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
Optical packet signal transmission device and WDM optical communication network
Attribute category enhanced search
Deflection device for a scanner with Lissajous scanning
Method or system for investing and/or trading
Pattern transfer apparatus and method for fabricating semiconductor device
Charge domain filter and method thereof
Key management policies for cryptographic keys
  Randomly Featured Patents
Metal door frame assembly
Rail wheel servicing management
Reduced connection for 22 character gas panel
1,3-Benzodioxol derivatives
Code division multiple access (CDMA) inbound messaging system utilizing interference cancellation to recover inbound messages
Radiometric temperature measurement system
Method for supporting optical international language modules flashed into ROM
Semiconductor device and method for manufacturing the same
Anthrapyridone compounds, water-based ink composition, and articles colored therewith