Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical focus adjustment means for projection television apparatus










Image Number 5 for United States Patent #4473840.

A projection television apparatus having three monochromatic cathode-ray tubes, a mirror block and a lens. The three cathode-ray tubes which display red, green and blue images, respectively are placed to form the letter "T" with their faceplates facing each other. The mirror block consists of two dichroic mirrors intersecting to form the letter "X". Red, green and blue images from the three cathode-ray tubes are combined into one color image by the mirror block, and the resulting color image is enlarged and projected on the screen by a single lens. It is possible for the mirror block to be moved linearly in one direction without rotation. The focus adjustment of the projected image on the screen may be carried out by moving both the mirror block and the lens without moving the cathode-ray tubes.








 
 
  Recently Added Patents
Packet communication system and packet communication method, and node and user device
Electrode binder composition, electrode slurry, electrode, and electrical storage device
Control unit of a ride level control system, and ride level control system
Managing job execution
Method and apparatus for allocating erasure coded data to disk storage
Methods of prognosing a rheumatoid arthritis remission phenotype
Compositions and methods of vascular injury repair
  Randomly Featured Patents
Stacking chair
1-Carbonamido imidazoles
Wavelength stability circuit
High-voltage dual-polarity I/O p-well pump ESD protection circuit
Catalyzed processes for the hydrotreatment of hydrocarbons
Integrated circuit package with integrated heat sink
Application of MICR media to xerographic images
Method for the formation of a planarizing coating film on substrate surface
Cock comprising indexable rotating key
Hand knitting apparatus and method