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Mixed illumination system of head-up display

A head-up display and hybrid lighting technology, applied in the field of lighting systems, can solve problems such as low ambient light collection efficiency, complex collection optical fibers, and lack of uniform light source display

Active Publication Date: 2010-11-03
HONG KONG APPLIED SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although both use ambient light and another light source, the former has low ambient light collection efficiency, while the latter involves complex collection fibers
Furthermore, both patents aggregate the two light sources, but neither provides a uniform light source for display

Method used

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  • Mixed illumination system of head-up display
  • Mixed illumination system of head-up display
  • Mixed illumination system of head-up display

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Embodiment Construction

[0016] In the drawings, the same numbers in each schematic diagram indicate the same or similar features. figure 1 A schematic diagram of a head-up display 10 describing an embodiment of the present invention. Such as figure 1 As shown, the present invention collects ambient light to enhance the display brightness in the head-up display. The ambient light is combined with the visible light of an electrically driven light source such as a light emitting diode (LED) or laser diode to form an image with enhanced brightness levels.

[0017] When the invention is used figure 1 In the case of the vehicle, an image 20 formed by a head-up display (HUD) unit 10 will be projected onto the diffusion film 220 and reflected on the windshield 30, which will then be seen by the driver. Optionally, the HUD unit can be installed on the top of the dashboard, as this can constitute the smallest obstacle to the driver's front-end vision. In addition, the HUD unit can also be installed in other suit...

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PUM

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Abstract

The invention discloses a head-up display comprising a mixed illumination system. A mixed light unit supplies a fully homogenized light source to a reflection display unit. A light-collecting optical unit collects ambient light and guides the ambient light to the mixed light unit. At the same time, the light emitted by an electric driving light source is guided to the mixed light unit. One or more optical elements guide the ambient light and the light source light to the mixed light unit so as to perform homogenization. A light condensation unit receives the uniformly mixed light and outputs condensed light to a polarizing light splitter. By using information of an electric signal source, a reflection display modulates the light from the polarizing light splitter and transmits the light back to the polarizing light splitter. The polarizing light establishes an image on a windshield through a projection lens unit.

Description

【Technical Field】 [0001] The present invention generally relates to a head-up display, and particularly relates to a lighting system for a head-up display. 【Background technique】 [0002] A head-up display (HUD) is a system that projects an image on a visible surface. The position of the visible surface allows the observer to always maintain a posture. The height of the display or dashboard is roughly level with the observer’s eyes, so that the observer always Maintain a head-up attitude without looking down. Head-up displays can be used in various environments such as motor vehicles, aircraft, helmets, and other important situations where the observer cannot distract his gaze. [0003] Although the head-up display is suitable for this kind of environment, it is sometimes difficult to distinguish the image under bright ambient light conditions. Therefore, a display that can be easily viewed under high ambient light conditions is needed. Prior to this, there have been many effort...

Claims

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Application Information

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IPC IPC(8): G02B27/01F21V13/00G01C21/36
Inventor 霍露明
Owner HONG KONG APPLIED SCI & TECH RES INST