Patent ID: 8398263
Filing Date: 2013-03-19
Classification: G02B

Abstract:
1. A filter wheel apparatus comprising: a planar circular base member with a mechanical shaft coupler located at an axis of rotation defined perpendicular to and centered on said circular base member, said circular base member penetrated by a plurality of base apertures whose centers are angularly spaced about the circumference of a circle, said centers of each of said base apertures defining an aperture axis perpendicular to plane of said aperture, said planar circular base member further comprising a corresponding plurality of reflector support structures, each of said reflector support structures being located in proximity to each of said plurality of base apertures; a plurality of dichroic reflectors that transmit light at a first band of wavelengths and reflect light at a second band of wavelengths, each of said plurality of dichroic reflectors affixed to one of said reflector support structures and thereby intercepting said aperture axis and oriented at a predetermined angle relative to the plane of said base aperture.