Patent ID: 8331047
Filing Date: 2012-12-11
Classification: G02B

Abstract:
1. An optical filter device comprising: a casing comprising a bottom slat and a railed seat formed on the bottom slat, the seat comprises a first sidewall and a second sidewall parallel to the first sidewall, the seat defines a first through hole on the bottom slat between the first sidewall and the second sidewall, the seat defines a transmission cutout through the first sidewall; a frame slidably received in the seat, the frame comprising a top surface corresponding to the first sidewall and a bottom surface corresponding to the second sidewall, and defining a pair of receiving through holes arranged in a line parallel to the top surface; two different optical filters correspondingly received in the receiving through holes; a driver fixed on the bottom slat for driving the frame to slide through the transmission cutout; and a cover fastened to the casing for covering the seat, the cover defines a second through hole corresponding to the first through hole.