Patent ID: 11971603
Assignee: ASIA OPTICAL CO., INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The scope as claimed in claim 3, wherein the objective lens systemfurther comprises a I-3 lens and a I-4 lens, wherein:
the I-2 lens further comprises a convex surface facing the image side;
the I-3 lens is a meniscus lens with positive refractive power and comprises a convex surface facing the object side and a concave surface facing the image side;
the I-4 lens is a meniscus lens with negative refractive power and comprises a convex surface facing the object side and a concave surface facing the image side;
the I-3 lens and the I-4 lens are disposed between the I-2 lens and the relay lens sys e and
the I-3 lens and the I-4 lens are arranged in order from the object side to the image side along the optical axis.