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
Area efficient through-hole connections
Integrated emergency medical database system
Method for the hydrolysis of substituted formylamines into substituted amines
Adhesive structure of optical device, adhesion method, and optical pickup device
Dynamic reconstruction of a calibration state of an absorption spectrometer
Parallel power inverter motor drive system
Method for fabrication of a semiconductor device and structure
  Randomly Featured Patents
Yield and speed enhancement of semiconductor integrated circuits using post fabrication transistor mismatch compensation circuitry
Furniture support system
Analog to digital converter with integral linearity error compensation and method of operation
Humidity detecting device and image forming apparatus including the same
Apparatus and method for measuring current
Method of detecting nonuniformity of sensitivity of radiation detector
Combined radio and cassette tape recorder
Process for the manufacture of 5-dichloroacetyl-3,3,6-trimethyl-9-oxo-1,5-diazabicyclo[4.3.0] nonane
On demand prop rod for utility vehicle cargo box
Fracture holding