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Class 348/749 - Liquid


Subclass of Class 348 - Television
Definition: Subject matter wherein the projector is cooled down by a
No. of patents: 40
Last issue date: 05/13/2008


NumberTitleIssue Date
7370976Projection type image display device
The device has flexure correcting means for operating to rotate a first eccentric cam provided at a central part of a first side of a reflecting mirror, thereby moving up and down the central part of the first side to correct the flexure of the reflecting mirror, to...
05/13/2008
7175345Dental x-ray apparatus
A dental x-ray apparatus (10) includes a tube head (11) formed from a cast zinc material. Structural components of tube head (11) include such component (20) formed from a plastic material impregnated with a high molecular weight substanc...
02/13/2007
7075707Substrate design for optimized performance of up-conversion phosphors utilizing proper thermal management
Methods and compositions for using an up-conversion phosphor as an emitting material in a reflective displays and Polymer compositions for display mediums, and blue green red (BRG) display mediums. Roles of the pumping duration and character on the temperature and t...
07/11/2006
6972808CRT assembly of projection television
A cathode-ray tube (CRT) assembly of a projection television includes a CRT for creating an image, a lens for magnifying the image created in the CRT and projecting the image onto a screen, and a coupler disposed between the CRT and the lens. A cooling liquid recept...
12/06/2005
6945694Dental X-ray apparatus
A dental x-ray apparatus (10) includes a tube head (11) formed from a cast zinc material. Structural components of tube head (11) include such component (20) formed from a plastic material impregnated with a high molecular weight substanc...
09/20/2005
6943756Device for enhancing contrast in liquid crystal display projection system
A device for enhancing contrast for a liquid crystal display (LCD) projection system is provided. The contrast enhancing device includes an image driver supplying an image signal, a LCD panel for converting the input image signal into an optical image signal, and a ...
09/13/2005
6922295Lens assembly with integrated focus mount and CRT coupler
A lens assembly adapted to be connected to a CRT and affixed to mounting structure in a projection television cabinet. The lens assembly includes a tubular lens mount having a longitudinal axis and at least a first optical lens element mounted along the longitudinal...
07/26/2005
6871962Projection coupler with dual channel sealing mechanism
A one piece, double gland, quad lobe design gasket system for use in a projection system that redundantly seals in the liquid present in a coupler supporting a projection lens in alignment with a projection optical signal generation device (e.g., a Cathode Ray Tube)...
03/29/2005
6825888Closure member for optical unit spacer bracket
A projection television set having a screen and three projection units each capable of projecting a monochromatic image onto the screen. The projection units each having a cathode ray tube (CRT) optically coupled to a projection lens, which includes both a C-lens an...
11/30/2004
6542308Projection display apparatus and projection lens device for use therein
A projection display apparatus having a light source for generating a white light, a liquid crystal panel for modulating an incident light from the light source, a polarizing plate which is located at a light exiting side of the liquid crystal panel for p...
04/01/2003
6525784Projection television receiver
Leak of refrigerant leak is prevented. Further, invasion of impurities into refrigerant liquid is prevented, and a stable projection image is obtained. The assembling steps are curtailed, and the projection television receiver is manufactured by a smaller...
02/25/2003
6506317Cooling medium for optical equipment and cooling device using the same
A cooling medium and a cooling device for optical equipment using the same, which cooling medium has a refractive index in a specific range, hardly causes the problem to dissolve or swell plastic lens and other component parts, and is flame retardant. The...
01/14/2003
6456341CRT assembly of projection TV system
A CRT assembly of a projection TV system includes a CRT for forming an image, a projection lens for magnifying and projecting the image formed by the CRT, a coupler installed between the CRT and the projection lens, a coolant receiving portion formed at t...
09/24/2002
6384874Display apparatus
The present invention provides a display apparatus for discharging and removing needless cooling liquid consistently when the display apparatus for cooling a cathode ray tube with cooling liquid is fabricated and relates to a display apparatus for cooling...
05/07/2002
6369864Optical unit spacer-bracket for projection television sets
A projection television set having a screen and three projection units each capable of projecting a monochromatic image onto the screen. The projection units each having a cathode ray tube (CRT) optically coupled to a projection lens, which includes both ...
04/09/2002
6299313Projection display apparatus and projection lens device for use therein
A projection display apparatus including an optical modulator for modulating an incident light from a light source, and a projection lens device for projecting the light modulated by the optical modulator. The optical modulator includes a liquid crystal p...
10/09/2001
6188165Coolant buffering apparatus for CRT assembly
A coolant buffering apparatus of a CRT that buffers expansions and contractions of a coolant held in a coupler installed between the CRT and a projection lens unit. The apparatus has a cylinder connected to the coupler so that coolant in the coupler can f...
02/13/2001
6115082Coupler systems for projection televisions
A coupler system (13) for mounting a projection lens (15) to a cathode ray tube (16) in a projection television (10) is provided. The system includes a first member (20) composed of a heat and chemical resistant plastic and a second member (22) composed o...
09/05/2000
6093998Liquid-cooling type cathode-ray tube with light shielding member
There can be avoided a contrast degradation caused by stray light generated from a liquid-cooling type cathode-ray tube apparatus incorporated in a projection type television apparatus. Stray light (7) emitted from a flange (peripheral edge) (11a) of a le...
07/25/2000
5801792High resolution, high intensity video projection cathode ray tube provided with a cooled reflective phosphor screen support
A single gun projection cathode ray tube (CRT) which permits the generation of high brightness image output. The crux of the invention is the provision, in the CRT, of an optically reflecting high thermal conductivity metal plate-like member positioned in...
09/01/1998
5784129Electro-optical apparatus utilizing electro-optical modulating devices to provide a synthesized color image
An electro-optical device includes a light amplifying portion comprising a first substrate having a transparent conductive film, a photoconductor whose electric resistance is lowered in accordance with light irradiation and a dielectric thin film, a secon...
07/21/1998
5767924Display unit which is immersed in a coolant
A display unit includes an optical modulation element for subjecting an incident light beam to optical modulation, and a coolant disposed in contact with an output side of the optical modulation element, wherein a focal distance of an output light beam of...
06/16/1998
5682077Display device and cathode ray tube
A display device comprising a cathode ray tube is provided with a holder which comprises a faceplate and which is arranged in front of the display window. The space between the faceplate and the display window is filled with a liquid or a gel. An improved...
10/28/1997
5585867Projection tube and its application in a video projection system
A projection tube featuring good accuracy in controlling a slant angle between a cathode ray tube and a projection lens, an excellent focusing performance, and further low production cost, and also a video projection systems which utilizes the foregoing p...
12/17/1996
5528318Single panel color projection video display having improved scanning
A color projection video system utilizing only a single light valve. A white light source is separated into red, green and blue bands. Scanning optics in the form of three prisms coaxially mounted for rotation cause the RGB bands to be sequentially scanne...
06/18/1996
5300942High efficiency light valve projection system with decreased perception of spaces between pixels and/or hines
A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead sp...
04/05/1994
5159230Projection cathode ray tube with fluid heat exchanger
A target assembly for a projection cathode ray tube is provided wherein the target member is cooled by convective fluid heat transfer occurring within and around a partially hollow support shaft screw. The target member is a solid block of relatively high...
10/27/1992
4982289Liquid cooled cathode ray tube apparatus for video projection system
In a video projector for projecting video images on phosphor screens of cathode ray tubes to a screen, a refrigerant mixture of ethylene glycol, diethylene glycol and glycerine is filled in watertight spaces enclosed by the cathode ray tubes, radiators an...
01/01/1991
4904054Projection apparatus for projection television receiver
A coupler contains cooling liquid between the front face of a projection tube and a lens that forms the screen of a projection television receiver. The coupler has a multiplicity of large and small fins extending into the cooling liquid and parallel to th...
02/27/1990
4824224Lens system for a cathode ray tube projection system
An improved lens system for a projection television is described. The lens system is designed to be used with a cathode ray tube having a face glass with an aspheric surface having phosphor elements mounted thereto. The aspheric surface of the face glass ...
04/25/1989
4777532Projection apparatus for a projection television receiver
A projection apparatus for a projection television receiver comprises a projection tube for receiving video signals and projecting images therefrom; a lens aligned for focusing images from the tube; a frame for supporting the tube in alignment with the le...
10/11/1988
4717853Projection tube whose coolant contains an ethylene oligomer
Disclosed is a projection tube containing a coolant comprising a liquid mixture of ethylene glycol and water filled in the space between a phosphor screen panel and a transparent face panel which is set up at a certain distance in front thereof, wherein t...
01/05/1988
4672458Projection television systems having lens tilt compensation member
A projection television system includes a planar projection screen, a CRT for producing a phosphor image, and a lens assembly for focusing the phosphor image onto the projection screen. The lens assembly is arranged such that its optical axis is skewed wi...
06/09/1987
4651217Video projector
A video projector has a structure wherein a projection lens is disposed to be fixed at a predetermined distance with respect to a front surface of a faceplate of a projection cathode-ray tube through a medium. The medium has substantially the same refract...
03/17/1987
4645966Display tube with fluid cooled window
A display window (11) of a display tube is manufactured from a plate (21) having grooves (22), which plate is fused to a plate (20), so that ducts (25) are present in the display window (11). The phosphor screen (14) is provided on the inside of plate (20...
02/24/1987
4646143Video projector type television receiver
The present invention relates to a video projector type television receiver in which a prism plate is disposed in front of a color cathode ray tube, a projection lens is located in front of the prism plate and transparent liquid is injected into the space...
02/24/1987
4612582Liquid cooled cathode ray tube assembly for video image projection systems
A video image projection system uses an improved cathode ray tube assembly incorporating a projection cathode ray tube within a housing with a light transmissive heat transfer fluid contained within the housing and surrounding the exterior surface of a po...
09/16/1986
4511927Liquid coupling system for video projectors
A liquid coupling system for a video projector having a liquid in intimate contact with a CRT screen and the first lens element of the lens arrangement. The liquid is optically transparent and performs the additional function of absorbing heat and x-rays ...
04/16/1985
4405949Liquid cooling in projection cathode ray tubes
Cooling means are disclosed for cooling the face panel of a projection cathode ray tube. The cooling means comprises a housing having a rearwardly extending flange with a forwardly tapering section configured to nest with the forwardly tapering section of...
09/20/1983
4151554Liquid coupled color-television image projector
A color television image projector in which three television projection cathode ray tubes, one for each television primary color, are arranged in a T-shaped array with the face plates of the cathode ray tubes placed in a chamber, and crossed dichroic mirr...
04/24/1979
 
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