Title:
位相フィルタ、撮像光学系、及び撮像システム
Document Type and Number:
Japanese Patent JP6396638
Kind Code:
B2
Abstract:
A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.
Inventors:
Ken Shimano
Koichi Sakita
Mitsuhiko Ota
Koichi Sakita
Mitsuhiko Ota
Application Number:
JP2013072388A
Publication Date:
September 26, 2018
Filing Date:
March 29, 2013
Export Citation:
Assignee:
Maxell Co., Ltd.
International Classes:
G02B3/04; B60R1/00; G03B11/00; H04N5/232
Domestic Patent References:
| JP2009271537A | ||||
| JP2006139246A | ||||
| JP2007327966A | ||||
| JP2005331784A | ||||
| JP2011128238A |
Foreign References:
| US20100097487 |
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation