Title:
OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2016/017791
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a thin, highly heat-resistant optical filter that includes a dielectric multi-layer film, has a sufficient viewing angle, and has improved crack resistance; an optical filter that has excellent heat resistance, exhibits little hygroscopicity and little warpage, and is particularly suitable for near-infrared cut filters that can be suitably used for correcting the visibility of solid-state imaging elements, such as CCDs or CMOS image sensors; and a solid-state imaging element comprising said optical filter. This optical filter comprises: a substrate that includes a transparent resin having a glass transition temperature (Tg) of from 110 to 500°C; and a dielectric multi-layer film on at least one surface of the substrate. The optical filter is characterized in that at least one layer in the dielectric multi-layer film is formed by ion beam-assisted deposition using a gas mixture including an inert gas and an oxygen gas.
Inventors:
KISHIDA HIROYUKI (JP)
Application Number:
PCT/JP2015/071749
Publication Date:
February 04, 2016
Filing Date:
July 31, 2015
Export Citation:
Assignee:
JSR CORP (JP)
International Classes:
B32B7/023; G02B5/28; G02B5/22; G02B5/26; H04N5/335; H04N101/00
Foreign References:
| JP2012008532A | 2012-01-12 | |||
| JP2007248495A | 2007-09-27 | |||
| JP2002277629A | 2002-09-25 | |||
| JP2007043063A | 2007-02-15 | |||
| JP2009139925A | 2009-06-25 | |||
| JP2004347740A | 2004-12-09 | |||
| JP2008112033A | 2008-05-15 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Patent business corporation SSINPAT (JP)
Patent business corporation SSINPAT (JP)
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