Patent ID: 8348467

Claim:
An LED replacement lamp for replacing a tubular or linear fluorescent light comprising: (a) a base board; (b) a plurality of LEDs mounted on the base board; (c) a plurality of optical waveguides, having an incident surface and an exit surface; wherein each of the LEDs has a corresponding waveguide and all the light emitted from each of the LEDs immediately enters the corresponding waveguide's incident surface, after which it is guided through the waveguide core and then exits at the exit surface; (d) a cover which accepts the light exiting the exit surfaces of the plurality of waveguides wherein the waveguides have an adiabatic or slowly varying increase in their core or light-guiding region's cross-sectional area as the distance from the LED increases which allows diffusion or broadening of light from each LED source at the cover's surface.