Patent ID: 9458981
Filing Date: 2016-10-04
CPC Classification: A63F,F21V,G07F

Claim Text:
1. A translucent diffuser for an electronic gaming machine for diffusing light from a spot light source, the translucent diffuser comprising: an inner portion located to intercept light emitted along an emission axis by the spot light source, wherein the inner portion has a first translucency such that a predetermined fraction of the light emitted by the spot light source within a radius of the inner portion is transmitted through the inner portion; and an outer portion spaced from the emission axis by the radius of the inner portion, wherein the outer portion has a radius defined according to a distance from the emission axis at which a brightness of light emitted by the spot light source is twice a minimum brightness emitted by the spot light source, wherein the radius of the inner portion is half the radius of the outer portion, and wherein the outer portion has a second translucency that is gradated from the first translucency to full transparency as distance from the emission axis increases, the inner and outer portions configured such that, in use, the translucent diffuser prevents transmission of more light through the inner portion than through the outer portion, such that the light output from the electronic gaming machine by the translucent diffuser is substantially uniform as the distance from the emission axis increases.