Lens unit and projection screen made of the same

Details Lens unit and projection screen made of the same Lens unit and projection screen made of the same

2009-09-15

2011-11-01

LaBalle, Clayton E (Department: 2862)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S455000, C359S449000, C359S443000, C359S627000

Reexamination Certificate

active

08049961

ABSTRACT:
A lens unit and a projection screen made of the same are disclosed. The lens unit includes a micro lens having a light incident surface and a light emergent surface opposing to the light incident surface; a light absorbing layer formed on the light emergent surface of the micro lens and having a cavity formed therein; a scattering layer formed in the cavity of the light absorbing layer and including a transparent resin blended with scattering particles; and a reflective layer formed on the light absorbing layer and the scattering layer. The projection screen includes a plurality of the lens units, thereby achieving high contrast and high energy utilization efficiency of incident light with a large viewing angle.

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