Segmented sectional reflection for the projection of light beams and its method of production
Patent 4066887 Issued on January 3, 1978. Estimated Expiration Date: 
January 3, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 3, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1248456 3689760 InventorApplicationNo. 05/736237 filed on 10/27/1976US Classes:362/341, Reflector353/98, REFLECTOR359/851, Composite or echelon mirrors or light concentrating array359/900, METHODS362/346, Plural separate reflectors or separate sections362/350Bowl shaped main surfaceExaminersPrimary: Hix, L. T.Assistant: Gellner, M. L. Attorney, Agent or FirmAbstractA projection system, such as a slide film or motion picture projection system, includes a light source, a reflector, a film gate or aperture, and a screen. The reflector is formed from a deep-dish ellipse reflector by cutting the ellipse into at least three reflector sectors and then outwardly radially deforming the outer edges, the deformation occurring within a certain critical range. The deformed outer edges are then clamped by circular clamping means. | |
