CN204991701U - A light source for producing light - Google Patents

Abstract

The utility model relates to a light source for producing light. Wherein, this light source includes: first chip for send near infrared, the second chip for send compensation light, wherein, first chip and second chip include the LED chip, and first chip and second chip are installed in the light source according to predetermineeing the mode of arranging, and smooth the mixture with near infrared of compensation forms target light, and target light is non - ruddiness. This application has been solved and has been weakened the poor technical problem of the red effect of exposing to the sun of light source.

Description

For generation of the light source of light

Technical field

The application relates to optical field, in particular to a kind of light source for generation of light.

Background technology

Near-infrared light source is applied to field of video monitoring, and modal near-infrared light source comprises: the LED infrared lamp of centre wavelength 850nm and 940nm, and the semiconductor laser infrared lamp of centre wavelength 808nm.Because the light of the photosensory cell of human eye to above-mentioned wavelength has certain susceptibility; so when the light source of wavelength centered by above-mentioned wavelength is opened, human eye often there will be the phenomenon seeing that light source is rubescent, and optical source wavelength is shorter; redness phenomenon is more remarkable, generally this phenomenon is called red exposing to the sun.

In general purpose monitoring field, the slight red phenomenon of exposing to the sun that near-infrared light source occurs still can be accepted by human eye; But in the monitoring field of some special purposes, the red phenomenon of exposing to the sun of light source can not be ignored, especially in the monitoring field of transportation industry, red phenomenon of exposing to the sun can cause human eye near-infrared to be thought by mistake being the red light stopped in emergency, even causing severe traffic accidents.

In prior art, solve red method of exposing to the sun mainly by being moved toward long wave end by optical source wavelength and solving red phenomenon of exposing to the sun with the use of long wave pass filter.Because near infrared band, the wavelength of light source is longer, and the photosensitivity of human eye is lower, such as: the red effect of exposing to the sun of light source is just significantly less than the light source of 850nm; General prevents the red light compensating lamp exposed to the sun, its centre wavelength all can be arranged on more than 940nm, what have even reaches 970nm to 980nm, and simultaneously with the use of the filter of long-pass, the composition of part shorter wavelength in light source (especially LED) is filtered out, thus reaches the red effect of exposing to the sun of reduction.But in practical application, the wavelength of 940nm can produce red problem of exposing to the sun equally, and the wavelength of light source is longer, the susceptibility of video camera sensitive chip is lower, the light filling effect of video camera is also poorer, and the distance of light filling can be very restricted, and the distance of light filling can be very restricted on the one hand, also can increase the power output of light source in addition on the one hand, bring further problem to system power supply and heat radiation.The red method of exposing to the sun of current elimination all cannot thoroughly eliminate red exposing to the sun.

Wherein, red exposing to the sun is a kind of visual phenomenon, and human eye is except except perception visible ray, can also have certain susceptibility to the light of near-infrared wavelength.When optical system adopts near infrared light source lighting, human eye direct-view light source also can see redness to a certain extent, and this kind of phenomenon is called red exposing to the sun.

For the problem of the red weak effect exposed to the sun of above-mentioned weakening light source, at present effective solution is not yet proposed.

Summary of the invention

Present embodiments provide a kind of light source for generation of light, at least to solve the technical problem weakening the red weak effect exposed to the sun of light source.

According to the another aspect of the present embodiment, provide a kind of light source producing light, comprising: the first chip, for sending near infrared light; Second chip, for sending compensating light, wherein, the first chip and the second chip comprise LED chip, and the first chip and the second chip are arranged in light source by default arrangement mode, and compensating light and near infrared light are mixed to form target light, and target light is non-ruddiness.

Further, default arrangement mode comprises: any one in straight line arrangement, polygonal array, vertical arrangement and laid out in parallel.

Further, the first chip comprises one or more, and the second chip comprises one or more, and the mounting distance between each first chip and each the second chip is less than predeterminable range.

Further, the size of the second chip is less than or equal to the size of the first chip.

Further, light source also comprises: packaging body, packaging body packaging LED chips.

Further, LED chip is arranged on the substrate of packaging body, and the body of each LED chip is arranged in chip mounting area corresponding on the face of substrate.

Further, light source also comprises: electrode pair, and the quantity of electrode pair and the quantity of LED chip match, and each electrode pair comprises the first electrode and the second electrode, the positive pole of the LED chip that the first Electrode connection is corresponding, the negative pole of the LED chip that the second Electrode connection is corresponding.

Further, electrode pair is arranged between corresponding LED chip and substrate, and the electrode installation region of electrode pair is positioned at corresponding chip mounting area; Or electrode pair is arranged on the face of substrate, a part for electrode pair is positioned at outside the face of substrate.

Further, the first chip is multiple, connects after multiple first chip-in series or parallel connection with corresponding electrode pair.

Further, each LED chip uses packaging body individual packages.

Further, light source also comprises: long wave pass filter, is arranged in the light path of near infrared light, for filtering the short-wavelength light near infrared light.

Further, target light is not any one in ruddiness, gold-tinted and green glow.

Further, light source also comprises reflector, and reflector comprises: optical sensor, for obtaining the near infrared light that the first chip sends; Power determining device, is connected with optical sensor, and for the power output of the power output determination compensating light according to the near infrared light obtained, wherein, the power output of compensating light is less than or equal to the power output of near infrared light; Light emitting devices, is connected with power determining device, for the output power second chip emission compensating light according to compensating light.

Further, power output n the order of magnitude lower than the power output of near infrared light of compensating light, wherein, n≤4 or 5.

Adopt the embodiment of the present application, the near infrared light that the first chip sends and the compensating light that the second chip sends can be mixed to form target light, and target light is wherein the light of other colors except ruddiness.Pass through above-described embodiment, compensating light and near infrared light can be adopted to be mixed to form the target light of non-redness, the visual effect of human eye cannot be sensed, and red exposing to the sun eliminates red exposing to the sun, and solves the technical problem weakening the red weak effect exposed to the sun of light source, achieves and eliminates red effect of exposing to the sun.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide further understanding of the present application, and form a application's part, the schematic description and description of the application, for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:

Fig. 1 is a kind of optional schematic diagram for generation of the light source of light according to the present embodiment;

Fig. 2 is the schematic diagram of the photosensitivity-wavelength curve of a kind of optional human eye according to the present embodiment;

Fig. 3 (a) is the chip array schematic diagram of a kind of optional light source according to the present embodiment;

Fig. 3 (b) is the chip array schematic diagram according to the optional light source of the second of the present embodiment;

Fig. 3 (c) is the chip array schematic diagram of the third the optional light source according to the present embodiment;

Fig. 3 (d) is the chip array schematic diagram of the 4th kind of optional light source according to the present embodiment;

Fig. 3 (e) is the chip array schematic diagram of the 5th kind of optional light source according to the present embodiment;

Fig. 3 (f) is the chip array schematic diagram of the 6th kind of optional light source according to the present embodiment;

Fig. 4 is optionally for generation of the schematic diagram of the light source of light according to the present embodiment the second;

Fig. 5 is the schematic diagram of a kind of optional single LED drive circuit according to the present embodiment;

Fig. 6 is the schematic diagram of a kind of optional multipath LED drive circuit according to the present embodiment;

Fig. 7 is the schematic diagram according to the optional multipath LED drive circuit of the second of the present embodiment;

Fig. 8 (a) is a kind of optional device schematic diagram for generation of the light source of light according to the present embodiment;

Fig. 8 (b) is optionally for generation of the device schematic diagram of the light source of light according to the second of the present embodiment;

Fig. 8 (c) is optionally for generation of the device schematic diagram of the light source of light according to the third of the present embodiment;

Fig. 9 (a) is the 4th kind of optional device schematic diagram for generation of the light source of light according to the present embodiment;

Fig. 9 (b) is the 5th kind of optional device schematic diagram for generation of the light source of light according to the present embodiment;

Figure 10 (a) is the electrode position schematic diagram of a kind of optional light source according to the present embodiment;

Figure 10 (b) is the electrode position schematic diagram according to the optional light source of the second of the present embodiment;

Figure 11 is the electrode installation site schematic diagram of a kind of optional LED scheme according to the present embodiment;

Figure 12 is the third schematic diagram for generation of the light source of light according to the present embodiment;

Figure 13 is the 4th kind of schematic diagram for generation of the light source of light according to the present embodiment;

Figure 14 is the 5th kind of schematic diagram for generation of the light source of light according to the present embodiment;

Figure 15 is the chromatic diagram of the color space according to the present embodiment;

Figure 16 is a kind of schematic diagram optionally determining compensating light chromaticity coordinates according to the present embodiment;

Figure 17 is the schematic diagram optionally determining compensating light chromaticity coordinates according to the second of the present embodiment;

Figure 18 is the schematic diagram optionally determining compensating light chromaticity coordinates according to the third of the present embodiment.

Embodiment

The application's scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the present embodiment, the technical scheme in the present embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the application's part, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.

It should be noted that, term " first ", " second " etc. in the specification of the application and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as the embodiment of the application described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.

It should be noted that, according to the embodiment of a kind of light compensation method that the application provides, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.

Fig. 1 is a kind of optional schematic diagram for generation of the light source of light according to the present embodiment.As shown in Figure 1, this equipment can comprise: the first chip 10 and the second chip 30.

Wherein, the first chip 10 is for sending near infrared light; Second chip 30 is for sending compensating light.

First chip and the second chip comprise LED chip, and the first above-mentioned chip 10 and the second chip 30 are arranged in light source by default arrangement mode, and compensating light and near infrared light are mixed to form target light, and target light is non-ruddiness.

Adopt above-described embodiment, the near infrared light that the first chip sends and the compensating light that the second chip sends can be mixed to form target light, and target light is wherein the light of other colors except ruddiness.Pass through above-described embodiment, compensating light and near infrared light can be adopted to be mixed to form the target light of non-redness, the visual effect of human eye cannot be sensed, and red exposing to the sun eliminates red exposing to the sun, and solves the technical problem weakening the red weak effect exposed to the sun of light source, achieves and eliminates red effect of exposing to the sun.

Near infrared light (NearInfrared, NIR) be electromagnetic wave between visible ray (VIS) and mid-infrared light (MIR), refer to the electromagnetic wave of wavelength within the scope of 780 ~ 2526nm by U.S.'s test and the definition of material tests association, again near infrared region is divided into near-infrared shortwave (780-1100nm) and near-infrared long wave (1100-2526nm) two regions traditionally.

The number of the first chip in the above-described embodiments can be one or more, and the number of the second chip also can be one or more.If the second chip is multiple, the number of the compensating light that correspondence can send also can be the compensating light of multiple color.The compensating light of the multiple color that the near infrared light that the first chip sends sends with the second chip mixes and generates target light.

Target light in above-described embodiment can for white light, visually close to white light other color of light or visually can not cause red expose to the sun sensation other color of light, i.e. any light that human eye can not be caused near infrared light to be judged as the color of traffic signals.

Particularly, composition graphs 2 explains that the above embodiments of the present application weaken red principle of exposing to the sun.

First chip (i.e. light source) of what human eye was seen send near infrared light, is visually equivalent to a lower powered red light emitting device (i.e. red light source).If superpose one or more the second chip (i.e. compensatory light sending compensating light on this red light emitting device (i.e. red light source) again, as, a blueness and a green compensatory light), just can synthesize light-emitting device (the i.e. target light source that sends target light, as, a white light source), although this target light source human eye also can be seen, human eye red problem of exposing to the sun visually can not be caused.In general, although the power of near infrared light is larger, but because human eye is very low to the susceptibility of its wavelength, so intrinsic brilliance is also very low, the compensating light that superposes with it (as, blue light and green glow) all only need very little brightness and power just can realize, obvious lifting can not be caused to the overall power of the first chip (red light source).

Photosensitivity-the wavelength curve (i.e. human eye luminosity function curve) of human eye as shown in Figure 2, in Fig. 2, transverse axis represents the wavelength X of light source, and unit is nm, and the longitudinal axis represents the relative power susceptibility V of human eye to certain wavelength, and maximum is about decided to be 1.Under comparatively bright condition, the lightsensitivity of human eye to about 555nm wavelength is the highest, and very low to the susceptibility of near infrared light and black light.Under the condition that the area of light source is identical with lighting angle and identical with observer's relative position, the green light of 1 milliwatt, the light levels in human eye, is equivalent to the effect that hundreds of milliwatt even near infrared light of several watts can reach.The infrared light supply of a number watt power conversely speaking, utilize the milliwatt even compensating light of microwatt rank (as, green light and blue light), " neutralization " target light (e.g., a white light source) can be become, thus reach the red effect of exposing to the sun of elimination.

In the above-described embodiments, because human eye has photosensitivity to a certain degree all the time near infrared wavelength, optical source wavelength and barrier portion wavelength components is increased without the need to passing through physically, by utilizing the visual effect of human eye, the near infrared light that the compensating light adopting the second chip to send and the first chip send is mixed to form target light (non-ruddiness) and can reaches and eliminate red effect of exposing to the sun.

Alternatively, default arrangement mode in the above-described embodiments can comprise: any one in straight line arrangement, polygonal array, vertical arrangement and laid out in parallel.

As shown in Fig. 3 (a) to Fig. 3 (f), first chip and the second chip are arranged in light source by default arrangement mode, this default arrangement mode can comprise: the straight line arrangement as shown in Fig. 3 (a), Fig. 3 (b) He Fig. 3 (c), the polygonal array as shown in Fig. 3 (d), Fig. 3 (e) He Fig. 3 (f), the vertical arrangement as shown in Fig. 3 (f), and any one in laid out in parallel as shown in Fig. 3 (a), Fig. 3 (b) He Fig. 3 (c).

Particularly, as shown in Fig. 3 (a), the first chip 10 and the second chip 20 in light source, can be comprised, this first chip and the second chip substrate 21 in light source linearly arranges (or laid out in parallel).

As shown in Fig. 3 (b), first chip 10 and two the second chips 20 in light source, can be comprised, this first chip and two the second chips substrate in light source linearly arranges (or laid out in parallel).Wherein, as shown in Fig. 3 (b), the first chip 10 can be positioned at the centre position of substrate 21, and the second chip 20 can be arranged in the both sides of the first chip 10.

As shown in Fig. 3 (c), first chip 10 and three the second chips 20 in light source, can be comprised, this first chip and three the second chips substrate 21 in light source linearly arranges (or laid out in parallel).Wherein, as shown in Fig. 3 (c), the first chip 10 can be positioned at the left side of substrate, and three the second chips 20 can be positioned at the right side of the first chip 10, and these three the second chip laid out in parallel.

As shown in Fig. 3 (d), first chip 10 and three the second chips 20 in light source, can be comprised, in polygonal array (quadrangle arrangement) on this first chip and three the second chips substrate 21 in light source.Wherein, as shown in Fig. 3 (d), the first chip 10 can be positioned at position, upper left side, and three the second chips 20 can lay respectively at the positive location right of the first chip 10, positive lower position and lower right position.

As shown in Fig. 3 (e), two the first chips 10 and four the second chips 20 in light source, can be comprised, the arrangement in quadrangle on these two first chips and four the second chips substrate 21 in light source.Wherein, as shown in Fig. 3 (e), two the first chips 10 can lay respectively at centre position, and four the second chips 20 can lay respectively at left side and the right side of two the first chips 10.

As shown in Fig. 3 (f), two the first chips 10 and two the second chips 20 in light source, can be comprised, the arrangement in quadrangle on these two first chips and two the second chips substrate 21 in light source.As shown in Fig. 3 (f), two the first chips 10 can lay respectively at position, both sides, and two the second chips 20 can lay respectively at the centre position of two the first chips 10, and two the second chips 20 vertically arrange/are arranged in light source.

Adopt above-described embodiment, by one or more first chip and one or more second chip are installed in light source according to the arrangement mode of straight line, triangle, quadrangle, polygon, annular and other irregular shapes, the installation process simplifying light-emitting device can be reached, shorten the object of installation and process time.

In above-described embodiment of the application, as shown in Figure 4, light source can also comprise reflector 50, and this reflector 50 comprises: optical sensor 51, power determining device 53 and light emitting devices 55.

Wherein, optical sensor 51, for obtaining the near infrared light that the first chip sends.

Power determining device 53, is connected with optical sensor, and for the power output of the power output determination compensating light according to the near infrared light obtained, wherein, the power output of compensating light is less than or equal to the power output of near infrared light.

Light emitting devices 55, is connected with power determining device, for the output power second chip emission compensating light according to compensating light.

By adopting above-described embodiment, after the first chip sends near infrared light, information entrained by this infrared light can be obtained by optical sensor and be sent to power determining device, power determining device can read the power output of this near infrared light, thus determine the power output of compensating light, and this information is sent to light emitting devices, finally, light emitting devices can control the compensating light of the second chip emission determination power output, and this embodiment can realize the effect of the Output optical power of compensating light being carried out to accurately control in real time.

In above-described embodiment of the application, power output n the order of magnitude lower than the power output of near infrared light of compensating light, wherein, n≤4 or 5.

By adopting above-described embodiment, by the output power of compensating light be less than near infrared light power output ten thousand/or 100,000/ scope in can realize mixing with this near infrared light the effect generating target light, also namely compensating light only needs very little brightness and power just can realize, and can not increase the power consumption of whole light source.Therefore, red effect of exposing to the sun is eliminated when above-described embodiment can be implemented in the overall power of not obvious lifting luminaire.

In an optional embodiment, the first chip can comprise one or more, and the second chip can comprise one or more, and the mounting distance between each first chip and each the second chip is less than predeterminable range.Wherein, the first above-mentioned chip and the second chip can be all LED chip.

The first chip in above-described embodiment and the profile of the second chip can be squares, can reduce the technology difficulty in chip production process like this; The profile of the first chip and the second chip also can be rectangle, can reduce the size of the red LED that exposes to the sun of whole elimination like this after carrying out LED to it as far as possible.

Wherein, LED (LightEmittingDiode), also referred to as light-emitting diode, utilizes electronics in semiconductor and hole-recombination and a kind of light source of luminescence.

Predeterminable range in above-described embodiment can for the distance between the first chip when the angular resolution reaching human eye is 1 ' and the second chip, now the first chip and the visual angle of the second chip to human eye are less than 1 ', the details of people to the first chip and the second chip can not be differentiated, and all regard each first chip and each second chip as a point, as Fig. 3 (a) all can make human eye when circular arc is observed to the arrangement mode of the first chip in Fig. 3 (f) and the second chip, differential seat angle between two chips is very little, thus can eliminate red impact of exposing to the sun to greatest extent.

Resolution of eye is: when on space plane, two stains are brought to a certain degree mutually, and the observer leaving stain certain distance just cannot distinguish them, and this means that the ability of human eye resolution scenery details is limited, this limiting value is exactly resolution of eye.

By adopting above-described embodiment, mounting distance between each first chip and each the second chip is less than predeterminable range, namely the distance between each first chip and each the second chip is made all to reach minimum value, this just means when observing from afar, differential seat angle between each first chip and each the second chip is minimum, thus is conducive to eliminating red impact of exposing to the sun to greatest extent.

In the above-described embodiments, the size of the second chip can be less than or equal to the size of the first chip.

Wherein, because the power output of the second chip is well below the power output of the first chip, so the size of the second chip both can be consistent with the first chip, also can be much less than the first chip, in the overall alignment of each chip, most suitable arrangement mode can be selected according to the size of chip size.

By adopting above-described embodiment, the size of the second chip relative to the first chip can be adjusted flexibly, thus both can realize the effect reducing chip overall dimensions, the effect of control chip size and arrangement mode flexibly according to actual needs can be realized again.

The power difference of the infrared light that the compensating light sent due to the second chip and the first chip send is larger, the drive current of therefore corresponding LED chip has larger difference, the driving voltage of LED chip may be caused also different simultaneously, now, simply serial/parallel or mixed connection circuit is only utilized to connect between the chips, satisfied driving effect cannot be reached, corresponding drive circuit therefore will be adopted effectively to control LED chip.

The light source of the present embodiment also comprises one or more drive circuit, and every road drive circuit is for driving a LED chip, and every road drive circuit comprises: light-sensitive device 61, processor 62 and driving chip 63.Wherein, light-sensitive device 61, for detecting the light intensity signal of LED chip; Processor 62, for receiving light power signal and pulse signal, and generates control signal according to light intensity signal and pulse signal; And driving chip 63, for generating drive current under the triggering of control signal, LED chip issues bright dipping in the driving of drive current.

Drive circuit in above-described embodiment can also comprise: amplifying circuit, for amplifying the light intensity signal that light-sensitive device detects.

Below in conjunction with Fig. 5, Fig. 6 and Fig. 7, drive circuit is introduced.

The circuit that a kind of single LED as shown in Figure 5 drives comprises: integrated drive chips, inductance L, resistance R, the first diode D1, the second diode D2, the first electric capacity C1 and the second electric capacity C2.

Wherein, integrated drive chips M comprises four ports, is respectively input port EN/ADIM, transmit port SEN, receiving port IN, and control port LX.

The input port EN/ADIM of integrated drive chips M, transmit port SEN is connected with one end of resistance R; The transmit port SEN of microprocessor M is connected with the positive pole of the first diode D1; The transmit port SEN of microprocessor M is connected with the first electric capacity C1, and the negative pole of the first diode is connected with one end of resistance L; The receiving port IN of microprocessor is connected with the other end of resistance R, and the receiving port IN of microprocessor is connected with the negative pole of the second diode D2; The control port LX of processor is connected with the positive pole of the second diode D2, and the control port LX of processor is connected with the second electric capacity C2, and the other end of the second electric capacity C2 is connected to ground.

As shown in Figure 5, by utilizing, integrated drive chips (i.e. processor 62 and driving chip 63) adds the resistance R of periphery to the circuit that drives of a kind of single LED, inductance L, the first electric capacity C1 and the second electric capacity C2 (i.e. light-sensitive device 61) can realize the controlling functions that drives the constant current of LED chip (i.e. the first diode D1).The input of this single LED drive circuit can adopt analog DC voltage signal Analog or pulse signal (PWM ripple signal, PWMdimming) size of drive current is controlled, as shown in Figure 5, analog DC voltage signal Analog or PWM ripple signal (PWMdimming) enter driving chip from input port EN/ADIM, signal is sent by the transmit port SEN of the signal of driving chip, after light-emitting diode (i.e. the first diode D1) and the first electric capacity C1 inductance L and resistance R, driving chip is got back to by the receiving port IN of signal, this driving chip is by grounding ports GND ground connection.

As shown in Figure 6, a Micro-processor MCV (i.e. processor 62) also can be utilized simultaneously to control the circuit of multiple LED driving, realize the function of infrared light and compensating light Synchronization Control.In circuit shown in Fig. 6, comprise Micro-processor MCV (i.e. processor 62), driving chip 63, LED luminescence chip D (LED chip namely arrived in above-described embodiment).Wherein, processor MCU (i.e. processor 62) is electrically connected with driving chip 63, and driving chip 63 and LED luminescence chip D (namely in above-described embodiment to LED chip) are electrically connected.

Concrete, Micro-processor MCV (i.e. processor 62) exports the pulse signal (i.e. PWM ripple) of modulation duty cycle, controls LED drive chip and realizes power supply to single LED.Light-sensitive device, for detecting the luminous intensity of LED, can be arranged near light source.In order to prevent the interference of veiling glare in environment, one can be used to be arranged on before the photosurface of light-sensitive device through the narrow band pass filter that centre wavelength is identical with LED emission center wavelength.After the luminous intensity of LED declines because of the reason such as chip is aging, also there is corresponding change in the signal of light-sensitive device thereupon.Now MCU Zhi Duige road driving chip exports separately the pulse signal (i.e. PWM ripple) of different duty, and waveform does not change in time.The difference of the analog signal that the comparator of MCU inside is more current and ideal signal, if this difference exceedes certain threshold value, represent that the luminous intensity of LED there occurs to change largely, thus trigger the duty ratio that MCU changes pulse signal (i.e. PWM ripple), the output current of adjustment LED drive chip, thus realize readjusting of LED luminous intensity.And the light intensity of any paths of LEDs exports and can independently be adjusted, thus ensure that the stable of whole system output light intensity and color.

Drive circuit as shown in Figure 7, adds amplifying circuit 64 and light-sensitive device 61 compared with the drive circuit shown in Fig. 6.In circuit shown in Fig. 7, comprise processor MCU, driving chip, LED luminescence chip (LED chip namely arrived in above-described embodiment), amplifying circuit, and light-sensitive device.Wherein, processor MCU is electrically connected with driving chip, and driving chip and LED luminescence chip (namely in above-described embodiment to LED chip) are electrically connected.Processor MCU is also electrically connected with amplifying circuit, and amplifying circuit and light-sensitive device 61 are electrically connected.Wherein, amplifying circuit is electrically connected with processor MCU, and the signal of light-sensitive device 61 is by becoming an analog signal and inputting the A/D port of MCU after amplifying circuit.The precision of process can be improved like this, realize the independently adjustment again of LED luminous intensity, thus ensure that the stable of whole system output light intensity and color.

Pass through above-described embodiment, adopt Micro-processor MCV (i.e. processor 62) to control the method for multiple LED drive circuit to adjust the output current of LED drive chip simultaneously, thus realize to LED chip luminous intensity effectively and independently control adjustment, thus ensure that the stable of whole system output light intensity and color, realize the effect to infrared light and compensating light Synchronization Control.

In an optional embodiment, light source also comprises: packaging body, packaging body packaging LED chips.

Adopt above-described embodiment, with packaging body by the first chip together with the second chip package, thus protection the first chip and the second chip are by the impact of external environment.

In an optional embodiment, packaging body can comprise substrate and transparency cover, and wherein, the first chip and/or the second chip are arranged on substrate; Transparency cover lid is located on the first chip and the second chip.Wherein, transparency cover can be cover plate or lens.

Alternatively, packaging body can also comprise strutting piece, this strutting piece between substrate and transparency cover, for supporting transparency cover.

Alternatively, packaging body can also comprise speculum, and speculum is positioned at packaging body, and speculum is around the outside being arranged on the first chip and the second chip.

Simple introduction is done below in conjunction with Fig. 8 (a), Fig. 8 (b), Fig. 8 (c), Fig. 9 (a) and Fig. 9 (b) each part to the packaging body in above-described embodiment.As shown in Fig. 8 (a), packaging body can comprise substrate 21, cover plate (i.e. transparency cover) 22 and strutting piece (i.e. supporting construction) 23, wherein, transparency cover is cover plate (the transparent cover plate material namely encapsulated), LED chip 25 is packaged in packaging body, and wherein, LED chip 25 is arranged on substrate, transparency cover lid is located on the first chip and the second chip, and strutting piece (i.e. supporting construction) is between substrate and transparency cover.

Wherein, LED chip can send infrared light needed for illumination or various compensating light in the energized state, and its centre wavelength can be common 850nm, 940nm or other values.

Fig. 8 (b) shows a kind of improvement project based on the packaging body shown in Fig. 8 (a), packaging body can also comprise speculum 24 (as Suo Shi Fig. 8 (b), Fig. 8 (c) and Fig. 9 (b)), speculum can be arranged around LED chip 25 (i.e. the first chip and the second chip), for the light that reflective edges is launched, to promote utilization ratio.

Fig. 8 (c) shows the scheme of the package body structure of another possibility, and transparency cover, except using cover plate (as in Fig. 8 (a) 22), can also be the transparent materials 27 such as silica gel, can be used for LED chip overall package.This silica gel transparent material can be the transparent material that light transmission is high, environmental aging is low, fast light and heat resistance is excellent.

As shown in Fig. 9 (a) He 9 (b), packaging body comprises substrate 21, lens (i.e. transparency cover) 28, strutting piece (having another name called supporting construction) 23 (as Suo Shi Fig. 9 (a)) and speculum 24 (as Suo Shi Fig. 9 (b)).Wherein, transparency cover is lens, LED chip 25 (i.e. the first chip and the second chip) the first chip and/or the second chip (being also LED chip 25) are packaged in packaging body, wherein, LED chip 25 (i.e. the first chip and the second chip) is arranged on substrate, lens cover is located on LED chip 25, and strutting piece (i.e. supporting construction) is between substrate and transparency cover.Wherein, when adopting lens as transparency cover, strutting piece (i.e. supporting construction) can omit; According to lens as transparency cover, can be implemented in while eliminating red exposing to the sun, the luminous beam of LED chip is adjusted to suitable distribution angle.

In an optional embodiment, the LED chip of light source is arranged on substrate, and the body of each LED chip is arranged on the substrate of packaging body, and the body of each LED chip is arranged in chip mounting area corresponding on the face of substrate.

In the above-described embodiments, light source can also comprise: electrode pair, and the quantity of electrode pair and the quantity of LED chip match, and each electrode pair comprises the first electrode and the second electrode, the positive pole of the LED chip that the first Electrode connection is corresponding, the negative pole of the LED chip that the second Electrode connection is corresponding.

Electrode pair in above-described embodiment can be arranged between corresponding LED chip and substrate, and the electrode installation region of electrode pair is positioned at corresponding chip mounting area; Or electrode pair can be arranged on the face of substrate, a part for electrode pair is positioned at outside the face of substrate.

In the above-described embodiments, the first chip is multiple, connects after multiple first chip-in series or parallel connection with corresponding electrode pair.

Pass through above-described embodiment, the installation site of electrode pair can adjust according to actual needs, as shown in Figure 10 (a), electrode pair 29 can comprise two electrodes 290, installing electrodes corresponding to LED chip can be stretched out outside the body regions of LED chip to the position of 29, namely electrode pair is arranged on the face of substrate 21, and a part for electrode pair is positioned at outside the face of substrate 21, to facilitate manual welding; As shown in Figure 10 (b), electrode pair 29 can comprise two electrodes 290, installing electrodes corresponding to LED chip also can be arranged on the rear surface regions of LED chip to 29 or electrode 290, namely electrode pair is arranged between corresponding LED chip and substrate 21, the electrode installation region of electrode pair is positioned at corresponding chip mounting area 201, is convenient to the volume reducing whole LED like this.

In above-described embodiment, installing electrodes pair on the LED chip of light source, and the quantity of the quantity of this electrode pair and LED chip matches.Electrode 290 in electrode pair 29 can be connected with the both positive and negative polarity of corresponding LED chip, luminous after can realizing to make LED chip being energized.As shown in figure 11, three LED chip laid out in parallel that LED chip (i.e. the first chip and the second chip) comprises on same substrate 21, and are encapsulated in same packaging body (i.e. encapsulating structure).

Wherein, when the first chip is multiple LED chip, simply can will connects between each LED chip or in parallel according to needing of connecting of circuit, connect after multiple LED chip serial or parallel connection with corresponding electrode pair.By utilizing electrode pair, LED chip be connected separately or multiple LED chip carried out connect or parallel connection, thus realizing circuit design, and effective driving LED chip light emitting.

In an optional embodiment, each LED chip uses packaging body individual packages.

By above-described embodiment, use each LED chip of packaging body individual packages, each LED chip is mutually only.When each LED chip distance observer is enough far away, and it is as far as possible close to each other between each LED chip, now different LED chips is enough little to the angle of visual field formed by observer, thus observer can be seen as single light source, observer cannot differentiate the different color of the light that each LED chip sends, and can only feel mixed uniform target light (e.g., white light), thus achieve and eliminate red effect of exposing to the sun.

In an optional embodiment, as shown in figure 12, light source can also comprise: optical sensor 91 and processor 93.

Wherein, transducer 91 is for obtaining the near infrared light of light source outgoing.

Processor 93 is for obtaining the first color parameter of the near infrared light of optical sensor acquisition, and read the second color parameter of target light from memory, and based on one or more 3rd color parameters of the first color parameter and the second color parameter determination compensating light.

By adopting above-described embodiment, obtain at optical sensor the near infrared light of light source outgoing information and after sending this information to processor, the information of processor to this near infrared light processes and acquires the first color parameter of this near infrared light, and from memory, read the second color parameter obtaining target light, and determine one or more 3rd color parameter according to the first color parameter and the second color parameter, to determine the compensatory light sending compensating light, control and compensation light source sends compensating light to carry out light filling to red light source.Thus the compensating light determining this near infrared light according to the near infrared information of light source outgoing fast and accurately can be realized, the compensating light determined due to employing and near infrared light are mixed to form target light to eliminate red exposing to the sun, and then achieve the effect determining fast to eliminate red scheme of exposing to the sun.

Wherein, the color parameter in above-described embodiment is for representing the color of light, and if the first color parameter is for representing the color of near infrared light, the second color parameter is for representing the color of target light.

The number of the 3rd color parameter in above-described embodiment can be one or more, and each 3rd color parameter is for representing a kind of compensating light of color, and also namely the amount of light of compensating light can be one or more, and the color of compensating light can be one or more; Above-mentioned target light can for white light, visually close to white light other color of light or visually can not cause red expose to the sun sensation other color of light, i.e. any light that human eye can not be caused near infrared light to be judged as the color of traffic signals.

Color parameter in the above-described embodiments can also be chromaticity coordinates, first color parameter comprises the first chromaticity coordinates, second color parameter comprises the second chromaticity coordinates, 3rd color parameter comprises trichromatic coordinates, then above-described embodiment can be achieved by the following scheme: after the near infrared light that transducer acquisition light source sends, after processor gets the first chromaticity coordinates of this near infrared light, obtain the second chromaticity coordinates of target light (as white light), and determine and one or more trichromatic coordinates that the first chromaticity coordinates and the second chromaticity coordinates match, to determine the compensatory light sending compensating light, control and compensation light source sends compensating light to carry out light filling to red light source.

Alternatively, as shown in figure 13, processor 93 can comprise: reading device 94, some determining device 95 and parameter determining device 96.

Wherein, reading device 94 for reading chromatic diagram from memory.

Point determining device 95 for determining the first color parameter corresponding first and second point corresponding to the second color parameter on a chromaticity diagram, and is determined thirdly one or more on a chromaticity diagram.

If parameter determining device 96 for the first point, second point and determine on a chromaticity diagram thirdly between position relationship meet predeterminated position relation, then determine that thirdly corresponding color parameter is the 3rd color parameter.

By adopting above-described embodiment, after processor reads chromatic diagram by reading device wherein, point determining device determines and second point on a chromaticity diagram at first, and then determine thirdly based on first with second point, finally, parameter determining device is checked the first point, second point and thirdly whether is met predeterminated position relation, if meet, then determine that thirdly corresponding color parameter is the 3rd color parameter, thus determine the 3rd color parameter with reference to chromatic diagram, reach the effect utilizing chromatic diagram efficiently to determine compensating light.

Wherein, first is at the first color parameter point corresponding in chromatic diagram, and second point is at the second color parameter point corresponding in chromatic diagram, is thirdly at the 3rd color parameter point corresponding in chromatic diagram.

In the above-described embodiments, reading device can also be used for reading tables of data from memory; The first numerical value that some determining device can also be used for determining that in this tables of data the first color parameter is corresponding and second value corresponding to the second color parameter, and determine one or more third value on a chromaticity diagram; If parameter determining device can also be used for the first point, second point and determine on a chromaticity diagram thirdly between position relationship meet predeterminated position relation, then determine that thirdly corresponding color parameter is the 3rd color parameter.

Reading device in processor in above-described embodiment can also be used for reading tables of data from memory; Point determining device can also be used in this tables of data, determine the first color parameter (as the first chromaticity coordinates) and the second color parameter (as the first chromaticity coordinates), if parameter determining device can also be used for the first color parameter (as the first chromaticity coordinates) and the second color parameter (as the first chromaticity coordinates) in this tables of data, then determine the 3rd color parameter (as trichromatic coordinates) corresponding in (namely reading) tables of data, to determine the compensatory light sending compensating light.Tables of data in this optional embodiment can be as shown in table 1.

Table 1

First chromaticity coordinates	Second chromaticity coordinates	Trichromatic coordinates
			(0.272,0.375)	(0.333,0.333)	(0.0235,0.413)
(0.735,0.265)	(0.333,0.333)	(0.0237,0.416)

The value of the chromaticity coordinates in above-mentioned table 1 is only made example and is illustrated can have different implementations or the form of expression in the application.

Above-described embodiment uses chromaticity coordinates to represent the color of light; Alternatively, tristimulus values can also be used to represent the color of light.

By above-described embodiment, processor passes through the color parameter (as chromaticity coordinates) of chromatic diagram or tables of data determination compensating light, can reach directly, determine compensating light chromaticity coordinates fast, thus determine the effect of compensating light and light filling scheme fast.

Alternatively, as shown in figure 14, parameter determining device 96 can comprise: lines construction device 961, position determining means 962 and polygon construction device 963.

Wherein, if lines construction device 961 is for being thirdly one, then determine on a chromaticity diagram one or more thirdly after, obtain the straight line that and second point are determined at first.

If position determining means 962 for second point first and thirdly between, then determine the first point, second point and determine on a chromaticity diagram thirdly between position relationship meet predeterminated position relation.

If polygon construction device 963 is for being thirdly multiple, then determine on a chromaticity diagram one or more thirdly after, form a polygon using each thirdly with the first as summit; Position determining means 962, if be also positioned at polygonal inside for second point, then determine the first point, second point and determine on a chromaticity diagram thirdly between position relationship meet predeterminated position relation.

Chromatic diagram in this embodiment can be the color space chromacity diagram shown in Figure 15, in Figure 15, each point represents a kind of color, the x coordinate of each point and y coordinate represent the one-component of the color that this point represents respectively, and (x, y) also can be understood as the chromaticity coordinates of this point.The color of each light is an all corresponding point in chromatic diagram, and also, a corresponding chromaticity coordinates, the chromaticity coordinates corresponding to the visible color gamut of human eye is arranged in the horseshoe-shaped region of figure, and the chromaticity coordinates that the light of Single wavelength is corresponding is positioned at the U-shaped edge of this horseshoe shaped region.

As shown in figure 15, represent the difference of color according to chromaticity coordinates, chromatic diagram can be divided into different color regions: green area, yellow tune green area, yellow green region, blue or green yellow area, yellow area, orange-yellow region, orange areas, reddish orange region, red area, aubergine region, reddish violet region, bloom red area, pink region, opera pink region, violet region, Tibetan blue region, blue region, turquoise region, blue green regions and homenergic region.Wherein, homenergic has blackbody radiance curve in region, the A on blackbody radiance curve, and the point such as B, C, D, E represents common white light source, and F point is positioned at red area, represents the color of common near infrared light.Above-mentioned different color region is all in horseshoe shaped region, and the chromaticity coordinates scope of the corresponding Single wavelength light in U-shaped border of horseshoe shaped region is from 460nm to 770nm.

Wherein, wavelength is the bottom right end points that the red light of more than 700nm and the chromaticity coordinates of near infrared light are positioned at this horseshoe shaped region, and different wave length all shrinks in same point as figure F point, F point chromaticity coordinates is (0.735,0.265) (in this chromatic diagram, all wavelengths is the light of more than 700nm, is all the same " red " in human eye, only has brightness different, how many regardless of its wavelength, can shrink in F point); Same, wavelength is the lower-left end points that the chromaticity coordinates of 380nm and following ultraviolet light thereof is positioned at this horseshoe shaped region; Wavelength is the upper summit that the chromaticity coordinates of the green glow of about 520nm is then positioned at this horseshoe shaped region.A in figure, the point such as B, C, D, E represents common white light source, and colour temperature and the chromaticity coordinates of these points are all different, and wherein the chromaticity coordinates of the white light source that E point is corresponding is (0.333,0.333).

Wherein, chromaticity coordinates (chromaticitycoordinate), being the coordinate for representing color, being also color specification system, now conventional color coordinates, transverse axis is x, the longitudinal axis is y, has had chromaticity coordinates, can determine a point on a chromaticity diagram, this Precise Representation glow color, i.e. chromaticity coordinates Precise Representation glow color.

2 of any two colors representative on the chromatic diagram shown in Figure 15 can connect into a line segment, and on this line segment, any one color representated by point, can be obtained by the blend of colors of two on end points; If the corresponding points of multiple color form a polygon (as some formation triangle that three Color pair are answered), the then any one color of this polygonal internal, can be obtained by this multiple blend of colors on this polygon (as triangle) summit.Such as, if target light is white light, to determine the compensating light of near infrared light, to make near infrared light and to compensate the mixed light closing and be mixed to get this white, the light filling scheme of a kind of color or multiple color mixing can be selected, as: can near infrared light be used, the light mixing of blue light and green glow three kinds of colors realizes, also can be mixed by near infrared light and blue green light and realize, certainly, other unlimited multiple hybrid mode can also be had.Wherein, selecting a kind of compensating light of color to carry out near infrared light light filling scheme that light filling obtains target light and whole light-supplementing system can be made more simple and easily realize, carrying out as adopted near infrared light and blue green light the mode mixed.

Concrete, if be thirdly one, namely when compensating light is a kind of color, and suppose that target light is now white light, also namely the compensating light of near infrared light and a color to be mixed into white target light, as shown in figure 16, then first can obtain second chromaticity coordinates (i.e. the second color parameter) of first chromaticity coordinates (i.e. the first color parameter) of near infrared light and the target light of white, and determine first point (the F point as in Figure 16) of the first chromaticity coordinates (i.e. the first color parameter) corresponding chromatic diagram and the second point (the E point as in Figure 16) of the second chromaticity coordinates (i.e. the second color parameter) corresponding chromatic diagram, the chromaticity coordinates of E point is (0.333, 0.333).After determining the first point (F point) and second point (E point), lines construction device may be used for the straight line that acquisition first point (F point) and second point (E point) are determined, and get on this line thirdly (the G point as in Figure 16), as shown in figure 16, second point (E point) is positioned at the first point (F point) and thirdly between (G point), therefore, position determining means can determine that the light of first corresponding color and the light of thirdly corresponding color can be mixed to form the light of color corresponding to second point, and the first point can be determined, second point and determine on a chromaticity diagram thirdly between position relationship meet predeterminated position relation, the light (compensating light namely in above-described embodiment) of the color that acquisition chromaticity coordinates is thirdly corresponding, this compensating light is used to compensate near infrared light.

May be used for determining the first point at the position determining means by above-described embodiment, second point and determine on a chromaticity diagram thirdly between position relationship meet predeterminated position relation after, read thirdly corresponding trichromatic coordinates (i.e. the 3rd color parameter), because the trichromatic coordinates (i.e. the 3rd color parameter) determined by such scheme can for multiple, also be, multiple light filling scheme can be had, detect in chromaticity coordinates table and whether there is this trichromatic coordinates (i.e. the 3rd color parameter), if there is this trichromatic coordinates in chromaticity coordinates table, compensating light corresponding to this trichromatic coordinates (i.e. the 3rd color parameter) then can be used to compensate near infrared light.

Wherein, chromaticity coordinates table is based on light source product (as light source chip) established data table, preserves the chromaticity coordinates of the light that there is light source product in this tables of data.

If be thirdly two, namely when compensating light is two kinds of colors, and suppose that target light is now white light, also namely the compensating light of near infrared light and two colors to be mixed into white target light, as shown in figure 17, then first can obtain second chromaticity coordinates (i.e. the second color parameter) of first chromaticity coordinates (i.e. the first color parameter) of near infrared light and the target light of white, and determine first point (the F point as in Figure 17) of the first chromaticity coordinates (i.e. the first color parameter) corresponding chromatic diagram and the second point (the E point as in Figure 17) of the corresponding chromatic diagram of the second chromaticity coordinates, the chromaticity coordinates of E point is (0.333, 0.333).Polygon construction device is used for after determining the first point (F point) and second point (E point), two on acquisition chromatic diagram thirdly (G1 point and G2 point), and to obtain by the first point (F point) and two be thirdly triangle (not using this triangle of label character in Figure 17) that summit is determined, in embodiment as shown in figure 17, position determining means is used for being positioned at when second point (E point) triangle interior determined, therefore can determine that the light of the light of first corresponding color and two thirdly corresponding two kinds of colors can be mixed to form the light of color corresponding to second point, and the first point can be determined, second point and determine on a chromaticity diagram two thirdly between position relationship meet predeterminated position relation, obtain the light (compensating light namely in above-described embodiment) of two kinds of colors corresponding to two chromaticity coordinatess thirdly, this compensating light is used to compensate near infrared light.

Concrete, according to compensating light be two kinds of colors, as blue light and green glow, namely near infrared light is adopted, the light of blue light and green glow three kinds of colors mixes the light filling scheme realized, then the region at second point place on triangle covering (comprising) target light (as white light) the corresponding chromatic diagram that the light (comprising the compensating light of near infrared light and two kinds of colors) of these three kinds of colors is corresponding on a chromaticity diagram point (be respectively first and two thirdly) is formed for summit.According to compensating light be multiple color, then the compensating light of near infrared light and multiple color is corresponding on a chromaticity diagram point (be respectively first and thirdly multiple) is the region that polygon that summit is formed covers second point place on (comprising) target light (as white light) corresponding chromatic diagram.

If be thirdly multiple, namely when compensating light is multiple color, and suppose that target light is now white light, also namely the compensating light of near infrared light and multiple color to be mixed into white target light, as shown in figure 18, then first can obtain second chromaticity coordinates (i.e. the second color parameter) of first chromaticity coordinates (i.e. the first color parameter) of near infrared light and the target light of white, and determine first point (the F point as in Figure 15) of the first chromaticity coordinates (i.e. the first color parameter) corresponding chromatic diagram and the second point (the E point as in Figure 15) of the second chromaticity coordinates (i.e. the second color parameter) corresponding chromatic diagram, the chromaticity coordinates of E point is (0.333, 0.333).Polygon construction device is used for after determining the first point (F point) and second point (E point), obtain by the first point (F point) and multiple thirdly (shown in Figure 18 is thirdly four, namely the G1 point in Figure 18, G2 point, G3 point and G4 point) convex polygon (not using this convex polygon of label character in Figure 18) determined for summit, it is inner that second point (E point) is as shown in figure 18 positioned at the convex polygon determined, then position determining means may be used for determining that first the corresponding light of color and the light of multiple thirdly corresponding multiple color can be mixed to form the light of color corresponding to second point, and the first point can be determined, second point and determine on a chromaticity diagram multiple thirdly between position relationship meet predeterminated position relation, obtain the light (compensating light namely in above-described embodiment) of multiple color corresponding to multiple chromaticity coordinates thirdly, this compensating light is used to compensate near infrared light.

The first point is determined at the position determining means by above-described embodiment, second point and determine on a chromaticity diagram thirdly between position relationship meet predeterminated position relation after, read thirdly corresponding trichromatic coordinates (i.e. the 3rd color parameter), because the set of the trichromatic coordinates (i.e. the 3rd color parameter) determined by such scheme can for multiple, also be, multiple light filling scheme can be had, whether each trichromatic coordinates detected in the set of this trichromatic coordinates is all present in chromaticity coordinates table, if each trichromatic coordinates in the set of this trichromatic coordinates (i.e. the 3rd color parameter) is all present in chromaticity coordinates table, the compensating light of the set correspondence of this trichromatic coordinates (i.e. the 3rd color parameter) then can be used to compensate near infrared light.

Wherein, chromaticity coordinates table is based on light source product (as light source chip) established data table, preserves the chromaticity coordinates of the light that there is light source product in this tables of data.

Alternatively, the light source in above-described embodiment can also comprise long wave pass filter, and this long wave pass filter is arranged in the light path of near infrared light, for filtering the short-wavelength light near infrared light.

In the above-described embodiments, by long wave pass filter being arranged in the light path of the near infrared light that the first light-emitting device (or second light-emitting device) sends, filter the short-wavelength light near infrared light, obtain the near infrared light after filtering, obtain the first color parameter of near infrared light after filtering and the second color parameter of target light by processor more afterwards.Adopt above-described embodiment, can reduce light source (as, LED light source) significantly redly exposing to the sun of causing of shorter wavelength composition in the near infrared light that sends, thus solve due to light source (as, LED light source) spectral distribution wider (tens nanometers) of near infrared light that sends and different batches light source (as, LED light source) between center wavelength shift larger, and the susceptibility of human eye shortens the very fast reason of raising near infrared band with wavelength and causes red problem of exposing to the sun, achieve the light source power reducing compensating light used simultaneously, improve the object of the illuminating effect of light source after light filling.

Alternatively, the target light in above-described embodiment is not any one in ruddiness, gold-tinted and green glow.

In the above-described embodiments, the color of target light can for being different from the color of traffic signals, other colors of (namely red, green and yellow), target light in comparatively ideal situation is white, by adopting above-described embodiment, due to people soon this secondary colour be no longer red, thus solve red problem of exposing to the sun.

Above-mentioned the present embodiment sequence number, just to describing, does not represent the quality of embodiment.

In above-described embodiment of the application, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.

In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.

If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that the technical scheme of the application contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.

The above is only the preferred implementation of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection range of the application.And aforesaid storage medium comprises: USB flash disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.

The above is only the preferred implementation of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection range of the application.

Claims (14)

1. for generation of a light source for light, it is characterized in that, comprising:

First chip, for sending near infrared light;

Second chip, for sending compensating light,

Wherein, described first chip and described second chip comprise LED chip, and described first chip and described second chip are arranged in light source by default arrangement mode, and described compensating light and described near infrared light are mixed to form target light, and described target light is non-ruddiness.

2. light source according to claim 1, is characterized in that, described default arrangement mode comprises: any one in straight line arrangement, polygonal array, vertical arrangement and laid out in parallel.

3. light source according to claim 1 and 2, it is characterized in that, described first chip comprises one or more, and described second chip comprises one or more, and the first chip described in each and the mounting distance described in each between the second chip are less than predeterminable range.

4. light source according to claim 3, is characterized in that, the size of described second chip is less than or equal to the size of described first chip.

5. light source according to claim 1, is characterized in that, described light source also comprises:

Packaging body, described packaging body encapsulates described LED chip.

6. light source according to claim 5, is characterized in that, described LED chip is arranged on the substrate of described packaging body, and the body of each described LED chip is arranged in chip mounting area corresponding on the face of described substrate.

7. light source according to claim 6, is characterized in that, described light source also comprises:

Electrode pair, the quantity of described electrode pair and the quantity of described LED chip match, each described electrode pair comprises the first electrode and the second electrode, the positive pole of the described LED chip that described first Electrode connection is corresponding, the negative pole of the described LED chip that described second Electrode connection is corresponding.

8. light source according to claim 7, is characterized in that, described electrode pair is arranged between corresponding described LED chip and described substrate, and the electrode installation region of described electrode pair is positioned at corresponding described chip mounting area; Or described electrode pair is arranged on the face of described substrate, a part for described electrode pair is positioned at outside the face of described substrate.

9. light source according to claim 8, is characterized in that, described first chip is multiple, connects after multiple described first chip-in series or parallel connection with corresponding described electrode pair.

10. light source according to claim 5, is characterized in that, each described LED chip uses described packaging body individual packages.

11. light sources according to claim 1, is characterized in that, described light source also comprises:

Long wave pass filter, is arranged in the light path of described near infrared light, for filtering the short-wavelength light in described near infrared light.

12. light sources according to claim 1, is characterized in that, described target light is not any one in ruddiness, gold-tinted and green glow.

13. light sources according to claim 1, it is characterized in that, described light source also comprises reflector, described reflector comprises:

Optical sensor, for obtaining the described near infrared light that described first chip sends;

Power determining device, is connected with described optical sensor, and for determining the power output of described compensating light according to the power output of the described near infrared light obtained, wherein, the power output of described compensating light is less than or equal to the power output of described near infrared light;

Light emitting devices, is connected with described power determining device, for compensating light described in the second chip emission described in the output power according to described compensating light.

14. light sources according to claim 13, is characterized in that, power output n the order of magnitude lower than the power output of described near infrared light of described compensating light, wherein, and n≤4 or 5.