Optics: image projectors – Color filter
Patent
1993-04-28
1995-02-21
Cuchlinski, Jr., William A.
Optics: image projectors
Color filter
353 94, 362231, 348 97, G03B 2100
Patent
active
053920805
ABSTRACT:
A real-time telecine system for converting motion picture film to high definition video contains a control unit comprising a database which provides complete control over all parameters associated with the film to high definition video conversion. The telecine system comprises a lamphouse which generates three monochromatic light sources wherein the light intensity for each light source is controlled independently by the control unit. Each light source contains a lamp, a variable power supply, a lens configuration and a light valve. Each lamp comprises a non-incandescent lamp such as xenon, and generates a collimated light beam. Each lens configuration contains a heat mirror, dichroic filters and a focusing lens. The dichroic filters for each light source generate a monochromatic light source by filtering the light beam. The focusing lens focuses the monochromatic light beam from each light source for input to an integrating sphere. The integrating sphere generates a polychromatic diffused light source for illuminating a film frame to generate an optical film image.
REFERENCES:
patent: 4384769 (1983-05-01), Brei et al.
patent: 5012346 (1991-04-01), DeJager et al.
patent: 5068739 (1991-11-01), Filo
patent: 5276522 (1994-01-01), Mead
Galt John
Pearman James
Cuchlinski Jr. William A.
Dowling William C.
Sony Electronics Inc.
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