CN116123478A - Car light optical module, optical module control system and control method - Google Patents

Car light optical module, optical module control system and control method Download PDF

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Publication number
CN116123478A
CN116123478A CN202310057544.0A CN202310057544A CN116123478A CN 116123478 A CN116123478 A CN 116123478A CN 202310057544 A CN202310057544 A CN 202310057544A CN 116123478 A CN116123478 A CN 116123478A
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CN
China
Prior art keywords
optical module
liquid lens
distance
diaphragm plate
led lamp
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Pending
Application number
CN202310057544.0A
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Chinese (zh)
Inventor
熊衍建
唐磊
刘岳飞
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Changzhou Xingyu Automotive Lighting Systems Co Ltd
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Changzhou Xingyu Automotive Lighting Systems Co Ltd
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Publication date
Application filed by Changzhou Xingyu Automotive Lighting Systems Co Ltd filed Critical Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority to CN202310057544.0A priority Critical patent/CN116123478A/en
Publication of CN116123478A publication Critical patent/CN116123478A/en
Pending legal-status Critical Current

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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
    • F21S41/25—Projection lenses
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention provides a car light optical module, an optical module control system and a control method, and relates to the technical field of car light projection, wherein the car light optical module comprises a PCB (printed circuit board), LED (light-emitting diode) lamp beads, a diaphragm plate, a liquid lens and a liquid lens control plate, and the PCB is a light source plate and is used for providing current and control commands for the LED lamp beads; the LED lamp beads are arranged on the PCB in an array manner; the diaphragm plate is used for homogenizing light emitted by the LED lamp beads; the liquid lens is used for amplifying and imaging the graph after being homogenized by the diaphragm plate; the liquid lens control board is used for controlling the voltage applied to the liquid lens so as to change the focal length of the liquid lens; according to the distance and angle between the observer and the vehicle, the liquid lens is controlled to change the focal length of the liquid lens in real time, so that the observer can observe clear dynamic images at any angle and any position.

Description

Car light optical module, optical module control system and control method
Technical Field
The invention relates to the technical field of car light projection, in particular to a car light optical module, an optical module control system and a control method.
Background
Automotive lamps are used as a lighting device, and are generally used as a road lighting tool only during night driving, and are also used as a prompting tool for sending various vehicle type signals. When used as a signal prompting tool, the display device can be realized by combining dynamic display effects. The naked eye 3D technology can enable an observer to observe a stereoscopic image through a screen without any auxiliary tool, and the naked eye 3D technology is applied to the automobile tail lamp, and when the position of the observer is changed, a transformed stereoscopic virtual image can be observed, so that the effect of dynamic display is achieved. The current mainstream naked eye 3D technical means are as follows: slit liquid crystal gratings, directional light sources, active backlights, in either way, have specific requirements for the position and viewing direction of the observer.
For example, in patent CN201210003117.6, an naked eye 3D projection screen and an naked eye 3D projection system achieve the effect of naked eye 3D through a micro-cylindrical lens; patent CN201711080471.8 bore hole 3D display device realizes bore hole 3D's effect through multilayer lens's mode, but the effect that realizes bore hole 3D like this all requires the observer to just can realize in certain within range, and the structure is complicated.
However, the automobile moves in real time during the running process, the position of the automobile relative to the observer changes in real time, if the observer observes clear images at any time to achieve the effect of naked eyes, the observer is usually required to fix the position or wear grating glasses, and the observer cannot observe clear images at any angle and any position of the automobile lamp.
Disclosure of Invention
The invention discloses a car light optical module, an optical module control system and a control method, which solve the problem that the existing car light optical module cannot ensure that an observer can observe clear dynamic images at any angle and any position, so that the observer can observe clear dynamic images at any angle and any position, and the optical module has a simple structure and a small volume and can be spliced.
In order to achieve the above purpose, the technical scheme of the invention is specifically realized as follows:
the invention discloses a car light optical module, which comprises a PCB (printed circuit board), LED (light-emitting diode) lamp beads, a diaphragm plate, a liquid lens and a liquid lens control board, wherein the PCB is a light source plate and is used for providing current and control commands for the LED lamp beads; the LED lamp beads are arranged on the PCB in an array manner; the diaphragm plate is used for homogenizing the light emitted by the LED lamp beads; the liquid lens is used for amplifying and imaging the graph which is homogenized by the diaphragm plate; the liquid lens control board is used for controlling the voltage applied to the liquid lens so as to change the focal length of the liquid lens.
Further, the car light optical module still includes the shell, covers and establishes PCB board, LED lamp pearl, diaphragm board, liquid lens and the outside of liquid lens control panel.
Further, the diaphragm plate is made of a light-transmitting material, black paint is sprayed on one surface of the diaphragm plate, which is close to the liquid lens, a pattern is engraved on the surface, which is sprayed with the black paint, and the position of the engraved pattern corresponds to the center of the liquid lens.
Further, the minimum distance D between the LED lamp beads when arranged on the PCB meets the following formula:
Figure BDA0004060748980000021
wherein A is a design index of uniformity, d is a minimum arrangement interval of LED lamp beads when the diaphragm plate is made of transparent material, I 0 And h is the distance from the LED lamp beads to the diaphragm plate, and m is the lambertian coefficient of the pearlescent intensity distribution of the LED lamps.
Further, the diaphragm plate is made of transparent light-transmitting material or milky light-transmitting material.
Further, the shell is made of ABS black opaque material.
Further, the PCB board is a whole board or a splice board.
Further, the PCB is a flexible substrate or a non-flexible substrate.
Another aspect of the invention discloses an optical module control system, comprising a car light optical module, a radar and a control unit as described above, wherein the radar is fixedly installed outside the vehicle, is used for detecting the distance and angle between an observer and the vehicle, and is sent to the control unit; the control unit is used for calculating the distance of the liquid lens which is actually required to be imaged according to the distance and angle data sent by the radar, and sending a control command for adjusting the focal length to the optical module according to the calculated actual imaging distance.
In another aspect, the invention discloses a control method of an optical module control system, which includes the following steps:
the radar detects the distance and the angle between the observer and the vehicle in real time and sends the distance and the angle to the control unit;
the control unit receives the distance and the angle between the observer and the vehicle, which are sent by the radar, calculates the actual imaging distance, and sends a control command for adjusting the focal length to the optical module according to the calculated actual imaging distance;
the liquid lens control board in the optical module receives the control command and adjusts the voltage of the liquid lens, so that the focal length of the liquid lens is changed.
The beneficial technical effects are as follows:
1. the application discloses car light optical module, including PCB board, LED lamp pearl, diaphragm board, liquid lens and liquid lens control panel, the PCB board is the light source board for provide electric current and control command for LED lamp pearl; the LED lamp beads are arranged on the PCB in an array manner; the diaphragm plate is used for homogenizing the light emitted by the LED lamp beads; the liquid lens is used for amplifying and imaging the graph which is homogenized by the diaphragm plate; the liquid lens control board is used for controlling the voltage applied to the liquid lens so as to change the focal length of the liquid lens, and the liquid lens is used for realizing the amplifying effect, so that the position and the angle of an observer can be changed to display a dynamic clear pattern effect, and the optical module is simple in structure, small in volume and capable of being spliced, and can meet various modeling and design requirements;
2. the application discloses a control system and a control method of a car light optical module, wherein the control system comprises a radar, the car light optical module and a control unit, wherein the radar is fixedly arranged outside a car, is used for detecting the distance and the angle between an observer and the car, and is sent to the control unit; the control unit is used for calculating the distance of the liquid lens which is actually required to be imaged according to the distance and angle data sent by the radar, sending a control command for adjusting the focal length to the optical module according to the calculated actual imaging distance, controlling the voltage of the liquid lens in the optical module through the liquid lens control board, changing the shape of the liquid lens when the voltage is applied, changing the focal length, enabling an observer to see clear dynamic images at any angle and distance, and the control system and the control method are simple and easy to realize;
3. in the application, the patterns on the diaphragm plates can be customized according to modeling requirements, so that personalized requirements are met;
4. in the application, the outer cover is made of an ABS black opaque material, so that the influence of stray light between modules can be eliminated;
5. in this application, adopt a set of liquid lens array to image, whole module thickness is about 2cm, and single imaging unit size is no longer than 10mm, can regard as the imaging unit of platformization, is applied to in multiple molding, and according to the structure of car light self, the scene is changeable, and the suitability is strong.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings that are used in the description of the embodiments will be briefly described.
Fig. 1 is a schematic diagram of an internal structure of a lamp optical module according to the present invention;
fig. 2 is a schematic diagram of the overall structure of an optical module for a vehicle lamp according to the present invention;
FIG. 3 is a schematic diagram illustrating an overall control system for an optical module of a vehicle lamp according to the present invention;
fig. 4 is a flowchart illustrating steps of a method for controlling an optical module of a vehicle lamp according to the present invention.
Wherein, 1-PCB board, 2-LED lamp pearl, 3-diaphragm board, 4-liquid lens, 5-liquid lens control panel, 6-shell.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
1-2, the vehicle lamp optical module comprises a PCB (printed Circuit Board) 1, LED (light emitting diode) lamp beads 2, a diaphragm plate 3, a liquid lens 4 and a liquid lens control board 5, wherein the PCB 1 is a light source board for providing current and control commands for the LED lamp beads 2, and the PCB 1 can be a flexible substrate or a non-flexible substrate; the LED lamp beads 2 are arranged on the PCB 1 in an array mode, the PCB 1 can be designed into a whole or spliced plate according to the arrangement mode of the LED lamp beads 2 and the modeling of the car lamp, and the minimum arrangement distance D of the LED lamp beads 2 on the PCB 1 meets the following formula:
Figure BDA0004060748980000051
in the method, in the process of the invention,
a is a design index of uniformity, d is a minimum arrangement interval of LED lamp beads when the diaphragm plate is made of transparent material, I 0 For the central light intensity of the LED lamp beads, h is the distance from the LED lamp beads to the diaphragm plate, m is the lambertian coefficient of the pearlescent intensity distribution of the LED lamp, and the light intensity distribution of the LED lamp beads 2 can be lambertian or lambertian.
As an embodiment of the present invention, the diaphragm plate 3 is used for homogenizing the light emitted by the plurality of LED beads 2, specifically, the diaphragm plate 3 is made of a transparent material, or may be a transparent material or a milky transparent material, and the material may be PC, acryl, or the like; black paint is sprayed on one surface of the diaphragm plate 3 close to the liquid lens 4, patterns are engraved on the surface of the diaphragm plate 3, the patterns can be customized according to modeling requirements, the positions of the engraved patterns correspond to the center of the liquid lens 4, light emitted by the LED lamp beads 2 is transmitted to the diaphragm plate 3, after being homogenized through the diaphragm plate 3, part of the light is intercepted and absorbed by the black paint on the diaphragm plate 3, part of the light penetrates through the patterns on the diaphragm plate 3 to form a luminous pattern, and the patterns on the diaphragm plate 3 can realize pattern effects with different depths by adjusting the power of the LED lamp beads 2; the liquid lens 4 is used for magnifying and imaging the graph which is homogenized by the diaphragm plate 3; the liquid lens control board 5 is used for controlling the voltage applied to the liquid lens 4 to change the focal length, in particular, the liquid lens 4 can control the voltage through the liquid lens control board 5, when the voltage is applied, the liquid lens 4 changes shape, thereby changing the focal length, after the voltage is removed, the liquid lens 4 is restored to the original shape, the liquid lens control board 5 increases the applied voltage from 0V to 100V, the focal length is increased from 7.5mm to 13.1mm, and the resolution of the lens can reach 29 lines per millimeter.
As a preferred embodiment of the present invention, the optical module for a vehicle lamp further includes a housing 6, wherein the housing 6 is covered outside the PCB board 1, the LED lamp beads 2, the diaphragm board 3, the liquid lens 4 and the liquid lens control board 5, and preferably, the housing 6 is made of ABS black opaque material, so as to eliminate the influence of stray light between modules.
The working process of the optical module of the car lamp disclosed by the invention is as follows:
the PCB board 1 provides electric current for the LED lamp pearl 2, and the light output that LED lamp pearl 2 sent is to diaphragm board 3, after through diaphragm board 3 even light, and partial light is intercepted by the black paint on the diaphragm board 3 and absorbed, and partial light is through radium carving pattern on the diaphragm board 3 and is passed through, forms a luminous figure, as the object plane of liquid lens 5, through liquid lens 5 enlarged formation of image to accessible liquid lens control panel 5 control liquid lens voltage, thereby change the focus of liquid lens 4.
The optical module of the car lamp disclosed by the invention has the advantages of simple structure, small volume and splice, and can meet various modeling and design requirements; the liquid lens achieves a magnifying effect and can still present a dynamically clear pattern by changing the position and angle of the observer.
Another aspect of the present invention discloses a vehicle lamp optical module control system, referring to fig. 3, the control system includes the vehicle lamp optical module, the radar and the control unit as described above, wherein the radar is fixedly installed outside the vehicle to detect a distance and an angle between an observer and the vehicle, and transmits the detected distance and angle to the control unit; the control unit is used for calculating the distance of the liquid lens which is actually required to be imaged according to the distance and angle data sent by the radar, and sending a control command for adjusting the focal length to the optical module according to the calculated actual imaging distance.
In still another aspect, the present invention discloses a control method of an optical module control system, referring to fig. 4, specifically including the following steps:
s1: the radar detects the distance and the angle between the observer and the vehicle in real time and sends the distance and the angle to the control unit;
s2: the control unit receives the distance and the angle between the observer and the vehicle, which are sent by the radar, calculates the actual imaging distance, and sends a control command for adjusting the focal length to the optical module according to the calculated actual imaging distance;
s3: the liquid lens control board in the optical module receives the control command and adjusts the voltage of the liquid lens, so that the focal length of the liquid lens is changed.
The control system and the control method of the car light optical module disclosed by the invention can adjust the focal length of the liquid lens in real time according to the real-time distance and the angle between the observer and the car, so that the observer can see clear dynamic images when the position of the observer is changed, and the control system has a simple structure, and the control method is simple and convenient and is easy to realize.
The optical module of the car lamp disclosed by the invention forms an image through the liquid lens array, has small size, can be spliced, and can be used as a platform unit for various shapes and small spaces; the pattern can be customized, the diaphragm plate can be replaced, and the diaphragm plate can be used as a standard component; the control system and the control method of the car light optical module disclosed by the invention can detect the distance and the angle between an observer and a car in real time, and control and change the focal length of the liquid lens in real time according to the detected distance and the detected angle, so that a clear dynamic image can still be observed when the position of the observer is changed.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.

Claims (10)

1. A vehicle lamp optical module, comprising:
the LED lamp comprises a PCB (1), wherein the PCB (1) is a light source board and is used for providing current and control commands for the LED lamp beads (2);
the LED lamp beads (2) are arranged on the PCB (1) in an array mode;
the diaphragm plate (3) is used for homogenizing the light emitted by the LED lamp beads (2);
a liquid lens (4) for magnifying and imaging the pattern homogenized by the diaphragm plate (3);
a liquid lens control board (5) for controlling the voltage applied to the liquid lens (4) to change the focal length thereof.
2. The vehicle lamp optical module according to claim 1, further comprising a housing (6) covering the outside of the PCB board (1), the LED lamp beads (2), the diaphragm plate (3), the liquid lens (4) and the liquid lens control board (5).
3. A vehicle lamp optical module according to claim 1, characterized in that the diaphragm plate (3) is made of a light-transmitting material, black paint is sprayed on the surface of the diaphragm plate (3) close to the liquid lens (4), a pattern is engraved on the surface sprayed with the black paint, and the position of the engraved pattern corresponds to the center of the liquid lens (4).
4. A vehicle lamp optical module according to claim 1, characterized in that the minimum distance D between the LED lamp beads (2) when arranged on the PCB board (1) satisfies the following formula:
Figure FDA0004060748970000011
wherein A is a design index of uniformity, d is a minimum arrangement interval of LED lamp beads when the diaphragm plate is made of transparent material, I 0 And h is the distance from the LED lamp beads to the diaphragm plate, and m is the lambertian coefficient of the pearlescent intensity distribution of the LED lamps.
5. A lamp optical module according to claim 1, characterized in that the diaphragm plate (3) is a transparent light-transmitting material or a milky light-transmitting material.
6. A vehicle lamp optical module according to claim 2, characterized in that the housing (6) is of ABS black opaque material.
7. A vehicle lamp optical module according to claim 1, characterized in that the PCB board (1) is a monolithic board or splice board.
8. A vehicle lamp optical module according to claim 1, characterized in that the PCB board (1) is a flexible substrate or a non-flexible substrate.
9. An optical module control system comprising a lamp optical module according to any one of claims 1-8;
the radar is fixedly arranged outside the vehicle, is used for detecting the distance and the angle between an observer and the vehicle, and is sent to the control unit;
and the control unit is used for calculating the distance of the liquid lens which is actually required to be imaged according to the distance and angle data sent by the radar, and sending a control command for adjusting the focal length to the optical module according to the calculated actual imaging distance.
10. The control method of an optical module control system according to claim 9, comprising the steps of:
the radar detects the distance and the angle between the observer and the vehicle in real time and sends the distance and the angle to the control unit;
the control unit receives the distance and the angle between the observer and the vehicle, which are sent by the radar, calculates the actual imaging distance, and sends a control command for adjusting the focal length to the optical module according to the calculated actual imaging distance;
the liquid lens control board in the optical module receives the control command and adjusts the voltage of the liquid lens, so that the focal length of the liquid lens is changed.
CN202310057544.0A 2023-01-18 2023-01-18 Car light optical module, optical module control system and control method Pending CN116123478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310057544.0A CN116123478A (en) 2023-01-18 2023-01-18 Car light optical module, optical module control system and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310057544.0A CN116123478A (en) 2023-01-18 2023-01-18 Car light optical module, optical module control system and control method

Publications (1)

Publication Number Publication Date
CN116123478A true CN116123478A (en) 2023-05-16

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Application Number Title Priority Date Filing Date
CN202310057544.0A Pending CN116123478A (en) 2023-01-18 2023-01-18 Car light optical module, optical module control system and control method

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