Abstract: A system for illuminating an object is provided, the system comprising a coherent or semi-coherent light source and a first diffuser positioned relative to the coherent or semi-coherent light source so as to receive said coherent or semi-coherent light. The first diffuser may diffuse the light to produce diffused light. An actuator having a moveable element, such as a moveable reflective surface, may be positioned to project the diffused light onto an object, and may be moved to project light onto different portions of the object. This movement may be performed with such rapidity that it is not perceived by a person viewing the object. Rather, the entire object would appear to be illuminated. Movement of the element may be controlled by a computer, and may be performed according to a predefined routine.

Abstract: An image display system includes: an image input apparatus and an image display apparatus connected thereto that displays an image obtained. The image input apparatus includes an image pickup unit, a movable holding unit selectively brought into an imaging state or a non-imaging state and a state detection unit. A control unit brings the image input apparatus and the image display apparatus into a disconnected state where a transmission path for transferring data between the image input apparatus and the image display apparatus is logically disconnected when in the non-imaging state, and brings the image input apparatus and the image display apparatus into a connected state when in the imaging state.

Abstract: A projector includes: an outer housing; and a plurality of handles provided on an upper surface of the outer housing to hold the projector, wherein each of the handles includes a pair of attachment members standing on the upper surface, and a grip member connected with the pair of the attachment members and extended substantially in parallel with the upper surface.

Abstract: An apparatus and method to display an image are provided. The apparatus includes a reflective surface including an image disposed upon at least a portion of the reflective surface, an agitable and semi-transparent medium positioned over at least a portion of the reflective surface, a light source positioned to project light on the reflective surface through the medium, and a second surface positioned to capture light reflected from the reflective surface through the medium for displaying the image. The method of displaying the image includes disposing at least a portion of a reflective surface including an image beneath an agitable and semi-transparent medium, wherein the image is disposed upon at least a portion of the reflective surface, and providing light to the reflective surface such that a second surface captures light reflected from the reflective surface through the medium for displaying the image.

Abstract: A handwriting device includes a supporting device using two supporting arms. Each of the supporting arms is an elongated plate, includes a sliding end and an opposite pivoting end, and further includes an engaging surface. The sliding ends of the supporting arms are slidably engaged in two respective sliding channels defined in a supporting base. A cutout is defined in the engaging surface at the pivoting ends. A through hole is defined at each of the pivoting ends where the cutout is formed. The through holes of the supporting arms are aligned with each other. The supporting arms are rotatably connected with each other via a threaded bolt passing through the through holes of the supporting arms. As such, the height of a camera module supported by the supporting arms can be adjusted.

Abstract: An image processing apparatus includes a first image pick-up unit, a projecting unit that projects imaging light, an optical unit that transmits part of light entering from a first image pick-up direction and guides the part of the light to the first image pick-up unit while reflecting part of the imaging light projected from the projecting unit and outputting the reflected light in the first image pick-up direction, and reflects part of light entering from a second image pick-up direction and guides the part of the light to the first image pick-up unit while transmitting part of the imaging light projected from the projecting unit and outputting the part of the imaging light in the second image pick-up direction, and an attenuating unit that is movably placed between two positions.

Abstract: A light pattern generator that can be used to form a gobo for use in a projection optical system. A transparent plate is coated with a stack that is absorptive and reflective. The stack is formed to be ablatable in the form of a pattern. The stack can have multiple different layers with multiple different characteristics, all of which are ablated by the laser.

Abstract: A lid structure, apparatus and method for displaying graphical information uses beams of coherent light that are emitted in a scanning manner to project the beams of coherent light onto a display surface to form the graphical information on the display surface.

Abstract: An apparatus and method to display an image are provided. The apparatus includes a reflective surface including an image disposed upon at least a portion of the reflective surface, an agitable and semi-transparent medium positioned over at least a portion of the reflective surface, a light source positioned to project light on the reflective surface through the medium, and a second surface positioned to capture light reflected from the reflective surface through the medium for displaying the image. The method of displaying the image includes disposing at least a portion of a reflective surface including an image beneath an agitable and semi-transparent medium, wherein the image is disposed upon at least a portion of the reflective surface, and providing light to the reflective surface such that a second surface captures light reflected from the reflective surface through the medium for displaying the image.

Abstract: An image output device includes a housing which is opened at a predetermined portion of a side wall thereof, a Fresnel lens which is installed in the opened portion of the housing, a base which is installed inside the housing to allow an object to be placed thereon, illumination means for illuminating the base, and a convex lens which is located between the base and the Fresnel lens and is installed such that an image of the object placed on the base can be viewed at a position which projects out of the Fresnel lens. The base comprises a driving gear which is rotated by a motor, a driven gear which is rotated by rotation of the driving gear, and a rotation plate which is rotated by rotation of the driven gear.

Abstract: In general, in one aspect, the invention features a system that includes a catoptric projection objective having an optical axis and including a plurality of projection objective elements positioned between an object plane and an image plane, the object and image planes being orthogonal to the optical axis, the projection objective being configured so that during operation the projection objective directs radiation reflected at the object plane to the image plane to form an image at the image plane of an object positioned in a field at the object plane, the field having a first dimension of 8 mm or more and a second dimension of 8 mm or more, the first and second dimensions being along orthogonal directions.

Abstract: A circuit includes a converter for converting an a.c. voltage into a d.c. voltage. The converter has a diode half-bridge, a switch half-bridge, and two d.c. rails. Further, the converter has a second converter for converting the a.c. voltage into a second d.c. voltage.

Abstract: In a camera-assisted presentation system, a microcomputer activates a motion detecting module to detect a motion of an object, based on a variation in luminance of image data representing a material photographed by a photographing module. In the case of detection of a motion of the object, the microcomputer controls an output control module to prohibit transfer of the image data to an image output module. Image data photographed immediately before detection of the motion is kept in an output image storage sub-module of the image output module. This arrangement effectively prevents any action of setting the material from being undesirably displayed on an external display unit, thus ensuring smooth presentation with improved display of images during the actions of setting the material in the camera-assisted presentation system.

Abstract: An apparatus according to an embodiment of this invention is an apparatus which comprises a lens for reading the image and a plurality of light sources which are arranged into a circular shape that partially surrounds the lens.

Abstract: The present invention is embodied in a system and method for projecting a liquid crystal display (LCD) of a personal data assistant or mobile telephone. In general, the present invention enables users of PDAs and/or mobile telephones to enlarge the view of textual and graphical images. Namely, the present invention is embodied in a system and method that projects the LCD display screen of LCD displaying devices, such as PDAs and/or mobile telephones, onto a larger surface, for example, the back of car or airplane seat. This allows Internet information, including World Wide Web (WWW) pages or online demos with text and images to be enlarged. Also, enlargement of text and images by the projection arrangement of the present invention allows easier reading for people that have difficulty seeing small text/numerical characters and images.

Abstract: A projector of a reflection type has a transparent stage plate on which a transparent original sheet is set. A lamp illuminates the original sheet through the stage plate. A Fresnel mirror is laid on an upside of the original sheet, and reflects light from the original sheet in a convergent manner. The light from the Fresnel mirror is reflected away from the stage plate. The light is again reflected, and incident upon a projecting lens, which projects an image of the original sheet to a screen. A housing contains the Fresnel mirror in movable fashion. An inserting slot is formed in the housing, into which the original sheet is inserted during supply of the original sheet. Photo sensors operate to detect a front edge of the original sheet inserted through the inserting slot. It is also detected that the original sheet is set on the stage plate. An ejector switch is operated for ejection of the original sheet.

Abstract: A real image direct front projector includes a housing with a plane transparent object support for placing objects thereunder and for permitting light emitted from at least one light source to pass therethrough. A projection lens is mounted concentrically above the object support for producing an object image on an image wall outside of the projector. The projection lens is located above and vertically within the circumference of the object support. The object support has in at least a predetermined area thereof a plurality of microprisms on a side of the object support facing away from the object.

Abstract: An overhead projector that irradiates light onto an object or a sheet of paper, focuses the light reflected therefrom with a focusing lens, isolates ultraviolet or infrared rays having a specific wavelength among the focused light via a filter, forms an image by irradiating the isolated light onto an image former, and projects the image onto a projection screen by irradiating visible light onto the image former whereby the image is enlarged and projected via a projection lens to thereby obtain a more clear image.

Abstract: In order to provide a display apparatus which can express projected images of small characters, illustrations or the like in not only the daytime or an illuminated bright place, but also the nighttime in the case where brightness is deficient, besides which can be used in not only the outdoors, but also the inside of a dark room, the present display apparatus comprises a mirror Fresnel lens, an original picture for projection positioned over the surface of the mirror Fresnel lens, and a projection mechanism positioned on the surface side of the mirror Fresnel lens and at the same time, disposed so as to emit light on the surface of the mirror Fresnel lens, further the light emitted from the projection mechanism being reflected by the mirror Fresnel lens to project an image of the original picture for projection on a prescribed plane of projection.

Abstract: An apparatus and method for projecting optical images from opaque or transparent objects onto a remote viewing screen includes a plane mirror combination and a reflective projection means. The plane mirror combination comprises an image inverting plane mirror and an image reversing plane mirror. The image inverting plane mirror is positioned angularly over the illuminated object and converts the upright and nonreversed object image into an inverted and reversed image. Disposed close by the image inverting plane mirror is the reflective projection means which comprises a parabolic concave mirror the parabolic concave mirror captures the inverted and reversed image and projects it onto the image reversing plane mirror near by as an enlarged, upright and reversed image. In return, the image reversing plane mirror reflects the enlarged, upright and reversed image onto the remote viewing screen as an enlarged, upright and nonreversed real image.

Abstract: A color toner forming a developed image to be transferred to a transparent sheet by a known electrophotographic method, the refractive index of said color toner being smaller than that of said transparent sheet, but greater than that of the air.

Abstract: The invention concerns a transparency overhead projector having an illumination unit of which the height has been extremely reduced. The main component of the illumination unit is a specular surface comprising mutually parallel, mirrorized prismatic shoulders either on its top or on its lower side, which reflect the light from at least one lateral source toward the Fresnel lens, the platen and the projecting lens. The specular surface may be plane, however it may also be curved in circular, hyperbolic etc. manner in the longitudinal direction of the prismatic shoulders. This curvature may be constant or it may vary. Further, the specular surface also may be twisted, that is, it may also be curved in a direction orthogonal to the prismatic shoulders, and this curvature also may be constant or variable.

Abstract: The invention relates to a device for reproduction and tracing by forming an image of an original, at desired scale which is produced by at least one lens, on a screen on which a sheet of photosensitive materials, such as a picture film, or tracing paper is extended, comprising separate illumination systems for reproduction and tracing, wherein the illumination system for tracing is retracted in a retraced position located off the lighting space of the illumination system for reproduction, and turned over so as to eliminate spoilage of the quality of the reproduced picture by diminishing irregular reflection from the illumination system for tracing to the lens when a part of light from the illumination system for reproduction is emitted thereto during the reproduction operation.

Abstract: In an overhead projector comprising a writing plate, and under this arranged Fresnel lens, a light source and an objective carried by a carrying arm, the problem to be solved is to overcome the disadvantages of the state of the art and to provide a possibility for a lecturer to make information retrieved from an electronic information source, for example, a computer or an electronic game, accessible to a large viewer and listener circle. The invention solves this problem thereby, that between the Fresnel lens and the writing plate there are arranged a layer of liquid crystals which are aligned in an electric field and transparent electrodes on both sides thereof, whereby two of the plates or films traversed by the light beam have light polarizing properties.

Abstract: A projection arrangement for projecting three-dimensional images of objects into space. The object is illuminated by a source of light, and the light rays reflected from the object are directed so as to be incident on a mirror surface located behind a lens. The mirror surface receives an image from the lens and the combination forms an enlarged three-dimensional image projected into space. The lens can be in the form of a modified Fresnel lens of multiple focal lengths and having spherical zones in the form of strips. The Fresnel lens, which may be used in combination with other optical elements, provides a substantially large field of view suitable for viewing a three-dimensional image of the object by a mass audience. The image projection may be achieved without the use of a screen. The enlarged three-dimensional image appears floating in space visible to unaided eyes of an audience.

Abstract: An optical viewing device enabling visually handicapped persons to read ordinary textual material in full color, the device comprising a stage for holding the material and an X-Y positioner used to move the textual material on the stage; lights beneath the stage for illuminating the material; an objective to form a real image; a prism or mirrors for reflecting the imaging rays from the objective through 90 degrees and for reinverting the rays; two mirrors to reflect the rays to an approximately vertical, directional, controlled brightness rear projection screen, so that the imaging rays successively passing from the objective to the reflecting/reinverting prism or mirrors and the two mirrors form a real, erect enlarged image on the screen.

Abstract: A semiconductor device having a semiconductor body includes a field effect transistor and an active transistor region with two electrode zones, one of which surrounds the other, and an island zone which is situated therebetween. These zones enclose channel regions over which there are provided gate electrodes, the first one of which surrounds the second. The gate electrodes are connected to bond pads present outside the active transistor region. The first gate electrode is interrupted at the area of the connection from the second gate electrode to a bond pad, both its ends being connected to another bond pad. Even at very high frequencies, the transistor exhibits a high gain, a high transconductance and a low input attenuation.

Abstract: A replica of biological surface tissue with negative topography lying on a platform is illuminated by means of light from a light source disposed inside a base on which the platform is mounted. Illuminating light from the source is transmitted to a location above the platform from which it is directed onto the platform such that the illuminating light impinges upon the replica at an angle approximately between 20.degree. and 42.degree. to the surface of the replica. Preferably, the illuminating light is transmitted by a fiber optical bundle and/or mirrors with flat or varying focal lengths. The platform is rotatable and tiltable, and is adjusted for viewing of the replica with positive topography. The illuminated replica is magnified by a microscope and projected thereby onto a screen for observation.

Abstract: A housing which is adjustable for height and within which is placed an object to be projected onto a screen also contains a light source and a reflecting system, the light emitted by the source being reflected onto the object. The top face of the housing is pierced in order to permit the passage of the luminous flux through an optical system which is placed above the housing and cooperates with a camera for photographing the projected image of the object on the screen. Adjustable means are provided for optical coupling between the camera and the assembly consisting of optical system and housing.

Abstract: An optical display device for creating the illusion of an object floating in space comprises a lens means having the optical properties of a convex lens, a housing for supporting the lens and an object such that the light path from the object to the lens is greater than the focal length of the lens and means for illuminating the object.

Abstract: A visual presentation sheet is provided with a photographic image stratum and a liquid crystal stratum. Under certain energy conditions, the liquid crystal stratum scatters incident light so that the photographic image stratum is visible by direct observation. Under other energy conditions, the liquid crystal stratum is cleared to enable optical projection of the photographic image stratum.

Abstract: The design of a large copy projector is such that its projection path extends rearwardly and obliquely so that the projector and the viewing screen can be viewed side-by-side. This projector uses an opaque copy sheet characterized by an under specularly reflecting face that is accessible to the optical system from below but that can be marked from above by a chemical reactant ink from a user's pen or the like. Simultaneously, the upper face is unobstructedly available for direct observation and manual access and the lower face is unobstrusively available for imaging projection through a folded optical path below the copy sheet, which is established by a short throw, oblique incidence catadioptric optical system.

Abstract: The design of a large copy projector is such that its projection path extends rearwardly and obliquely so that the projector and the viewing screen can be viewed side-by-side. This projector uses an opaque copy sheet characterized by a lower specularly reflecting face that is accessible to the optical system from below but that can be marked from above by a chemical reactant ink from a user's pen or the like. Simultaneously, the upper face is unobstructedly available for direct observation and manual access, and the lower face is unobstrusively available for imaging projection through a folded optical path below the copy sheet and a wide angle projection lens positioned at the side of the copy sheet.