Abstract: An enclosure includes an optical structure which divides the enclosure into a front section and a back section which includes a background setting. The enclosure includes a preprogrammed code located along an exterior wall. A smart phone can be used to sense the code and project an image onto the optical structure, which image is reflected enabling a viewer to see the reflected image superimposed on the background setting.

Abstract: A light source (110) is fixed at a position and emits light in a direction away from an optical axis (A) of an objective lens. An outer reflecting mirror (an optical member) (130) and an inner reflecting mirror (an optical member) (140) are provided as a unit so that relative positions thereof are fixed. A reflecting mirror unit (120) can be moved in directions along the optical axis (A), i.e. up and down relative to the light source (110). A free-form curved surface portion (131) of the outer reflecting mirror (130) and a reflecting surface of the inner reflecting mirror (140) reflect light in different directions depending on a position of the light incident thereon.

Abstract: A projection optical system including a projection lens, a first mirror that reflects a light from the projection lens, and a second mirror that widens an angle of a light from the first mirror by reflecting the light projects a light modulated according to an image signal from an optical engine unit. A third mirror reflects a light from the projection optical system. A screen transmits a light from the third mirror. An optical axis of the projection lens substantially matches an optical axis of the second mirror, and the light from the optical engine unit is shifted to a specific side from the optical axis of the projection lens.

Abstract: A projection unit 17 effectively corrects out of focus due to a temperature rise. A mirror holding mechanism of a concave mirror 25 has a mirror holder 41 and a mirror holder base 42. The concave mirror 25 is slidably housed in the mirror holder 41. A focus correction member 57, which expands by heat, is disposed between a back face of the concave mirror 25 and reference plane S formed in the mirror holder. The concave mirror 25 and the focus correction element 57 are urged to the reference plane S by a mirror retainer spring 59.

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: A liquid crystal projector comprises first, second and third liquid crystal panels having corresponding light sources, namely a red light source, a green light source, and a blue light source, wherein the red light source. The light sources are preferably Semi-conductor generated light arrays. The projector further includes a dichroic prism for superimposing the red, green and blue image displays, and a projection lens for projecting a full-color image beam formed by the dichroic prism. In order to control the intensity of the light sources, a pulse modulating means is coupled to each of the Semi-conductor generated light arrays, the pulse modulating means being operable to independently switch each of the light sources between an on state and an off state at a selectable repetition rate.

Abstract: A projector capable of throwing image on a screen from objects, the project comprising a base including a plurality of mirrors, a rear slanted plate hinged to the base, a lens in the front board, an object receiving drawer, and a cover; an angle adjustment means on the outside of the rear slanted plate; a light source; a housing shaped; and a cooling means. Image of object is reflected on mirror and lens. A clear image is obtained by turning the focusing knob. Further bias the rear slanted plate for adjusting the angle of thereof so as to obtain a better angle of the lens for enhancing focus.

Abstract: An overhead projector mounting system is provided that is configured to support a projector in a ceiling of a room. The system includes a housing having an opening through which an image generated by the projector is transmitted. Preferably, the system includes a mirror to reflect the image generated by the projector toward a viewing surface in the room.

Abstract: An overhead projector provides an unobstructed view of projected images by minimizing the vertical dimension of the projector and provides sufficient brightness of projected images by minimizing the loss of light. The light emitted from a light source housed in the body of the projector is reflected by a first reflection mirror and directed, through a transparent stage on which a transparent original is placed, to a second reflection mirror. Meanwhile, on the transparent stage, the principal ray axis of the light beam forms an angle .theta. with respect to the center axis of the surface of the transparent original. After reaching the second reflection mirror and being reflected thereby, the light is condensed into a projection lens unit, and is projected therefrom onto a screen to form thereon an image of the transparent original.

Abstract: A reflecting illumination projecting device includes a light source which emits illuminating light and a mirror which reflects the illuminating light emitted from the light source. A transmission type image forming portion is provided between the light source and the mirror to form a pattern to be projected, and a projecting lens is provided between the light source and the image forming portion. An optical path separating element is disposed in the vicinity of an exit pupil of the projecting lens. The optical path separating element includes a first portion for introducing substantially all of the illuminating light to the projecting lens and a second portion for introducing light reflected by the mirror onto the image projection plane.

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: An illumination system for use in an overhead projector which includes a tungsten filament light source, a back concave reflector, and a plano-convex glass condenser. The position of the light source relative to the concave reflector is controlled to give a specific longitudinal separation of the light source filament and its magnified image which results in a radiation parallax which produces improved efficiency, illumination and light uniformity at the projected image of the overhead projector.

Abstract: A projector comprises a substantially horizontal table, a substantially centrally above the table arranged projection optics (2), a light source (3) which is located above the table and arranged to illuminate the table, a deflexion mirror (4) for substantially horizontal deflexion of a light radiating vertically upwardly from the table, and a light shaft (5) which at least partially screens off the area between the optics (2) and the table (1) from the surroundings and is characterized in that a covering (6a) is arranged to be laid out over the table surface in that the upwardly facing surface of the laid out covering is light-reflecting, while the table surface is light-absorbing preferably black and mat, alternatively that the upwardly facing surface of the laid out covering is light-absorbing while the table surface is arranged to emit light vertically upwardly.

Abstract: A projection microscope is provided in which light from a light source in the base of the microscope may be directed either up through a specimen mounted on a stage to provide transmitted lighting or obliquely downwardly onto the specimen to provide surface lighting. An objective lens above the illuminated area enlarges the image and focuses it on a projection lens mounted within a fully enclosed housing. Light from the projection lens is reflected by an adjustable mirror either onto the back of a ground glass viewing screen along a first optical axis, or onto a photographic film in a film holder positioned at the top of the housing.

Abstract: A compact light condensing illumination system for the concentration of light at an area provides a light source capable of having a relatively shallow reflector with a relatively small aperture directing collimated light toward a planar reflector of rectangular configuration having a mirrored surface configured with relatively short grooves extending at an angle to the direction of the collimated light to uniformly reflect the light toward a planar grooved mirror disposed substantially at a right angle to the first mirrored surface and of relatively large surface to reflect the light in substantially parallel rays to a Fresnel lens of relatively low power for condensing of the light rays to concentrate the light at a preselected distance from the Fresnel lens.

Abstract: A visual transparency projector has a short throw, oblique incidence catadioptric optical system, capable of enabling (1) a viewing screen and (2) the projector with its operator to be seen by an audience in side-by-side relation.