Patent ID: 7268340

Claim:
A wide angle sensor system comprising: a) an opto-transmitter for transmitting a beam of light; b) an opto-receiver having an aperture angle of at least 80° and which is disposed at an observation angle of at most 1° with respect to said opto-transmitter, said opto-receiver for receiving a reflection of said beam of light sent by said opto-transmitter; and c) a reflector for reflecting said beam of light sent by said opto-transmitter, said reflector with a multiplicity of cube corners, each cube corner comprising: a first cube corner part surface; a second cube corner part surface; and a third cube corner part surface wherein said first cube corner part surface, said second cube corner part surface, and said third cube corner part surface join to form each cube corner, wherein at least 50% of the multiplicity of cube corners have at least one corner part surface that is not square-shaped and has a larger surface area than the remaining cube corner part surfaces; and wherein a cube corner axis of each of the multiplicity of cube corners deviates by up to 15° from an axis normal to a reflector surface in a direction toward said at least one of said cube corner part surfaces having said larger surface area, so that said opto-receiver receives across a substantially 80° angle, a reflected beam having a reflective value greater than 3000 mcd/lx.