LED Lens

摘要

A lens for distribution of light from a light emitter having an emitter axis. The lens includes an outer surface and a total internal reflection (TIR) surface positioned outwardly of and around the emitter such that light received by the TIR surface is totally internally reflected toward the outer surface. The TIR surface has at least one recessed region extending away from the light emitter, thereby to increase amount of TIR and facilitate lateral diffusion of highest-intensity light in the middle of the light distribution. The lens may further include a base surface adjacent the emitter and an inner surface defining an inner cavity about the emitter axis. In such embodiments, the TIR is positioned and configured for total internal reflection of light received from the inner surface.

主权项

1. A lens for distribution of light from a light emitter having an emitter axis, comprising:
a base surface adjacent the emitter and forming an opening about the emitter; an inner surface defining an inner cavity about the emitter axis; and a total internal reflection (TIR) surface outwardly of and around the inner surface and positioned and configured for total internal reflection of light received from the inner surface, the TIR surface comprising at least one recessed region extending away from the light emitter, thereby to increase the TIR and facilitate lateral diffusion of highest-intensity light in the middle of the light distribution.