Optical filter, method of manufacturing optical filter, and optical instrument
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United States of America Patent
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Mar 20, 2018
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app pub date -
Aug 16, 2011
filing date -
Aug 19, 2010
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Abstract
An optical filter includes a first substrate which has a support portion, a second substrate which is supported by the support portion, a first optical film which is provided on the first substrate, and a second optical film which is provided on the second substrate to face the first optical film. The first substrate and the second substrate are fixed to each other by bonding a first bonding film which is provided on the entire region of a support surface of the support portion supporting the second substrate and a second bonding film which is provided on at least a region (opposing surface) facing the entire region of the support surface from a supported surface of the second substrate.
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