CN109027970B

CN109027970B - Intelligent high beam lamp control device and control method thereof

Info

Publication number: CN109027970B
Application number: CN201810640141.8A
Authority: CN
Inventors: 张卫锴; 黄善兴; 陈钢; 王志军
Original assignee: Nanjing East China Electronic Information Technology Co ltd; Nanjing CEC Panda LCD Technology Co Ltd; Nanjing CEC Panda FPD Technology Co Ltd
Current assignee: Nanjing CEC Panda FPD Technology Co Ltd
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2020-08-04
Anticipated expiration: 2038-06-21
Also published as: CN109027970A

Abstract

The invention provides an intelligent high beam lamp control device and a control method thereof, comprising a light source, a first panel positioned above the light source, a second panel positioned above the first panel and a balancing device used for controlling the second panel; the light source is changed into parallel light through the first panel and enters the second panel, and the balancing device controls the direction and the intensity of the parallel light emitted out of the second panel according to the environmental condition. According to the invention, the parallel light beams of the high beam are improved through the first panel to be more concentrated, and the adjustment of the irradiation distance of the high beam is realized through the balancing device and the second panel, so that the divergence degree of the high beam is greatly reduced, and the function of adjusting the irradiation distance of the high beam is realized, thereby ensuring that the driver can run more safely and other drivers can run more safely.

Description

Intelligent high beam lamp control device and control method thereof

Technical Field

The invention relates to the field of display device manufacturing, in particular to an intelligent high beam lamp control device and a control method thereof.

Background

Along with the development of society, the automobile has gradually become mass consumption as the instrument of riding instead of walk, and the high beam is one of the important function on the automobile, can improve driving sight, enlarges and observes the field of vision, especially on the dark road surface that does not have the street lamp, opens the visual range of high beam and will be greater than the passing lamp far away, therefore the high beam can play fine help to driving safety under specific environment. However, when the ordinary high beam is turned on, the brightness and the divergence of the light are high, and the unreasonable use of the high beam will cause interference or certain damage to the eyes of the opposite coming drivers, so that the perceptibility to the speed and distance of the coming vehicle is reduced, the judgment to the width of the coming vehicle is reduced, and the operation error is easily caused; in addition, the high beam is turned on for the rear vehicle, so that the rearview mirror of the front vehicle generates large-area halo, the visual range of the front vehicle is reduced, and potential safety hazards exist; therefore, the use of high beam has an impact on driving safety to some extent.

Disclosure of Invention

The invention aims to provide an intelligent high beam lamp control device and a control method thereof, and solves the problem that the existing high beam lamp is high in brightness and divergence.

The invention provides an intelligent high beam control device, which comprises a light source, a first panel, a second panel and a balancing device, wherein the first panel is positioned above the light source; the light source is changed into parallel light through the first panel and enters the second panel, and the balancing device controls the direction and the intensity of the parallel light emitted out of the second panel according to the environmental condition.

Further, the first panel comprises a first substrate and a second substrate which are oppositely arranged, and liquid crystal molecules and polymers which are positioned between the first substrate and the second substrate.

Further, the liquid crystal molecules are positive liquid crystal molecules or negative liquid crystals.

Further, the liquid crystal molecules adopt a vertical alignment.

Further, the optical refractive index of the liquid crystal molecules is the same as the effective refractive index of the polymer.

The first substrate and the second substrate are glass substrates or flexible substrates.

Furthermore, the second panel comprises a third substrate and a fourth substrate which are oppositely arranged, the third substrate and the fourth substrate are respectively provided with a first electrode and a second electrode, and liquid crystal molecules and dye molecules are arranged between the third substrate and the fourth substrate.

Furthermore, the included angle between the liquid crystal molecules and the normal direction of the fourth substrate is 1-5 degrees.

The invention also provides a control method of the intelligent high beam, which comprises the following steps: s1: the light source serving as a high beam enters the first panel, and parallel incident light is formed by the light source through the parallel light-transmitting layer of the first panel and enters the second panel; s2: the balancing device controls the dye liquid crystal layer of the second panel to turn and arrange according to the environmental condition and controls the irradiation distance of the parallel light beams through the second panel.

According to the invention, the parallel light beams of the high beam are improved through the first panel to be more concentrated, and the adjustment of the irradiation distance of the high beam is realized through the balancing device and the second panel, so that the divergence degree of the high beam is greatly reduced, and the function of adjusting the irradiation distance of the high beam is realized, thereby ensuring that the driver can run more safely and other drivers can run more safely.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent high beam lamp control device according to the present invention.

Detailed Description

The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.

The invention provides an intelligent high beam lamp control device, which comprises a light source 10, a first panel 30 positioned above the light source 10, a second panel 40 positioned above the first panel 30 and a balancing device 20 used for controlling the second panel 40. The light source 10 is changed into parallel light through the first panel 30 and enters the second panel 40, and the balancing device controls the direction and intensity of the parallel light exiting the second panel according to the environmental conditions.

The first panel 30 includes a first substrate 31 and a second substrate 32 disposed opposite to each other, and a first liquid crystal molecule 33 and a polymer 34 disposed between the first substrate 31 and the second substrate 32, wherein the first liquid crystal molecule 33 and the polymer 34 form a polymer network liquid crystal (PN L C) structure, which can make the divergent light beams more convergent and achieve a direct illumination effect, the first liquid crystal molecule 33 is a nematic liquid crystal molecule, which can be a positive liquid crystal molecule or a negative liquid crystal, the first liquid crystal molecule 33 adopts a vertical alignment, the optical refractive index of the first liquid crystal molecule 33 is the same as the effective refractive index of the polymer 34, the first substrate 31 and the second substrate 32 are glass substrates or flexible substrates, the first liquid crystal molecule 33 and the polymer 34 serve as parallel light-transmitting layers, the light source 10 forms parallel incident light through the parallel light-transmitting layers to enter the second panel 40, and the first panel 30 can improve the parallel light beams of the high beam to make them more concentrated.

The second panel 40 includes a third substrate 41 and a fourth substrate 42 disposed opposite to each other, a first electrode 43 is disposed on the third substrate 41, a second electrode 44 is disposed under the fourth substrate 42, a second liquid crystal molecule 45 and a dye molecule 46 are disposed between the third substrate 41 and the fourth substrate 42, and the second liquid crystal molecule 45 and the dye molecule 46 are fully mixed together. Wherein the angle between the second liquid crystal molecules 45 and the normal direction of the fourth substrate 42 is 1-5 deg. The second liquid crystal molecules 45 in the second panel 40 rotate according to the intensity of the applied electric field to adjust the distance of the light. The second liquid crystal molecules 45 and the dye molecules 46 constitute a dye liquid crystal layer, and the dye liquid crystal layer can adjust the beam distance. The main function of the balancing device 20 is to control the dye liquid crystal layer of the second panel 40 to turn and arrange according to the environmental conditions, that is, after the distance of irradiation of the high beam lamp is set, when the vehicle runs under different road conditions (such as uphill or downhill process), the sensing device sends out an instruction to adjust the electric field intensity, and the liquid crystal is controlled to rotate, so that the light irradiation distance is always at a relatively stable distance, and the condition that the light angle is too high or too low is avoided.

The during operation, light source 10 as the far-reaching headlamp is through first panel 30, improve by first panel 30 and become the parallel beam as the light source of far-reaching headlamp and make it concentrate more, through turning to of dye liquid crystal layer molecule in the balancing unit 20 control second panel 40, the distance that parallel beam shines in can realizing the accurate control far-reaching headlamp, thereby the light beam divergence degree that very big alleviates the far-reaching headlamp and realize the function that the far-reaching headlamp shines the distance and adjusts, thereby make driver self travel with other drivers' travel safelyr.

The invention also provides a control method of the intelligent high beam, which comprises the following steps: s1: the light source 10 as a high beam enters the first panel 30, and the light source forms parallel incident light through the parallel light-transmitting layer of the first panel 30 and enters the second panel 40; s2: the balancing device 20 controls the dye liquid crystal layer of the second panel 40 to be turned and arranged according to the environmental conditions, and controls the irradiation distance of the parallel light beams through the second panel 40.

Claims

1. The utility model provides an intelligence high beam lamp controlling means which characterized in that: the device comprises a light source, a first panel positioned above the light source, a second panel positioned above the first panel and a balancing device used for controlling the second panel; the balancing device controls the direction and the intensity of the parallel light emitted out of the second panel according to the environmental condition; the first panel comprises a first substrate and a second substrate which are oppositely arranged, and a first liquid crystal molecule and a polymer which are positioned between the first substrate and the second substrate, wherein the first liquid crystal molecule and the polymer form a polymer network liquid crystal structure, the first liquid crystal molecule and the polymer are used as parallel light-transmitting layers, and the light source forms parallel incident light through the parallel light-transmitting layers of the first panel and enters the second panel; the second panel comprises a third substrate and a fourth substrate which are oppositely arranged, a first electrode and a second electrode are respectively arranged on the third substrate and the fourth substrate, second liquid crystal molecules and dye molecules are arranged between the third substrate and the fourth substrate, and an included angle between the second liquid crystal molecules and the normal direction of the fourth substrate is 1-5 degrees.

2. The intelligent high beam lamp control device according to claim 1, wherein: the first liquid crystal molecules are positive liquid crystal molecules or negative liquid crystal molecules.

3. The intelligent high beam lamp control device according to claim 2, wherein: the first liquid crystal molecules adopt vertical alignment.

4. The intelligent high beam lamp control device according to claim 1, wherein: the optical refractive index of the first liquid crystal molecules is the same as the effective refractive index of the polymer.

5. The intelligent high beam lamp control device according to claim 1, wherein: the first substrate and the second substrate are glass substrates or flexible substrates.

6. A control method of the intelligent high beam control device according to any one of claims 1 to 5, comprising the steps of:

s1: the light source serving as a high beam enters the first panel, and parallel incident light is formed by the light source through the parallel light-transmitting layer of the first panel and enters the second panel;

s2: the balancing device controls the dye liquid crystal layer of the second panel to turn and arrange according to the environmental condition and controls the irradiation distance of the parallel light beams through the second panel.