US 11,994,653 B2
Transparent member and transparent-member manufacturing method
Kento Hasegawa, Sakai (JP); and Yasushi Mizumachi, Hino (JP)
Assigned to KONICA MINOLTA, INC., Tokyo (JP)
Appl. No. 16/978,609
Filed by Konica Minolta, Inc., Tokyo (JP)
PCT Filed Apr. 5, 2019, PCT No. PCT/JP2019/015111
§ 371(c)(1), (2) Date Sep. 4, 2020,
PCT Pub. No. WO2019/203024, PCT Pub. Date Oct. 24, 2019.
Claims priority of application No. 2018-081269 (JP), filed on Apr. 20, 2018.
Prior Publication US 2021/0003745 A1, Jan. 7, 2021
Int. Cl. G02B 1/18 (2015.01); C23C 14/04 (2006.01); G02B 1/115 (2015.01); G03B 11/04 (2021.01)
CPC G02B 1/18 (2015.01) [C23C 14/042 (2013.01); G02B 1/115 (2013.01); G03B 11/045 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A transparent member comprising at least a base material or a base material provided with a layer on the base material, wherein the transparent member has a surface portion whose contact angle to water changes continuously,
wherein the surface portion is included in a water-repellent layer, and
wherein a thickness of the water-repellent layer changes continuously from a center of the base material in a radial direction.