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
Rechargeable battery including a channel member
Electrode tab for secondary battery and secondary battery using the same
Method and apparatus for soft information transfer between constituent processor circuits in a soft-value processing apparatus
Debugging using code analysis
Load control device
Halogen-free flame retardants for epoxy resin systems
Prioritizing application data for transmission in a wireless user device
  Randomly Featured Patents
Composition for use as self-locking agent and self-locking member using the same
Preparation of caffeine
Game with individual two part boards
Parallel-ruling straightedge
Hybrid technology for lean NOx trap and particulate filter regeneration control
Hinge with offset guide walls
Method and device for recording sub-titles
Starting device for a single-phase motor
Type checking in java computing environments
Fiber reinforced composite having an aluminum phosphate bonded matrix