Spread illuminating apparatus with lenticular elements

Details Spread illuminating apparatus with lenticular elements Spread illuminating apparatus with lenticular elements

2005-04-12

2005-04-12

Ward, John Anthony (Department: 2875)

Illumination

Revolving

C362S026000, C362S339000

Reexamination Certificate

active

06877872

ABSTRACT:
A plurality of minute lenticular elements made of a light-transmissible material and each having a substantially plano-convex cross section are formed on a major surface of a light conductive plate opposite to another major surface provided with a light reflection pattern, and are arranged radially with respect to a spot-like light source with their respective longitudinal directions oriented perpendicular to grooves of the light reflection pattern. Light rays guided in the lenticular element from its bottom surfaces are spread in a circumferential direction of its outer curved surfaces. A view field angle can be increased by the lenticular element in a direction tangential to the grooves improving view field angle distribution.

REFERENCES:
patent: 20020163790 (2002-11-01), Yamashita et al.

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