Abstract: A circuit is provided to drive LEDs or diode lasers that emit light in desired wavelengths, such as the primary colors red, green, and blue, which serve as the light source for a projection display system. A display controller controls one or more series-parallel arrays of each color LED in the LED circuit with control signals to synchronize the color output of the light source with image data received from an image data source such as a personal computer. Synchronization is achieved by sending control signals to the power supply and circuit switches to sequence the color output in a single path system or adjust continuous color output in a triple path system with minimal or no reductions in the brightness of the projected image.

Abstract: Embodiments of the present invention include an apparatus, method and system relating to a projection illumination source pulsing one or more light emitting devices a plurality of times per frame.

Abstract: A method and system for a thermal architecture and user adjustable keystone in a display device is described. The system includes a screen, a lens to project images, and one or more mirrors to reflect the images projected by the lens to the screen. A mirror assembly to adjust the images projected on the screen includes a first frame to pivot about a first axis, a second frame pivotably mounted in the first frame to pivot about a second axis, and a mirror moveably mounted in the second frame to reflect an image on a screen of a display device. The mirror is adapted to pivot about the first axis and the second axis via the first frame and the second frame to adjust the images on the screen. The base to which the screen is mounted has a thermal architecture that includes a plurality of vents to allow air to flow in and out of the base and an air movement device to move air from one or more heat sources away from the screen and toward the vents.

Abstract: An assembly for a projector include a lamp having a base portion, a lamp mount coupled to the lamp, and a unitary compliant member. The unitary compliant member may be coupled between the lamp mount and the lamp with substantially evenly spaced points of contact about the base portion of the lamp. The unitary compliant member supplies an axial force through a center of mass of the lamp to couple the lamp to the lamp mount.

Abstract: A projection apparatus that includes a light source optically coupled to an integrating tunnel to output light into the integrating tunnel through a first and a second medium from a direction nonparallel to the output direction of the integrating tunnel. The first and second mediums having different indices of refraction to facilitate reflection of the output light from the light source off a reflective surface of the integrating tunnel and propagating the reflected light substantially towards an output end of the integrating tunnel.

Abstract: The present invention provides an image-rendering device for an image projector. The image-rendering device includes a body having an image receiver adapted to alternatively receive a first interchangeable data transfer device and a second interchangeable data transfer device. Each interchangeable data transfer device is adapted to enable transfer of an image to the image-rendering device. The body may further include a projector connector adapted to operably couple the image-rendering device to the image projector and a processor configured to automatically transmit the image from the image receiver to the image projector for display. In some embodiments, the image-rendering device includes a peripheral device connector configured to enable at least one peripheral device to be operably linked to the image-rendering device. The peripheral device connector may be configured to transmit an image from the at least one peripheral device to the image projector, or vice versa.

Abstract: In one example, a method for controlling temperature in a projection device, comprises measuring a plurality of temperatures in the projection device; averaging said plurality of temperatures to determine an averaged temperature; determining an error between a set-point temperature and said averaged temperature; and automatically adjusting a blower in said projection device based on said determined error. In another example, a method for controlling temperature in a projection device having a lamp and a blower comprises measuring temperature in the projection device; and selectively adjusting both a first signal to the blower and a second signal to the lamp based on said measured temperature to control temperature in the device.

Abstract: A frame assembly is provided. The frame assembly may include an inner frame disposed in a dimensionally stable relationship with a display screen where the relationship is substantially maintained during an environmental change which produces a variation in a size of the display screen. The frame assembly further includes an outer frame configured to capture the inner frame and accommodate size changes of the inner frame.

Abstract: A projection device is disclosed, wherein the projection device includes a first circuit board, a second circuit board positioned in a spaced-apart relation to the first circuit board, a first connector extending from the first circuit board generally linearly toward the second circuit board, and a second connector extending from the second circuit board generally linearly toward the first circuit board, wherein the first connector and the second connector are coupled together to form an electrically conductive pathway between the first circuit board and the second circuit board.

Abstract: An image-rendering device including a body, a connector movably coupled to the body, wherein the connector is configured to electrically and structurally couple the body to the projection device such that the body is movable relative to the connector, and an image receiver associated with the body is provided. The image receiver is adapted to alternatively receive first and second interchangeable data transfer devices, wherein each interchangeable data transfer device is configured to allow transfer of data representing an image to the image-rendering device. The image-rendering device also includes a processor and memory, wherein the memory includes a set of instructions executable by the processor to render the image from the data and to provide the image to the projection device.

Abstract: An interface tube is provided for an image display device. In one embodiment, an interface tube having an inside surface and a center region where the at least a portion of the inside surface includes light-disbursing elements. The light-disbursing elements may be configured to direct a substantial portion of reflected light away from the center region to prevent center region from exceeding a specified temperature.

Abstract: Embodiments of this invention include a system, method and apparatus for combining light paths of colored light sources through a common integration tunnel.

Abstract: A modular keypad assembly for use with a projection device is provided. This modular keypad assembly may include a user input through which a user may operate the projection device. Such a modular keypad assembly may include a elastomer keypad, a keypad support plate; and a keypad circuit board.

Abstract: A method for interfacing a device to a projector including identifying a network to which the device is connected, identifying at least one projector on the network, identifying a status of at least one projector, enabling selection of at least one projector based on the identified status, and transmitting data to at least one projector depending on whether it is selected.

Abstract: The wide angle lens system described herein allows projection devices (e.g., rear projection display devices) to be more compact than would otherwise be possible. The lens system includes a wide angle lens stage and a relay lens stage. When operating as a projection device, the relay lens stage projects a distorted intermediate image to the wide angle lens stage, which projects the image for display. The distortion cause by the relay lens stage compensates (i.e., is approximately equal and opposite) for the distortion caused by the wide angle stage. The distortion can be the image shape and/or the focal plane. When operating as a taking device, the wide angle stage provides a distorted image to the relay lens stage, which compensates for the distortion and provide a less distorted, or even non-distorted image, for capture.

Abstract: A projection apparatus having three light source units optically coupled to an integrating tunnel. The three light source units to output three different color light bundles of different wavelengths into the integrating tunnel from a direction nonparallel to the output direction of the integrating tunnel.

Abstract: A rear projection display system is disclosed. The display system includes an image source for projecting an image, a rear reflector, and a screen configured to display the projected image. The screen includes a plurality of reflective elements configured to angularly discriminate light without regard to polarity by reflecting light incident on the screen from a first angle toward the rear reflector, and to allow light incident on the screen from a second angle to be transmitted through the screen for display.

Abstract: The invention includes a color projection system. System includes a light source, a first relay lens, disposed on a first optical path, optically coupled to the light source. System also includes a second relay lens, disposed in a second optical path, optically coupled to the first lens, the second optical path being of a predetermined vertical distance above the first optical path. The color projection system also includes a light management device, having a light entrance surface and a light exit surface, the light entrance surface optically coupled to the second lens along the second optical path, the light exit surface located on a third optical path, and the third optical path being substantially parallel to the first and second optical paths and being a predetermined distance below the second optical path. A projection lens may be optically coupled to the light exit surface of the light management device.