CN112305793A - Retro-reflector - Google Patents
Retro-reflector Download PDFInfo
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- CN112305793A CN112305793A CN201910708414.2A CN201910708414A CN112305793A CN 112305793 A CN112305793 A CN 112305793A CN 201910708414 A CN201910708414 A CN 201910708414A CN 112305793 A CN112305793 A CN 112305793A
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- lcd
- control information
- controller
- liquid crystal
- retro
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 239000003086 colorant Substances 0.000 description 4
- 238000004590 computer program Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a retro-reflector. In particular, the retro-reflector is located in a tail light of a vehicle, comprising: a controller controlling the liquid crystal display device LCD and the reflective device; the controller is connected with the LCD and used for generating control information according to the received vehicle driving direction information and sending the control information to the LCD, wherein the control information is used for indicating the LCD to control the rotation state of liquid crystal molecules in the LCD and triggering the optical filter with a specified color in the LCD to display; the LCD is connected with the controller and the reflecting device and is used for controlling the rotating state of the liquid crystal molecules after receiving the control signal sent by the controller and displaying the color corresponding to the optical filter with the specified color; the reflecting device is connected with the LCD and used for reflecting incident light input to the tail lamp.
Description
Technical Field
The invention relates to the field of communication, in particular to a retro-reflector.
Background
In the related art, many vehicles are designed to have reverse driving. Therefore, in order to remind the following vehicles, a warning is made by arranging a retro-reflector at the tail of the vehicle. However, the existing retro-reflectors are realized by the control function of the lamps of the driver, and cannot be adjusted according to the actual direction of the vehicle, thereby causing troubles for the driving of the following vehicles.
Disclosure of Invention
An embodiment of the present invention provides a retro-reflector, which is located in a tail lamp of a vehicle, and includes: a controller that controls a Liquid Crystal Display (LCD) and a reflective device; the controller is connected with the LCD and used for generating control information according to the received vehicle driving direction information and sending the control information to the LCD, wherein the control information is used for indicating the LCD to control the rotation state of liquid crystal molecules in the LCD and triggering the optical filter with a specified color in the LCD to display; the LCD is connected with the controller and the reflecting device and is used for controlling the rotating state of the liquid crystal molecules after receiving the control signal sent by the controller and displaying the color corresponding to the optical filter with the specified color; the reflecting device is connected with the LCD and used for reflecting incident light input to the tail lamp.
According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
According to the invention, the controller is used for generating the display color for controlling the LCD according to the sensed driving direction, so that the problem that the adjustment cannot be carried out according to the actual direction of the vehicle in the related art, the trouble problem is brought to the driving of the following vehicles, and the effect of safe driving between the vehicles is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a block diagram of a retro-reflector according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an LCD display according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another LCD display according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of yet another LCD display according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
In the present embodiment, a retro-reflector is provided. Fig. 1 is a block diagram of a retro-reflector according to an embodiment of the present invention, which is located in a tail lamp of a vehicle, as shown in fig. 1, the apparatus including: a controller 12 that controls the liquid crystal display device LCD 14 and the reflection device 16;
the controller 12 is connected to the LCD 14, and configured to generate control information according to the received vehicle driving direction information, and send the control information to the LCD 14, where the control information is used to instruct the LCD 14 to control a rotation state of liquid crystal molecules in the LCD 14 and trigger a color filter of a specific color in the LCD 14 to display the control information;
the LCD 14 is connected to the controller 12 and the reflector 16, and is configured to control a rotation state of the liquid crystal molecules after receiving the control signal sent by the controller 12, and display a color corresponding to the color filter of the designated color;
the reflection device 16 is connected to the LCD 14, and reflects the incident light inputted to the tail light.
Optionally, when the driving direction of the vehicle sensed by the controller is forward driving, the controller generates first control information, where the first control information is used to instruct the LCD to add a first electrode to the liquid crystal molecules and trigger a filter of a first designated color in the LCD to display.
Optionally, after receiving the first control information, the LCD adds a first electrode on the liquid crystal molecules to reject the incident light to enter the reflective device and display the first designated color.
Optionally, when the driving direction of the vehicle sensed by the controller is oblique driving, the controller generates second control information, where the second control information is used to instruct the LCD to add a second electrode to the liquid crystal molecules and trigger a filter of a second designated color in the LCD to display.
Optionally, after receiving the first control information, the LCD adds a second electrode on the liquid crystal molecules to allow a portion of the incident light to enter the reflective device and display a second designated color.
Optionally, when the driving direction of the vehicle sensed by the controller is reverse driving, the controller generates third control information, where the third control information is used to instruct the LCD to maintain a current electrode state on the liquid crystal molecules, and trigger a filter of a third specified color in the LCD to display.
Optionally, after receiving the third control information, the LCD maintains a current electrode state on the liquid crystal molecules to allow the incident light to enter the reflective device and display a third designated color.
Specifically, the LCD is filled with liquid crystal molecules between polarizing plates perpendicular to each other between upper and lower barrier sheets. The traveling direction of light is changed by controlling the rotation of the liquid crystal molecules using an electric field. Meanwhile, filters of different colors may be disposed between the polarizing plate and the liquid crystal layer filled with liquid crystal molecules. Different color effects can be displayed by different traveling directions of light and different color filters.
It is noted that the above-mentioned first electrode refers to the largest electrode that is allowed to be added in the LCD. And the second electrode is a weaker motor than the first electrode by not less than 0.
For example, FIG. 2 is a schematic diagram of an LCD display according to an embodiment of the invention. As shown in fig. 2, filters of different colors are disposed between the upper polarizing plate and the liquid crystal layer. When incident light enters the LCD from the lower polarizer, the incident optical fiber will have only one directional light wave without adding any electrodes. When passing through the liquid crystal molecules, since the liquid crystal molecules are rotated by 90 degrees in total, when the light wave reaches the upper polarizing plate, the polarization direction of the light wave is rotated by just 90 degrees, and at this time, the light can pass through smoothly. At this time, the light strikes the red filter sheet, and red can be displayed. At the same time, it can be seen from fig. 2 that the reflector element is now capable of inputting light, i.e. of reflecting incident light
FIG. 3 is a schematic diagram of another LCD display according to an embodiment of the present invention. As shown in fig. 3, if the first electrode is added, the liquid crystal molecules stand due to the influence of the electric field. Although the direction of the light wave is not changed, the light wave cannot reach the upper polarizer through the standing liquid crystal molecules, and thus, red color cannot be displayed. At this point, no color is visually visible and thus would be the default LCD screen state.
FIG. 4 is a schematic diagram of yet another LCD display according to an embodiment of the present invention. As shown in fig. 4, if the second electrode is added, the liquid crystal molecules are all in a tilted state due to the influence of the electric field, and although the direction of the light wave is not changed, it is impossible to realize that all the light wave cannot reach the upper polarizer through the liquid crystal molecules in the tilted state. Therefore, the darkness of the displayed red color decreases, i.e., it is dark red.
It is noted that a typical PCD is considered to have 3 different filters (three primary colors: red, green, blue). Therefore, in the present embodiment, any color that can be displayed based on three primary colors is within the scope of the present embodiment. Will not be described in detail herein.
Optionally, the retro-reflector further comprises: and the sensor is connected with the controller and used for sending the driving direction information of the vehicle to the controller after sensing the driving direction of the vehicle.
The sensor is used for providing the controller with the support of the driving direction of the vehicle, and the motion state of the current vehicle can be controlled through the real-time sensing of the sensor.
Optionally, the LCD further displays a warning content for warning a following vehicle by a boundary effect according to the control information.
Specifically, the boundary effect referred to herein means that the LCD display content can still be presented in a dark environment (e.g., at night) by configuring the illumination device at the edge of the LCD (including but not limited to providing a light source, painting a fluorescent material that can be displayed at night). Meanwhile, in order to better remind the motion state of the current vehicle of the rear vehicle, the alarm content for alarming the current vehicle condition of the rear vehicle through images, icons, Chinese characters, English characters and the like can be displayed on the LCD.
Optionally, the controller is further configured to generate temperature control information according to the working state reported by the LCD, and send the temperature control information to the LCD; and the LCD is also used for adjusting the temperature according to the temperature control information sent by the controller.
Considering that the sensitivity of the LCD is temperature dependent, the controller needs to control the display status of the LCD on one hand, and also needs to consider the display safety and lifetime of the LCD, so that the temperature of the LCD needs to be obtained by the temperature sensor in real time for adjustment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A retro-reflector for positioning in a tail light of a vehicle, comprising: a controller controlling the liquid crystal display device LCD and the reflective device;
the controller is connected with the LCD and used for generating control information according to the received vehicle driving direction information and sending the control information to the LCD, wherein the control information is used for indicating the LCD to control the rotation state of liquid crystal molecules in the LCD and triggering the optical filter with a specified color in the LCD to display;
the LCD is connected with the controller and the reflecting device and is used for controlling the rotating state of the liquid crystal molecules after receiving the control signal sent by the controller and displaying the color corresponding to the optical filter with the specified color;
the reflecting device is connected with the LCD and used for reflecting incident light input to the tail lamp.
2. The retro-reflector as set forth in claim 1,
when the driving direction of the vehicle sensed by the controller is forward driving, the controller generates first control information, wherein the first control information is used for indicating the LCD to add a first electrode on the liquid crystal molecules and triggering a filter with a first designated color in the LCD to display.
3. The retro-reflector as set forth in claim 2,
after receiving the first control information, the LCD adds a first electrode on the liquid crystal molecules to reject the incident light from entering the reflective device and displays the first designated color.
4. The retro-reflector of claim 1, wherein the controller generates second control information when the driving direction of the vehicle sensed by the controller is oblique driving, wherein the second control information is used for instructing the LCD to add a second electrode on the liquid crystal molecules and to trigger a filter of a second specified color in the LCD to display.
5. The retro-reflector as set forth in claim 4,
after receiving the first control information, the LCD adds a second electrode on the liquid crystal molecules to allow a portion of the incident light to enter the reflective device and display a second designated color.
6. The retro-reflector of claim 1, wherein the controller generates third control information when the driving direction of the vehicle sensed by the controller is reverse driving, wherein the third control information is used for indicating that the LCD maintains a current electrode state on the liquid crystal molecules and triggering a filter of a third designated color in the LCD to display, wherein the third designated color comprises: red.
7. The retro-reflector as set forth in claim 4,
upon receiving the third control information, the LCD maintains a current electrode state on the liquid crystal molecules to allow the incident light to enter the reflective device and display a third designated color.
8. The retro-reflector according to any one of claims 1 to 5, further comprising:
and the sensor is connected with the controller and used for sending the driving direction information of the vehicle to the controller after sensing the driving direction of the vehicle.
9. A retro-reflector according to any one of claims 1 to 5,
the LCD also displays warning contents for warning a following vehicle through a boundary effect according to the control information.
10. A retro-reflector according to any one of claims 1 to 5,
the controller is also used for generating temperature control information according to the working state reported by the LCD and sending the temperature control information to the LCD;
and the LCD is also used for adjusting the temperature according to the temperature control information sent by the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708414.2A CN112305793A (en) | 2019-08-01 | 2019-08-01 | Retro-reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708414.2A CN112305793A (en) | 2019-08-01 | 2019-08-01 | Retro-reflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112305793A true CN112305793A (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910708414.2A Pending CN112305793A (en) | 2019-08-01 | 2019-08-01 | Retro-reflector |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003066442A (en) * | 2001-06-15 | 2003-03-05 | Sharp Corp | Reflection type display |
| CN101819341A (en) * | 2009-02-26 | 2010-09-01 | 佛山市顺德区汉达精密电子科技有限公司 | Liquid-crystal display with overheat protection function and protection method thereof |
| CN102778778A (en) * | 2012-07-05 | 2012-11-14 | 京东方科技集团股份有限公司 | Transflective liquid crystal display panel and transflective type liquid crystal displayer |
| CN106864355A (en) * | 2015-11-27 | 2017-06-20 | Sl株式会社 | Lamps apparatus for vehicle |
| CN106896580A (en) * | 2017-04-27 | 2017-06-27 | 京东方科技集团股份有限公司 | A kind of lighting fixture and car lamp device |
| WO2018216471A1 (en) * | 2017-05-23 | 2018-11-29 | 株式会社小糸製作所 | Display device for vehicles, control method for same, program and computer-readable storage medium |
| CN109386813A (en) * | 2017-08-10 | 2019-02-26 | 株式会社小糸制作所 | Display apparatus |
-
2019
- 2019-08-01 CN CN201910708414.2A patent/CN112305793A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003066442A (en) * | 2001-06-15 | 2003-03-05 | Sharp Corp | Reflection type display |
| CN101819341A (en) * | 2009-02-26 | 2010-09-01 | 佛山市顺德区汉达精密电子科技有限公司 | Liquid-crystal display with overheat protection function and protection method thereof |
| CN102778778A (en) * | 2012-07-05 | 2012-11-14 | 京东方科技集团股份有限公司 | Transflective liquid crystal display panel and transflective type liquid crystal displayer |
| CN106864355A (en) * | 2015-11-27 | 2017-06-20 | Sl株式会社 | Lamps apparatus for vehicle |
| CN106896580A (en) * | 2017-04-27 | 2017-06-27 | 京东方科技集团股份有限公司 | A kind of lighting fixture and car lamp device |
| WO2018216471A1 (en) * | 2017-05-23 | 2018-11-29 | 株式会社小糸製作所 | Display device for vehicles, control method for same, program and computer-readable storage medium |
| CN109386813A (en) * | 2017-08-10 | 2019-02-26 | 株式会社小糸制作所 | Display apparatus |
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