Matches 51 - 100 out of 111 < 1 2 3 >
Match Document Document Title
5513892 Sun glare shield  
An extendable automobile sun glare shield may be constructed with a body of opaque material with a shield of polaraized material having a film of black glass covering the upper section of the...
5202744 Electro-optical measuring instruments  
The present invention relates to an optical routing module (2) suitable for use in a light microscope (1) for sample inspection simultaneously with a primary light source (10) and a secondary light...
H001154 Covert lighting adapter  
A Blue-Green spectral Filter and two polaroid filters are assembled within rotating barrel assembly to both limit light source emissions to a selected light spectrum and control light intensity in...
5096520 Method for producing high efficiency polarizing filters  
The manufacturing cost of color liquid crystal displays depends on improving the yield of making color filter arrays and the polarization efficiency of polarizers to increase the brightnesse, and...
5076669 Method and apparatus for selectively blocking light beams of different wavelengths with single color-sensitive filter  
A method and apparatus for selectively blocking light beams of different wavelengths with the use of a single color-sensitive filter by passing the beams through a multiple layer system consisting...
5040880 Quartz optical filter  
By forming corner parts of transparent quartz plates and the glass plate in rounded arc shape, in a mirror-surface finishing to accurate plane, polishing powder grain can flow out smoothly and...
4856879 Aiming device  
An aiming device (diopter) has an easily removable eyepiece with adjustable diaphragm mounted on one end of a housing portion which housing portion has a cavity eccentrically formed therein. A...
4747673 High power optical attenuator  
An attenuator for high power laser beams, the attenuator has an annular b dump through which the beam passes diametrically and in which the beam passes successively through a pair of pivoting...
4703229 Optical display from XeF excimer fluorescence  
An excimer optical display includes a plasma panel device having therein a mixture of gas comprising xenon and molecular fluorine and a selected amount of other gases forming XeF excimer molecules...
4697890 Light emitting device  
A device, such as a flashlight, spotlight, or reading light, for emitting an incident beam of light wherein the intensity and color of an incident beam of light emitted from the device can be...
4650286 Liquid crystal light value color projector  
A compact, full color, light projection system using a liquid crystal light valve (LCLV) and a unique combination of optical devices. The LCLV operates to modulate a light beam which has been...
4626897 Optical filter for color imaging device  
A spatial frequency filter apparatus for suppressing spurious signals of the type generated in a color television camera incorporating a mosaic color encoding filter for multiplexing color signals...
4544237 High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization  
The invention provides a two-channel liquid crystal light valve image projection system with prepolarization using an oil coupled optical arrangement. A prepolarizing beam splitter is mounted the...
4500172 Two color liquid crystal light valve image projection system with single prepolarizer  
An optical arrangement is disclosed which provides color selective prepolarization of the light incident upon two or more light valves. This is accomplished by the use of a prepolarizing prism...
4464018 Liquid crystal light valve image projection system with color selective prepolarization and blue mirror  
An optical system is disclosed which incorporates a color selective prepolarizer to improve contrast and reduce stress induced birefringence while allowing a blue mirror to be used to enhance the...
4461542 High efficiency optical tank for three color liquid crystal light valve image projection with color selective prepolarization  
A first color selective beam splitter is provided for splitting light from a source into first and second beams, the first beam being blue and the second beam having red and green color components....
4392723 Aiming device  
An aiming device has arranged in a tubular housing an adjustable iris diaphragm, a polarizing filter and a number of color filters. The color filters are mounted on a filter disc which is rotatably...
4346962 Light analyzing lenticular screen for viewing stereo images  
A screen construction enables three dimensional perception of projected stereo images without necessarily requiring that the viewer wear analyzing eyeglasses. Three dimensional shadow image data is...
4286843 Polariscope and filter therefor  
The filter comprises a multiplicity of light polarizing elements which polarize light in a plurality of planes, and a multiplicity of filtering means associated with the light polarizing elements....
4278736 Contrast enhancement filter and method  
Contrast enhancement filter having first and second transparent glass substrates with first and second surfaces with the first surface of each facing the medium in which the filter is disposed. A...
4256368 Color contrast sensitivity measuring device  
An apparatus for generating patterned images which are variable in color contrast and spatial frequency while retaining a substantially constant, uniform level of photometric luminance. Two broad...
4063266 Adjustable polarized filters for cameras  
Filter case rotatably carries two filter retainers each with a linearly polarized filter, each at the same angular position. A perforated belt engages around the sprocket teeth on the filter...
3936147 Variable characteristic light filter  
A variable color light filter system comprises a variable light filter including a pair of superimposed different color chromatic polarizing components with axes at a right angle to each other and...
3840695 LIQUID CRYSTAL IMAGE DISPLAY PANEL WITH INTEGRATED ADDRESSING CIRCUITRY  
A flat, non-vacuum display panel using a lightmodulating layer of a voltage-dependent, optically active material of twisted nematic liquid crystals, X-Y matrix addressed by an array of coextensive,...
3731080 HEADLAMP POLARIZING ATTACHMENT  
This concept is directed to a headlamp polarizing attachment using a linear polarizer having a spherical shape with asymmetric receptacles formed in it. The attachment fits on a standard automobile...
3602573 COLOR ANALYSIS OPTICAL SURVEILLANCE SYSTEM  
An optical system for improving target visibility comprising a prism which eparates light reflected from the scene into its various color wavelengths and a set of cross polarized color polarized...
3502888 OPTICAL RETROREFLECTIVE LABEL READING SYSTEMS EMPLOYING POLARIZED ELECTROMAGNETIC RADIATION  
3470310 COLOR IMAGE DISPLAY SYSTEM UTILIZING A LIGHT VALVE  
3457414 POLARIZED COLOR OPTICAL COMMUNICATION SYSTEM  
3352965 Method and means for enhancing camouflaged target detection utilizing light polarization techniques  
3202041 Optical device for orienting monocrystals along the axis of the crystal  
3044348 Haidinger's brush attachment for synoptophore apparatus  
2997390 Novel color processes and products  
2990449 Color television on projection screen  
2986969 Stereoscopic simulation device  
2928310 Device for determining color  
2927500 Viewing device for selecting color filters used in photography  
2907917 Color television tube with polarizing filter  
2837087 Apparatus for use in treating visual defects  
2773422 Polarizing universal sun glasses  
2720553 Polarized color television  
2707749 System of light beam communication  
2705318 Indicating means for warning lights  
2689879 Color television  
2687670 Optical device with a variable and colored phase contrast  
2594758 Dark field color filter with polarizing means for microscopes  
2572656 Blind flying device  
2520445 Model railroad signal  
2519428 Color control system for image projectors  
2514043 Color television  
Matches 51 - 100 out of 111 < 1 2 3 >