Patent ID: 9004729
Filing Date: 2015-04-14
Classification: F21V,F41G,G02B

Abstract:
1. An internal IR filter assembly for an illuminator having a lamp disposed within a reflector with a face plate comprising: a spring-biased IR filter shaped as a hollow sleeve telescopically disposed over the lamp; a fixed cylindrical pedestal having one end coupled to the face plate; a sliding cylindrical mount coupled to the IR filter and telescopically disposed over the fixed pedestal; a gear drive; a driven gear engaged with the gear drive; a motor coupled to the gear drive to selectively and reversibly rotate the gear drive, the driven gear being coupled to the sliding cylindrical mount of the IR filter to selectively and reversibly translate the IR filter with respect to the lamp; and at least one rod coupled to the driven gear to prevent the rotation of the driven gear, the at least one rod being slidable within the illuminator but rotationally fixed relative to the illuminator.