Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for controlling the temperature of low pressure metal or metal halide lamps










Image Number 2 for United States Patent #4101807.

A low pressure metal or metal halide vapor lamp for photocopying applications. The low pressure sodium vapor lamp is operated in a continuous mode and provides illumination of increased brightness and of a color (yellow) which is optimum for providing a copy which is an accurate representation of the original. An auxiliary heater is formed on the lamp to both decrease the warm-up time of the lamp and to control lamp temperature for optimum light output, an electrical control circuit being coupled to the heater to control the current therethrough.








 
 
  Recently Added Patents
Anti-fake battery pack and identification system thereof
Light barrier and method for detecting objects
Method and structure of forming backside through silicon via connections
Image processing apparatus capable of using replacement component, image forming apparatus capable of using replacement component, and method of administrating replacement component
Illumination apparatus for microlithography projection system including polarization-modulating optical element
Incentive based recommendation method for mobile station content
Charged particle source with integrated electrostatic energy filter
  Randomly Featured Patents
Image forming device
Snowmobile
High speed fabric folder
Stabilized expression vectors containing .lambda.P.sub.L promoter and the gene for the cI.sub.434 repressor, plasmids containing the vectors, hosts containing the plasmids and related methods
Wide-angle dewarping method and apparatus
Electroluminescent display apparatus
Tool
Drill-string shock absorbers
Crystalline 4-(3-chloro-2-fluoroanilino)-7 methoxy-6-{[1-(N-methylcarbamoylmethyl)piperidin-4-yl]oxy} quinazoline difumarate Form A
Data processing system and method thereof