Title:
OPTICAL SYSTEM, IMAGE CAPTURING DEVICE, AND IMAGE CAPTURING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/281877
Kind Code:
A1
Abstract:
An optical system (2) in which first light (L11) in a visible area forms an image on first image capture elements (11), and second light (L12) in a far infrared area forms an image on second image capture elements (12). The optical system comprises: at least one lens (31-33) for transmitting each of the first and second light; and an aperture diaphragm (4) provided with an aperture (40). The aperture diaphragm is provided with an optical filter (41) that blocks the first light and transmits the second light in the periphery of the aperture. The optical system satisfies t < 2x (4npf) / {(n-1) D}. In the foregoing: t is the optical filter thickness; n is the refractive index of the second light in the optical filter; p is the pixel pitch of the second image capture elements; f is the focal distance of the second light in the optical system; and D is the effective diameter of the optical filter in the aperture diaphragm.
Inventors:
KUROSAKI RYO
SUZUKI TETSUYA
MURATA JUN
SUZUKI TETSUYA
MURATA JUN
Application Number:
PCT/JP2022/015933
Publication Date:
January 12, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G02B13/14; G03B11/00
Foreign References:
| JP2010175713A | 2010-08-12 | |||
| JP2021021892A | 2021-02-18 | |||
| US20210072519A1 | 2021-03-11 | |||
| US20200249379A1 | 2020-08-06 | |||
| JP2002369223A | 2002-12-20 | |||
| US20080165322A1 | 2008-07-10 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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