Patent ID: 11971603
Assignee: SINTAI OPTICAL (SHENZHEN) CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The scope as claimed in claim 2, wherein the scope satisfies at least one of following conditions:

0≤|R92/R101|0.25;

20 degrees≤FOV×MEL≤24 degrees;

wherein R101 is the radius of curvature of an object side surface of the lens closest to the object side in the eyepiece system, R122 is the radius of curvature of the image side surface of the lens closest to the image side in the eyepiece system, R92 is the radius of curvature of an image side surface of the lens closest to the image side in the relay lens system, FOV is a field of view of the scope, and MEL is a magnification of the relay lens system.