US 12,345,877 B2
Optical device and use thereof
Hujun Huang, Yuyao Ningbo (CN); Yuqing Ye, Yuyao Ningbo (CN); Rongwei Liu, Yuyao Ningbo (CN); and Dong Luo, Yuyao Ningbo (CN)
Assigned to NINGBO SUNNY AUTOMOTIVE OPTECH CO., LTD., Yuyao (CN)
Appl. No. 17/619,967
Filed by NINGBO SUNNY AUTOMOTIVE OPTECH CO., LTD., Yuyao Ningbo (CN)
PCT Filed Jun. 4, 2020, PCT No. PCT/CN2020/094311
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2020/253541, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 201910520733.0 (CN), filed on Jun. 17, 2019; and application No. 201910699837.2 (CN), filed on Jul. 31, 2019.
Prior Publication US 2022/0357572 A1, Nov. 10, 2022
Int. Cl. G02B 27/00 (2006.01); B29D 11/00 (2006.01); H05B 3/84 (2006.01)
CPC G02B 27/0006 (2013.01) [B29D 11/00009 (2013.01); H05B 3/84 (2013.01); H05B 2203/007 (2013.01); H05B 2203/013 (2013.01); H05B 2203/016 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical device, comprising:
at least one lens element;
a lens barrel, wherein the lens barrel has an installation cavity, wherein the lens element is installed in the installation cavity of the lens barrel; and
at least one heating element, wherein the at least one heating element is arranged to contact a surface of the lens element near an object side in a manner capable of being powered-on to generate heat, so as to heat the lens element, and wherein pins of the at least one heating element are arranged in a non-clear region of the lens element;
wherein the at least one heating element comprises at least one second heating element arranged in the non-clear region of the lens element, wherein the second heating element has a closed-loop structure with a configuration formed by a plurality of heating wires connected in series to form an entirely closed loop with its ends connected;
wherein upper and lower sides of the second heating element each have a series port so that the outermost electric heating wire of the second heating element and the innermost heating wire of the second heating element are connected in series.