Spectacle lens
One embodiment according to the present disclosure relates to a spectacle lens containing a compound having a maximum absorption wavelength of 350 nm or more and 365 nm or less and a molar extinction coefficient of 20,000 l/mol·cm or more.
1 . A spectacle lens comprising:
a lens substrate that contains
Compound 1 having a maximum absorption wavelength of 350 nm or more and 365 nm or less and a molar extinction coefficient of 20,000 l/mol·cm or more, and
a resin,
wherein,
the lens substrate has a refractive index ne of 1.58 or more and 1.80 or less.
2 . The spectacle lens according to claim 1 , comprising 0.05 parts by mass or more and 2.00 parts by mass or less of the Compound 1 with respect to 100 parts by mass of the resin.
3 . The spectacle lens according to claim 1 , comprising 0.05 parts by mass or more and 0.60 parts by mass or less of the Compound 1 with respect to 100 parts by mass of the resin.
4 . The spectacle lens according to claim 1 ,
wherein a transmittance of light with a wavelength of 410 nm in the entire spectacle lens is 5% or less, and
wherein a transmittance of light with a wavelength of 430 nm in the entire spectacle lens is 70% or more.
5 . The spectacle lens according to claim 1 , comprising a coloring agent L having a maximum absorption wavelength of 550 nm or more and 600 nm or less at 20 ppm by mass in a toluene solution.
6 . The spectacle lens according to claim 1 , comprising a coloring agent S having a maximum absorption wavelength of 500 nm or more and less than 550 nm at 20 ppm by mass in a toluene solution.
7 . The spectacle lens according to claim 1 ,
wherein the resin is a cured product of an isocyanate component containing: at least one selected from the group consisting of bis(isocyanatomethyl) bicyclo[2.2.1]heptane, bis(isocyanatomethyl)cyclohexane, bis(isocyanatomethyl)benzene, tolylene diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, and pentamethylene diisocyanate; and an active hydrogen compound component.
8 . The spectacle lens according to claim 7 ,
wherein the active hydrogen compound component contains at least one selected from the group consisting of toluenediamine, pentaerythritol tetrakismercaptoacetate, pentaerythritol tetrakismercaptopropionate, trimethylolpropane trismercaptoacetate, trimethylolpropane trismercaptopropionate, bis(mercaptoethylthio) mercaptopropane, bis(mercaptomethyl)-3,6,9-trithiaundecandithiol, dimercaptoethyl sulfide, bis(mercaptomethyl)dithiane, dimercaptoethyl ether, and diethylene glycol.
9 . The spectacle lens according to claim 8 ,
wherein the bis(mercaptomethyl)-3,6,9-trithiaundecandithiol is a mixture of 4,7-bis(mercaptomethyl)-3,6,9-trithiaundecane-1,11-dithiol, 4,8-bis(mercaptomethyl)-3,6,9-trithiaundecane-1,11-dithiol and 5,7-bis(mercaptomethyl)-3,6,9-trithiaundecane-1,11-dithiol.
10 . The spectacle lens according to claim 1 ,
wherein the resin is an episulfide resin.
11 . The spectacle lens according to claim 1 ,
wherein the refractive index ne of the lens substrate is 1.60 or more and 1.80 or less.
12 . The spectacle lens according to claim 1 , comprising at least one layer selected from the group consisting of a hard coat layer, a foundation layer, and an antireflection layer.
13 . The spectacle lens according to claim 1 ,
wherein the lens substrate is of a meniscus type.
14 . The spectacle lens according to claim 13 ,
wherein the optical center thickness of the spectacle lens is 0.5 mm or more and 10.0 mm or less.
15 . The spectacle lens according to claim 2 ,
wherein a transmittance of light with a wavelength of 410 nm in the entire spectacle lens is 5% or less, and
wherein a transmittance of light with a wavelength of 430 nm in the entire spectacle lens is 70% or more.
16 . The spectacle lens according to claim 15 , comprising a coloring agent L having a maximum absorption wavelength of 550 nm or more and 600 nm or less at 20 ppm by mass in a toluene solution.
17 . The spectacle lens according to claim 16 , comprising a coloring agent S having a maximum absorption wavelength of 500 nm or more and less than 550 nm at 20 ppm by mass in a toluene solution.
18 . The spectacle lens according to claim 1 ,
wherein the refractive index ne of the lens substrate is 1.70 or more and 1.80 or less.
19 . The spectacle lens according to claim 1 ,
wherein the refractive index ne of the lens substrate is 1.74 or more and 1.80 or less.