Patent ID: 9494787
Filing Date: 2016-11-15
CPC Classification: F41G,G02B

Claim Text:
1. A direct view telescopic sight, comprising: an objective lens assembly mounted to receive collimated light of an image from an object direction and direct the light along an optical path; an eyepiece assembly mounted to receive the light along the optical path and to emit collimated and magnified light of the image along an eye-ward direction; and a prism erector assembly positioned within the optical path between the objective lens assembly and the eyepiece assembly, the prism erector assembly including: wherein the objective lens, eyepiece, and prism erector assemblies are coupled to bring the image into focus at only one focal plane at a given time along the optical path between the objective lens and eyepiece assemblies, and wherein the only one focal plane is positioned to be coincident with one focal plane of the plurality of focal planes at the given time.