Matches 151 - 174 out of 174 < 1 2 3 4


Match Document Document Title
4682853 Transmission projection screen and method of manufacturing same  
The invention relates to a transmission projection screen having a high light output and a suitable contrast, for example, for use in a projection-television system, and a method of manufacturing...
4679900 Bulk diffuser for a projection television screen  
A bulk diffuser for rear projection television screens which exhibits a Gaussian intensity profile. By appropriately selecting the indices of refraction of the substrate and the spheres therein...
4605283 Blackened optical transmission system  
A blackened optical system includes a transparent substrate having a front side provided with at least a pair of elongate ribs forming therebetween an elongate groove. An amount of optically black...
4566756 Projection screen  
A projection screen comprises a single plate of a transparent material. The diffusion in the horizontal direction is provided by filamentary particles which are oriented substantially in one...
4431720 Imaging screen and coating therefor for rear-projection television  
An improved rear-projection viewing screen is disclosed which is characterized by having on the viewed front surface of a lenticulated transparent substrate, a single layer having...
4379617 Rear projection screen for a color television projector  
In a rear projection screen for a color television projector, having a plurality of lenticular lenses on one surface thereof, the contour of the cross-section of each lenticular lens is simply...
4375909 Rear projection screen and method for the production thereof  
The invention relates to rear projection screens comprising a light-scattering layer of a mixture of 95-5% by weight of a wax-like substance having a low light-scattering power, such as paraffin,...
4361382 Translucent projection screen for rear-type image projection system and process for fabricating the same  
A translucent projection screen for a rear-type image projection system comprising a flat plate or sheet of transparent resin into which are uniformly dispersed or distributed spherical glass...
4174883 Rear projection screen  
A rear projection screen comprises a light scattering member composed of a melted mixture containing at least two high polymers having different refractive indexes.
4066332 Rear projection screens  
A rear projection screen having means for controlling light direction comprising a light diffusion plate composed of wax, a crystalline polymer or a mixture thereof, and light shielding layers...
RE28634 Rear projection screen  
A transmission type screen embodies a glass or plastic support having a color quality and ambient light control layer applied to the viewing side of the support. The layer comprises a dispersion...
3902787 Rear projection viewing screen  
Rear projection viewing screen formed of a member of a transparent material and having first and second generally parallel surfaces. A light diffusing pigmentation in granular form is dispersed in...
3751135 REAR PROJECTION SCREEN  
A screen for rear projection the image forming element which consists of a sheet having a thickness of 0.2 - 1.5 mm and consisting of opaline polymethyl methacrylate containing dispersed calcium...
3712707 COMPOSITE BACK PROJECTION SCREEN AND METHOD OF FORMING  
A composite back projection screen exhibiting a highly uniform intensity distribution and reduced scintillation is formed by embossing a Fresnel lens along either the front or back face of a...
3682530 POLYMERIC REAR PROJECTION SCREENS  
A rear projection screen comprising a sheet of polymeric material consisting essentially of polypropylene. The sheet comprises two surface layers and a core layer containing crystalline...
3679451 NONGLARE COATING FOR SURFACES OF TV TUBES AND THE LIKE AND SUCH COATED SURFACES  
3609000 TRANSMISSION-TYPE PROJECTION SCREEN  
A transmission-type projection screen comprising a support having thereon a layer of a binder having microcapsules dispersed therein, said microcapsules containing particles of a material having a...
3598640 REAR PROJECTION SCREEN,SCREEN COATING AND METHOD  
3573141 POLYMERIC REAR PROJECTION SCREENS  
3552822 REAR PROJECTION SCREEN  
3346674 Method for fabricating backlit projection screens  
3279314 High contrast projection screens  
3183775 Backlit projection screen  
3173332 Backlit projection screen  

Matches 151 - 174 out of 174 < 1 2 3 4