Abstract: A real image projection system is provided including a projection system housing with an aperture. This device provides a real image projected into a viewable volume of space relative to the aperture. An optical assembly and an object positioning device adjacent to the optic assembly provide the real image. The object positioning device may position an object adjacent to the optic assembly in dynamic or static fashion. The optical assembly receives the light rays reflected from the object and projects a real image of the object into the viewable volume of space. The invention provides environmental visual cues to promote perception of a three-dimensional image. The invention further includes a secondary mirror for use in reducing or minimizing the overall size of the system housing.

Abstract: A motion detector camera includes a camera mechanism mounted inside a housing, a motion detector exposed on a surface of the housing, and a controller for controlling the camera mechanism in response to signals received from the motion detector. The motion detector camera can include a first power source connected to the camera mechanism and a separate, second power source connected to the motion detector. The camera can include an activity counter mounted to the housing. The controller activates the camera mechanism when the controller receives a triggering signal from the motion detector, or the controller activates the activity counter and does not activate the camera mechanism when a triggering activity occurs. The camera can include a shutter button located external to the housing to manually activate the camera mechanism. The camera can include digital camera electronics. A camera support can be used to removably mount the camera to an object such as a tree.

Abstract: Disclosed is a pattern forming method, in which a mask blank for preparation of a photomask is exposed in a desired pattern to form a mask pattern on the mask blank. Position measuring marks are formed on the diagonally facing corners of a main surface of the mask blank to detect a defect on the main surface of the mask blank. The relative positions of the detected defect and the mask pattern that is to be formed on the mask blank are compared, and the pattern position is selected such that the defect overlaps with the pattern. Then, the position measuring marks are measured to calculate the exposure position, and exposure treatment is applied to the selected position.

Abstract: Disclosed herein is a color laser display that comprises a red laser light source for emitting red laser light, a green laser light source for emitting green laser light, and a blue laser light source for emitting blue laser light. An excitation solid laser unit (which has a solid-state laser crystal doped with Pr3+ and a GaN semiconductor laser element for exciting the solid-state laser crystal), a fiber laser unit (which has a fiber with a Pr3+-doped core and a GaN semiconductor laser element for exciting the fiber), or a semiconductor laser unit (which has a semiconductor laser element, employing a GaN semiconductor, and a surface-emitting semiconductor element), is employed as at least one of the red laser light source, the green laser light source, or the blue laser light source.

Abstract: A tilted polarization splitter (13) for use with a projection lens (15) and a light modulating panel (11) is provided. The polarization splitter has an ultra thin substrate (14) whose thickness is chosen so that the depth of focus of the projection lens in imager space is greater than the astigmatism produced by the splitter at its tilted angle. The polarization splitter can be a wire grid polarizer, polarization coating, or birefringence film carried by or formed on the ultra thin, plane parallel plate substrate.

Abstract: A de-pellicle tool for removing a pellicle from a reticle during the formation of circuit patterns on substrates in the fabrication of integrated circuits. The de-pellicle tool of the present invention comprises a support frame on which is mounted the reticle and the pellicle supported on the reticle. A pair of handle-actuated lift pins on opposite sides of the support frame are extended into respective pin openings in the pellicle frame, after which the handles are pushed downwardly to raise the lift pins and lift the pellicle frame from the reticle. Accordingly, no moving parts contact the reticle during the pellicle-removing procedure, preventing scratching or other damage to the reticle.

Abstract: A telescopically collapsible image projector has a tri-segmented body. Within the body is mounted a light source, an imaging device such as a fully colour LCD display capable of receiving electronic signals representing images for display, keystone correction means, focusing means, and heat dissipation means. In its operating configuration the body segments are fully extended and a rigid optical pathway is established. Upon full extension, heat sinks in the form of air voids are created to collect radiated heat from operating components of the projector. A forced air system comprising a fan/motor combination draws cooling air in through the body of the projector and exhausts heated air through an exhaust port. In its stowed configuration, the heat sink air voids are used as stowage space to enable the body segments of the projector to telescopically collapse within each other forming a compact object with a small stowage foot print.

Abstract: An interactive display system includes a sensor for sensing a relationship between a mobile coordinate frame fixed to a moving projector, and a stable coordinate frame fixed to a stationary display surface in the real world. An output image to be projected on the display surface is partitioned into a black image portion having a fixed relationship to the mobile coordinate frame, a stable image portion within the block image portion having a fixed relationship to the stable coordinate frame, and a mobile image portion within the stable image portion having a fixed relationship to the mobile coordinate frame. The mobile portion can be used as a pointer within the stable portion in a mouse-cursor like manner.

Abstract: An air bearing stage device which is suitable for use with a vacuum environment is disclosed. According to one aspect of the present invention, a stage apparatus includes a table that is positioned in a system vacuum chamber, a first rod that carries the table, and first and second plates that support the first rod. The first plate includes an air bearing surface that is held against the first side of a first wall by a first vacuum force. A first drive mechanism drives the first plate to move the first rod in a first direction, and also drives the second plate to move the first rod in the first direction, while a second drive mechanism which includes a second rod and a first linear motor causes the second rod to move the first rod in a second direction.

Abstract: Disclosed herewith is a rear projection optical system for being installed at a rear side of a screen of a rear projection apparatus. The rear projection system comprises: a display panel; a illuminating optical system for illuminating the display panel, the illuminating optical system being decentered from a screen center in both of a horizontal direction and a vertical direction; and a projection optical system, decentered from the screen center in the vertical direction, for projecting a display image on the display panel projected by the illuminating optical system onto a screen through a rear mirror positioned at a position that is the center of the screen. The projection optical system comprises a dioptric system, a deflection mirror, and a curved mirror in this order from the display panel to the rear mirror, and the curved mirror is decentered from the screen center in the vertical direction but centered against the screen center in the horizontal direction.

Abstract: A film assembly comprises a pair of film containers (13, 15) with a length of film extending therebetween with a major part of the film wound in one of the containers, with a backing sheet (17) of flexible material secured to each container to extend therebetween.

Abstract: The present invention relates to projection systems for displaying visual information in a variety of applications in order to reduce the projection area, the weight and the dimensions thereof. In one embodiment, the projection system for producing an external surface projection on a visualization screen comprises a flat and thin visualization screen for carrying out projection on both sides. Images can be watched on the left side and on the right side of this screen. From the surface of the screen and on the left and right sides thereof, projectors are provided for projecting images simultaneously on both sides of the screen. Light diffusers are provided on both sides of the screen. The projections are converted through the optics of the projectors so as to form reduced-divergence projection beams which are entirely captured by the light diffusers and which are diverted and diffused at wide angles of image observation ranges.

Abstract: A method of detecting a focal point position of a projection optical system. The method includes moving an object having a first mark in a direction of an optical axis of the projection optical system, illuminating the first mark with light, taking an image of the illuminated first mask through the projection optical system, using an image pickup unit, with respect to each position of the object, calculating a contrast-related value relating to contrast of a first signal corresponding to the first mark in each of the images, measuring an intensity of the light with respect tot each of the images, based on a second signal different from the first signal, correcting the contrast-related value of each of the images, based on the corresponding intensity of the light, and detecting the focal point position, based on the corrected contrast-related value of each of the images.

Abstract: A viewfinder assembly mounting system includes a mounting hole formed at least in one of a camera body and a base barrel in a direction of an optical axis, a viewfinder assembly provided with a guide hole corresponding to the mounting hole of the base barrel; and a guide member inserted and coupled to the mounting hole and the guide hole in the direction of the optical axis. The guide member is either a strobe guide member or a viewfinder lens guide member for respectively guiding a motion of the strobe and the viewfinder lens in a direction of an optical axis by synchronizing with the barrel.

Abstract: The invention relates to a refractometer comprising an optical module (4) arranged floatingly inside a housing structure, which module comprises an optical window (2) to be positioned in a process fluid (3), and means for forming an illuminating beam and for directing it into the process fluid (3) through the optical window (2) and for directing back the part of the illuminating beam that is reflected from the process fluid, and further, means for watching the image formed in said manner. The optical module (4) is arranged to be supported against the housing structure by means of sealing (5) arranged between the optical window (2) and the housing structure. In order to provide a device suitable for difficult conditions, the housing structure part (6) in contact with the process fluid (3) against which the optical window (2) is arranged to be supported via sealing (5) is formed of a material that is chemically durable, mechanically rigid and durable and has good thermal conductivity.

Abstract: A disclosed photographing apparatus has a LCD display, a select member, and a controller. The display displays information about a photographic condition, in arbitrary display form using a dot-matrix. The select member selects one display mode among a plurality of display modes. In each mode of the plurality of display modes, display forms are different to each other, standard information required for photographing is displayed common to every display mode, and at least one information inherent to each display mode is displayed. The controller controls the display to display the display mode selected by the selector, and at a time of starting the camera, to display a display mode which has been displayed when the camera was previously switched off.

Abstract: A spatially modulated light beam is projected, reflected, and redirected through a prismatic optical panel to form a video image for direct viewing thereon.

Abstract: A lens barrel includes a first ring member having a ring frame portion and at least one leg portion which extends from the ring frame portion in an optical axis direction; and a second ring member, which is relatively movable in the optical axis direction with respect to the first ring member, the second ring member having at least one slot which extends in the optical axis direction, the leg portion being inserted into the slot so that the leg portion can move in the optical axis direction along the slot. The second ring member is coupled to the first ring member so that the second ring member is positioned substantially within a radial thickness of the leg portion.

Abstract: A projection television set having an enclosure housing a screen, an optical unit and a mirror, wherein the optical unit and mirror are capable of projecting an image onto the screen. The enclosure is preferably constructed from hollow plastic extruded panels. In addition, the enclosure preferably includes a duct extending upwardly from a lower portion of the enclosure to exhaust heat radiating from components housed therein to the exterior of the enclosure toward the top of the enclosure.

Abstract: A method forms a cluster from a set of projectors. Each projector in the set includes a projector sub-system in a fixed physical relationship to a camera sub-system, and a communication sub-system for sending and receiving messages. A calibrate message is received in the projectors via the communications sub-system. A ready message is broadcast by the projectors using the communications sub-system. A structured pattern is projected sequentially by each of the projectors on a display surface using the projector sub-system. An input image of the structured pattern is acquired sequentially by each of the projectors using the camera sub-system. The projectors are globally aligned with each other and the display surface according to the input images.