Abstract: An improved autostereoscopic display apparatus (10) forms left and right virtual images for pupil imaging by forming, through a beamsplitter (16), a real intermediate image near the focal surface of a curved mirror (24). A circular polarizer (90) is disposed at a position between viewing pupils (14l, 14r) and the beamsplitter (16), minimizing glare due to stray light reflection from the curved mirror surface.

Abstract: The invention relates to a projection screen and a projection type display device, wherein projection light projected through a single projector is intensively diffused into at least two areas of view, each having a relatively narrow extent, so that the same image can be simultaneously viewed with both eyes or by at least two viewers. The projection screen 1 comprises a plurality of Fresnel concave mirrors 2L and 2R superposed on the same substrate in a mutually decentered fashion, and a diffusing plate is located on the side of the projection screen 1 on which projection light is incident or at which projection light is reflected.

Abstract: On a transparent substrate (1), a first alternating periodic layer (5) including low-refractive-index layers (2) and high-refractive-index layers (3), a second alternating periodic layer (6) including the low-refractive-index layers (2) or the high-refractive-index layers (3) and intermediate-refractive-index layers (4), and a third alternating periodic layer (7) including the low-refractive-index layers (2) and the high-refractive-index layers (3) are provided in this order. The refractive index of the intermediate-refractive-index layers (4) is higher than that of the low-refractive-index layers (2) and lower than that of the high-refractive-index layers (3). Furthermore, the intermediate-refractive-index layers (4) contain materials for the low-refractive-index layers (2) and the high-refractive-index layers (3).

Abstract: An image display system includes a light valve 14 for providing image information to light converged by a converging lens 13 and for emitting the light, a projective optical system 20 including a refractive optical lens 21 for projecting the light from the light valve 14 and a convex mirror 22 for reflecting the light from the refractive optical lens 21 by using a reflecting surface thereof having negative power and for enlarging and projecting the reflected light, and a display 30 for receiving the light from the projective optical system 20 by way of a receiving surface 30A, wherein the light valve is placed away from an optical axis 23 of the projective optical system 20 and between a front surface of the display 30 and a rear surface of the projective optical system 20.

Abstract: The invention provides a lens device of a projector for projecting light that has been modulated and emitted by a display device, wherein said lens device has an optical axis and is arranged telecentric to rays of light emitted from said display device, said lens device has a diaphragm mechanism having an aperture at such a position that the lens device causes principal rays emitted from various locations on the display device to intersect with the optical axis, and said aperture is substantially trapezoidal.

Abstract: A projector includes: an illumination device including a light source that emits a parallel illuminating light beam, lens integrators each having a first lens array to split the illuminating light beam into a plurality of secondary light beams, a second lens array, and a superimposing lens that superimposes the secondary light beams; an electro-optic modulating device that modulates the illuminating light beam; a projection optical system that projects the modulated illuminating light beam; a mode-selecting device that selects a normal mode in which an image-forming region is illuminated in lengthwise or crosswise directions, and a persistence-of-vision-relaxed mode in which the image-forming region is illuminated in lengthwise or crosswise directions and partially illuminated in the other direction; and a scanning system to scan the image-forming region of the electro-optic modulating device along the other direction in synchronization with a frame rate of the electro-optic modulating device when in a persis

Abstract: A color separating-combining optical system is configured to separate illumination light into a plurality of color spectrums, guiding these color spectrums to respective image display elements, and combining the color spectrums modulated by the image display elements. The system includes a first polarization separating optical system that reflects the first color spectrum from the separating optical system to a first image display element and transmits the first color spectrum from the first image display element to the combining optical system. Similarly, a second polarization separating optical system is provided that reflects and transmits the second color spectrum. The degree of linear polarization of a reflected color can be maintained higher than that of another, and/or an antireflection element can be included in the path of reflected light.

Abstract: A system for visualizing one or more images to one or more viewers in motion, comprises: (a) an extended span of screen; (b) a sequence of projectors mounted along the screen; (c) at least one device for receiving a series of images; and (d) a computer for dividing the frame of each image in the series of images into a number of sub-images and shifting the dividing lines on the frame of each image, frame by frame, according to a function of the moving velocity of the viewers, such that the series of images are split into a number of series of shifted sub-images; and (e) projectors for projecting each series of the shifted sub-images on the screen separately by one of the corresponding projectors, such that the images are displayed on the screen, and the display positions move on the screen according to a function of the velocity of the viewers.

Abstract: An outer suspension type lens shielding mask for a projection apparatus includes a sheet body and a holding element, in which a rectangular hole is opened in the sheet body. The sheet body is combined with the holding element together for being fixed on a projection apparatus. Another outer suspension type lens shielding mask has a base plate, in which a rectangular hole is opened in the middle part thereof, upper and lower adjustable plates, installed behind the base plate and an open rectangular notch is respectively disposed at the middle parts of the upper and the lower adjustable plates, and an adjustment mechanism, including a plurality of connecting elements connected to the base plate and the upper and the lower adjustable plates for adjusting the relative positions of the upper and the lower adjustable plates on the base plate.

Abstract: A projector incorporating a prism and a plurality of light valves for modulating light that passes through the prism, wherein a dust-sealed airspace is provided between an imaging surface of each light valve and the prism for providing air channels to cool respective ones of the light valves.

Abstract: A LCoS projection display system using two LCoS chips and software or firmware to control the chips so that any defects in the first chip that result in incorrectly displayed pixels are corrected by production of compensating illumination provided by the second LCoS chip.

Abstract: A lighting includes: a light source device; a concave lens having a light-incident surface formed from a hyperboloid of revolution to make the luminous flux from the light source device almost parallel; a first lens array; and a second lens array, with a concave surface is present between the light-incident surface of the concave lens and the first lens array, and the concave surface causes, together with the light-incident surface of the concave lens, the luminous flux to travel along an optical path heading to an outer side rather than an optical path parallel to an optical axis of the light source device, while causing the luminous flux to pass through the small lenses that correspond to each other in the first lens array and the second lens array.

Abstract: To reduce the color break-up and to provide high quality projection images. A method of driving a spatial light modulator, including generating a sub-frame pulse signal for a first colored light R1 through R8, B1 through B8, generating a sub-frame pulse signal for a second colored light G1 through G8, arranging the sub-frame pulse signals for the respective colored light so that at least three of the sub-frame pulse signals for the first colored light R1 through R8, B1 through B8 adjoin either one of the sub-frame pulse signals for the second colored light G1 through G8 during at least one frame of the image, and driving a plurality of movable mirror elements in accordance with the sub-frame pulse signals for the respective colored light arranged in arranging the sub-frame pulse signals, the movable mirror elements being alternatively moved at least to a first reflecting position and a second reflecting position.

Abstract: A digital light processing projector comprising a light source, a splitter module, a plurality of total internal reflection (TIR) prisms and digital mirror devices (DMDs), a combiner and a projection lens is provided. The splitter module is disposed in the light path of the light after the light source to split the light into a plurality of color lights. Each color light is incident to the total reflection plane of the TIR prism with an incident angle larger than the critical angle, and then is totally reflected to the DMD. Thereafter, each color light is reflected by the DMD being incident to the total reflection plane of the TIR prism with an incident angle smaller than the critical angle, and then passes through the TIR prism directly. The color lights passing through the TIR prisms are combined by the combiner and then projected by the projection lens.

Abstract: An apparatus providing programmable illumination pattern generation for the manipulation of colloidal particulates and biomolecules in suspension between electrodes, is disclosed. The apparatus implements LEAPS (Light-controlled electrokinetic assembly of particles near surfaces), which relies on: AC electric field-induced assembly of particles the patterning of the electrolyte/silicon oxide/silicon interface to exert spatial control over the assembly process; and the real-time control of the assembly process via external illumination. The apparatus generates patterns of illumination and projects then onto planar surfaces, i.e., a LEAPS electrode.

Abstract: The invention provides systems and methods for generating a visual image that is made to appear to be situated behind an architectural structure, such as a wall of a building, and is viewed through windows thereof. The image appears as an oversize object relative to the actual object. The system and method include an image recorder and/or a pre-recorded image, an image display apparatus, and a mask. Sound can be provided as required to complete the illusion. The image can be a still image or a moving image. In some embodiments, two viewers can see the image from opposite sides of the structure, each perceiving the image as being on the side opposite to the viewer. The system includes a video capture device and a display and an optional audio system for showing the person whose image is being projected the giant image as seen and heard by a viewer.

Abstract: An image projector that modifies projected images. An imaging device preferably senses information about a projection screen upon which an image is projected. Based on the sensed information about the projection screen, the projector modifies the image in a desired manner, such as rescaling, or correcting distortion in, the projected image.

Abstract: A projection type image display apparatus including a scanning mirror and a projection lens adapted to project an image on an image-displaying screen by scanning with a laser beam, and a detector adapted to detect the presence or absence of an intruding object between the projection means and the screen, wherein detection by the detector is conducted relative to a position preceding the laser beam in the scan direction of the laser beam.

Abstract: System and method for calibrating the orientation or arrangement of slides in a storage receptacle. A reflective marking is asymmetrically applied to a side or edge of a slide, forming reflective and non-reflective sections. Light is directed to the slide, and a sensor detects light that is reflected by the reflective sections and generates signal or data representing an orientation of the slide. A controller processes the signal or data to determine whether the slide is properly oriented on a tray in the storage receptacle, e.g., whether the slide is flat or at an angle, upside down, rotated. The marking can be reflective ink, paint or an adhesive. Reflective and non-reflective markings can also be formed by laser etching, polishing, or by frosting.

Abstract: An image-rendering device including a body, a connector configured to removably attach the body to a projection device, the connector movably coupled to the body such that the body is movable between at least a first position and a second position relative to the connector. The image-rendering device further includes an image receiver associated with the body, wherein the image receiver is configured to allow transfer of data representing an image to the image-rendering device. In some embodiments, the image receiver is a wireless receiver. The wireless receiver may be an integrated wireless network card or a removable wireless network card.