Color separation optical assembly and image capture device
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United States of America Patent
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Jul 4, 2017
Grant Date -
Jun 23, 2016
app pub date -
Feb 26, 2016
filing date -
Aug 29, 2013
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Abstract
A color separation optical assembly (3) of an image capture device (1) includes, in order from a light incidence side, a first prism (10) which has a first dichroic film (D1) and extracts blue light (LB) reflected by the first dichroic film, a second prism (20) which has a second dichroic film (D2) and extracts red light (LR) transmitted through the first dichroic film and reflected by the second dichroic film, and a third prism (30) which extracts green light (LG) transmitted through the first and second dichroic films. The first dichroic film is a multiband dichroic film which reflects light of an infrared region from a long wavelength side of a red region.
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