Light-guiding optical system

A light-guiding optical system comprising at least one light guide made from an optically transparent material with collimating element and a light unit to emit light rays into the collimating element,

• wherein the light guide comprises a front side, a bottom side, a top side, and external lateral surfaces,
• wherein the front side comprises an output surface for the output of the light rays conducted by the light guide out of the light guide,
• wherein the top side or bottom side comprise a binding surface to bind the light rays collimated by the collimating element into the light guide,
• wherein the light guide comprises reflective means to produce light patterns on the output surface that comprises two lateral reflective surfaces and a central surface,
• wherein the two lateral reflective surfaces and the central surface are configured for total reflection of a part of the light rays bound by the binding surface,
• wherein a portion of the light rays are reflected by the two lateral reflective surfaces onto the external lateral surfaces and another portion of the light rays are reflected by the central surface straight to the output surface of the light guide,
• wherein the two lateral reflective surfaces open from a common contact edge, along which the two lateral reflective surfaces are joined,
• wherein the central surface either:
• (i) does not touch any of the two lateral reflective surfaces, or
• (ii) touches one of the two lateral reflective surfaces at a first contact point that lies on a marginal edge of the one of the two lateral reflective surfaces, and the other of the two lateral reflective surfaces at a second contact point that lies on a marginal edge of the other of the two lateral reflective surfaces, the first and second contact points being either (a) different, or (b) identical and lying at the end of the common contact edge;
• wherein the two lateral reflective surfaces and the central reflective surfaces are planar and make an angle of 45° with the bottom or top side of the light guide and the light rays exiting from the collimating element also fall onto the two lateral reflective surfaces and the central reflective surfaces at the angle of 45°.

A light-guiding optical system comprising at least one light guide made from an optically transparent material with collimating element and a light unit to emit light rays into the collimating element,

• wherein the light guide comprises a front side, a bottom side, a top side, and external lateral surfaces,
• wherein the front side comprises an output surface for the output of the light rays conducted by the light guide Out of the light guide,
• wherein the top side or bottom side comprise a binding surface to bind the light rays collimated by the collimating element into the light guide,
• wherein the light guide comprises reflective means to produce light patterns on the output surface that comprises two lateral reflective surfaces and a central surface,
• wherein the two lateral reflective surfaces and the central surface are configured for total reflection of a part of the light rays bound by the binding surface,
• wherein a portion of the light rays are reflected by the two lateral reflective surfaces onto the external lateral surfaces and another portion of the light rays are reflected by the central surface straight to the output surface of the light guide,
• wherein the two lateral reflective surfaces open from a common contact edge, along which the two lateral reflective surfaces are joined,
• wherein the central surface either:
• (i) does not touch any of the two lateral reflective surfaces, or
• (ii) touches one of the two lateral reflective surfaces at a first contact point that lies on a marginal edge of the one of the two lateral reflective surfaces, and the other of the two lateral reflective surfaces at a second contact point that lies on a marginal edge of the other of the two lateral reflective surfaces, the first and second contact points being either (a) different, or (b) identical and lying at the end of the common contact edge;
• wherein the central surface comprises central reflective surfaces and at least one inactive surface being situated between the central reflective surfaces of the central surface.