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
Under bump passive components in wafer level packaging
Flash memory apparatus and method for generating read voltage thereof
Method of and apparatus for laser drilling holes with improved taper
Process for preparing MDA via the stage of the aminal
Semiconductor integrated circuit
Mirac proteins
Three-dimensional holographic display using active shutter
  Randomly Featured Patents
Soil pollution monitoring system and apparatus
Ceiling lamp
Powder transport, fusing and imaging apparatus
Computer front bezel
Sheet having elastic property and slip property, and solvent dispensing container using the sheet
Diaminorhodamine derivatives
Catalytic reactor with swirl
Index processing
Transport apparatus for transporting part-carrying members to various work stations and for reading data encoded on said part-carrying member
Automobile mock fishing pole antenna