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Shape measuring apparatus
 
   
Document Number
US Patent 7456978
Issued Date
November 25, 2008
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Abstract
A shape measuring apparatus includes a point light source including a white light-emitting diode, a collimator lens for forming a parallel beam as a result of causing light emitted from the point light source to be incident upon the collimator lens, a telecentric lens device, including two-side telecentric optics or object-side telecentric optics, for being irradiated with the light that has passed an object to be measured from the collimator lens, and an image sensor for projecting thereon an image of the object produced by the light that has passed through the telecentric lens device.
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Number of Claims:
2
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Published
November 25, 2008
Application Number
11/274,200
Filed
November 16, 2005
US Classification
356/638   356/635
Int'l Classification
G01B   11/04   (20060101)  
Assistant Examiner
Priority Data
Nov 24, 2004 [JP] 2004-339213
USPTO Field of Search
356/612   356/613   356/621   356/612   356/613  
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