High-efficiency head-up display lighting system using three-primary-color light source

Abstract

The invention relates to the technical field of display illumination, and particularly discloses a high-efficiency head-up display lighting system using a three-primary-color light source. The high-efficiency head-up display lighting system includes at least one three-primary-color light source group, a group of micro-lens arrays, and a color filter. The light source group emits light beams ahead;a collimating lens is arranged in front of the three monochromatic light sources, so that the light rays can be emitted out in parallel forwardly; the group of micro-lens arrays are made of a light-transmitting material to form a block-shaped structure body, and lens array surfaces which are opposite to each other in position are arranged on the light incident surface and the light emitting surface which are parallel to each other; and the color filter is arranged on the light emitting side of the micro-lens array, and the three kinds of color light beams respectively penetrate through the color points on the color filter and are not obviously absorbed, so that the penetration rate is improved and the color saturation degree is improved. According to the invention, the three colored lights respectively penetrate through the color points of the color filter and are not obviously absorbed, so that the penetration rate is greatly improved, and the color saturation degree of the display is better; the color triangle is large, the diffusion sheet is not needed, the brightness of the illumination system is improved, and the waste of the light source is reduced.

Description

technical field [0001] The invention relates to the technical field of display lighting, and specifically discloses a high-efficiency head-up display lighting system using three primary color light sources. Background technique [0002] A head up display (Head Up Display, hereinafter referred to as HUD) is composed of a box of a virtual image projection system and a light combiner (Combiner). In the early days, it was applied to fighter jets. Pilots can watch the scene ahead through the optical synthesizer, and at the same time, the device projects a virtual image to obtain information without looking down at the instrument panel. Due to the continuous advancement of technology, the more advanced automobile industry has gradually adopted the HUD system. In the HUD system, how to reduce the waste of light sources, provide sufficient brightness, reduce power consumption, and reduce heat dissipation requirements are critical to the HUD system. Reliability is particularly impor...

AI Technical Summary

Problems solved by technology

[0006] In the traditional technology, the light-emitting source 60 is covered with a light-emitting diode 602 of a white light source to cover a focusing cup 601. When the light is reflected forward, the energy is lost, and after the light is lost through the diffuser 62, although The lighting light becomes uniform and soft; however, the angle of the light will also be diffused, making it difficult to concentrate on a specific angle (the field of view of the HUD) and within the visible range of the HUD (Eye-box), which poses a problem for the use of the HUD. waste of light

Moreover, the white light source of the traditional lighting system is absorbed by the color filter in the rear LCD, which further weakens the intensity of the light source, and the light is easy to diffuse and difficult to concentrate. This is the main shortcoming of the traditional technology, so HUD needs a better lighting system. Improve the quality of HUD and make it more competitive

Images