Abstract: A projection display includes a transmissive first light valve and a reflective second light valve that are disposed adjacent to a polarization beam splitter prism and that are used to modulate first, second and third color components. The modulated first, second and third color components are then obtained from one side of the polarization beam splitter prism.

Abstract: An illuminating apparatus is adapted to supply input light to a light-processing unit of a projection display, and includes a lighting unit, a lens unit and a light integrator. The lighting unit includes a plurality of lamp bases, each of which is operable so as to generate forwardly directed light rays. The lens unit is adapted to be disposed between the lighting unit and the light-processing unit so as to receive the forwardly directed light rays from the lamp bases. The light integrator has an input side facing the lens unit so as to receive the light rays that pass through the lens unit, and an output side adapted to face the light-processing unit. The light rays that are received from the lens unit are radiated by the light integrator as an evenly distributed light source at the output side for reception by the light-processing unit.

Abstract: In a projection display that includes a polarization beam splitter prism and two reflective light valves, each of a pair of dichroic beam splitters is disposed between the polarization beam splitter prism and a respective one of the reflective light valves. The arrangement as such ensures that only a minimal amount of light leakage components will reach a projection lens of the projection display so as to achieve optimum image quality.

Abstract: A display apparatus includes a light source, a light integrator, a positive lens unit, and a liquid crystal display panel that are arranged in sequence and that are aligned along an optical axis. Light from the light integrator passes through the positive lens unit before reaching the display panel. The positive lens unit includes at least first and second lens components, each of which is formed from at least one lens member. The first lens component is movable relative to the light integrator along the optical axis, and the second lens component is movable relative to the first lens component along the optical axis for forming an image with a desired focusing, brightness and magnification factor on the display panel.

Abstract: A projection display includes a transmissive first light valve and a reflective second light valve that are disposed adjacent to a polarization beam splitter prism and that are used to modulate first, second and third color components. The modulated first, second and third color components are then obtained from one side of the polarization beam splitter prism.

Abstract: In a three-prism projection display, input light is separated by a polarization beam splitter prism into a first color component, which is received by a first dichroic beam splitter prism and processed by a first light modulator, and second and third color components, which are received by a second dichroic beam splitter prism and processed by second and third light modulators, respectively.

Abstract: In a projection display with two dichroic mirrors, input light is separated by a polarization beam splitter into a first color component, which is received by a first dichroic mirror and processed by a first light modulator, and second and third color components, which are received by a second dichroic mirror and processed by second and third light modulators, respectively.

Abstract: In a projection display, input light is separated by a polarization beam splitter prism into first and second color components, and a third color component. The first and second color components, together with a light leakage component that is associated with the third color component, are directed by the polarization beam splitter prism to a color synthesizing prism or a color splitter prism set, which then separates the first and second color components and the light leakage component so as to travel in three different directions, respectively. The first and second color components from the color synthesizing prism or the color splitter prism set, and the third color component from the polarization beam splitter prism are processed by reflective first, second and third light modulators, respectively.

Abstract: An illuminating module is adapted for use in a display apparatus, and includes first and second reflectors, and an omnidirectional light source. The first reflector has a hemispherical first reflecting surface and a first focal point. The second reflector has a curved second reflecting surface that faces the first reflecting surface, and a second focal point that is coincident with the first focal point. The light source is coincident with the first and second focal points. A first portion of light rays from the light source radiates toward the second reflecting surface, and is reflected by the second reflecting surface to travel along an optical axis. A second portion of the light rays from the light source initially radiates toward the first reflecting surface, and is subsequently reflected by the first reflecting surface back to the light source so as to combine with the first portion of the light rays.

Abstract: In a projection display, input light is separated by a polarization beam splitter prism into first and second color components, and a third color component. The first and second color components, together with a light leakage component that is associated with the third color component, are directed by the polarization beam splitter prism to a color synthesizing prism or a color splitter prism set, which then separates the first and second color components and the light leakage component so as to travel in three different directions, respectively. The first and second color components from the color synthesizing prism or the color splitter prism set, and the third color component from the polarization beam splitter prism are processed by reflective first, second and third light modulators, respectively.

Abstract: An illuminating apparatus is adapted to supply input light to a light-processing unit of a projection display, and includes a lighting unit, a lens unit and a light integrator. The lighting unit includes a plurality of lamp bases, each of which is operable so as to generate forwardly directed light rays. The lens unit is adapted to be disposed between the lighting unit and the light-processing unit so as to receive the forwardly directed light rays from the lamp bases. The light integrator has an input side facing the lens unit so as to receive the light rays that pass through the lens unit, and an output side adapted to face the light-processing unit. The light rays that are received from the lens unit are radiated by the light integrator as an evenly distributed light source at the output side for reception by the light-processing unit.

Abstract: An illuminating apparatus includes a plurality of light sources that generate a plurality of primary color light components, a reflector unit for receiving the primary color light components from the light sources, and an integrator having an input side to receive the primary color light components reflected by the reflector unit.

Abstract: An illuminating apparatus includes a lighting unit, first and second reflectors, and an integrator. The lighting unit includes a plurality of lighting members that are spaced apart from each other and that are operable so as to produce forwardly directed parallel light rays. The first reflector is disposed in front of the lighting unit, and has a central region formed with an opening, and a peripheral region around the central region and formed with a first reflecting surface that confronts the lighting unit and that reflects the forwardly directed parallel light rays from the lighting members to converge rearwardly. The second reflector is disposed behind the first reflector and is registered with the central region of the first reflector. The second reflector is formed with a second reflecting surface that faces the opening such that the light rays reflected from the first reflecting surface are further reflected by the second reflecting surface so as to pass through the opening.

Abstract: A triple-lens type projection display includes a source for generating a white primary beam output, a first beam splitter for splitting the white primary beam output into a first color component and a secondary beam output, a second beam splitter for splitting the secondary beam output into a second color component and a third color component, first, second and third light modulators for modulating the first, second and third color components, respectively, a first projection lens for receiving the first color component from the first light modulator, a second projection lens for receiving the second color component from the second light modulator, and a third projection lens for receiving the third color component from the third light modulator. Each of the first, second and third color components has a respective optical path length that is measured from the first beam splitter to a respective one of the first, second and third light modulators.

Abstract: An illuminating apparatus includes a plurality of light members spaced apart from each other and operable so as to produce forwardly directed parallel light rays, a parabolic reflector disposed in front of the light members for receiving the forwardly directed parallel light rays from the light members, and an integrator unit. The parabolic reflector has a reflecting surface that confronts the light members. The integrator unit has an input side to receive the light rays reflected by the reflecting surface of the parabolic reflector.

Abstract: An illuminating apparatus that utilizes a plurality of light sources to generate bright input light for a projection display. The apparatus includes a lighting unit, a first reflector having a central region formed with an opening, a peripheral region around the central region for reflecting light from a plurality of lighting members to converge rearwardly, a second reflector disposed behind the first reflector and facing the opening in the first reflector, such that the light rays pass through the opening in the first reflector, and an integrator disposed in front of the first reflector to receive the light rays which passed through the opening in the first reflector.

Abstract: A projection display includes a projection lens and first and second light modulators on three sides of a color recombination unit. First and second blower units are respectively disposed on two sides of the projection lens for cooling the light modulators.

Abstract: A high-resolution variable focus lens system that has an extra-long back focal length with a telecentric design. The lens system includes three groups of lenses between an object (screen) and an image (a liquid crystal panel). The first group of lenses, comprising three lenses and having a negative power, is used for focusing and zooming of the lens system. The second group of lenses, comprising two lenses and having also a negative power, is used for zooming of the lens system. The third group of lenses, comprising six lenses and having a positive power, is similarly used for zooming of the lens system.

Abstract: A projection screen includes a lens base having a front side, a rear side, and an array of bores that extend from the rear side to the front side. Each of the bores tapers in a direction from the rear side to the front side. The front side is formed with a plurality of windows, each of which is aligned and communicated with a respective one of the bores. Light that enters the bores from the rear side of the lens base is subjected to multiple total internal reflections as the light propagates along the bores prior to exiting the lens base at the windows.

Abstract: A projection display includes a light source for generating a beam output that contains first, second and third color components, a color separation/synthesizing prism unit having a color separation part for separating the beam output from the light source into the first, second and third color components that exit the prism unit in three different directions, and first, second and third light modulators for modulating the first, second and third color components that exit from the color separation part. The prism unit further has a color synthesizing part that receives the modulated first, second and third color components from the light modulators and that synthesizes the modulated first, second and third color components so as to form an output beam. A projection lens receives the output beam from the color synthesizing part, and is used to project a color image. The first, second and third color components have equal optical path lengths measured from the light source to the respective light modulator.