Patent ID: 11947092
Assignee: ASIA OPTICAL CO., INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
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.