Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Light mask










Image Number 5 for United States Patent #5499304.

Apparatus for producing a light mask for balancing light across a display area of a vehicle instrument cluster comprises a camera, a digitiser and a computer. An image of the display area is obtained and digitized to produce data relating to the illumination levels of the image at a plurality of pixels. The illumination levels are used to calculate an appropriate light mask for the display area on the basis of the transmissive density of the masking ink used and of a reference illumination value relating to the least lit part of the display area which it is desired to illuminate. The light mask comprises an array of dots having a diameter related to the amount of attenuation required in the area in which the dot is located. Up to three masking layers may be provided if a single layer is insufficient to produce the required attenuation with the chosen masking ink. Balanced coverlays can readily be produced, and the number of masking layers required can also be reduced.








 
 
  Recently Added Patents
Color image display device, color filter substrate, color pixel array substrate, and electronic device
Apparatus and method of managing radio bearer in wireless communication system
Hepodxilin analog enantiomers
Method and apparatus for a battery docking connector having reserve power for hot battery swap
Integrated circuit packaging system with an integral-interposer-structure and method of manufacture thereof
Imaging apparatus, control method thereof, and program
Control service for relational data management
  Randomly Featured Patents
Direct reduction process in a rotary hearth furnace
Cylinder pressure measurement system and method
Dot printer head with alternate magnetic flux paths
Method of manufacturing a semiconductor device
Apparatus for manufacturing plastic bottles from molded hollow preforms
Method of selective epitaxial growth for semiconductor devices
Method and device for the classification and redirection of data packets in a heterogeneous network
Method for steel surface hardening treatment and an apparatus therefor
Electrical line
Process for manufacture of alkaline earth acetates