CN1063395C - Anti-dazzlle lights system for drivers at night - Google Patents
Anti-dazzlle lights system for drivers at night Download PDFInfo
- Publication number
- CN1063395C CN1063395C CN97101472.8A CN97101472A CN1063395C CN 1063395 C CN1063395 C CN 1063395C CN 97101472 A CN97101472 A CN 97101472A CN 1063395 C CN1063395 C CN 1063395C
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- light valve
- actuator
- impulse singla
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
- F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
- F21S41/645—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/135—Polarised
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
Abstract
The present invention discloses an anti-dazzle system for drivers to meet motor vehicles at night, which is characterized in that a polarizer, a twisting nematic liquid crystal light valve and a polarizer are orderly installed on the front of vehicle headlights of a motor vehicle, wherein the light valve is controlled by a driver; a twisting nematic liquid crystal light valve and a polarizer are orderly installed on the back of a front viewing window of the motor vehicle, wherein the light valve is controlled by the driver. The driver outputs pulse signals with identical frequency and an identical duty ratio; the signals can shift phases within the range of 360 DEG; the intensity which penetrates through light is adjusted by adjusting the phases. The present invention has the advantages of convenient modulation, high sensitivity and rapid response time.
Description
The present invention relates to vehicle braking control system or its parts, relate in particular to anti-dazzlle lights system for drivers at night.
China's common automotive anti-glare device at present mainly contains following a few class:
(1) machinery is anti-dazzle, adopts louvered board, and equipment such as anti-dazzle device come transmission and control with the method for machinery, and to regulate the intensity of car light, shortcoming is that equipment is comparatively heavy and breaks down easily.
(2) electrochromism is anti-dazzle, adopts electrochromic device, carries out reversible look by automatically controlled dual injection electronics and ion and becomes to reach antidazzling purpose.Shortcoming is that electrochromic response time is long.
The anti-dazzlle lights system for drivers at night that the purpose of this invention is to provide a kind of high sensitivity, quick response, good reliability.
The present invention takes following measures in order to achieve the above object:
Anti-dazzlle lights system for drivers at night divides two parts, first has the palarizer of installing successively in the headlight front of self-propelled vehicle, meander configuration nematic liquid crystal light valve, palarizer and actuator, the phase-adjusted impulse singla that is provided by actuator drives liquid crystal light valve, and the polarized state of light that liquid crystal light valve and mutually orthogonal polaroid control are exported from car light; Second portion has meander configuration nematic liquid crystal light valve, palarizer and the actuator of installing successively in the preceding form back of self-propelled vehicle; The direction of polarization and the palarizer of palarizer are mutually orthogonal, and actuator offers the phase-adjusted impulse singla of liquid crystal light valve, adopt the phase place button of regulating actuator, when the phase place of the impulse singla that makes it to export and meeting on the other side's car the impulse singla phase place of actuator stagger fully, by the regulating action of light valve, to reach the antidazzling purpose of vehicles meeting.
Advantage of the present invention is: modulation is convenient, and highly sensitive, response time is fast, has very high practical value.
Elaborate below in conjunction with accompanying drawing.
Fig. 1 is the anti-dazzlle lights system for drivers at night structural representation;
Fig. 2 is a meander configuration nematic liquid crystal light valve structure scheme drawing;
Fig. 3 is the schematic block circuit diagram of liquid crystal light valve driving power.
Anti-dazzlle lights system for drivers at night divides two parts, first has the palarizer of installing successively in headlight 1 front of self-propelled vehicle 2, meander configuration nematic liquid crystal light valve 3, palarizer 4 and actuator 5, the phase-adjusted impulse singla that is provided by actuator 5 drives liquid crystal light valve 3, and the polarized state of light that liquid crystal light valve and mutually orthogonal polaroid control are exported from car light 1; Second portion has meander configuration nematic liquid crystal light valve 6, palarizer 7 and the actuator of installing successively in the preceding form back of self-propelled vehicle 8; The direction of polarization of palarizer 7 and palarizer 4 are mutually orthogonal, and actuator 8 offers liquid crystal light valve 5 phase-adjusted impulse singlas, adopt the phase place button of regulating actuator 8, when the phase place of the impulse singla that makes it to export and meeting on the other side's car the impulse singla phase place of actuator 5 stagger fully, by the regulating action of light valve, to reach the antidazzling purpose of vehicles meeting.
Meander configuration nematic liquid crystal light valve has two substrates 9, on two substrates, be coated with nesa coating 10 successively, liquid crystal orientating membrane 11, with 5 microns micro glass beads 12 two substrates that are coated with nesa coating and liquid crystal orientating membrane are separated, in micro glass bead, inject the nematic liquid crystal 13 of arranging and twist 90 degree along face.The effect of this light valve is when not having external voltage, the polarization of incident light direction is revolved turn 90 degrees, and when the external voltage effect, then keep polarization direction constant.
When night during meeting, the light that car light 1 sends becomes linearly polarized light through behind the polarizer 2, and either party driver can regulate the phase place button of actuator 8 on the car, and the impulse phase of actuator 5 staggers fully on the phase place of its output pulse signal and the other side's car.At this moment, the light valve 3 before the other side's Vehicular lamp is having voltage to do the time spent, and light valve does not change direction of polarization, and like this, polarized light just can not see through the analyzer 4 of back; On the other side's light valve 3, there is not voltage to do the time spent, light valve changes direction of polarized light makes it to twist 90 degree, become the linearly polarized light consistent through behind the analyzer 4 with the analyzer direction, pass through driver's forward sight light valve 6 and palarizer 7 again, just in time have voltage effect on the light valve 6 this moment, direction of polarized light is constant, and this direction is vertical in the direction of palarizer 7, thereby the other side's light also can be fallen by retaining.Simultaneously, in the process of modulation, the driver can both clearly see the light that own car light sends.Antidazzling purpose in the time of like this, just reaching nighttime meeting preferably.
Claims (3)
1. anti-dazzlle lights system for drivers at night, it is characterized in that system divides two parts, first has the palarizer [2] that install successively headlight [1] front at self-propelled vehicle, meander configuration nematic liquid crystal light valve [3], palarizer [4] and actuator [5], the phase-adjusted impulse singla that is provided by actuator [5] drives liquid crystal light valve [3], and the polarized state of light that liquid crystal light valve and mutually orthogonal polaroid control are exported from car light [1]; Second portion has meander configuration nematic liquid crystal light valve [6], palarizer [7] and the actuator of installing successively in the preceding form back of self-propelled vehicle [8]; The direction of polarization of palarizer [7] and palarizer [4] are mutually orthogonal, and actuator [8] offers the phase-adjusted impulse singla of liquid crystal light valve [5], adopt the phase place button of regulating actuator [8], when the phase place of the impulse singla that makes it to export and meeting on the other side's car the impulse singla phase place of actuator [5] stagger fully, by the regulating action of light valve, to reach the antidazzling purpose of vehicles meeting.
2. a kind of anti-dazzlle lights system for drivers at night according to claim 1, it is characterized in that said meander configuration nematic liquid crystal light valve has two substrates [9] and be coated with nesa coating [10] successively on two substrates, liquid crystal orientating membrane [11], with 5 microns micro glass beads [12] two substrates that are coated with nesa coating and liquid crystal orientating membrane are separated, in micro glass bead, inject the nematic liquid crystal [13] of arranging and twist 90 degree along face.
3. a kind of anti-dazzlle lights system for drivers at night according to claim 1 and 2, it is characterized in that said actuator [5], [8] circuit adopt the CMOS quartz crystal oscillator circuit, the cmos circuit dividing network obtains the impulse singla of a frequency stabilization, the phase shift link of this impulse singla is controlled by the A/D regulating circuit, make that impulse singla can phase shift in 360 degree scopes, be divided into 8 grades, every grade is moved 45 degree, the control phase button can phase adjusted; This impulse singla is added on add circuit mutually with the high-frequency signal of sending here from the 2KHZ pulse oscillation circuit behind pulse broadening treatment circuit, low frequency on-off signal that contains high-frequency impulse of last actuator output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101472.8A CN1063395C (en) | 1997-03-25 | 1997-03-25 | Anti-dazzlle lights system for drivers at night |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101472.8A CN1063395C (en) | 1997-03-25 | 1997-03-25 | Anti-dazzlle lights system for drivers at night |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1162714A CN1162714A (en) | 1997-10-22 |
| CN1063395C true CN1063395C (en) | 2001-03-21 |
Family
ID=5165761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97101472.8A Expired - Fee Related CN1063395C (en) | 1997-03-25 | 1997-03-25 | Anti-dazzlle lights system for drivers at night |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063395C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552594B (en) * | 2003-06-03 | 2011-04-20 | 陈友苏 | Method and apparatus for improving visual performance of impulse illuminating anti-dazzle system |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074155B (en) * | 2011-01-07 | 2012-04-18 | 华东师范大学 | Liquid crystal light valve theta modulation demodulation device and using method thereof |
| DE102012112127B4 (en) * | 2012-12-12 | 2024-02-08 | HELLA GmbH & Co. KGaA | Light module with LCD cover for a vehicle headlight |
| CN106016130A (en) | 2016-07-19 | 2016-10-12 | 开发晶照明（厦门）有限公司 | Headlight device and vehicle |
| TWI588043B (en) * | 2016-07-19 | 2017-06-21 | 開發晶照明（廈門）有限公司 | Vehicle Headlight Apparatus And Vehicle |
| JP6869099B2 (en) * | 2017-05-11 | 2021-05-12 | スタンレー電気株式会社 | Lamp unit, vehicle lighting system |
| US11204148B2 (en) * | 2019-06-21 | 2021-12-21 | Flex-N-Gate Advanced Product Development, Llc | Segmented switchable mirror lamp assembly |
-
1997
- 1997-03-25 CN CN97101472.8A patent/CN1063395C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552594B (en) * | 2003-06-03 | 2011-04-20 | 陈友苏 | Method and apparatus for improving visual performance of impulse illuminating anti-dazzle system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1162714A (en) | 1997-10-22 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |