CN204786017U - Leaded light illumination self -adaptation laser head -light - Google Patents

Abstract

The utility model relates to a self-adaptive laser headlamp for light guide lighting, which belongs to the field of photoelectric technology. The headlight includes a light source, an optical fiber light guide module, a uniform light shaping module, a reflector, and a digital light processing projection module; the light emitted by the light source is transmitted to the uniform light shaping module through the optical fiber light guide module, and the uniform light shaping module uniform The uniform light spot with the same size as the digital micro-mirror array in the digital light processing projection module is obtained by means of chemical shaping, and the uniform light spot is transmitted to the digital light processing projection module through the reflector for digital light processing, and then projected to a distance of 25m for light distribution through the projection lens Screen. The utility model provides a self-adaptive laser headlight for light guiding lighting, which has the advantages of intelligent lighting, high brightness, low energy consumption, simple structure and the like compared with traditional car lights.

Description

A light guide lighting adaptive laser headlight

technical field

The utility model belongs to the field of photoelectric technology, and relates to a self-adaptive laser headlamp for light guiding lighting.

Background technique

Car headlights, also known as "headlights", are installed on both sides of the head of the car and are mainly used for lighting the road at night. In the process of driving at night, in order to enable the driver to drive more comfortably and safely, the headlight lighting should meet certain light distribution requirements. Therefore, the regulations ECER98 "Unified Regulations on the Approval of Automobile Headlamps Equipped with Gas Discharge Light Sources" and regulations ECER123 "Uniform Regulations on the Certification of Adaptive Front Lighting Systems (AFS) for Motor Vehicles" were successively issued. Adaptive lighting system is the main development direction of the future automotive headlight system. The current adaptive headlights are mainly divided into the following categories: 1. Relying on the traditional car light system and adding a mechanical deflection module to make the overall deflection of the car lights achieve different light patterns; 2. A small number of front lights that use baffles as light distribution modules The lamp realizes different light types by switching different baffles; 3. Due to the advantages of low cost, high reliability and small size of a single LED, multiple LEDs are used as the light source of the headlight, and different light types are realized by controlling the brightness of individual LEDs. The above adaptive headlights have a common problem: the light patterns that can be realized are very limited, and the adaptive light pattern is exchanged for space. Among them, the mechanical type can only achieve simple light pattern deflection and cannot achieve other more complex lighting, baffles The type is also that the number of light types is limited, and in recent years, due to the shortcomings of the low light energy utilization rate of the baffle type headlights, it has been gradually eliminated.

Utility model content

In view of this, the purpose of this utility model is to provide a light-guided lighting adaptive laser headlamp, which uses laser light as the light source, optical fiber as the light-guiding element, and a digital light processing device as the light distribution element. Intelligent lighting, high brightness, low energy consumption, simple structure and other advantages.

In order to achieve the above object, the utility model provides the following technical solutions:

A light-guided lighting adaptive laser headlight, the headlight includes a light source, an optical fiber light guide module, a uniform light shaping module, a reflector, and a digital light processing projection module; the light emitted by the light source is transmitted to the uniform light through the optical fiber light guide module The light shaping module, the uniform light shaping module performs homogenization and shaping on it to obtain a uniform light spot that is consistent with the size of the digital micromirror array in the digital light processing projection module, and the uniform light spot is transmitted to the digital light processing projection module through the reflector for digital light processing. The lighting pattern picture is then projected to the light distribution screen through the projection lens to realize the lighting pattern of the headlight.

Further, the light source is a red, green, and blue laser diode, and the red, green, and blue laser diodes are combined through an optical fiber according to a certain power ratio to obtain white light.

Further, the optical fiber light guiding module is used as a beam combining light guiding element, and the fiber core material is quartz.

Further, the homogenization and shaping module includes a collimator lens, a fly-eye lens, and an integral focusing lens in sequence.

Further, the fly-eye lens includes several rectangular microlenses, and the aspect ratio of the rectangular microlenses is consistent with the size ratio of the digital micromirror array.

Further, the material of the fly-eye lens and the integral focusing lens is PMMA.

Further, the digital light processing projection module includes a digital micromirror array device, its drive control system, and a projection lens.

Further, the headlamp also includes a heat dissipation module and a housing.

The beneficial effect of the utility model is that: the utility model provides a light-guiding lighting self-adaptive laser headlamp, which uses a three-color laser with high brightness, low energy consumption and good monochromaticity as the light source, so that the lamp has light color Adjustable features; at the same time, the optical fiber is used as the light guide device to separate the light source and the light distribution system to achieve photoelectric isolation, which reduces the burden on the front of the car body from the heat of the light source and the installation space; moreover, the digital micromirror is used as the light distribution system , can easily realize any lighting pattern, and make the car lights realize self-adaptive lighting, which has a good application prospect.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a structural diagram of the self-adaptive laser headlight of the utility model;

Figure 2 is a schematic diagram of the system of the adaptive laser headlamp for light guide lighting.

Detailed ways

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

The utility model provides a self-adaptive laser headlamp for light guiding illumination, which adopts three semiconductor lasers which respectively generate three primary colors of red, green and blue as light sources, and beams are combined through optical fibers. The outgoing light is homogenized and shaped at the optical fiber exit port to obtain a square spot with the same size as the DMD. After light processing by the digital micromirror, the outgoing light is projected to the light distribution screen at a distance of 25 meters through the projection lens to realize various adaptive car light patterns. , enabling adaptive lighting.

The headlight includes a light source, an optical fiber light guide module, a uniform light shaping module, a reflector, and a digital light processing projection module; the light emitted by the light source is transmitted to the uniform light shaping module through the optical fiber light guide module, and the uniform light shaping module uniform The uniform light spot with the same size as the digital micromirror array can be obtained by means of chemical shaping, and the uniform light spot is transmitted to the digital light processing projection module through the reflector for digital light processing to obtain the headlight pattern picture, and then projected to the light distribution screen through the projection lens to realize the headlight Lighting type.

The light source is a red, green, and blue laser diode, and the red, green, and blue laser diodes are combined through an optical fiber according to a certain power ratio to obtain white light; the power ratio of the red, green, and blue light can be 2.16:1.48:0.92.

The optical fiber light guide module is used as the combined light guide element, and the fiber core material is quartz.

The homogenization and shaping module sequentially includes a collimator lens, a fly-eye lens, and an integral focusing lens. The fly-eye lens includes several rectangular microlenses, and the aspect ratio of the rectangular microlenses is consistent with the size ratio of the digital micromirror array (for example, if the size ratio of the DLP3000 model micromirror array is 16:9, then the aspect ratio of the rectangular microlenses is 16 :9). The material of fly eye lens and integral focusing lens is PMMA.

The digital light processing projection module includes a digital micromirror array device, a drive control system and a projection lens. The digital micromirror device performs digital light processing on the incident light spot and projects the corresponding image to the projection lens. The projection lens needs to convert the size ratio of the digital micromirror array to be consistent with the size ratio of the light distribution screen (for example, the 16: The size ratio of 9 is converted to 5.2:1), so that the area of the micromirror array can be fully utilized to realize the car light pattern image.

The headlight also includes a heat dissipation module and housing, which reduces the heat dissipation and installation requirements of the headlight at the front of the vehicle body.

The utility model provides a self-adaptive laser headlamp for light-guiding illumination, which uses a digital micromirror device as a light distribution element to generate an adaptive vehicle light pattern; the spectrum can be adjusted by adjusting the power of three-color laser diodes.

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (8)

1. A light guide illumination self-adaptive laser headlamp is characterized in that: the headlamp comprises a light source, an optical fiber light guide module, a uniform light shaping module, a reflector, and a digital light processing projection module; the light emitted by the light source passes through the optical fiber The light guide module is transmitted to the uniform light shaping module, and the uniform light shaping module performs homogenization and shaping to obtain a uniform light spot with the same size as the digital micromirror array in the digital light processing projection module, and the uniform light spot is transmitted to the digital light processing projection module through the reflector Carry out digital light processing to obtain the headlight pattern picture, and then project it to the light distribution screen through the projection lens to realize the headlight light pattern. 2 . The adaptive laser headlamp for light guiding illumination according to claim 1 , wherein the light source is a red, green and blue laser diode. 3 . The adaptive laser headlamp for light guiding illumination according to claim 1 , wherein the core material of the optical fiber light guiding module is quartz. 4 . 4 . The adaptive laser headlamp for light guide lighting according to claim 1 , wherein the uniform light shaping module includes a collimating lens, a fly-eye lens, and an integral focusing lens in sequence. 5. A kind of light-guiding illumination self-adaptive laser headlight according to claim 4, is characterized in that: described fly-eye lens comprises several rectangular microlenses, and the aspect ratio of described rectangular microlenses and digital micromirror array The size ratio is consistent. 6 . The light-guiding lighting adaptive laser headlight according to claim 4 , wherein the material of the fly-eye lens and the integral focusing lens is PMMA. 7 . The adaptive laser headlamp for light guide lighting according to claim 1 , wherein the digital light processing projection module includes a digital micromirror array device, its drive control system, and a projection lens. 8 . The light-guiding lighting adaptive laser headlamp according to claim 1 , wherein the headlamp further comprises a heat dissipation module and a housing.