CN112584567B - Multi-chip lighting system and control method thereof - Google Patents
Multi-chip lighting system and control method thereof Download PDFInfo
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- CN112584567B CN112584567B CN201910944190.5A CN201910944190A CN112584567B CN 112584567 B CN112584567 B CN 112584567B CN 201910944190 A CN201910944190 A CN 201910944190A CN 112584567 B CN112584567 B CN 112584567B
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- 238000000034 method Methods 0.000 title claims description 32
- 230000003287 optical effect Effects 0.000 claims abstract description 96
- 238000005286 illumination Methods 0.000 claims abstract description 37
- 230000002452 interceptive effect Effects 0.000 claims description 23
- 238000003306 harvesting Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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- 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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- 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
Abstract
The present invention provides a multi-chip illumination system comprising: at least two controllable light source chips; at least two optical lens groups; and a projection lens, wherein the controllable light source chips are arranged in a one-to-one correspondence with the optical lens groups, wherein the projection lens is arranged at the image side of a plurality of the optical lens groups, wherein the controllable light source chips are controllable by individual pixels, wherein the light emitted by each controllable light source chip is shaped corresponding to the respective optical lens group and passes through the projection lens to finally be displayed in a light-emitting area, and a plurality of controllable light source chips are integrated to be capable of displaying a complete light-emitting area.
Description
Technical Field
The present invention relates to electronic lighting devices, and more particularly, to a multi-chip lighting system and control method for use in vehicles.
Background
Unlike general lighting devices, vehicle-mounted lighting headlamps have been designed in an intelligent direction due to technological advances and developments. For example, the more popular ADB (Adaptive Driving Beam, adaptive driving light) technology, etc. has become increasingly popular.
Some existing illumination systems mainly use LED chips or DMD chips as illumination or image light sources. As an integrated illumination system, in addition to the normally required high-low light illumination, a projected image is required so that a driver can obtain a variety of information. The illumination system adopting the ADB technology can automatically adjust the intensity, the distance direction and the like of illumination according to different ambient light rays and even whether the opposite party is in a car, so that the driving safety is greatly improved.
More specifically, the LED chip may select a controllable high-pixel chip, that is, a light emitting chip in which each pixel may be individually controlled to operate. Because of the limitation of the manufacturing process and the control scheme of the chip, the current chip is a square light-emitting surface. For example, one existing EVIYOS type chip is 1024 pixels, i.e., 32×32 matrix arrangement of pixels. With a similar controllable light source chip, the intensity of illumination and the presentation of the image can be directly controlled for output.
Although controllable light source chips offer a completely new option for on-board DLP illumination, there are a number of problems associated with the specific use of such light source chips in an overall system. One of the most straightforward problems is that the controllable light source chip is square. However, the projection image or illumination area actually required is rectangular, which causes great trouble in the arrangement of the optical lens group. If only part of pixels are used and part of pixels are abandoned, a large waste of chip resources is caused, and the high performance of the chip cannot be fully exerted. As shown in fig. 1A and 1B, when two controllable light source chips are attempted to be spliced into a whole chip to solve the problem, the optical lens group enlarges the physical gap spliced by the two chips, and finally, obvious and serious gaps exist between the light spots, so that the requirements of practical use cannot be met. Besides, the two chips have gaps at the splicing positions, and a certain non-light-emitting area is also arranged between the light-emitting surfaces. That is, there is a very large dark area between the two sets of controllable pixels. For such non-light emitting areas, there is no complete solution by means of an optical lens design. Devices that can only project or illuminate as squares are of little application, so that controllable light source chips cannot quickly occupy the market.
Disclosure of Invention
One of the main advantages of the present invention is to provide a multi-chip lighting system and a control method thereof, in which a plurality of controllable light source chips are integrated to be capable of assuming a complete rectangular light emitting area.
Another advantage of the present invention is to provide a multi-chip illumination system and a control method thereof that exhibit rectangular light emitting areas with no light spot spacing.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, in which the configuration of a plurality of controllable light source chips has integrity, providing a hardware basis for integrated control, while reducing manufacturing costs.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, in which the overall lighting has a rectangular shape without space, reducing manufacturing difficulty, and facilitating market popularization under the condition that the installation accuracy requirements of a plurality of the controllable light source chips are not high.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, in which a plurality of controllable light source chips can fully utilize pixels each having a square arrangement, fully use all available resources, and not waste high performance of each of the controllable light source chips.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, in which each pixel of a plurality of the controllable light source chips emits light according to external environment information, providing a driver with an adaptively rectangular light emitting area, and providing information more fully in a driving field of view.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, wherein the light emitted by each of the controllable light source chips is sufficiently optically shaped so that the output light is presented without wasting the emitted light.
Another advantage of the present invention is to provide a multi-chip illumination system and a control method thereof, in which the overall resolution performance is not affected, and the imaging quality is ensured.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, in which a plurality of the controllable light source chips can be arranged and designed according to the use requirement, including but not limited to a single rectangle, a plurality of square combinations, so that the length of the light emitting area can be designed according to the use requirement, and the system is suitable for the market requirement.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, wherein the entire lighting system is adapted to be directly mounted to a vehicle lamp, a relatively wide light emitting area is obtained by one mounting, and steps of multiple mounting and subsequent calibration are reduced.
Another advantage of the present invention is to provide a multi-chip illumination system and a control method thereof, in which a plurality of the controllable light source chips are integrally controlled and integrally output light, thereby providing high imaging uniformity, avoiding matching and synergy problems caused by separate control.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, wherein light outputted by a plurality of the controllable light source chips is finally emitted through the same lens, so as to ensure imaging without a speckle gap.
Another advantage of the present invention is to provide a multi-chip lighting system and a control method thereof, in which a plurality of the controllable light source chips are fully utilized and adapted to ADB technology, and to market demands and popularization.
Other advantages and features of the present invention will become more fully apparent from the following detailed description, and may be learned by the practice of the invention as set forth hereinafter.
In accordance with one aspect of the present invention, a multi-chip lighting control method of the present invention, which can achieve the foregoing and other objects and advantages, comprises the steps of:
A. collecting external environment information;
B. obtaining the number of a plurality of controllable light source chips and the number of pixels according to the requirement of a light emitting area of target output;
C. outputting and controlling the pixels corresponding to the controllable light source chips to emit light; and
D. and (3) circularly returning to the step A until a shutdown instruction is received.
According to one embodiment of the present invention, the step B further includes the steps of: and obtaining the assembly relation of a plurality of the controllable light source chips.
According to one embodiment of the invention, the controllable light source chip is individually pixel controllable.
According to one embodiment of the present invention, each of the controllable light source chips is controlled to emit light to form a corresponding light path, wherein the light paths corresponding to the controllable light source chips intersect each other.
According to one embodiment of the present invention, the step B further includes the steps of: and obtaining the intersection degree of the light paths corresponding to the controllable light source chips.
According to one embodiment of the invention, a plurality of the controllable light source chips are assembled at an angle.
According to one embodiment of the invention, a plurality of the controllable light source chips are assembled in parallel with a space between the plurality of controllable light source chips.
In accordance with another aspect of the present invention, there is further provided a multi-chip illumination system comprising:
at least two controllable light source chips;
at least two optical lens groups; and
the controllable light source chips are arranged in a one-to-one correspondence to the optical lens groups, wherein the projection lenses are arranged on the image sides of a plurality of the optical lens groups, the controllable light source chips are controllable by single pixels, and light rays emitted by each controllable light source chip are shaped corresponding to the respective optical lens groups and pass through the projection lenses to finally be displayed in a light-emitting area.
According to an embodiment of the invention, the shape of the light emitting area is selected from at least one of the following combinations: square, rectangle, shape with multiple rectangle parts overlapping.
According to one embodiment of the present invention, each of the controllable light source chips is controlled to emit light to form a corresponding light path, wherein the light paths corresponding to the controllable light source chips intersect each other.
According to one embodiment of the present invention, each of the controllable light source chips is controlled to emit light to form a separate light path, wherein the light path is folded by the projection lens and then emitted to the outside of the light emitting area.
According to one embodiment of the present invention, each of the controllable light source chips is controlled to emit light to form a corresponding light path, wherein the light paths corresponding to the controllable light source chips intersect each other at the projection lens.
According to one embodiment of the invention, the light paths corresponding to the controllable light source chips mutually intersect the image side of the projection lens.
According to one embodiment of the present invention, the optical paths corresponding to the controllable light source chips intersect with each other on the object side of the projection lens.
According to one embodiment of the invention, a plurality of the controllable light source chips are assembled in parallel with a space between the plurality of controllable light source chips.
According to one embodiment of the invention, a plurality of the controllable light source chips are assembled at an angle.
According to one embodiment of the present invention, the number of the controllable light source chips is two, wherein the two controllable light source chips and the corresponding optical lens group are in a substantially Λ -shaped assembly relation.
According to one embodiment of the invention, the multi-chip lighting system further comprises a harvesting device and an interactive terminal, wherein the harvesting device is electrically connected to the interactive terminal by a control input, wherein the controllable light source chip is electrically connected to the interactive terminal by a control output.
According to an embodiment of the present invention, an assembly relation of a plurality of the controllable light source chips is inputted as a predetermined parameter to the interactive terminal.
According to an embodiment of the present invention, when each of the controllable light source chips that have been assembled is tested, an assembly relationship of a plurality of the controllable light source chips is obtained and inputted as a predetermined parameter to the interactive terminal.
Further objects and advantages of the present invention will become fully apparent from the following description and the accompanying drawings.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.
Drawings
Fig. 1A and 1B are schematic diagrams of the application and effect of a controllable light source chip in the prior art.
Fig. 2 is an overall schematic diagram of a multi-chip illumination system and a control method thereof according to a preferred embodiment of the present invention.
Fig. 3 is a flow chart of the multi-chip illumination system and the control method thereof according to the above preferred embodiment of the present invention.
Fig. 4A and 4B are optical schematic diagrams of the multi-chip illumination system and the control method thereof according to the above preferred embodiment of the present invention.
Fig. 5A is a schematic perspective view of a multi-chip illumination system according to the above preferred embodiment of the present invention.
Fig. 5B is a schematic plan view of a multi-chip illumination system according to the above preferred embodiment of the present invention.
Fig. 6 is a schematic plan view of another possible way of a multi-chip illumination system according to the above-described preferred embodiment of the invention.
Fig. 7 is a schematic plan view of another possible way of a multi-chip illumination system according to the above-described preferred embodiment of the invention.
Fig. 8 is a schematic view of a light emitting area of the multi-chip illumination system according to the above preferred embodiment of the present invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
The invention provides a multi-chip lighting system and a control method thereof, which are suitable for being arranged at the front part of an automobile to provide light illumination or image information projection. A preferred embodiment of the present invention is shown in fig. 2-8. The multi-chip illumination system comprises at least two controllable light source chips 10, at least two optical lens sets 20, and a projection lens 30. The controllable light source chips 10 and the optical lens groups 20 are disposed in correspondence with each other such that the controllable light source chips 10 are disposed in one-to-one correspondence with the optical lens groups 20. The projection lens 30 is disposed on the image side of a plurality of the optical lens groups 20. When the controllable light source chips 10 are controlled to emit light, the light emitted by each controllable light source chip 10 is shaped corresponding to the respective optical lens set 20, and passes through the projection lens 30 to finally be displayed in a light emitting area 100.
It should be noted that the light emitting area 100 is a rectangular area, or a combination of a plurality of rectangular areas that are partially overlapped. The multi-chip lighting system is started to provide a strip-shaped lighting range for the front of the automobile.
Further, the multi-chip illumination system further comprises an acquisition device 40 and an interaction terminal 50. The acquisition device 40 is electrically connected to the interactive terminal 50 by a control input. The controllable light source chip 10 is electrically connected to the interactive terminal 50 by a control output. Preferably, the acquisition device 40 is placed outside the car to acquire environmental information. That is, the collecting device 40 collects external environment information, and the environment information is inputted to the interactive terminal 50. After the adaptive analysis, the interactive terminal 50 controls the controllable light source chip 10 to emit light.
It should be noted that the controllable light source chip 10 is a single-pixel controllable light emitting chip. For example, a 32×32 matrix arrangement of 1024 individually controllable LED chips, such as EVIYOS chips. After analysis, the interaction terminal 50 controls each pixel of the controllable light source chip 10. Whether or not each pixel of the controllable light source chip 10 emits light, brightness or color, etc. are respectively controlled by the interactive terminal 50 to be outputted. In other words, the light emission of the controllable light source chip 10 is operated by controlling each pixel of the controllable light source chip 10 according to the external environment information of the collecting device 40.
Moreover, the light emitted by each pixel of each controllable light source chip 10 is projected to the projection lens 30 through the optical lens set 20, so as to represent the light-emitting area 100. Further, each of the optical lens groups 20 individually provides an optical path for one of the controllable light source chips 10. That is, each of the optical lens groups 20 serves exclusively one of the controllable light source chips 10, so that the light emitted from the controllable light source chip 10 is sufficiently emitted and externally imaged.
In addition, the plurality of controllable light source chips 10 do not need to be assembled in a spliced manner. Each of the controllable light source chips 10 is fixed separately to correspond to the respective optical lens group 20. That is, there may be an assembly gap between the plurality of controllable light source chips 10, so that there is also a space between the light emitting surfaces of the controllable light source chips 10. With each of the optical lens group 20 and the projection lens 30, the light spot of the light emitting area 100 is not spaced. Each of the controllable light source chips 10 is assembled corresponding to the optical lens group 20 such that light forms the light path. Moreover, the assembling positions of the controllable light source chips 10 have a certain mutual relationship, such as a certain distance, a certain included angle, etc. The assembly relationship of these controllable light source chips 10 forms a conditional influence on the lighting control scheme. That is, the assembly relationship of the controllable light source chip 10 is considered for the formation of the light emitting region 100. For example, if two of the controllable light source chips 10 are assembled in parallel, the interactive terminal 50 controls the controllable light source chips 10 to emit light non-superimposed. For another example, if two controllable light source chips 10 are assembled at an angle, the interactive terminal 50 controls the controllable light source chips 10 to emit light in a superimposed manner so as to form a complete image. The light emitting region 100 is formed to emit light from the controllable light source chip 10, but the hardware assembly parameters to be considered are different. Preferably, the assembly relation of the controllable light source chip 10 is inputted as a predetermined parameter in a control scheme.
The multi-chip lighting control method of the preferred embodiment, as shown in fig. 2 and 3, includes the following steps:
A. collecting external environment information;
B. obtaining the required number of the controllable light source chips 10 and the required number of pixels according to the requirement of the light emitting area 100 of the target output;
C. the output controls the pixels corresponding to the controllable light source chip 10 to emit light; and
D. and (3) circularly returning to the step A until a shutdown instruction is received.
Further, in step B, the control method further includes the steps of: an assembly relationship of the controllable light source chip 10 is obtained. That is, before the calculation is obtained, the assembly relationship according to the controllable light source chip 10 is added as the condition considered for the calculation, in addition to the requirement according to the light emitting region 100. Further, by actively inputting parameters by the user, the assembly relationship of the controllable light source chip 10 can also be obtained.
Specifically, the multi-chip lighting control method is operated in a cyclic manner. First, the acquisition device 40 acquires environmental information outside the automobile. The environmental information may be a road state of a opponent vehicle or a pedestrian ahead, etc., within the range of the orientation of the acquisition device 40. Then, according to the required requirements of the light emitting area 100, the required pixels of the controllable light source chip 10 are calculated in combination with the parameters of the assembly relation of the controllable light source chip 10. It should be noted that, in addition to the illumination effect on the light-emitting area 100, the controllable light source chip 10 can also be controlled to output images to provide a human-vehicle interaction effect. That is, whether each pixel of each of the controllable light source chips 10 emits light, the light emission luminance, the light emission color, or the like is controlled. Moreover, the light emitted from each pixel of each controllable light source chip 10 is processed by the optical lens group 20 and then emitted through the projection lens 30, thereby fully utilizing the high performance of the controllable light source chip 10. Moreover, all the light rays projected by the controllable light source chip 10 have no gaps between the light spots in the light emitting area 100, so as to realize the splicing between different light spots. It is worth mentioning that the stitching between the different spots may be edge aligned or may be partially overlapping. That is, the gaps in the assembled relationship of the controllable light source chip 10 do not pass through the optical lens group 20 or the projection lens 30, fundamentally ensuring that the non-light emitting portion does not affect the final effect.
In addition, based on the real-time acquisition information of the acquisition device 40, the controllable light source chip 10 is controlled to emit light in real time, so as to effectively avoid the adverse effect of untimely switching of the high beam and the low beam. More importantly, the light emitting area 100 provided by the multi-chip lighting system or the multi-chip lighting control method is dead-angle free, so that running safety is ensured.
Specifically, optical schematic diagrams among the controllable light source chip 10, the optical lens group 20, and the projection lens 30 in the present preferred embodiment are shown in fig. 4A to 5B. In the preferred embodiment, there are two controllable light source chips 10, namely a first light source chip 11 and a second light source chip 12. Correspondingly, the optical lens group 20 is divided into two sets, namely a first optical lens group 21 and a second optical lens group 22. Of course, the number of the controllable light source chips 10 and the optical lens groups 20 is not limited in the present invention.
The first light source chip 11 and the second light source chip 12 are disposed in parallel with a certain interval therebetween. The first optical lens group 21 and the second optical lens group 22 are disposed in parallel with each other with a certain interval therebetween. That is, the first light source chip 11 is assembled in a kit corresponding to the first optical lens group 21, and the second light source chip 12 is assembled in a kit corresponding to the second optical lens group 22. Each of the controllable light source chips 10 has one of the optical lens sets 20 serving it. More specifically, the light transmission range of the optical lens set 20 is larger than the light emission range of the controllable light source chip 10, so that all emitted light can propagate without shielding.
In addition, the optical lens group 20 has the corresponding optical path therein corresponding to each of the controllable light source chips 10. In the preferred embodiment, the light emitted from the first light source chip 11 through the first optical lens group 21 to the projection lens 30 forms a first light path 31. The light emitted from the second light source chip 12 through the second optical lens 22 to the projection lens 30 forms a second light path 32. The light propagation paths of the light emitted from the first light source chip 11 and the second light source chip 12 are separated, and are collected in the projection lens 30 and then emitted to the outside of the light emitting region 100.
In one possible manner, the light emitted from the first light source chip 11 reaches the projection lens 30 after being amplified by the first optical lens group 21, and the light emitted from the second light source chip 12 reaches the projection lens 30 after being amplified by the second optical lens 22. The light rays reaching the first light path 31 and the second light path 32 of the projection lens 30 are received in parallel and then refracted to be emitted. In another possible manner, the light emitted from the first light source chip 11 is amplified and diverted by the first optical lens group 21 to reach the projection lens 30, and the light emitted from the second light source chip 12 is amplified and diverted by the second optical lens 22 to reach the projection lens 30. The light rays in the first light path 31 and the second light path 32 reaching the projection lens 30 have crossed. In either case, the first optical path 31 and the second optical path 32 meet such that the optical path from the projection lens 30 is complete. If the controllable light source chip 10 emits light, the light path emitted by the projection lens 30 has no empty dark portion.
Preferably, each of the optical lens groups 10 includes at least two lenses.
It should be noted that, in the projection lens 30, there is no gap between the incident light beams of the first light path 31 and the second light path 32, and there is no gap in the outgoing light path. The physical spacing between the first light source chip 11 and the second light source chip 12 has no effect on the final imaging result. It should be noted that the degree of intersection of the first optical path 31 and the second optical path 32 has an effect on the final imaging result, that is, the above-mentioned assembly relationship. The overlapping portion of the first optical path 31 and the second optical path 32 is known in advance as a control parameter, and the interactive terminal 50 further controls the light emission degree of the pixels in the first light source chip 11 and the second light source chip 12. That is, in a specific case, the left image of the light emitting region 100 is from the first light source chip 11, the right image of the light emitting region 100 is from the second light source chip 12, and the middle image of the light emitting region 100 is from the overlapping projection of the first light source chip 11 and the second light source chip 12. Of course, the proportion occupied by each partial image is preset according to the assembly relation.
Further, the degree of intersection is different for the first optical path 31 and the second optical path 32. Each multi-chip lighting system and the control method thereof have a certain set range in parameters. Preferably, after the assembly is completed, the light emitting ranges of the first light path 31 and the second light path 32 are detected separately, and the intersection degree and the assembly relationship are grasped. The detected parameters are then entered into the interactive terminal 50. Therefore, the assembly precision requirement can be reduced, and the manufacturing efficiency is improved. Moreover, the assembly relation can be obtained and a control method is added in the debugging of the first light source chip 11 and the second light source chip 12, so that the synchronous product detection and debugging is realized. In addition, in the later maintenance and calibration, the data of the interactive terminal 50 is directly updated, so that the trouble of disassembling hardware is reduced.
Further possible assembly relationships for the preferred embodiment are shown in fig. 6 and 7. The first light source chip 11 and the second light source chip 12 are placed at a certain angle. Correspondingly, the first optical lens set 21 and the second optical lens set 22 are also angled.
Specifically, as shown in fig. 6, the first light source chip 11 and the first optical lens group 21 are sequentially arranged to form the first light path 31 after the first light source chip 11 is lighted by the interactive terminal 50. Similarly, the second light source chip 12 and the second optical lens group 22 are sequentially arranged to form the second light path 32 after the second light source chip 12 is lighted by the interactive terminal 50. The first optical path 31 and the second optical path 32 extend substantially in a V-shape to the projection lens 30, and are extended outward from the relatively concentrated light source chip 10 toward the projection lens 30. That is, the first light source chip 11 and the first optical lens group 21 and the second light source chip 12 and the second optical lens group 22 are in a substantially V-shaped assembly relationship with each other. The projection lens 30 receives the incident light from the first light path 31 and the second light path 32, and then the two light paths intersect and are emitted. That is, the first light path 31 and the second light path 32 are deflected to collect the light emitted from each of the controllable light source chips 10, so as to simplify the light path structure.
It should be noted that, depending on the distance of the image plane, the position where the first optical path 31 and the second optical path 32 intersect may be located outside the image side of the projection lens 30. For example, if the image plane outside the image side of the projection lens 30 is located near the focal point of the projection lens 30, the light emitting area 100 is sufficiently filled with light. I.e. the complete pattern spots are finally spliced on the image plane.
More, the number of the controllable light source chips 10 may be three or more. The number of the optical lens groups 20 matched with the optical lens groups can be more than three, so that the optical treatment required by the controllable light source chip 10 can be satisfied.
Further, the multi-chip illumination system of the present invention may omit the projection lens 30 or embody the projection lens 30 as a transparent housing according to the distance of the light emitting region 100, which is mounted in an automobile. As shown in fig. 7, the first light path 31 and the second light path 32 extend substantially in a Λ shape, and are concentrated and emitted from the relatively far light source chip 10 toward the projection lens 30, so that the light emitted from the first light source chip 11 and the second light source chip 12 are non-parallel. That is, the light emitted from the first light source chip 11 and the second light source chip 12 is necessarily collected on the image side of the optical lens group 20 through the first optical lens group 21 and the second optical lens group 22. Therefore, no extra lens is needed for optical path processing, and no turning processing is needed. In particular, when the projection lens 30 is omitted, the combination of the two controllable light source chips 10 and the optical lens group 20 is positioned with respect to each other. Further, the first optical path 31 and the second optical path 32 run relatively close to each other, intersect at a predetermined position, and then exit to the outside. That is, in a particularly feasible manner, both the first light path 31 and the second light path 32 have an effect of converging each other, and finally the light spot is completely and seamlessly presented in the light emitting region 100.
When the distance of the image surface is proper, the image surface is spliced to form a complete pattern light spot. It should be noted that, the cross relationship between the first optical path 31 and the second optical path 32 will be used as a hardware control parameter of the interactive terminal 50. The corresponding pixels of the first light source chip 11 and the second light source chip 12 are correspondingly controlled to emit light according to the crossing position, crossing range, crossing distance, etc. of the first light path 31 and the second light path 32. The multi-chip lighting system is controlled to operate as a unitary device.
More preferably, the controllable light source chip 10 is an EVIYOS-LED chip.
More preferably, the curvature parameter of the projection lens 30 is preset, so that the first optical path 31 and the second optical path 32 are controlled to be deflected, and the light spots are spliced.
More preferably, the optical lens group 20 and the projection lens 30 are plastic lenses or plastic aspherical lenses.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.
Claims (17)
1. A multi-chip lighting control method comprising the steps of:
A. collecting external environment information;
B. obtaining the number of a plurality of controllable light source chips and the number of pixels according to the requirement of a light emitting area of target output;
C. outputting and controlling the pixels corresponding to the controllable light source chips to emit light; and
D. the step A is circularly returned until a shutdown instruction is received,
wherein each controllable light source chip is controlled to emit light to form a light path, and a plurality of the light paths are intersected with each other, wherein the step B further comprises: obtaining the intersection degree of the light paths corresponding to the controllable light source chips, wherein the step C further includes: controlling the pixels corresponding to the controllable light source chips to emit light according to the crossing degree of the light paths,
wherein, the light emitted by each controllable light source chip is amplified by the corresponding optical lens group and finally appears in a light-emitting area through the same projection lens arranged on the image sides of a plurality of the optical lens groups, the optical lens groups are in one-to-one correspondence with the controllable light source chips,
wherein, a space is arranged between two adjacent optical lens groups; the light transmission range of the optical lens group is larger than the light emitting range of the controllable light source chip, so that all light rays can be transmitted without shielding.
2. The control method according to claim 1, wherein the step B further includes the step of: and obtaining the assembly relation of a plurality of the controllable light source chips.
3. The control method of claim 1, wherein the controllable light source chips are individually pixel controllable.
4. The control method of claim 1, wherein a plurality of the controllable light source chips are assembled at an angle.
5. The control method of claim 1, wherein a plurality of the controllable light source chips are assembled in parallel with a space therebetween.
6. A multi-chip illumination system, comprising:
at least two controllable light source chips;
at least two optical lens groups; and
a projection lens, wherein the controllable light source chips are arranged in a one-to-one correspondence with the optical lens groups, wherein the projection lens is arranged at the image side of a plurality of the optical lens groups, wherein the controllable light source chips are controllable by individual pixels, wherein the light emitted by each controllable light source chip is amplified by the corresponding optical lens group and finally displayed in a light-emitting area through the projection lens,
wherein each controllable light source chip is controlled to emit light to form a light path, and a plurality of light paths are mutually intersected; a space is reserved between two adjacent optical lens groups; the light transmission range of the optical lens group is larger than the light emitting range of the controllable light source chip, so that all light rays can be transmitted without shielding.
7. The multi-chip illumination system of claim 6, wherein the shape of the light emitting region is selected from at least one of the following combinations: square, rectangle, shape with multiple rectangle parts overlapping.
8. The multi-chip illumination system of claim 6, wherein the respective light paths of the controllable light source chips intersect each other at the projection lens.
9. The multi-chip illumination system of claim 6, wherein the corresponding light paths of the controllable light source chips intersect the projection lens image side.
10. The multi-chip illumination system of claim 6, wherein the corresponding light paths of the controllable light source chips intersect the projection lens object side.
11. The multi-chip illumination system of claim 6, wherein a plurality of the controllable light source chips are assembled in parallel with a space between the plurality of controllable light source chips.
12. The multi-chip illumination system of claim 6, wherein a plurality of the controllable light source chips are assembled at an included angle.
13. The multi-chip illumination system of claim 6, wherein the controllable light source chips are two, wherein a substantially Λ -shaped assembly relationship is present between combinations of two of the controllable light source chips and the corresponding optical lens sets.
14. The multi-chip illumination system of claim 6, wherein the controllable light source chips are two, wherein a substantially V-shaped assembly relationship is present between the two controllable light source chips and the corresponding combination of the optical lens sets.
15. The multi-chip lighting system of claim 6 or 7, further comprising a harvesting device and an interactive terminal, wherein the harvesting device is electrically connected to the interactive terminal by a control input, wherein the controllable light source chip is electrically connected to the interactive terminal by a control output.
16. The multi-chip illumination system of claim 15, wherein an assembly relationship of a plurality of the controllable light source chips is inputted as a predetermined parameter to the interactive terminal.
17. The multi-chip lighting system of claim 15, wherein an assembly relationship of a plurality of the controllable light source chips is obtained and inputted as a predetermined parameter to the interactive terminal when each of the controllable light source chips that have been assembled is tested.
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