Title:
COLOR SEPARATION OPTICAL SYSTEM, IMAGING UNIT, AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/216386
Kind Code:
A1
Abstract:
The present invention provides a color separation optical system, an imaging unit, and an imaging device capable of suppressing color shading. A color separation optical system (10) is constituted by combining a first prism (12) for extracting B light, a second prism (14) for extracting R light, a third prism (16) for extracting IR light, and a fourth prism (18) for extracting G light. The first prism 12 reflects B light at the second surface (12b) thereof to separate B light. The second prism (14) reflects R light at the second surface (14b) thereof to separate R light. The third prism (16) reflects IR light at the second surface (16b) thereof to separate IR light. The color separation optical system (10) is constituted such that the second surface (16b) of the third prism maximizes the incidence angle of light passing through an optical axis Lz.
Inventors:
SAITA ARIHIRO (JP)
Application Number:
PCT/JP2018/015239
Publication Date:
November 29, 2018
Filing Date:
April 11, 2018
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/04; G02B5/20; H04N5/225; H04N9/09
Foreign References:
| JP2003143618A | 2003-05-16 | |||
| JP2018023077A | 2018-02-08 | |||
| JPH0727909A | 1995-01-31 |
Attorney, Agent or Firm:
MATSUURA, Kenzo (JP)
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