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| Number | Title | Issue Date |
| 8061848 | Methods and apparatus for projecting images Methods and apparatus provide for Reveal. Reveal includes a lens and a light source mounted within a housing. The light source projects light through the lens onto a projection surface. A first slide, a second slide and a motion slide are mounted in the housing betw... | 11/22/2011 |
| 7106014 | Lectern A lectern incorporating a support member having a recess that can receive a control panel or laptop or notebook computer, for use with the by a speaker or other presenter. The support member defines an interior, and includes a keyboard tray slidably received within ... | 09/12/2006 |
| 7005180 | Optically isotrophic polycarbonate films and a method for the production thereof Injection-molding materials comprised of polycarbonate can be processed into optically isotropic films in a chill roll extrusion method. The optically isotropic films for protecting data carriers (CD-ROMS) from becoming scratched, or they are used as supporting mate... | 02/28/2006 |
| 6976916 | Ergonomic hand-held electronic device with keypad input and display screen An ergonomic and weatherproof hand-held electronic device 10. The device 10 includes a housing 12 which surrounds internal electronics. An input 28 and a display screen 32 are mounted on the housing 12. The housing 12... | 12/20/2005 |
| 6773113 | Projection arrangement for projecting an image onto a projection surface In a projection arrangement for projecting an image onto a projection surface, there are provided a light source (26), a control unit (25), a light modulator (10), which is controllable by said control unit (25) in order to generate an im... | 08/10/2004 |
| 6611379 | Beam splitter and method for generating equal optical path length beams The present invention is a beam splitter for splitting an incident beam into first and second beams so that the first and second beams have a fixed separation and are parallel upon exiting. The beam splitter includes a first prism, a second prism, and a f... | 08/26/2003 |
| 6481853 | Image projector forming rotating image An image projector including a film assembly, a motor, a light source, and a lens. The film assembly mounts a plurality of films such that the film assembly secures a first film of the plurality of films in a stationary position with respect to the film a... | 11/19/2002 |
| 6474819 | Combination overhead projector and electronic display device A projection display that combines both overhead projector and electronic display functionality in a single projector. This invention provides a single comprehensive solution, which addresses both overhead projection display needs, as well as electronic p... | 11/05/2002 |
| 5963276 | Back projection transparency viewer with overlapping pixels A method of transparency viewing, including, placing the transparency at a viewing surface, forming a light pattern and projecting the light pattern to back-illuminate the transparency. Preferably, the light pattern is formed by spatially modulating a bea... | 10/05/1999 |
| 5208891 | Fiber-optic viewgraph projector A viewgraph projector having a light above the transparency receiver and jecting downward through the transparency is provided. The projected image is received below the transparency by a condenser lens and further transmitted by a flexible fiber-optic c... | 05/04/1993 |
| 5110206 | Device for forming a composite image of a person's face A transparent viewing sheet has a plurality of facial features outlined thereon and is used for form am image by viewing the facial features thereon. Rotatably concentric transparent facial feature rings are disposed in overlaid relation with each other a... | 05/05/1992 |
| 5083854 | Spatial light modulator with improved aperture ratio A spatial light modulator is disclosed with a first lens array disposed adjacent to a matrix of light modulators, and in proximity to a liquid crystal light valve containing a photoconductive element. Low intensity light is collimated by a lens element to... | 01/28/1992 |
| 4953971 | Interactive image projection apparatus An interactive image projection apparatus for the projection of computer generated images on a projection surface in cooperation with a light source and projection optics for projecting a beam of light from the light source onto the projection surface. Th... | 09/04/1990 |
| 4943853 | TV viewer A TV viewer having a light source and an image pick-up device is provided which is spaced from the light source at a predetermined distance, the viewer having a film holding plane and a slide holding plane which are spaced from one another along the optic... | 07/24/1990 |
| 4843528 | Illumination lamp apparatus An illumination lamp including a frame formed of plastics material support boards (10-12) mounted in parallel relation perpendicular to the main axis of the lamp and spacers (14, 16) spacing said support boards from one another. Mounted on the frame is an... | 06/27/1989 |
| 4756614 | Film projector toy A film projector toy is described, including a projector casing and a film cassette received by the casing. The film cassette includes a plurality of films movable one relative to another. Indicia representing different portions of a complete, predetermin... | 07/12/1988 |
| 4406529 | Travelling-matte processes This invention relates to an optical method of inserting a subject image into a background image to create a composite image by projecting the background image onto a light-reflecting countermatte of the subject image and causing the subject image to appe... | 09/27/1983 |
| 4349836 | Apparatus for displaying information Two microfiches carrying information recorded in different colors which can be detected independently of each other by means of color separation optical system are superposed in the direction of the optical axis of a projection optical system. The two kin... | 09/14/1982 |
| 4191457 | Bi-directional optical apparatus for altering an optically projected member An apparatus for altering an optically projected member includes a writing light which is directed at the apparent projected image of the member, which may be a transparency or workpiece or the like. The writing light is transmitted backwards through the ... | 03/04/1980 |
| 4121196 | Data base update scheme A method and apparatus for modifying data which is stored in a medium of hival quality. The original data is left unmodified, and a modification document is prepared which has addition and deletion data thereon. The original and modified data is combined... | 10/17/1978 |
| 4094597 | Method and apparatus for producing composite film images for identification A viewing device with a series of image bearing films that are individually positioned to form a composite image. Each film is wound from one roller, past the composite image forming area and onto a take-up roller. In one embodiment a single knob for the ... | 06/13/1978 |
| 4050798 | Visualizer A visualizer apparatus for composing composite illustrations has a housing with a viewing tunnel and a lamp house therein and a film gate between the tunnel and lamp house. A plurality of film strips having illustrations thereon pass through the film gate... | 09/27/1977 |
| 4050809 | Compact visualizer A visualizer has a case containing spools arranged in sets of two. A different film strip is wound around the two spools of each set and the portion of the film strip located intermediate the two spools passes through a gate where all the film strips are ... | 09/27/1977 |
| 4002401 | Multiple pattern display device A multiple pattern display device comprising a plurality of strips interlaced in a weave to expose selected sections thereof. The strips are attached to rollers at the ends thereof, and as the rollers are driven in rotation the exposed sections of the str... | 01/11/1977 |
| 3975094 | Apparatus for composing composite illustrations An apparatus for composing composite illustrations includes a plurality of film strips having successive frames, each of which possesses a separate illustration, a registration mark, and a number identifying the frame. All of the film strips pass through ... | 08/17/1976 |
| 3935583 | Apparatus for making microfiches A method and apparatus for producing a composite microfiche including a first emulsion bearing lamina on which one or more permanent data image frames are located and a second emulsion bearing lamina on which one or more updating data image frames are loc... | 01/27/1976 |
