Patent ID: 11971151

Abstract:
A signal lighting device or lighting device, for a motor vehicle headlight, including light sources for emitting light rays and a light guiding body (LGB) with two light-emitting surfaces (LESs). The LGB includes a beam splitting device with a total internal reflection surface (TIRS), which totally reflects part of the incident light rays and deflects them from the light guide main propagation direction to one of the LESs. The TIRS has individual optical structures (OS), which allow incident light rays to pass through to the other LES. Each OS is designed as a recess in the TIRS, the recess, starting from an opening in the LGB, being delimited by lateral surfaces extending into the LGB. One lateral surface (the base surface) is oriented such that light rays pass through it toward the first LES. Each opening occupies an area on the TIRS, which has an opening surface area AB,i, the TIRS has a total surface area Ages, wherein Ages is the sum of all opening surface areas, and the first LES has a first surface area A1 and the second LES has a second surface area A2, and wherein ΣiAB,i/(Ages−ΣiAB,i)=A1/A2.