each measuremen...

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1. Verfasser: OSAKI YUMIKO
Format: Patent
Sprache:eng
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MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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creator OSAKI YUMIKO
description Provided is a measurement method or apparatus that can reduce the time for measuring the shape of an entire test surface. Each of a plurality of measurement ranges is set so that one measurement range overlaps a portion of at least another measurement range to form an overlap region, each measurement range being a portion of the test surface. Then, the shape of the test surface is measured at a first resolution in a first measurement range among the plurality of measurement ranges, and is measured at a second resolution in a second measurement range. Pieces of data of the shapes of the test surface in the plurality of measurement ranges are stitched together using the resulting measurement data to calculate the shape of the test surface.
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subjects MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
title MEASUREMENT METHOD FOR MEASURING SHAPE OF TEST SURFACE, MEASUREMENT APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL ELEMENT
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