Head-up displayer

Abstract

The invention discloses a head-up displayer, which comprises a backlight system, a plurality of folding mirrors, and a half-reflecting mirror, wherein the backlight system is used for forming and emitting a full-color laser image, the backlight system comprises a backlight source for emitting RGB threecolor laser beams; the folding mirrors reflect the full-color laser image formed in the backlightsystem; the half-reflecting mirror reflects the full-color laser image reflected by the folding mirror to human eyesand forms a virtual image; the half-reflecting mirror comprises a mirror body and athree-point reflection film arranged on the mirror body in a plating mode, and the transmittance of the full-color laser image at the mirror body is 93% to 99%; the mirror body is provided with a light incident surface close to the folding mirrors and a light exiting surface away from the folding mirrors, the three-point reflection film is arranged on the light incident surface in a plating mode,the three-point reflection film is obtained by stacking a plurality of TiO2 plating layers, a plurality of MgO plating layers and a plurality of SiO2 plating layers, and the three-point reflection film can reflect at least 90% of RGB threecolor laser light. The head-up displayeris high energy utilization rate, good in definition, and low in cost.

Description

technical field [0001] The invention relates to the technical field of vehicle displays, in particular to a head-up display. Background technique [0002] The head-up display in the prior art uses white light as the backlight source, and the LCD screen as the image source. The light emitted by the backlight source is irradiated to the LCD screen and forms an image after passing through the optical device. Reflected to the human eye to form a virtual image. [0003] In order to eliminate ghosting, the reflective film of wavelength 400nm to 680nm with a reflection rate of 30% is plated on the light incident surface of the prior art half mirror, and the anti-reflection film with a wavelength of 400nm to 680nm with a transmittance of more than 97% is plated on the light exit surface. In this method, the contrast ratio of the light-incident surface and the light-exit surface image is: 20.4:1, while the contrast resolution of the human eye is 100:1, and the energy utilization rat...

AI Technical Summary

Problems solved by technology

[0003] In order to eliminate ghosting, the reflective film of wavelength 400nm to 680nm with a reflection rate of 30% is plated on the light incident surface of the prior art half mirror, and the anti-reflection film with a wavelength of 400nm to 680nm with a transmittance of more than 97% is plated on the light exit surface. The contrast ratio of the light-incident surface and the light-exit surface image of this method is: 20.4:1, while the contrast resolution of the human eye is 100:1, and the energy utilization rate is only 30%, which will cause the problem of reduced image resolution and poor clarity.

At the same time, the method of coating the light-incident surface and the light-emitting surface separately, the process is difficult and the cost is too high

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