发明名称 SPECTROSCOPIC SENSOR AND ANGLE LIMITING FILTER
摘要 An angle limiting filter includes: a first light-shielding layer containing a first light-shielding material and provided with a first opening; a second light-shielding layer containing a second light-shielding material and located in a region which surrounds at least one portion of the first light-shielding layer; a third light-shielding layer containing the first light-shielding material, provided with a second opening at least one portion of which overlaps the first opening, and located above the first light-shielding layer; and a fourth light-shielding layer containing the second light-shielding material and located above the second light-shielding layer in a region which surrounds at least one portion of the third light-shielding layer.
申请公布号 US2012236313(A1) 申请公布日期 2012.09.20
申请号 US201213413949 申请日期 2012.03.07
申请人 NAKAMURA NORIYUKI;SEIKO EPSON CORPORATION 发明人 NAKAMURA NORIYUKI
分类号 G01N21/55;G02B27/00 主分类号 G01N21/55
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