Light guide member for vehicle lamp, vehicle lamp for motor vehicle, and motor vehicle

Abstract

The invention provides a light guide member for a vehicle lamp, the vehicle lamp, and a motor vehicle. The light guide member comprises a light incidence part which is located at a first end part of the light guide member and is arranged to receive an incident light beam; a light emergent surface located at a second end part of the light guide member opposite to the first end part; and a first side surface and a second side surface opposite to each other, wherein the first side surface and the second side surface extend between the first end part and the second end part, and are arranged to guide the light entering from the light incident part toward the light emergent surface by means of reflection, wherein and at least one of the first side surface and the second side surface is providedwith a light decoupling region, and the light decoupling region is arranged such that a part of the light beam is emitted from a space facing the second end part of the light guide member from the corresponding side surface.

Description

technical field [0001] The invention relates to a light guide for a vehicle lamp, a vehicle lamp for a motor vehicle and a motor vehicle. Background technique [0002] Lighting is an important component of motor vehicles. Car lights can provide lighting functions for motor vehicles, such as low beams, high beams, fog lights, etc., and can also provide signal indication functions for motor vehicles, such as position lights, brake lights, etc. Traffic rules and industry norms have clear requirements for the light intensity distribution of the light beams emitted by various vehicle lights. Therefore, the outgoing light beam of the car light needs to be adjusted by the optical system before leaving the car light. [0003] In the current car lights, it is often difficult to meet the requirements of the visible range and light intensity distribution of the outgoing beam of the car lights only through the flat light guide, and it is necessary to additionally set a prism outside t...

AI Technical Summary

Problems solved by technology

[0003] In the current car lights, it is often difficult to meet the requirements of the visible range and light intensity distribution of the outgoing beam of the car lights only through the flat light guide, and it is necessary to additionally set a prism outside the light guide to rearrange the light emitted from the light guide. Modulation can form the outgoing beam of the car lamp that meets the requirements

On the one hand, this leads to a complex structure, on the other hand, the additional prism may also cause adverse effects on the lighting effect of the car lights

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