- Patent Title: Optical material, composition for optical material, and use thereof
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Application No.: US14765980Application Date: 2014-02-27
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Publication No.: US09933635B2Publication Date: 2018-04-03
- Inventor: Toshiya Hashimoto , Naoyuki Kakinuma , Kouya Kojima
- Applicant: MITSUI CHEMICALS, INC.
- Applicant Address: JP Minato-Ku, Tokyo
- Assignee: MITSUI CHEMICALS INC.
- Current Assignee: MITSUI CHEMICALS INC.
- Current Assignee Address: JP Minato-Ku, Tokyo
- Agency: Buchanan, Ingersoll & Rooney PC
- Priority: JP2013-036694 20130227; JP2013-258501 20131213
- International Application: PCT/JP2014/054971 WO 20140227
- International Announcement: WO2014/133111 WO 20140904
- Main IPC: G02C3/00
- IPC: G02C3/00 ; G02C7/10 ; G02B5/20 ; G02C7/02 ; G02B1/04

Abstract:
The optical material of the present invention contains one or more kinds of ultraviolet absorber (a) having a maximum absorption peak within a range of equal to or greater than 350 nm and equal to or less than 370 nm, in which a light transmittance of the optical material having a thickness of 2 mm satisfies the following characteristics (1) to (3), (1) a light transmittance at a wavelength of 410 nm is equal to or less than 10%, (2) a light transmittance at a wavelength of 420 nm is equal to or less than 70%, and (3) a light transmittance at a wavelength of 440 nm is equal to or greater than 80%.
Public/Granted literature
- US20150370094A1 OPTICAL MATERIAL, COMPOSITION FOR OPTICAL MATERIAL, AND USE THEREOF Public/Granted day:2015-12-24
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