Title:
光学フィルタ及び光学装置
Document Type and Number:
Japanese Patent JP7271121
Kind Code:
B2
Abstract:
To provide an optical filter capable of preventing an increase in size of an image capturing device as much as possible and acquiring good images using visible and infrared light.SOLUTION: An optical filter provided herein consists of a first cut film configured to block light in a predetermined wavelength range, a second cut film configured to block light in a wavelength range on the longer wavelength side relative to the wavelength range of the first cut film, and a third cut film configured to block light in a wavelength range on the longer wavelength side relative to the wavelength ranges of the first and second cut films, the first and second cut films being disposed on different areas in a single plane of a substrate, and the third cut film being formed across the areas of the first and second cut films in a thickness direction of the substrate.SELECTED DRAWING: Figure 1
Inventors:
Yasuhiro Sato
Application Number:
JP2018186592A
Publication Date:
May 11, 2023
Filing Date:
October 01, 2018
Export Citation:
Assignee:
Canon Electronics Inc.
International Classes:
G02B5/28; G02B5/26; G03B11/00; H04N23/55; H04N23/75
Domestic Patent References:
| JP2013176018A | ||||
| JP2011237638A | ||||
| JP2013174818A |
Foreign References:
| WO2018155486A1 | ||||
| WO2017200007A1 | ||||
| US5072109 |
Attorney, Agent or Firm:
Patent Attorney Corporation Otsuka International Patent Office