CPC G02B 5/0221 (2013.01) [G02B 5/0231 (2013.01); G02B 5/0242 (2013.01); G02B 5/0263 (2013.01); G02B 5/0278 (2013.01); G02B 5/0284 (2013.01); G02B 6/0051 (2013.01); G02B 27/0012 (2013.01)] | 33 Claims |
1. An apparatus for producing a predefined light distribution in space, comprising:
a light source operable to output light; and
a diffuser with a substrate having a back surface receiving the light output from the light source and a front surface, opposite the back surface, redirecting and transmitting the light received on the back surface to output diffuse light with the predefined light distribution from the diffuser,
wherein the substrate is formed of a light-transmissive material,
wherein the back surface comprises a plurality of lenses focusing the light received on the back surface onto the front surface,
wherein the front surface comprises a plurality of facets providing the diffusing of the light, and
wherein each of the plurality of facets is randomly assigned to one of a plurality of sets; and
wherein each of the plurality of sets is associated with a region of the predefined light distribution.
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