Title:
光学フィルタ
Document Type and Number:
Japanese Patent JP6504176
Kind Code:
B2
Abstract:
To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol·cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm:In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R1 is a monovalent hydrocarbon group which may have a substituent, or the like, R2 to R5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.
Inventors:
Kazuhiko Shiono
Yoshioka Mana
Shoko Suzuki
Hiroki Hodaka
Yoshioka Mana
Shoko Suzuki
Hiroki Hodaka
Application Number:
JP2016548884A
Publication Date:
April 24, 2019
Filing Date:
September 14, 2015
Export Citation:
Assignee:
AGC Inc.
International Classes:
G02B5/22; C09B23/00; C09B57/00
Domestic Patent References:
| JP2002122731A | ||||
| JP53133033A | ||||
| JP2008039961A |
Foreign References:
| WO2014088063A1 | ||||
| DE10109243A1 |
Attorney, Agent or Firm:
Kenji Izumina
Toshiharu Ogawa
Toshiharu Ogawa