Patent ID: 11927749
Assignee: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.
Field: Optics (Instruments)
Classification: CPC G  F | IPC F  G

Claim 0:
1. A lens assembly for a weapon sight, the lens assembly comprising:
at least a first lens, the lens assembly having an optical axis; and
a focal plane array (FPA) coaxial with the optical axis of the lens assembly;
the lens assembly being configured to have a translational error ratio value less than unity via using a first parameter of each lens in the lens assembly to minimize an error in image shift, wherein the first parameter is at least one of lateral position, axial displacement, thickness, material, effective focal length, radius of curvature, conic constants, and higher order aspheric coefficients and wherein the translation error ratio less than unity is one wherein the lens assembly has a boresight sensitivity that is lower than that of the FPA and lens assembly if the FPA and lens assembly were moved separately as two bodies.