Patent ID: 9581472
Date: 2017-02-28
CPC Classifications: B60K,G01D,G02B

Claim:
1. A strip lighting device for receiving visible light from a source of illumination for illuminating the device comprising: a main body having opposite front and rear sides extending along the length of the main body, the front side, in use, being disposed towards a viewer of the device, and the rear side including a light scattering layer for scattering light from said source of illumination towards the viewer when the main body is illuminated; the main body having a front cladding portion and a rear cladding portion, the front and rear cladding portions each extending along the length of the main body and being made of a first light transmissive material for conveying said light, and the front cladding portion being relatively forwards of the rear cladding portion relative to said viewer and being arranged to receive light from said source of illumination; and a discontinuous layer extending along the length of the main body and comprising a plurality of discrete regions of a second light transmissive material having a lower refractive index than the first light transmissive material, each of the discrete regions being sandwiched between and in contact with the front and rear cladding portions at, respectively, a front interface and a rear interface, and the discrete regions having gaps between them such the first light transmissive material extends through the gaps to connect the front and rear cladding portions, wherein the front interface of each of the discrete regions is smooth to facilitate total internal reflection as light is conveyed along the length of the front cladding portion and said gaps allow some of said conveyed light to impinge on the light scattering layer whereby the light scattering layer scatters said light through the rear cladding portion and the front cladding portion towards the viewer of the device.