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| Number | Title | Issue Date |
| 7040766 | Illumination optical system and projection-type display apparatus The illumination optical system for guiding a light emitted from a light source to an object to be illuminated along an optical path includes a first reflecting mirror reflecting a part of a light which is moving in a forward direction along the optical path to move... | 05/09/2006 |
| 4350417 | Apparatus to control light intensity from arc lamp An apparatus for controlling the light intensity output from an arc lamp for use with an arc lamp-illuminated projector includes a light valve to control the projector output light intensity by the selective positioning of the light valve in all or a port... | 09/21/1982 |
| 4274719 | Slide projector A series of slides are placed in a vertical loader and are movable alternatively into respective ones of two projection positions. Each slide is moved laterally of the loader by a carriage, then pushed to the projection position by a push rod. During proj... | 06/23/1981 |
| 4231643 | Photographic film projection dissolve system for arc lamp projectors A photographic film projection system includes a plurality of projectors, one of which is an arc lamp projector, and a dissolver instrument whose controlled output power to the arc lamp projector is a phase controlled average a.c. power. The arc lamp proj... | 11/04/1980 |
| 4169668 | Transparency projector comprising a plurality of optical systems The present invention relates to a projector comprising two optical systems enabling transparencies to be projected with cross-fading, in 3-D and with double-width panning, said projector operating with a single transparency distributing and recuperating ... | 10/02/1979 |
| 4158491 | Photographic film projection dissolve system for arc lamp projectors A photographic film projection system includes a plurality of projectors, one of which is an arc lamp projector, and a dissolver instrument whose controlled output power to the arc lamp projector is a phase controlled average a.c. power. The arc lamp proj... | 06/19/1979 |
