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4540914 |
Absorbing graded nitride film for high contrast display devices
A faceplate of a cathode ray tube is shown wherein a cathodoluminescent phosphor material 1 is deposited on glass faceplate 2. A metal nitride metal absorbing inhomogeneous film 3, where the metal...
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4539687 |
Semiconductor laser CRT
Room temperature laser action is achieved in a cathode ray tube (CRT) in which the target includes a plurality of semiconductor layers: a thin, wide bandgap buffer layer; a thicker, narrow bandgap...
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4507585 |
Beam-indexing color picture tube arrangement
A frontal light extraction type beam-indexing color picture tube arrangement comprises a phosphor screen which is formed on the inner surface of the tube panel and includes an array of color...
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4485328 |
Monochromatic picture tube
A monochromatic picture tube whose faceplate has a transmittance of 17 to 23% is provided. In order to obtain the same transmittance as described above, black di-iron trioxide is coated on phosphor...
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4425528 |
Color picture tubes and method of manufacturing the same
Red and blue light emitting members constituting a three color fluorescent screen of a color picture tube comprise a combination of a red phosphor, a blue phosphor and a filter substance of a color...
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4409515 |
Projection television tube and process for forming same
A projection television tube includes a spherically curved electronic beam target surface spaced away from the neck of the tube, a larger reflective surface spherically curved concentrically with...
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4393329 |
Article of manufacture for projection television system
An article of manufacture is disclosed for use in a projection television system. A cathode ray picture tube has a face panel with a rearwardly extending skirt and a window for receiving a...
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4393322 |
Image intensifier faceplate
A glass faceplate having a central area of required useful diameter surrounded by a narrow ring of opaque glass and an outer glass mounting flange. Light entering the flange or ring is prevented...
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4392077 |
Deeply filtered television image display
A low-cost, deeply filtered television imge display is depicted. A viewing screen includes a patterned layer of phosphor particles disposed contiguous to the inner surface of the display. The layer...
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4365183 |
Projection televison tube and process for forming same
An envelope for a projection television tube includes a spherically curved electronic beam target surface spaced away from the neck of the tube, a larger reflective surface spherically curved...
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4310783 |
Cathode ray tube face plate construction for suppressing the halo having a low reflection and method
A cathode ray tube face plate construction for suppressing the halo on the face plate of the cathode ray tube having a face plate formed of glass with an index of refraction in the vicinity of 1.52...
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4310784 |
Cathode ray tube face plate construction for suppressing the halo and method
Cathode ray tube face plate construction for suppressing the halo on the cathode ray tube having a face plate formed of glass with an index of refraction in the vicinity of 1.52 and with outside...
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4307320 |
Pigment coated phosphor and high contrast color television cathode ray tube using same
Pigment coated phosphors comprising a europium activated yttrium oxysulfide phosphor having a europium activator value within a range of 0.04 gram atom to 0.066 gram atom per 1 mol of yttrium...
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4232247 |
Projection tube with X-ray shielding means on target
A projection tube projects in front a visible light image produced by irradiating a target having a fluorescent screen formed on one surface thereof with an electron beam emitted from an electron...
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4217520 |
Image display faceplate having a chromatic matrix
This disclosure depicts an image display having a viewing faceplate for exhibiting an informational color image. The faceplate has deposited on an inner surface thereof a light-absorbing matrix...
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RE30015 |
Image display employing filter coated phosphor particles
An image display comprising a viewing screen including a layer of phosphor particles emissive of light of a particular visual color and color filter particles transmissive of light of that color ...
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4135113 |
Line-type picture tube with light-absorbing particles mixed with blue phosphor
A color picture tube in which at least one of phosphor layers emitting green, blue and red lights which are deposited on the inner surface of a glass panel contains a black light-absorbing material.
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4135112 |
Color cathode ray tube screen structure providing improved contrast
A color cathode ray tube screen structure, having means for enhancing the absorption of ambient light and providing improvement in the contrast of the image display, is comprised of three...
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4132919 |
Absorbing inhomogeneous film for high contrast display devices
This invention relates to light absorbing inhomogeneous films and their use in luminescent display devices such as cathode ray tubes and electroluminescent panels to achieve high contrast ratio and...
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4082978 |
Color television, having superimposed colors
In color television, where the picture appears in groups of two or more colors side by side on a screen, an individual concave mirror is provided for each such group, which combines the side by...
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4049451 |
Method for forming a color television picture tube screen
A substantially continuous line screen structure pattern is formed in a color television picture tube having an interrupted-aperture shadow mask by applying a photosensitive material to a screen...
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4034398 |
Optical and mechanical improvements for television projection system
Interrelated optical, mechanical and electronic improvements are incorporated in a television projection system comprising a plurality of color separation assemblages, each including cathode ray...
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3946267 |
Plural filter system cooperating with cathode ray display with lanthanum host phosphor emissive in two colors
An optical filter system is provided for use with a penetration phosphor cathode ray tube of the special kind in which La 2 O 2 S particles are employed as the carrier hosts in the...
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3936302 |
Method for manufacturing fluorescent screens for use in colour picture tubes
A fluorescent screen including a plurality of parallel stripes of three colour phosphors is prepared by projecting light from a linear light source positioned in parallel with the stripes on...
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3891440 |
Process for fabricating a color cathode ray tube screen structure incorporating optical filter means therein
A color cathode ray tube screen structure, having means for enhancing the absorption of ambient light and providing improvement in the contrast of the image display, is comprised of a basic...
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3886394 |
Image display employing filter coated phosphor particles
An image display comprising a viewing screen including a layer of phosphor particles emissive of light of a particular visual color and color filter particles transmissive of light of that color...
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3884694 |
Process for forming a color cathode ray tube screen structure having optical filter elements therein
A process is provided for fabricating a multi-windowed screen structure for a color cathode ray tube effecting enhanced absorption of ambient light and providing contrast improvement of the image...
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3879632 |
HIGH-BRIGHTNESS, HIGH-CONTRAST CATHODE-RAY TUBE FACEPLATE PANEL
A glass faceplate panel for use in manufacturing an image screen structure for a monochrome or a color cathode-ray tube, in which the phosphor screen is interposed between a composite mesh and the...
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3825787 |
IMAGE INTENSIFIER WITH IMPROVED INPUT SCREEN
An image intensifier tube having a novel input screen structure comprising a photocathode used in conjunction with a novel radiation-sensitive structure for increasing efficiency in the conversion...
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3812394 |
IMAGE SCREEN WITH SINGLE, OPTICALLY CONTINUOUS FILTER
The screen of a shadow-mask tri-color picture tube has a series of optically continuous red filters not only covering screen areas assigned to red but also extending into abutting relation with...
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3761756 |
FLUORESCENT SCREENS FOR USE IN CATHODE RAY TUBES
In a fluorescent screen for use in a cathode ray tube used for image formation of the class including a phosphor film coated on the surface of a face plate, there are provided a plurality of hills...
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3760215 |
LOW-REFLECTION FILTER FOR CATHODE RAY TUBE FACE PLATE
The invention consists of a filter for the display screen of a cathode-ray ube (CRT). The filter permits a high contrast ratio to be obtained for operation of a CRT in intense ambient light and...
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3748515 |
COLOR TELEVISION PICTURE TUBE WITH SUBTRACTIVE COLOR FILTERS
The screen of a three gun shadow mask type of color picture tube is formed of three filters each predominantly transmissive of magenta, yellow and cyan which are the respective complements of the...
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3654505 |
BLACK ENAMEL GLASS FOR CATHODE-RAY TUBE
A faceplate of a color cathode ray tube has a black enamel glass with holes interspaced therethrough. Color phosphor areas are positioned within the holes in the black enamel glass.
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3600625 |
PROJECTION PICTURE TUBE WITH ROTATING FLUORESCENT SCREEN
A projection picture tube comprising an evacuated envelope, an electron gun assembly disposed therein, a metal target member with a fluorescent film thereon which is to be scanned by electron beams...
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3573529 |
FACEPLATE OF THIN-WINDOW RECORDING TUBE HAVING INTERMEDIATE SHEET OF SMALLER REFRACTIVE INDEX THAN THE FACE PLATE
An improved faceplate of a thin-window recording tube having an additional glass sheet interposed between the outermost glass sheet and fluorescent layer. The faceplate offers increased resolution...
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3560784 |
DARK FIELD, HIGH CONTRAST LIGHT EMITTING DISPLAY
A light-emitting phosphor display device having a high contrast ratio is provided having a light-absorbing dielectric layer on the side of the phosphor layer opposite the viewing side to absorb the...
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3558956 |
CATHODE-RAY TUBE
A cathode-ray tube whose screen is essentially a semiconductor quantum generator formed by an optical resonator and an active medium placed therein. The active medium is a film of semiconductor...
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3543073 |
VACUUM TUBES OF TELEVISION TYPE FOR X-RAY PROTECTION
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3532919 |
CATHODE RAY TUBE VIEW SCREEN STRUCTURE
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3524197 |
HIGH INTENSITY PROJECTION CATHODE RAY TUBE
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3519742 |
PHOTOCHROMIC DISPLAY USING CATHODE RAY TUBE
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3518373 |
DISPLAY CONTRAST ENHANCEMENT APPARATUS FOR USE WITH A CATHODE RAY TUBE
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3507551 |
PHOTOCHROMIC DISPLAY SYSTEM
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3504212 |
HIGH CONTRAST DISPLAY DEVICE INCORPORATING A LIGHT ABSORPTION AND SCATTERING LAYER
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3502928 |
IMAGE CONVERTER TUBE WITH A TARGET SCREEN ASSEMBLY CARRYING CATHODE-FORMING EVAPORATORS AND A FLUORESCENT TARGET SCREEN SPRING-BIASED AGAINST TUBE WINDOW
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3454716 |
LUMINESCENT IMAGE DEVICE AND COMBINATIONS THEREOF WITH OPTICAL FILTERS
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3384712 |
Display device and method of manufacturing same
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3330981 |
Phosphor coated articles
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3308326 |
Color image reproducer having red phosphor combined with red-pass filter element
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