Invention Grant
- Patent Title: Optical system and optical apparatus incorporating the same
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Application No.: US15688510Application Date: 2017-08-28
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Publication No.: US10281735B2Publication Date: 2019-05-07
- Inventor: Tomohiko Ishibashi
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc., IP Division
- Priority: JP2016-173141 20160905
- Main IPC: G02B13/18
- IPC: G02B13/18 ; G02B27/58 ; G02B7/28 ; G02B13/20 ; H04N5/232 ; H04N5/238 ; G02B13/00 ; G02B5/00 ; G02B27/00 ; G02B9/62 ; G02B9/60
Abstract:
An optical system includes an aperture diaphragm, a first optical element disposed on a light incident side of the aperture diaphragm, and a second optical element disposed on a light emission side of the aperture diaphragm. Transmittance distribution of the first optical element satisfies a predetermined conditional expression. Transmittance distribution of the second optical element satisfies a predetermined conditional expression.
Public/Granted literature
- US20180067333A1 OPTICAL SYSTEM AND OPTICAL APPARATUS INCORPORATING THE SAME Public/Granted day:2018-03-08
Information query
