Plastic lens

Japanese Patent JP6162906

B2

To provide a plastic lens which can absorb light with a wavelength of 400 to 420 nm with sufficiently high efficiency but is reduced in the absorption of light with a wavelength of around 420 nm or longer, is less affected by harmful light, suppresses yellow coloration and therefore has excellent appearance, suppresses yellowish discoloration over time, and has excellent heat resistance, light resistance, and also optical performance, particularly an excellent Abbe's number. The plastic lens is characterized by containing an ultraviolet absorbing agent represented by the following formula (I): (in the formula, R 1 to R 8 each independently represent a monovalent group such as a hydrogen atom, R 9 represents a monovalent sulfur-containing group represented by the following formula (i): (in the formula, R 10 represents a divalent hydrocarbon group with 1 to 20 carbon atoms or the like; R 11 represents a divalent hydrocarbon group with 1 to 20 carbon atoms or the like; R 12 represents a monovalent hydrocarbon group with 1 to 20 carbon atoms; the total number of carbon atoms in R 10 , n number of R 11 , and R 12 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.

Yuichi Shishino
Shingo Ono
Koji Kawai
Kotaro Kaneko
Nobuhiro Kaneko

JP2016549587A

July 12, 2017

October 21, 2015

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Tokai Optical Co., Ltd.
Miyoshi Oil & Fat Co., Ltd.

G02C7/00; C08K5/3475; C08L75/04; C08L81/02; C08L101/00; G02B5/22

JP6505744A
JP6505743A
JP2002122731A
JP8067813A
JP5197075A
JP10140089A
JP2006235587A
JP2005292240A
JP2011121214A

US20070092831

Toshio Nishizawa
Taku Ando

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