Patent ID: 9664877
Date: 2017-05-30
CPC Classifications: G02B,G03B

Claim:
1. An integrated sensor and lens assembly, comprising: an image sensor; a lens mount coupled to the image sensor; a lens barrel secured by the lens mount, the lens barrel comprising one or more lenses along an optical axis substantially perpendicular to a focal plane, the lens barrel comprising a first material that expands or contracts in response to a temperature change according to a first coefficient of thermal expansion, wherein expansion of the lens barrel causes a first shift in the focal plane in a first direction along the optical axis; and a pair of prisms intersecting the optical axis, the prisms comprising a second material that expands or contracts in response to the temperature change according to a second coefficient of thermal expansion to cause a first change in combined thickness of the pair of prisms along the optical axis; a pair of pushrods coupled between the lens mount and the pair of prisms, the pair of pushrods comprising a third material that expands or contracts in response to the temperature change according to a third coefficient of thermal expansion, wherein expansion of the pair of pushrods causes a second change in combined thickness of the pair of prisms along the optical axis; and wherein the second material, third material, and geometry of the pair of prisms are configured such that the first change in combined thickness and the second change in combined thickness of the pair of prisms cause a second shift in the focal plane in a second direction along the optical axis opposite the first direction.