Accession Number : ADD015840

Title :   Fiber-Optic Viewgraph Projector.

Descriptive Note : Patent application, filed 7 Oct 91, patented 4 May 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Prysner, William J

Report Date : 04 May 1993

Pagination or Media Count : 4

Abstract : A viewgraph projector having a light above the transparency receiver and projecting downward through the transparency is provided. The projected image is received below the transparency by a condenser lens and further transmitted by a flexible fiber-optic cable. A projecting lens is provided at the output end of the fiber-optic cable for projecting the images to a screen. Structurally associated with the projecting lens is a device or means which enables removably affix the projecting lens relative to a suitable support in a conference room environment, which device may for example constitute a clip, hooking means, clamp, or weights. This enables a subset of the aforesaid elements comprising the light source, transparency receiver, and condenser lens to be located independently of the projecting lens, as for example, to locations where they do not obstruct the audience's field of view or where backscattered illumination from the light source does not annoy the audience. A three-sided wall extends downward from the level of the light to the transparency receiver reducing external illumination and providing intrinsic convective cooling of the light

Descriptors :   *FIBER OPTICS, *OPTICS, *TRANSPARENCIES, CABLES, CLAMPS, COOLING, ENVIRONMENTS, EXTERNAL, FIBERS, ILLUMINATION, IMAGES, LIGHT, LIGHT SOURCES, OUTPUT, RECEIVERS, WALLS, WEIGHT, PATENTS

Subject Categories : Photography
      Optics
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE