Patent ID: 11946723
Assignee: IN JUNG
Field: Optics (Instruments)
Classification: CPC F  G | IPC F  G

Claim 16:
17. A method of forming an optical scope, comprising:
providing an objective lens;
providing an eyepiece lens, wherein the eyepiece lens comprises a plurality of lens structures, each lens structure having either positive power or negative power, wherein the plurality of lens structures comprise a first lens structure having a positive power, a second lens structure, a third lens structure, and a fourth lens structure;
placing a reticle between the objective lens and the eyepiece lens;
placing an erecting optical system that erects an image between the objective lens and the reticle;
placing a field lens having negative power disposed between the eyepiece lens and the erecting optical system;
defining a straight imaginary line from a center of the objective lens to a center of the eyepiece lens;
arranging the reticle, the erecting optical system, and the field lens such that the imaginary line intersects each of the reticle, the erecting optical system, and the field lens respectively.