Resources Contact Us Home
Fluorescent lamp with second phosphor layer

Image Number 2 for United States Patent #4070598.

A fluorescent lamp having a phosphor layer for converting radiation at a first non-visible wavelength to radiation in the visible spectrum, includes a second phosphor layer for converting other non-visible radiation, having a deleterious effect (depreciation) on the first phosphor layer, to wavelengths in the region containing the first wavelength for subsequent conversion to visible light, thus increasing the brightness of the fluorescent lamp simultaneous with minimization of early depreciation of lamp brightness.

  Recently Added Patents
High-frequency power amplifier
Digital-to-analog converter and performing method thereof
Systems and methods for identifying malicious domains using internet-wide DNS lookup patterns
Methods, systems, and computer-readable media for providing an event alert
Enterprise seamless mobility
Die seal ring
Organic light-emitting display with black matrix
  Randomly Featured Patents
Oil passage structure in an engine
High voltage electrical transmission line and conduit therefor and method of making same
Angle grinder
Dynamic optical font availability system
File system support assembly
Method for determining a velocity of an object in a printing system
System and method for controlling a steering position of rear vehicle wheels
System and method for network optimization
Method for minimizing time to establish initial synchronization between a mobile station and a base station in a mobile communication system
Pressure latched poppet cartridge valve