Abstract: A head-up display (HUD) system for a vehicle comprises a windshield, a projector adapted to project an image onto an inner surface of the windshield, a HUD glare trap lens positioned between the projector and the windshield, the HUD glare trap lens adapted to allow the projected image to pass through the HUD glare trap lens to the inner surface of the windshield, and to reflect sunlight that passes through the windshield to the HUD glare trap lens, and a light trap adapted to deflect sunlight that passes through the windshield and is reflected by the HUD glare trap lens, to prevent the reflected sunlight from interfering with the HUD image projected onto the windshield.

Abstract: A stereo camera includes a first lens and a second lens, a first light shield unit and a second light shield unit respectively provided at front sides of the first and second lenses to shield light incident on the first and second lenses, a first fan and a second fan respectively provided at the sides of the first and second lenses to defrost a windshield of a vehicle, and a front case in which the first and second light shield units are provided at both sides of a main body. The first and second light shield units are attachable to or detachable from the front case, a width of the first light shield unit is less than a length thereof and is greater than a height thereof, and a distance between the first and second lenses is greater than the width of the first light shield unit.

Abstract: A portable slide projector is provided for the portable projection of standard film slides. The projector has a housing of an overall size, shape and function of a flashlight. A rechargeable battery pack provides power to a lamp as controlled through a switch. A standard film slide of the common variety, is inserted into one of a series of aligned projection slots. The projection slots are supported by a linear carousel mechanism advances the aligned film slides into position to be projected.

Abstract: An original feeding device for feeding OHP originals to the display stage of an overhead projector is capable of transportation control suitable for OHP projection. The originals are transported by a conveying film onto the display stage. In order to stop the original at the center of the display stage, after the original is detected by the registration sensor, the conveying film is advanced by an amount equal to the sum of the distance from the registration sensor to the display stage, a half of the length of the display stage and a half of the length of the original.

Abstract: According to the present invention, a film which has been inserted into a film insertion opening of a support is conveyed toward the inner part reciprocatably by a conveyance means; light is emitted from a light source and is allowed to pass through the film being conveyed; the light which has passed through the film is refracted along the film conveying direction by a refractor; and the light thus refracted by the refractor is received by an optical reader, which reads an image formed on the film. This construction permits the reduction in size of the entire apparatus.

Abstract: A slide magazine for slide frames having a peripheral edge with a peripherally extending groove on the two faces thereof and a notch at at least one edge portion of the peripheral edge, comprises a base portion with longitudinally spaced pairs of transverse rib portions. The rib portions of each pair are disposed in alignment transversely to the base portion and each pair is spaced from an adjacent pair to provide a slide frame-receiving compartment. The rib portions carry retaining ribs to hold the respective slide frame in a spill-resistant manner in the slide magazine, and each rib portion further has a projection for engaging into the groove to hold the respective slide frame in its compartment. A resilient finger in the base of each compartment has a retaining nose to engage into the notch of the slide frame to hold it in position. Slide frames can thus be inserted into and removed from the slide magazine at both sides thereof.

Abstract: A slide magazine has a base portion and partitioning walls which project upwardly away from the base portion at mutual spacings to form compartments for accommodating respective slide frames. The partitioning walls are of a height which is adapted to the slide frames and at their ends remote from the base portion are connected together by a strip-shaped holding portion extending over the length of the slide magazine so each compartment can be loaded and unloaded from both sides. To prevent the slide frame in a compartment from falling out laterally, provided at each side of each compartment is at least one resilient retaining portion in the form of a resilient finger with a retaining nose arranged to engage the slide frame.

Abstract: An exposure apparatus for use in fabricating a printed circuit board. A thermally-written liquid-crystal light valve is provided in which a pattern is formed by opaque portions and transparent portions. A writing optical system directs a heating spot light onto the light valve. The light valve and/or the heating spot light is movable, relative to the other. A projecting optical system is arranged which transmits a luminous flux emitted from a light source, through a liquid-crystal layer within the liquid-crystal light valve. The projecting optical system illuminates a subject with the transmitted luminous flux.

Abstract: An exposure apparatus for use in fabricating a printed circuit board. A thermally-written liquid-crystal light valve is provided in which a pattern is formed by opaque portions and transparent portions. A writing optical system directs a heating spot light onto the light valve. The light valve and/or the heating spot light is movable, relative to the other. A projecting optical system is arranged which transmits a luminous flux emitted from a light source, through a liquid-crystal layer within the liquid-crystal light valve. The projecting optical system illuminates a subject with the transmitted luminous flux.

Abstract: A slide projector having a projector frame and a light source and lens assembly mounted on the frame which includes a cassette having a plurality of slide frame receptacles for receiving slide frames therein. The cassette is movable so as to bring selected slide frames into a dispensing position. A frame grabber mounted on the projector frame is movable in a direction perpendicular to the lens axis from a projection position in which an image of an engaged slide can be projected to a dispensing position in which slide frames can be sequentially brought into alignment with the grabber. Once engaged by the grabber, a selected aligned slide frame can be extracted from the cassette and moved to the projection position.

Abstract: An apparatus for viewing microfiches held in a cassette has a housing defining a rear seat for the cassette holding the microfiches and having a front viewing area, an optical system on the housing for viewing a microfiche in the area, a holder constructed to carry one of the microfiches displaceable on the housing in the area with respect to the optical system for presenting selected portions of a microfiche carried by the holder to the optical system, and a selector in the housing for separating a selected microfiche in the cassette from the other microfiches in the cassette. A drive support is rotatable about and displaceable along an upright axis between the viewing area and the cassette-holding seat and has a pair of generally diametrally opposite arms having outer ends provided with respective drive rollers.

Abstract: The invention relates to a parallelepipedic tray intended to accommodate slides (7) which are to be viewed. The tray mainly comprises an upper wall (1) and a lower wall (2) each of which has grooves (6). The slides can be inserted in or removed from the tray via either of two open side surfaces, and to prevent the slides from dropping out when the tray is being handled, the tray has two flaps (8 and 9). Such a tray can be used on a slides viewer which has two carriages (22 and 23) to support and guide the trays, which carriages are disposed symmetrically on either side of optical system (28).

Abstract: A device for displaying sheet opaque pictures in which images of scenes thereon are transmitted from a housing onto an exterior display. A picture exchange magazine has a display window at the picture scene such that the top of a stack of pictures is confined at the window and the remainder are confined behind it. The magazine includes first and second frame members, the latter being relatively reciprocable parallel to the window and picture scence for cyclic exchange of the top picture in the magazine. A release holder retains the magazine on the housing while allowing the frame members to remain relatively movable to each other.

Abstract: There is disclosed a system for storing a projection mask of the type used for printing integrated circuit patterns on silicon wafers. A special cassette package permits the mask to be stored in a clean sealed environment. A delivery system transports the sealed cassette into an optical projection instrument wherein the cassette is opened and the mask advanced to the projection stage. After projection, the mask is returned and automatically sealed into the cassette. The cassette may be evacuated or, alternatively, filled with a clean gas. The mask sealed in the cassette can then be stored until its use is again required.

Abstract: Apparatus having a chamber for receiving a stack of photographs which are to be sequentially moved into a projection plane whereat their images may be projected onto a viewing screen. One wall of the chamber includes a shelf which is adapted to support one end of the stack of photographs such that, upon initial loading of the stack of photographs into the chamber, the endmost photograph located closest to the projection plane is prevented from falling completely into the projection plane. The apparatus includes an indexing member which is movable into and out of engagement with the one end of the endmost photograph so as to push it off of the shelf thereby enabling it to move substantially fully into the projection plane wherein it defines an acute angle with the next adjacent photograph which is now being supported at one end by the shelf. The relationship of these two photographs is now such that only their ends, i.e.

Abstract: A magazine-type slide projector has a single slide projection accessory that is removably placeable across the magazine track. The accessory has a slide compartment positioned on the slide changing plane, and the compartment has an open top edge and an open side edge facing the slide projection position. The accessory allows manual insertion and removal of single slides through the top opening of the compartment for movement of the slides into and out of the slide projection position by the slide changing device. The projector also preferably has a storage compartment where the accessory can be conveniently stored when not in use.