US 11,898,076 B2
Contact lens and contact lens product
Wei-Yuan Chen, Taichung (TW); Po-Tsun Chen, Taichung (TW); Wei-Chun Chen, Taichung (TW); and Chun-Hung Teng, Taichung (TW)
Assigned to LARGAN MEDICAL CO., LTD., Taichung (TW)
Filed by LARGAN MEDICAL CO., LTD., Taichung (TW)
Filed on Nov. 11, 2022, as Appl. No. 18/054,561.
Application 18/054,561 is a continuation of application No. 16/794,328, filed on Feb. 19, 2020, granted, now 11,530,351.
Claims priority of application No. 108111054 (TW), filed on Mar. 28, 2019.
Prior Publication US 2023/0092481 A1, Mar. 23, 2023
Int. Cl. G02C 7/04 (2006.01); C09K 11/06 (2006.01); C09B 23/10 (2006.01)
CPC C09K 11/06 (2013.01) [C09B 23/105 (2013.01); G02C 7/04 (2013.01); C09K 2211/1007 (2013.01); G02C 2202/16 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A contact lens, comprising:
at least one color changeable region, wherein the color changeable region comprises at least one photoluminescence material;
wherein a weight percentage of the photoluminescence material in the contact lens is WP, an average transmittance in a wavelength range of 400 nm-700 nm of the color changeable region is T4070, an average transmittance in a wavelength range of 280 nm-400 nm of the color changeable region is T2840, and the following conditions are satisfied:
0.01%≤WP;
85%≤T4070; and
T2840≤20%.