US 11,835,800 B2
Spectacle lens
Sou Miyamoto, Tokyo (JP)
Assigned to HOYA LENS THAILAND LTD., Pathumthani (TH)
Appl. No. 17/279,906
Filed by HOYA LENS THAILAND LTD., Pathumthani (TH)
PCT Filed Sep. 27, 2019, PCT No. PCT/JP2019/038102
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/067408, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-184883 (JP), filed on Sep. 28, 2018.
Prior Publication US 2021/0397021 A1, Dec. 23, 2021
Int. Cl. G02C 7/02 (2006.01); G02C 7/10 (2006.01); G02B 1/18 (2015.01)
CPC G02C 7/024 (2013.01) [G02C 7/102 (2013.01); G02C 7/104 (2013.01); G02B 1/18 (2015.01)] 7 Claims
OG exemplary drawing
 
1. A spectacle lens comprising multilayer films on both surfaces of a lens substrate, wherein
a sum of mean reflectances on both surfaces of the spectacle lens in a wavelength band of 400 to 440 nm is 20.0% or more,
a reflectance on each surface of the spectacle lens has at least one maximum value in the wavelength band of 400 to 440 nm,
there is a difference between the mean reflectance on one surface of the spectacle lens and the mean reflectance on the other surface in the wavelength band of 400 to 440 nm, and
the sum of mean reflectances on both surfaces of the spectacle lens in a wavelength band of 360 to 400 nm is 6.0% or less.