Optical encoder with integrated index channel

An optical encoder includes an encoder pattern having (i) an A/B pattern of first areas and second areas alternating in a first direction, wherein the first areas have a different optical transmissivity or reflectivity than the second areas, and (ii) an index pattern disposed adjacent the A/B patter...

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Bibliographic Details
Main Authors Bin Saidan, Saiful Bahari, Hataguchi, Toshiya, Ming, Ting Hang
Format Patent
LanguageEnglish
Published 01.07.2008
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Summary:An optical encoder includes an encoder pattern having (i) an A/B pattern of first areas and second areas alternating in a first direction, wherein the first areas have a different optical transmissivity or reflectivity than the second areas, and (ii) an index pattern disposed adjacent the A/B pattern in the first direction.