Illumination system

Details Illumination system Illumination system

2011-08-09

2011-08-09

Shafer, Ricky D (Department: 2872)

Optical: systems and elements

Prism

C359S837000, C362S259000, C362S277000, C362S335000, C362S339000

Reexamination Certificate

active

07995298

ABSTRACT:
An illumination system including at least one coherent light source, a light uniforming element, and a prism is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming element is disposed on a transmission path of the coherent beam. The prism is disposed on the transmission path of the coherent beam and between the coherent light source and the light uniforming element. The prism has a light incident end and a light exit end. The light incident end has at least one incident polygonal pyramid portion protruding away from the light exit end. The prism is capable of rotating about an axis, and the axis extends from the light incident end to the light exit end. The illumination system effectively reduces the degree of the speckle phenomenon.

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