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
Method of analyzing cell structures and their components
Method, apparatus and article for detection of transponder tagged objects, for example during surgery
Semiconductor process
Systems and methods for printing images outside a normal color gamut in image forming devices
Touch screen panel
Snap-engagement structure
Portable stand
  Randomly Featured Patents
Laser beam path alignment apparatus for laser processing machines
Battery operated screwdriver
Crushable traffic marker
Zipperless wetsuit
Nodal point connection
Systems for generating and analyzing stimulus-response output signal matrices
Amplifier circuit
Method of improving power conversion efficiencies in dye-sensitized solar cells by facile surface treatment
Portable accessory container
Method of separating and purifying two active forms of urokinase using affinity chromatography