Matches 1 - 36 out of 36
Match Document Document Title
7441905 Optical scanner  
An optical scanner suitable for scanning a vertical object. The optical scanner has a scanning body, a focusing device and a scanning module. The scanning body has a transparent window, the...
6913359 Projection method with real object projector  
A projection method using a real object projector is disclosed. The real object projector comprises a base, a control circuit installed in the base, and an image receiving apparatus installed on...
6893132 Camera-assisted presentation system  
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...
6834968 Teleprompter with directional screen  
A teleprompter configured to project an image to a viewer at a viewer location comprises a single-beam teleprompter projector, configured to project an image to a focal plane, and a directional...
6814447 Real object projector  
A real object projector having a base, a control circuit installed in the base, and an image receiving apparatus installed on the base. The base is combined with a light source module, and between...
6623127 System and method for enlarging a liquid crystal display screen of a personal data assistant  
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...
6595646 Low profile overhead projector having a foldable post  
The present invention provides overhead having (a) a main body having a stage area, (b) a head assembly, and (c) a post suspending the inverted head assembly over the stage area. The post is...
6582084 Projector having an inverted head optical arrangement  
An overhead projector including a Fresnel lens, a single element meniscus projection lens having a concave side and a convex side, and a folding mirror placed in an optical path between the Fresnel...
6075872 Process for illuminating artwork  
A process for illuminating an object with a first spectrally distinct area. In the first step of the process, the spectral reflectivity of a first spectrally distinct area is determined, and that...
5947577 Image pick-up device  
In an image pick-up device, a document, picture, OHP (Over Head Projector) film or similar subject is laid on a stage. While the subject is illuminated by a light source unit, the resulting...
5940049 Remote interactive projector with image enhancement  
The projector of the present invention provides a means for interactively displaying and annotating a document image at two separate locations. The projector consists of an image plate having an...
5530496 Overhead projector  
An overhead projector for projecting an image of a sheet material placed on a flat stage onto a remote screen standing almost vertically has a projection optical system with its optical axis...
5504544 Projector with multiple lamp light source  
A projection system is described which efficiently combines the output from multiple lamps, images of which are focused to a common point. The projected screen brightness is multiplied over that of...
5452032 Overhead projector  
An overhead projector a base table, which has a stage on which an original is placed. A projecting head includes projecting mirror and lens, and forms an image of the original. A stand has bottom...
5345282 Foldable optical apparatus  
An optical apparatus, e.g. a foldable overhead projector of the reflection type, includes a base table, whereon original material is placed on a Fresnel mirror. A projector head forms an image of...
5325137 Overhead projector with a spatial light modulator  
An overhead projector for irradiating a spatial light modulator with reading light to read out a subject image written in the spatial light modulator with writing light and projecting the subject...
5317350 Overhead projector  
An overhead projector has a stage on which original material is placed. The stage has a Fresnel mirror. An electrostatic attracting structure is integral with the Fresnel mirror. The attracting...
5307098 Projection inspecting machine  
A projection inspector which projects the image of an object being measured onto a screen for a visual inspection. It may be used with a microscope for observation in detail. Unlike the...
5281986 Latching mechanism for overhead projector post  
An automatic latching mechanism for the post of an overhead projector includes a spring-biased collar slidably disposed on the post and a cam which lifts the collar as the post is raised and...
5214458 Display apparatus  
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...
5085505 Overhead projector  
An overhead projector comprises two light sources, a first reflection mirror that reflects a light from an illuminating light source of said light sources toward a reflection type light collection...
5033842 Episcopic projector  
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...
4988599 Electrophotographic color toner having selected index of refraction range  
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...
4912752 Optical projector for transparencies and opaques  
An optical projector having opaque and transparency operating modes employs a pair of illumination paths, conventional overhead-projection optics, common focus elements, and a large-aperture stage....
4690527 Device for reproduction and tracing  
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...
4443076 Projecting apparatus  
A projecting apparatus wherein a work on a mount is illuminated by an illuminating device and an image of the shape of the work obtained through a light transmitted therethrough or reflected...
4343538 Projector  
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...
3979160 Compact overhead projector  
A compact portable overhead projector providing improved uniformity and efficiency of illumination employs an off-focus light source within a truncated light-diffusing ellipsoidal reflector in...
3922079 Optical multiple projector  
There is provided an optical multiple projector comprising a projection system of overhead type, the table of which is transparent, and a TV-set, the picture screen of which is arranged under the...
3900253 Optical projecting apparatus  
There is provided an optical projecting apparatus comprising a combined overhead-episcopic projector, a diascopic projector and/or a film projector, wherein one light source is arranged to be...
3804528 PRINT PROJECTOR FOR FITTING CONTACT LENSES  
Apparatus for use in the fitting of contact lenses. A positive print of a photograph of the eye of a patient is obtained having superimposed thereon a plurality of concentric circles with diameters...
3744892 OPTICAL PROJECTION DEVICE  
An optical projector which combines the dual functions of episcope and overhead projector is described. The projector comprises a single casing housing a pivotally mounted mirrored member movable...
3697175 CAMERA ATTACHMENT FOR COPYING PHOTOGRAPHIC TRANSPARENCIES  
A print-copying attachment or accessory device primarily for a so-called "close-up" camera incorporating an electronic flash component with variable intensity control means. Light rays from the...
3385162 High efficiency mirror projection system  
2826958 Adapter for projector  
0991390 Title is not available  
Matches 1 - 36 out of 36