Abstract: A stereo projection optical system includes a polarizing beam splitter, a 2-way wheel, a digital micro-mirror device, and a total internal reflection prism. The polarizing beam splitter is configured for emitting two light outputs. The 2-way wheel includes a reflective region and a transmissive region. The reflective region is configured for reflecting the light outputs and the transmissive region is configured for transmitting the light outputs. The digital micro-mirror device is configured for superimposing spatial information on the light outputs. The total internal reflection prism configured for coupling the light outputs of the 2-way wheel into the digital micro-mirror device and transmitting a light output of the digital micro-mirror device. The stereo projection optical systems provide viewers three-dimensional images formed by two alternative polarized light beams whose polarizations are perpendicular to each other utilizing the 2-way wheel.

Abstract: A projection image position adjustment method of applying position adjustment to, using two adjustment images, two projection images on a projection surface projected to have an overlay area by two of a plurality of projectors in a multi-projection display. The method includes: a first step of providing, to the two projectors, two adjustment image data respectively corresponding to the two adjustment images each showing a pattern of specific characteristics in the overlay area when the two adjustment images are projected with an appropriate positional relationship; a second step of calculating an evaluation value correlated to the characteristics based on image capture data that is derived by capturing an image of the projection surface with the two adjustment images projected thereon by the two projectors; and a third step of subjecting the two projection images to the position adjustment based on the evaluation values.

Abstract: There is provided a projector having a point light source disposed to an edge of an optical fiber for transmitting exciting light and including a fluorescent illuminant for emitting fluorescence by being exited by the exiting light, a light collecting optical system for collecting the fluorescence emitted from the point light source, a reflective display device for reflecting the fluorescence collected by the light collecting optical system and overlapping the fluorescence with an image signal, an outgoing aperture for stopping down the fluorescence overlapped with the image signal by the reflective display device, wherein the outgoing aperture and the point light source are disposed side by side in the vicinity of the front focusing surface of the light collecting optical system.

Abstract: A projector includes: a light source that emits an illumination flux; a first lens array having plural first small lenses that split the illumination flux from the light source into plural partial luminous fluxes; a second lens array having plural second small lenses corresponding to the plural first small lenses; a superimposing lens that superimposes each partial luminous flux from the second lens array onto an illuminated area; an electro-optic modulator that modulates the light superimposed by the superimposing lens in accordance with image information; and a projection system that projects the light modulated by the electro-optic modulator; wherein the projector further has an optical lens arranged in an optical path between the superimposing lens and the electro-optic modulator, and the optical lens, together with the superimposing lens, forms a superimposing system that has a different focal length from the focal length of the superimposing lens and that has substantially the same focal position as the

Abstract: A control unit presents a visual stimulus onto a film adhered on an inner surface of a windscreen glass of a vehicle, and controls the visual stimulus so as to allow a driver to perceive the visual stimulus approaching the driver or receding therefrom in response to detection results of a driving environment detection unit, a vehicle status detection unit and a driver status detection unit. In such a way, visually induced vection can be produced for the driver by the visual stimulus. Accordingly, a drive sense of the driver can be adjusted in response to a vehicle state quantity, a driving environment and a driver state.

Abstract: An optical path length adjuster enables electro-optical control of a physical path length between two optical elements, suitable for use in the adjustment of an optical path length within three dimensional display devices that generate a virtual image within a defined imaging volume. The adjuster varies an optical path length between an input optical path and an output optical path and includes: a first polarization switch for selecting a polarization state for an input beam on the input optical path; first and second beam splitters having at least two possible optical paths of different lengths therebetween, for passing the input beam along a selected one of said at least two possible optical paths according to the selected polarization state of the input beam and for providing an output beam of light, on said optical output path, that has traveled along the selected optical path.

Abstract: Amber light LEDs have a higher luminance than red light LEDs. A vast majority of images displayed on television consists of colors that can be created using amber, green and blue components, with only a small percentage of red. In one embodiment of the present invention, the typically red primary light source in a projection display system is augmented with an amber light source. Green and blue primary light sources are also provided. All the light sources are high power LEDs. The particular mixture of the red and amber light is accomplished by varying the duty cycles of the red LEDs and the amber LEDs. If the RGB image to be displayed can be created using a higher percentage of amber light and a lower percentage of red light, the duty cycle of the amber LEDs is increased while the duty cycle of the red LEDs is decreased. Light/pixel modulators for creating the full color image from the three primary light sources are controlled to compensate for the variable amber/red mixture.

Abstract: A lighting device used for an image display device including a light modulator that modulates light emitted from a light source device includes: a diffractive optical element on which the light emitted from the light source device is made incident and that generates diffractive light from the light made incident thereon and lights the light modulator with the diffractive light; and a light shielding member that is arranged between the diffractive optical element and the light modulator and shields 0-th order light emitted to the light modulator.

Abstract: A light-quantity adjusting function of a diaphragm used for light quantity control for improving the contrast of a projected image is controlled to cancel light quantity variation due to variation of the driving power of the light source for increasing the service life. This control keeps the quantity of light coming into a display element at a constant value and achieves both service life extension of the light source and image projection having no brightness fluctuation.

Abstract: A remote instruction system includes a control portion. The control portion transmits an image captured by an image capturing portion provided for capturing the image of a subject to a remote terminal, and controls a projection portion to project an annotation image onto the subject according to an instruction issued from the remote terminal on the basis of the image captured. The control portion measures a reflection characteristic of a surface of the subject on the basis of the image captured, and converts a color of the annotation image to be projected onto the subject on the basis of a comparison result between the color of the annotation image instructed by the remote terminal and the reflection characteristic of the surface of the subject to project the annotation image onto the subject.

Abstract: An optical projection apparatus is provided, where a reflective light valve, a light deflecting device and a lens set are arranged on an optical path of the light beam providing by an illuminating system. The light deflecting device is located between the illuminating system and the reflective light valve, and the lens set is located between the reflective light valve and the light deflecting device. When the light beam is incident to the reflective light valve through the light deflecting device and the lens set, the light beam is converted into sub-image beams, and then the sub-image beams are reflected to the lens set. The projection lens set arranged on an optical path of the sub-image beams has a pupil located on the light deflecting device. The lens set converges the sub-image beams on the pupil and then the sub-image beams are incident to the projection lens set for imaging.

Abstract: A projector/camera system includes a projector, configured to project a sequenced image to a projection location, and a camera, located at the projection location and oriented to take an image of a region including the projector. The camera is configured to capture a sequenced image that is synchronized and out of phase with the sequenced image of the projector, thereby to minimize light interference from the projector.

Abstract: A projection image display apparatus is disclosed which enable users to observe an image in an overlap area well. The apparatus comprises a first projector which projects a first image onto a projection surface, a projection area detector which acquires a projection area onto which a second projector projects a second image in a certain area of the projection surface. Further, the apparatus comprises a projection area controller which controls a projection area onto which the firs projector projects the first image, based on an input signal from the projection area detector.

Abstract: A projecting apparatus for protecting an image onto a screen includes an image module, a first light reflection device and a lens. The image module is for providing a beam of first light. The first light reflection device has a first reflection surface disposed movably relative to the image module for reflecting the first light to form a beam of second light. The lens is for projection the image on the screen according to the second light. Moving the first light reflection device along the beam of first light or second light can adjust the location of the image on the screen in a first direction.

Abstract: Automated orientation of an image presented by a display, such as a projector, with the orientation of the display simplifies presentation of images generated by an information handling system. A display orientation sensor detects the orientation of a display so that a display orientation module automatically adjusts the orientation of an image presented by the display to align with the display orientation. For example, display orientation is sensed by an accelerometer associated with the display or by determining the attachment point of the display to a support.

Abstract: A guide convex portion is formed on a base plate in parallel to an illumination optical axis. Further, a fixed-side supporting member is provided in the base plate. A first opening is formed in an upright portion of the fixed-side supporting member. A slide supporting member can be provided on the base plate. A second opening is formed in the upright portion of the slide supporting member. By inserting a tapered rod into the second opening at its light incidence side and by moving the slide supporting member along the aforementioned guide convex portion, the slide supporting member is stopped at a predetermined position and, at this position, the slide supporting member is fixed.