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Title:
PLASTIC LENS
Document Type and Number:
WIPO Patent Application WO/2016/174788
Kind Code:
A1
Abstract:
[Problem] To provide a plastic lens which can absorb light having a wavelength of 400 to 420 nm with high efficiency but is reduced in the absorption of light having a wavelength of around 420 nm or longer, is less affected by harmful light, rarely undergoes yellow coloration and therefore has excellent appearance, rarely undergoes yellowish discoloration over time, and has excellent heat resistance, light resistance and optical performance, particularly an excellent Abbe's number. [Solution] The plastic lens is characterized by comprising: an ultraviolet ray absorber represented by formula (I) (wherein R1 to R8 independently represent a monovalent group such as a hydrogen atom; and R9 represents a monovalent sulfur-containing group represented by formula (i) (wherein R10 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms or the like; R11 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms or the like; R12 represents a monovalent hydrocarbon group having 1 to 20 carbon atoms; the total number of carbon atoms in R10, n R11's and R12 is 30 or less; m represents an integer of 0 or 1; and n represents an integer of 0 to 3)); and a resin material.

Inventors:
SHISHINO Yuichi (5-26, Aza Shimoda, Etacho, Okazaki-sh, Aichi 92, 〒4442192, JP)
ONO Shingo (5-26, Aza Shimoda, Etacho, Okazaki-sh, Aichi 92, 〒4442192, JP)
KAWAI Koji (66-1, Horikiri 4-chome, Katsushika-k, Tokyo 10, 〒1248510, JP)
KANEKO Kotaro (66-1, Horikiri 4-chome, Katsushika-k, Tokyo 10, 〒1248510, JP)
KANEKO Nobuhiro (66-1, Horikiri 4-chome, Katsushika-k, Tokyo 10, 〒1248510, JP)
Application Number:
JP2015/079745
Publication Date:
November 03, 2016
Filing Date:
October 21, 2015
Export Citation:
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Assignee:
TOKAI OPTICAL CO., LTD. (5-26, Aza Shimoda Etacho, Okazaki-sh, Aichi 92, 〒4442192, JP)
MIYOSHI OIL & FAT CO., LTD. (66-1, Horikiri 4-chome Katsushika-k, Tokyo 10, 〒1248510, JP)
International Classes:
G02C7/10; C08K5/36; G02B1/04; G02B5/22
Foreign References:
JPH06505744A1994-06-30
JPH06505743A1994-06-30
JP2002122731A2002-04-26
JPH0867813A1996-03-12
JPH05197075A1993-08-06
JPH10140089A1998-05-26
US20070092831A12007-04-26
JP2006235587A2006-09-07
JP2005292240A2005-10-20
JP2011121214A2011-06-23
Other References:
See also references of EP 3290995A4
Attorney, Agent or Firm:
NISHIZAWA Toshio (Kyugetsu-kanda Bldg. 6F, 2-4-7 Kanda Jimbocho, Chiyoda-k, Tokyo 51, 〒1010051, JP)
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