US 11,947,092 B2
Lens assembly
Hsi-Ling Chang, Taichung (TW); and Guo-Yang Wu, Taichung (TW)
Assigned to SINTAI OPTICAL (SHENZHEN) CO., LTD., Shenzhen (CN); and ASIA OPTICAL CO., INC., Taichung (TW)
Filed by Sintai Optical (Shenzhen) Co., Ltd., ShenZhen (CN); and Asia Optical Co., Inc., Taichung (TW)
Filed on Jan. 3, 2022, as Appl. No. 17/567,261.
Claims priority of application No. 202110140028.5 (CN), filed on Feb. 2, 2021.
Prior Publication US 2022/0244509 A1, Aug. 4, 2022
Int. Cl. G02B 15/14 (2006.01); G02B 7/10 (2021.01); G02B 13/00 (2006.01); G02B 17/08 (2006.01); G02B 27/64 (2006.01); G03B 17/17 (2021.01)
CPC G02B 15/1465 (2019.08) [G02B 7/102 (2013.01); G02B 13/0045 (2013.01); G02B 13/0065 (2013.01); G02B 17/0896 (2013.01); G02B 27/646 (2013.01); G03B 17/17 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lens assembly comprising:
a first lens group which is with negative refractive power;
a second lens group which is with positive refractive power;
a third lens group which is with negative refractive power;
a fourth lens group which is with positive refractive power;
a fifth lens group which is with refractive power;
a sixth lens group which is with refractive power; and
a first reflective element which comprises a first reflective surface;
wherein the first lens group, the second lens group, the third lens group, the fourth lens group, the fifth lens group, and the sixth lens group are arranged in order from a first side to a second side along an axis;
wherein a light from the first side sequentially passes through the first lens group, the second lens group, the third lens group, the fourth lens group, the fifth lens group, and the sixth lens group to the second side;
wherein the first reflective element is disposed between the first lens group and the sixth lens group;
wherein the second lens group and the third lens group can move along the axis to change a magnification of the lens assembly.