Abstract: An optical filter assembly includes two similarly configured linear polarized filters. Each linear polarized filter is in a circular configuration, has parallel grating lines, and an exterior periphery. The optical filter assembly has two similarly configured U-shaped cross sectional annular supports. Each annular support is in a U-shaped cross sectional configuration. Each annular support receives and frictionally supports an associated one of the linear polarized filters. The optical filter assembly has an annular retention ring in a U-shaped cross sectional configuration. The annular retention ring receives and slidably supports the two annular supports. The two annular supports are disposed in sliding contact and movement with respect to each other. In this manner the linear polarized filters are individually rotated and the passage of sunlight there through may be varied.