CN111692569A - Micro-lens array light type switching system and method, welcome lamp and vehicle - Google Patents

Micro-lens array light type switching system and method, welcome lamp and vehicle Download PDF

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Publication number
CN111692569A
CN111692569A CN202010640364.1A CN202010640364A CN111692569A CN 111692569 A CN111692569 A CN 111692569A CN 202010640364 A CN202010640364 A CN 202010640364A CN 111692569 A CN111692569 A CN 111692569A
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China
Prior art keywords
light
vehicle
micro
lens array
distance
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CN202010640364.1A
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Chinese (zh)
Inventor
李云舟
杨珏晶
王良亮
牛磊
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HASCO Vision Technology Co Ltd
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HASCO Vision Technology Co Ltd
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Priority to CN202010640364.1A priority Critical patent/CN111692569A/en
Publication of CN111692569A publication Critical patent/CN111692569A/en
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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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • 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
    • 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
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/40—Exterior vehicle lighting devices for illuminating purposes the light being emitted to facilitate access to the vehicle
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The invention belongs to the field of automobile light, and discloses a micro-lens array light type switching system, a micro-lens array light type switching method, a welcome lamp and a vehicle, wherein the system comprises a single micro-lens array and a light type switching device; the light pattern switching device is suitable for dynamically adjusting the coverage area of the projection light pattern of the micro-lens array according to the change of the distance between the pedestrians and the vehicles, so that the light blanket projected on the ground through the micro-lens array is always positioned between the pedestrians and the vehicles. The light type switching device is used for continuously adjusting the coverage area of the single micro-lens array projection light type, so that the welcome light blanket always moves along with the steps of the vehicle owner, and a smooth animation effect is obtained.

Description

Micro-lens array light type switching system and method, welcome lamp and vehicle
Technical Field
The invention relates to a micro-lens array light type switching system and method, a welcome lamp and a vehicle, and belongs to the field of automobile light.
Background
Due to the small size and long focal depth of the Micro Lens Array (MLA), images can be clearly displayed on various display surfaces, and the Micro Lens Array (MLA) is applied to automobile lighting systems in batches. For example, the vehicle information may be displayed on the ground via MLA projection techniques. Taking a welcome lamp as an example, nowadays, high-end cars generally have the welcome lamp function and are installed below a car door or below a rearview mirror. When a driver or a passenger is ready to get on the vehicle, the welcome lamp at the bottom of the vehicle door emits light at the moment of pulling the vehicle door open. When the vehicle is flamed out and pushes the door open, the welcome lamp is instantly lighted to illuminate the ground.
The traditional welcome lamp can improve the grade of the vehicle on one hand, and can illuminate the road surface of the vehicle door area for the rider on the other hand, so that the rider has guest-to-home driving experience and is popular with more and more vehicle owners.
However, the pattern projection by the MLA method can only project a fixed pattern, that is, only a static pattern can be displayed, and a dynamic pattern cannot be displayed. Although partial dynamic effects can be achieved by sequentially turning on or off the MLAs in a certain order through the synergistic effect of the multiple MLAs, the cost is high. Meanwhile, the matching and the connection among multiple MLAs are also the technical problems to be overcome at present, more importantly, smooth and coherent dynamic effects cannot be realized through multi-pattern splicing, and the visual display still has a pause feeling, so that the user experience is influenced.
Disclosure of Invention
The invention aims to provide a micro-lens array light type switching system and method, a welcome lamp and a vehicle.
In order to achieve the above object, a first aspect of the present invention provides a microlens array light pattern switching system, including a single microlens array and a light pattern switching device; the light pattern switching device is suitable for dynamically adjusting the coverage area of the projection light pattern of the micro-lens array according to the change of the distance between the pedestrians and the vehicles, so that the light blanket projected on the ground through the micro-lens array is always positioned between the pedestrians and the vehicles.
Further, the length of the light blanket is adapted to be continuously variable.
Further, each row of the micro lens array is in a light emitting state, the light type switching device is suitable for adjusting the opening and closing degree of projection light of the micro lens array in a two-way mode through the two-way rotation of the light shielding part relative to the micro lens array, and the light shielding part is suitable for moving in the up-and-down two-way mode along the column direction of the micro lens array.
Further, the light type switching device comprises a human-vehicle distance detection module, a vehicle-mounted controller, a switching controller, a driving module and a shading part; the human-vehicle distance detection module is suitable for detecting the distance between human vehicles in real time and transmitting the distance to the vehicle-mounted controller; the vehicle-mounted controller is suitable for storing the distance between two adjacent detected people and vehicles, determining steering according to the comparison result of the distance between the two detected people and vehicles, and transmitting the steering information to the switching controller; the switching controller is pre-stored with a corresponding relation table of the distance between the passenger car and the rotating angle of the shading part, obtains the corresponding rotating angle of the shading part from the corresponding relation table, and transmits the steering angle and the rotating angle to the driving module, so that the driving module drives the shading part to rotate according to the steering angle and the rotating angle, and the driving module is suitable for feeding back the rotating angle value of the shading part to the switching controller in real time.
Further, the light type switching device further comprises an identity recognition module, wherein the identity recognition module is pre-stored with vehicle owner identity information, and is suitable for detecting face information of personnel approaching the vehicle and comparing the face information with the vehicle owner identity information to judge whether the personnel is a vehicle owner, and if the personnel is the vehicle owner, the light type switching device sends an enabling signal to the switching controller to start dynamic adjustment of the projection light type.
Furthermore, projection light of each row of projection units of the micro lens array respectively covers a continuous distance on the ground from far to near, and the projection light is connected end to end and does not overlap with each other.
The second aspect of the present invention provides a method for switching a light pattern of a microlens array, comprising the steps of: (1) acquiring the distance L between a person and a vehicle in real time; (2) the coverage area of the projected light pattern of the microlens array is dynamically adjusted according to the change of the distance L between the pedestrians and the vehicles, so that the light blanket projected on the ground through the microlens array is always positioned between the pedestrians and the vehicles.
Further, the length of the light blanket is adapted to be continuously variable.
Further, in the step (1), the face information of the person approaching the vehicle is detected and compared with the pre-stored identity information of the vehicle owner to judge whether the person is the vehicle owner, and if the person is the vehicle owner, the step (2) is continuously executed.
Further, the initial value of the human-vehicle distance L for starting projection by the micro-lens array is 4m, and the initial length of the corresponding optical blanket is 3 m; when the human-vehicle distance L is reduced to 3m, the dynamic adjustment of the projection light type is started, the length of the light blanket is shortened along with the further reduction of the human-vehicle distance L, and the light blanket is always away from the human feet by a certain distance.
Furthermore, each row of the micro lens array emits light, and from top to bottom, the projection light of each row respectively covers a continuous distance on the ground from far to near, and is connected end to end and does not overlap with each other; the dynamic adjustment process of the projection light shape comprises the following steps: the light shielding part is arranged at the top of the micro lens array and is suitable for rotating around the micro lens array along the row direction of the micro lens array, so that the light emitting area projected to the ground can be continuously changed on the micro lens array without shielding.
A third aspect of the present invention provides a welcome lamp, including the microlens array light type switching system according to any one of the first aspects, and adapted to perform the microlens array light type switching method according to any one of the second aspects by using the microlens array light type switching system
A fourth aspect of the present invention provides a vehicle including the usher light according to any one of the third aspects.
According to the technical scheme, the light type switching device is only used for continuously adjusting the coverage area of the projection light type of the single micro-lens array, so that the welcome optical blanket always moves along with the steps of the vehicle owner, and a smooth animation effect can be obtained.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a control schematic block diagram of an embodiment of a system of the present invention;
FIG. 2 is a flow chart of control software for an embodiment of the method of the present invention;
FIG. 3 is a schematic diagram illustrating the principle of light blanket projection in one embodiment of the system/method of the present invention;
FIG. 4 is a schematic diagram illustrating switching principles of the projected light pattern according to an embodiment of the system/method of the present invention;
fig. 5 is a diagram illustrating the effect of dynamic changes in the coverage area of the optical blanket according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
One embodiment of the present microlens array light pattern switching system includes a single microlens array and a light pattern switching device; the light pattern switching device is suitable for dynamically adjusting the coverage area of the projection light pattern of the micro-lens array according to the change of the distance between the pedestrians and the vehicles, so that the light blanket projected on the ground through the micro-lens array is always positioned between the pedestrians and the vehicles.
In one embodiment of the present microlens array light pattern switching system, the length of the light blanket is adapted to be continuously variable.
In one embodiment of the light type switching system of the microlens array, each row of the microlens array is in a light emitting state, the light type switching device is suitable for adjusting the opening and closing degree of projection light to the microlens array in a two-way mode through the two-way rotation of the light shielding part relative to the microlens array, and the light shielding part is suitable for moving in the up-and-down two-way mode along the column direction of the microlens array.
As shown in fig. 1, in one embodiment of the microlens array light type switching system of the present invention, the light type switching device includes a human-vehicle distance detection module, a vehicle-mounted controller, a switching controller, a driving module, and a light shielding component; the human-vehicle distance detection module is suitable for detecting the distance between human vehicles in real time and transmitting the distance to the vehicle-mounted controller; the vehicle-mounted controller is suitable for storing the distance between two adjacent detected people and vehicles, determining steering according to the comparison result of the distance between the two detected people and vehicles, and transmitting the steering information to the switching controller; the switching controller is pre-stored with a corresponding relation table of the distance between the passenger car and the rotating angle of the shading part, obtains the corresponding rotating angle of the shading part from the corresponding relation table, and transmits the steering angle and the rotating angle to the driving module, so that the driving module drives the shading part to rotate according to the steering angle and the rotating angle, and the driving module is suitable for feeding back the rotating angle value of the shading part to the switching controller in real time. Specifically, the driving module can select a stepping motor, and can monitor the rotation angle data of the stepping motor in real time by mounting a hall sensor on the stepping motor, wherein the rotation angle data is a numerical value relative to a reference zero position, the reference zero position is a preset absolute value, and the torque of the stepping motor automatically returns to zero when the stepping motor is electrified and works each time.
For example, the detection values of two adjacent detection values of the human-vehicle distance detection module are 1.5m and 1.8m respectively according to the sequence of the detection time, so that the human-vehicle distance detection module can judge that the rotation direction of the stepping motor serving as the driving module is positive rotation according to the judgment that the human moves in the direction far away from the vehicle, and the positive rotation corresponds to the upward movement of the shading part, so that the projected light blanket is elongated. On the contrary, if the detection values of the human-vehicle distance detection module and the vehicle-vehicle distance detection module are respectively 1.8m and 1.5m according to the sequence of the detection time, it can be judged that the human moves in the direction approaching the vehicle, and accordingly, the rotation direction of the stepping motor serving as the driving module is determined to be reverse, and the reverse corresponds to the downward movement of the shading part, so that the projected light blanket is shortened. As for the rotation angle of the stepping motor, the rotation angle can be determined by a pre-stored corresponding relation table of the distance between the person and the vehicle and the rotation angle of the shading part. This angle of rotation is also data relative to the reference null. If the corresponding rotation angle of the distance between the man and the vehicle and the distance between the man and the vehicle is 20 degrees, the stepping motor rotates 20 degrees.
In an embodiment of the microlens array light type switching system of the present invention, the light type switching device further includes an identity recognition module, the identity recognition module pre-stores owner identity information, and is adapted to determine whether a person approaching a vehicle is an owner by detecting face information of the person and comparing the face information with the owner identity information, and if the person is the owner, an enable signal is sent to the switching controller to start dynamic adjustment of the projection light type.
In an embodiment of the switching system of the invention, the projected lights of each row of projection units of the microlens array cover a continuous distance on the ground from far to near, and are connected end to end and do not overlap each other. For example, as shown in fig. 3, the actual microlens array 1 is enclosed in a small circle, and a large circle is a partially enlarged view thereof. As can be seen from fig. 3, in this example, the microlens array 1 has five rows of projection units, and from top to bottom, the rows a, B, C, D, and E can project five continuous segments of the light blanket pattern 2 in the ranges of 3m-2.5m, 2.5m-2m, 2m-1.5m, 1.5m-1m, and 1m-0.5m with respect to the vehicle body distance, respectively.
In an embodiment of the microlens array light type switching system, the microlens array light type switching system is installed below a vehicle door, whether a person approaches the system is judged through capture information of the camera, when the person approaches the system, when the distance between the person and the vehicle is shortened to 10m, the camera captures face information, whether the person is a vehicle owner is judged through comparison with the database, and if yes, the welcome system is started. According to the judgment of the camera on the position of the person, when the distance between the person and the vehicle is about 4m, the projection system based on the micro-lens array light type switching system is started to project a trapezoidal area with the width of 1.5m and the length of 3m, and the trapezoidal area is used for forming a guest greeting optical blanket. According to the judgment of the camera on the human-vehicle distance, the micro-lens array light type switching system is started, the area proportion of light which can be emitted by the projection unit is dynamically adjusted according to the human-vehicle distance, so that the welcome optical blanket is gradually shortened, the length of the optical blanket is kept to be about 0.1m away from the human foot, and the optical blanket always follows the steps of people, as shown in fig. 5.
The embodiment of the light type switching method of the micro-lens array comprises the following steps: (1) acquiring the distance L between a person and a vehicle in real time; (2) the coverage area of the projected light pattern of the microlens array is dynamically adjusted according to the change of the distance L between the pedestrians and the vehicles, so that the light blanket projected on the ground through the microlens array is always positioned between the pedestrians and the vehicles.
In one embodiment of the microlens array light pattern switching method of the present invention, the length of the light blanket is adapted to be continuously varied.
In an embodiment of the method for switching the light pattern of the microlens array of the present invention, in the step (1), the face information of the person approaching the vehicle is detected and compared with the pre-stored identity information of the vehicle owner to determine whether the person is the vehicle owner, and if the person is the vehicle owner, the step (2) is continuously performed.
Specifically, as shown in fig. 2, one embodiment of the microlens array light pattern switching method of the present invention includes the following steps: s101, judging whether the camera detects a person or not, if so, continuing to step S102, and if not, repeating the step; s102, processing a portrait obtained through a camera, and extracting face information from the portrait; s103, judging whether the face information corresponds to the car owner or not, specifically judging through a mode of comparing the face information with a prestored car owner face information database, if the face information is the car owner, continuing to the step S104, and if the face information is not the car owner, returning to the step S101, namely, the following light type switching function is not executed, wherein the function is customized for the car owner; s104, obtaining the current human-vehicle distance and the current angle of the driving module, determining the steering and the corner of the driving module according to the steering and the corner, driving the shading part to rotate by the driving module according to the steering and the corner, when the driving module adopts a stepping motor, the current angle refers to the angular position of a rotating shaft of the stepping motor, the human-vehicle distance needs two adjacent detection values, determining the steering of the stepping motor according to the two detection values, and determining the corner of the stepping motor according to a corresponding relation table of the pre-stored human-vehicle distance and the rotating angle of the shading part; s105, judging whether the man-vehicle distance reaches a preset upper limit value or a preset lower limit value, if so, ending the execution process, returning to the starting step S101 for circulation, otherwise, returning to the step S104, carrying out follow-up adjustment on the position of the shading part according to the constantly changing man-vehicle distance until the man-vehicle distance reaches the preset upper limit value or the preset lower limit value, wherein the lower limit value corresponds to the distance between a person and a vehicle, and if the distance is lower than the preset upper limit value or the preset lower limit value, ending the step S105 and returning to the starting step S101; the upper limit value corresponds to the distance of the person furthest from the vehicle, beyond which the step S105 is ended and the start step S101 is returned to.
In an embodiment of the light type switching method for the microlens array, an initial value of a human-vehicle distance L for starting projection of the microlens array is 4m, and an initial length of the corresponding optical blanket is 3 m; when the human-vehicle distance L is reduced to 3m, the dynamic adjustment of the projection light type is started, the length of the light blanket is shortened along with the further reduction of the human-vehicle distance L, and the light blanket is always away from the human feet by a certain distance.
In one embodiment of the light type switching method of the microlens array, each row of the microlens array emits light, and from top to bottom, the projected light of each row respectively covers a continuous distance on the ground from far to near, and is connected end to end and does not overlap with each other; the dynamic adjustment process of the projection light shape comprises the following steps: the light shielding part is arranged at the top of the micro lens array and is suitable for rotating around the micro lens array along the row direction of the micro lens array, so that the light emitting area projected to the ground can be continuously changed on the micro lens array without shielding.
The man-vehicle distance detection module can be completed by an ultrasonic radar, the detection mode can be accurate to centimeter level, just like the corresponding relation table you say, the man-vehicle distance detection module can also be refined to centimeter level and millisecond level, namely, a man-vehicle distance value corresponds to a rotation angle. The driving module can be completed by a stepping motor, the stepping value of the stepping motor corresponds to the rotation angle one by one, for example, the distance between a human and a vehicle is 3 meters, the step is 100 steps, the distance between the human and the vehicle is 2.5 meters, and then the step is 90 steps. Therefore, whether the distance is close or far, the absolute value of the human-vehicle distance is judged, namely, the shielding degree of the light shielding part is independent relative to the human-vehicle distance every time the distance changes, and even the distance jumps, the corresponding jump of the rotation angle is only carried out. As for the rotation speed, it is necessary to keep up with the moving speed of the person, for example, the rotation speed can be 180 degrees in 0.5 second, depending on the parameters of the stepping motor.
In the embodiments of the greeting lamp of the present invention, any embodiment of the light type switching system of the microlens array of the present invention may be included, and any embodiment of the light type switching method of the microlens array of the present invention may be executed.
In the embodiment of the vehicle of the present invention, any embodiment of the greeting lamp of the present invention may be included, and the technical effects or advantages of any embodiment described above are provided, which are not described herein again.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.

Claims (13)

1. A microlens array light type switching system is characterized by comprising a single microlens array and a light type switching device; the light pattern switching device is suitable for dynamically adjusting the coverage area of the projection light pattern of the micro-lens array according to the change of the distance between the pedestrians and the vehicles, so that the light blanket projected on the ground through the micro-lens array is always positioned between the pedestrians and the vehicles.
2. The microlens array light pattern switching system of claim 1, wherein the length of the light blanket is adapted to be continuously variable.
3. The micro-lens array light pattern switching system according to claim 1, wherein each row of the micro-lens array is in a light emitting state during the dynamic adjustment, the light pattern switching device is adapted to adjust the degree of opening and closing of the projection light to the micro-lens array in two directions through the two-way rotation of the light shielding part relative to the micro-lens array, and the light shielding part is adapted to move up and down in two directions along the column direction of the micro-lens array.
4. The micro-lens array light pattern switching system according to claim 1, wherein the light pattern switching device comprises a human-vehicle distance detection module, a vehicle-mounted controller, a switching controller, a driving module and a shading part; the human-vehicle distance detection module is suitable for detecting the distance between human vehicles in real time and transmitting the distance to the vehicle-mounted controller; the vehicle-mounted controller is suitable for storing the distance between two adjacent detected people and vehicles, determining steering according to the comparison result of the distance between the two detected people and vehicles, and transmitting the steering information to the switching controller; the switching controller is pre-stored with a corresponding relation table of the distance between the passenger car and the rotating angle of the shading part, obtains the corresponding rotating angle of the shading part from the corresponding relation table, and transmits the steering angle and the rotating angle to the driving module, so that the driving module drives the shading part to rotate according to the steering angle and the rotating angle, and the driving module is suitable for feeding back the rotating angle value of the shading part to the switching controller in real time.
5. The micro-lens array light pattern switching system according to claim 4, wherein the light pattern switching device further comprises an identification module, the identification module is pre-stored with car owner identification information and is adapted to determine whether a person approaching the vehicle is a car owner by detecting face information of the person and comparing the face information with the car owner identification information, and if the person is a car owner, an enable signal is sent to the switching controller to start the dynamic adjustment of the projected light pattern.
6. The light pattern switching system of claim 4 or 5, wherein the projected light of each row of projection units of the micro lens array covers a continuous distance from far to near on the ground, and the projected light is end to end and does not overlap each other.
7. A microlens array light type switching method is characterized by comprising the following steps:
(1) acquiring the distance L between a person and a vehicle in real time;
(2) the coverage area of the projected light pattern of the microlens array is dynamically adjusted according to the change of the distance L between the pedestrians and the vehicles, so that the light blanket projected on the ground through the microlens array is always positioned between the pedestrians and the vehicles.
8. The microlens array light pattern switching method according to claim 7, wherein the length of the light blanket is adapted to be continuously varied.
9. The method according to claim 7 or 8, wherein in the step (1), the face information of the person approaching the vehicle is detected and compared with the pre-stored owner identity information to determine whether the person is the owner of the vehicle, and if the person is the owner of the vehicle, the step (2) is executed.
10. The light pattern switching method of the micro-lens array according to claim 9, wherein the initial value of the distance L between the person and the vehicle for starting the projection of the micro-lens array is 4m, and the initial length of the corresponding light blanket is 3 m; when the human-vehicle distance L is reduced to 3m, the dynamic adjustment of the projection light type is started, the length of the light blanket is shortened along with the further reduction of the human-vehicle distance L, and the light blanket is always away from the human feet by a certain distance.
11. The method of claim 10, wherein each row of projection units of the microlens array emits light, and from top to bottom, the projection light of each row of projection units respectively covers a continuous distance from far to near on the ground, and the projection light is connected end to end and does not overlap each other;
the dynamic adjustment process of the projection light shape comprises the following steps: the light shielding part is arranged at the top of the micro lens array and is suitable for rotating around the micro lens array along the row direction of the micro lens array, so that the light emitting area projected to the ground can be continuously changed on the micro lens array without shielding.
12. A welcome lamp comprising the microlens array light pattern switching system as claimed in any one of claims 1 to 6, and adapted to perform the microlens array light pattern switching method as claimed in any one of claims 7 to 11 by the microlens array light pattern switching system.
13. A vehicle comprising the courtesy light of claim 12.
CN202010640364.1A 2020-07-06 2020-07-06 Micro-lens array light type switching system and method, welcome lamp and vehicle Pending CN111692569A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113473681A (en) * 2021-07-30 2021-10-01 重庆长安新能源汽车科技有限公司 Welcome control system and method and automobile
CN115681871A (en) * 2021-08-16 2023-02-03 华为技术有限公司 Car light module, lighting system and vehicle
WO2023012047A1 (en) * 2021-08-06 2023-02-09 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle having a projection unit, and method for operating a motor vehicle
WO2023109312A1 (en) * 2021-12-17 2023-06-22 一汽奔腾轿车有限公司 Vehicle welcome light system based on micro-lens array, and control method therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113473681A (en) * 2021-07-30 2021-10-01 重庆长安新能源汽车科技有限公司 Welcome control system and method and automobile
WO2023012047A1 (en) * 2021-08-06 2023-02-09 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle having a projection unit, and method for operating a motor vehicle
CN115681871A (en) * 2021-08-16 2023-02-03 华为技术有限公司 Car light module, lighting system and vehicle
WO2023020115A1 (en) * 2021-08-16 2023-02-23 华为技术有限公司 Vehicle lamp module, light system, and vehicle
CN115681871B (en) * 2021-08-16 2024-02-13 华为技术有限公司 Car light module, lighting system and vehicle
WO2023109312A1 (en) * 2021-12-17 2023-06-22 一汽奔腾轿车有限公司 Vehicle welcome light system based on micro-lens array, and control method therefor

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