CN204832739U

CN204832739U - A light source for producing light

Info

Publication number: CN204832739U
Application number: CN201520584222.2U
Authority: CN
Inventors: 何品将; 程广伟; 梁雪
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2015-08-05
Filing date: 2015-08-05
Publication date: 2015-12-02
Anticipated expiration: 2025-08-05

Abstract

The application discloses a light source for producing light, wherein, this light source includes: an illuminator for send near infrared, the 2nd illuminator for send compensation light, first light converges the device, and the setting is used for outgoing target light at the meet of an illuminator and the 2nd illuminator's emitting light path, and near infrared each other concerns for the mirror image in first light converges the device with compensation light that wherein, compensation light mixes formation target light with near infrared, 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, modal near-infrared light source comprises: the LED (LightEmittingDiode of centre wavelength 850nm and 940nm, light emitting diode) infrared lamp, 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 specific uses, 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 at near-infrared band, the wavelength of light source is longer, and the light sensitivity 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 optical 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 output power 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 matters weakening the red weak effect exposed to the sun of light source.

According to present embodiments providing a kind of light source for generation of light, this light source comprises: the first light-emitting device, for sending near infrared light; Second light-emitting device, for sending compensating light, first light converges device, be arranged on the meet of the emitting light path of the first light-emitting device and the second light-emitting device, for outgoing target light, near infrared light and compensating light to converge in device mirror each other at the first light, wherein, compensating light and near infrared light are mixed to form target light, and target light is non-ruddiness.

Further, the first light-emitting device comprises: the first illuminator; Lens, lens are arranged on the emitting light path of the first illuminator.

Further, the first illuminator is multiple, and lens are multiple, and the quantity of the first illuminator and the quantity of lens match, and the first light-emitting device also comprises: the second light converges device, is arranged in the emitting light path of corresponding lens, for converging the emergent light of lens.Further, the second light-emitting device comprises: the second illuminator; Lens, lens are arranged on the emitting light path of the second illuminator.

Further, the second illuminator comprises: blue-light-emitting device, green emitting device and blue-green illuminator.

Further, the second light-emitting device comprises: multiple second illuminator, multiple second illuminator laid out in parallel; The lens matched with the second illuminator, are arranged on the emitting light path of the second illuminator; First light converges device and comprises: multiple light converges sub-device, and each light converges the meet that sub-device is arranged on the emitting light path of lens and the first light-emitting device.

Further, the second illuminator comprises: at least one in blue-light-emitting device, green emitting device and blue-green illuminator.

Further, the first light converges device and comprises: spectroscope, at least one of closing in light microscopic and optical filter.

Further, the first illuminator device and the second light-emitting device comprise LED chip.

Further, light source also comprises: one or more driving circuit, and every road driving circuit is for driving a LED chip, and every road driving circuit comprises: photosensitive device, for detecting the light intensity signal of LED chip; Amplifying circuit, is connected with photosensitive device, for amplify light intensity signal be amplified after light intensity signal; Processor, is connected with amplifying circuit, for receiving the light intensity signal after amplification and pulse signal, and generates control signal according to light intensity signal and pulse signal; Driving chip, is connected with processor, and for generating drive current under the triggering of control signal, LED chip is luminous under the driving of drive current.

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

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

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.

Adopt above-described embodiment, after the second color parameter of the first color parameter and target light that get near infrared light, and based on the 3rd color parameter of this first color parameter got and the second color parameter determination compensating light, and use this compensating light to compensate near infrared light, use compensating light corresponding to the 3rd color parameter and near infrared light can be mixed to form target light (as white light).By above-described embodiment, by the visual effect of human eye, compensating light and near infrared light can be adopted to be mixed to form target light to eliminate red exposing to the sun, to solve the technical matters weakening the red weak effect exposed to the sun of light source, achieve and eliminate 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 embodiment of the present application;

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

Fig. 3 is optionally for generation of the schematic diagram of the light source of light according to the second of the embodiment of the present application;

Fig. 4 is the schematic diagram of a kind of optional single LED driving circuit according to the embodiment of the present application;

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

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

Fig. 7 is a kind of optional device schematic diagram for generation of the light source of light according to the embodiment of the present application;

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

Fig. 9 is the third schematic diagram for generation of the light source of light according to the embodiment of the present application;

Figure 10 is the 4th kind of schematic diagram for generation of the light source of light according to the embodiment of the present application;

Figure 11 is the 5th kind of schematic diagram for generation of the light source of light according to the embodiment of the present application;

Figure 12 is the chromatic diagram of the color space according to the embodiment of the present application;

Figure 13 is a kind of schematic diagram optionally determining compensating light chromaticity coordinates according to the embodiment of the present application;

Figure 14 is the schematic diagram optionally determining compensating light chromaticity coordinates according to the second of the embodiment of the present application; And

Figure 15 is the schematic diagram optionally determining compensating light chromaticity coordinates according to the third of the embodiment of the present application.

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 instructions 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 process flow diagram 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 embodiment of the present application.As shown in Figure 1, this equipment can comprise: the first light-emitting device 10, second light-emitting device 30 and the first light converge device 40.

Wherein, the first light-emitting device 10, for sending near infrared light.

Second light-emitting device 30, for sending compensating light.

First light converges device 40, is arranged on the meet of the emitting light path of the first light-emitting device and the second light-emitting device, and for outgoing target light, near infrared light and compensating light to converge in device mirror each other at the first light.

Above-mentioned 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 light-emitting device sends and the compensating light that the second light-emitting device sends can converge device place at the first light and 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 matters 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 near infrared shortwave (780-1100nm) and near infrared long wave (1100-2526nm) two regions traditionally.

The number of the first light-emitting device in the above-described embodiments can be one or more, and the number of the second light-emitting device also can be one or more; If the second light-emitting device 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 light-emitting device sends sends with the second light-emitting device mixes and generates target light.

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

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.

Pass through above-described embodiment, adopt the first light to converge near infrared light that the first light-emitting device and the second light-emitting device send by device and compensate photosynthetic mode, thus avoid parallax harmful effect in the red process of exposing to the sun of elimination, achieve the red effect of exposing to the sun of parallax free elimination.

Wherein, parallax is a kind of vision or optical phenomena.When two different target objects have different positions in space, be in different positions by the picture after optical system in observer's eye or on imaging surface, be then called that two objects exist parallax.In the embodiment of the present application, parallax is near infrared light spatially and compensates the phenomenon that coloured light still has the minute differences of position in mixing, if observer is enough close, still likely see different color distribution, thus red effect of exposing to the sun is eliminated in impact.

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

First light-emitting device (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 light-emitting device (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 light-emitting device (red light source).

Light sensitivity-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 maximal value 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 light sensitivity 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 light-emitting device to send and the first light-emitting device send is mixed to form target light (non-ruddiness) and can reaches and eliminate red effect of exposing to the sun.

In above-described embodiment of the application, as shown in Figure 3, light source can also comprise transmitter 50, and this transmitter 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 light-emitting device sends.

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

Light emitting devices 55, launches compensating light for output power second light-emitting device according to compensating light.

By adopting above-described embodiment, after the first light-emitting device 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 output power of this near infrared light, thus determine the output power of compensating light, and this information is sent to light emitting devices, finally, light emitting devices can control the second light-emitting device and launch the compensating light determining output power, 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, output power n the order of magnitude lower than the output power 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 output power ten thousand/or 100,000/ scope in can realize mixing with this near infrared light the effect generating target light, also be, 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 the above-described embodiments, the first illuminator device and the second light-emitting device comprise LED chip.

The power difference of the infrared light that the LED chip in the compensating light sent due to the LED chip in the second light-emitting device and the first illuminator device sends 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 driving circuit therefore will be adopted effectively to control LED chip.

The light source of the present embodiment also comprises one or more driving circuit, and every road driving circuit is for driving a LED chip, and every road driving circuit comprises: photosensitive device, processor, driving chip and amplifying circuit.

Wherein, photosensitive device, for detecting the light intensity signal of LED chip; Processor, is connected with amplifying circuit, for receiving the light intensity signal after amplification and pulse signal, and generates control signal according to light intensity signal and pulse signal; Driving chip, is connected with processor, and for generating drive current under the triggering of control signal, LED chip is luminous under the driving of drive current; Amplifying circuit, is connected with photosensitive device, for amplify light intensity signal be amplified after light intensity signal.

Below in conjunction with Fig. 4, Fig. 5 and Fig. 6, driving circuit is introduced.

The circuit that a kind of single LED as shown in Figure 4 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 4, by utilizing, integrated drive chips (i.e. processor and driving chip) 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. photosensitive device) can realize the controlling functions that drives the constant current of LED chip (i.e. the first diode D1).The input end of this single LED driving 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 4, 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 5, 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 synchro control.In the circuit shown in Fig. 5, comprise Micro-processor MCV (i.e. processor 62), driving chip 63, LED luminescence chip D.Wherein, processor MCU (i.e. processor 62) is electrically connected with driving chip 63, and driving chip 63 is electrically connected with LED luminescence chip D.

Particularly, 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.Photosensitive 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 light-sensitive surface of photosensitive 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 photosensitive 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 comparer of MCU inside is used for the difference of more current simulating signal 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 dutycycle 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 be adjusted independently, thus ensure that the stable of whole system output light intensity and color.

Driving circuit as shown in Figure 6, adds amplifying circuit 64 and photosensitive device 61 compared with the driving circuit shown in Fig. 5.In the circuit shown in Fig. 6, comprise processor MCU, driving chip, LED luminescence chip, amplifying circuit, and photosensitive device.Wherein, processor MCU is electrically connected with driving chip, and driving chip is electrically connected with LED luminescence chip.Processor MCU is also electrically connected with amplifying circuit, and amplifying circuit and photosensitive device 61 are electrically connected.Wherein, amplifying circuit is electrically connected with processor MCU, and the signal of photosensitive device 61 is by becoming a simulating signal and inputting the A/D port of MCU after amplifying circuit.The precision of process can be improved like this, realize the adjustment independently 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 synchro control.

The first light-emitting device in embodiment as shown in Figure 7 can comprise: the first illuminator 11 and lens 12, and wherein, lens are arranged on the emitting light path of the first corresponding illuminator.

As shown in Figure 7, first light-emitting device 10 and the second light-emitting device 30 converge device 40 in mirror relative to the first light respectively, the near infrared light that first light-emitting device sends is mutually vertical with the light path of the compensating light that the second light-emitting device sends, and two-beam is intersected in the first light converges device place place.Two-beam converges after device converges through the first light, and form light beam, this Shu Guang is near infrared light and the mixed target light generated of compensating light, enters follow-up optical system afterwards and does further process.

Alternatively, the first illuminator in the above-described embodiments can be multiple, and lens can be multiple, and the first light-emitting device can also comprise: the second light converges device, second light converges device and is arranged in the emitting light path of corresponding lens, for converging the emergent light of lens.

Alternatively, the second light-emitting device in above-described embodiment can comprise: the second illuminator 31 and lens 32, and wherein, lens 32 can be arranged on the emitting light path of the second corresponding illuminator 31.

Pass through above-described embodiment, the near infrared light that one or more first illuminator sends can through lens (as, collimation lens) after collimation, form the light beam that a branch of dispersion angle is less, thus realize the effect assembling the near infrared light that collimation first illuminator sends.Equally, the compensating light that the second illuminator sends also can through lens to realize the effect of the collimation of compensating light outgoing beam.

Alternatively, the second illuminator in above-described embodiment can comprise blue-light-emitting device, green emitting device and blue-green illuminator.

Particularly, second illuminator can be multiple (comprising blue-light-emitting device, green emitting device and blue-green illuminator), multiple second illuminator with different colours emergent light is utilized to combine with the first illuminator respectively, the near infrared light that the compensating light (blue light, green glow and blue green light) of the different colours sent by the second illuminator sends with the first illuminator respectively carries out mixing and generates target light, thus realizes eliminating red object of exposing to the sun.

Alternatively, the second light-emitting device can comprise multiple second illuminator, multiple second illuminator laid out in parallel; The lens matched with the second illuminator, are arranged on the emitting light path of the second illuminator; First light converges device and comprises: multiple light converges sub-device, and each light converges the meet that sub-device is arranged on the emitting light path of lens and the first light-emitting device.

As shown in Figure 8, first light-emitting device 10 comprises one first illuminator 11 (the infrared LED lamp as in Fig. 8) and lens 12 (collimation lens as in Fig. 8), first light converges device and comprises light and converge sub-device 41 and light converges sub-device 42, second light-emitting device 30 comprises two the second illuminators and two lens, is respectively the second illuminator 31 and the second illuminator 33 and lens 32 and lens 34.In the device shown in Fig. 8, the near infrared light beam sent by the first illuminator 11, after lens 12 (i.e. collimation lens) collimation, forms the light beam that a branch of dispersion angle is less.Be set side by side with multiple light in the direction (namely in the front of collimation lens) of the first light-emitting device emitting light path and converge sub-device, as shown in Figure 8, multiple light converges sub-device and comprises light and converge sub-device 41 and light converges sub-device 42, and each light converges the meet that sub-device is arranged at the emitting light path of the first light emitting devices emitting light path and second illuminator (second illuminator 31 or the second optical transmitting set 33) and lens (lens 32 or lens 34).

Wherein, the near infrared light that first illuminator 11 sends is after lens 12 collimate, compensating light after lens 32 collimate that the near infrared light of outgoing first sends with the second illuminator 31 (as, green glow) converge the mixing of sub-device 41 place at light, compensating light after lens 34 collimate that the near infrared light generated and the mixed light of green glow send with the second illuminator 33 again (as, blue light) converge the mixing of sub-device 42 place at light, generate the mixed light of near infrared, green glow and blue light, this mixed light generates the target light (e.g., white light) visually not causing red phenomenon of exposing to the sun.Through mixing generate without red target light of exposing to the sun through follow-up optical system, the functions such as specific illumination can be realized.

Pass through above-described embodiment, multiple compensating lights that the near infrared light adopting the first illuminator to send and multiple second illuminator send are respectively through after collimated, converge sub-device place at multiple light respectively to converge, final generation is visually without the target light of red phenomenon of exposing to the sun, and multiple compensation light beams that the near infrared light beam sent due to the first illuminator and multiple second illuminator send to converge in sub-device mirror each other at multiple light respectively, thus the red effect of exposing to the sun of the parallax free elimination that can realize arbitrary accuracy.

Alternatively, the second illuminator in the above-described embodiments can comprise: at least one in blue-light-emitting device, green emitting device and blue-green illuminator.

In the above-described embodiments, the second illuminator can comprise two or more illuminators, can be at least one in blue-light-emitting device, green emitting device and blue-green illuminator respectively.Thus can realize utilizing the hybrid plan of multiple compensating light to obtain, without red target light of exposing to the sun, reaching and preventing red effect of exposing to the sun.

Alternatively, the first light in above-described embodiment converges device and can comprise: spectroscope, at least one of closing in light microscopic and optical filter.

Particularly, light in Fig. 8 converge sub-device can for spectroscope, close in light microscopic and optical filter one of at least, sub-device is converged for spectroscope for light, first illuminator in Fig. 8 (as, infrared LED lamp) light beam that sends, after collimation lens collimation, form the light beam that a branch of dispersion angle is less.Red/green spectroscope is laid at angle at 45 °, the front of collimation lens.Because beam splitting lens have through the ruddiness of long wavelength and infrared light and reflects short wave green/feature of blue light, so the change of the direction of propagation directly can not be there is through spectroscope in the near infrared light that the first illuminator sends.Second illuminator can comprise green emitting device (green LED light source), the compensating light (i.e. green glow) that this green emitting device sends, this compensating light (i.e. green glow) is also forming the less compensation light beam (i.e. blue beam) of a beam divergence angle after collimation lens, this compensation light beam is vertical with infrared beam, also be incide on red/green spectroscope with 45° angle simultaneously, and by this dichroic mirror, thus 90 ° of directions of turning back, and be combined into a branch of completely with infrared beam.This bundle mixed light, again through an indigo plant/green spectroscope, after closing bundle in an identical manner, is formed a branch of visually without the target light (e.g., white or subalbous without red exposure) of red phenomenon of exposing to the sun with the light beam of blueness.Wherein, indigo plant/green spectroscopical feature be through longer wavelength infrared/ruddiness and green glow, but the blue light that reflection wavelength is shorter.After closing bundle visually without red target light of exposing to the sun through follow-up optical system, the functions such as specific illumination can be realized.Because near infrared light and two compensate light beam (green glow and blue light) mirror each other in spectroscope, thus can realize the effect of the parallax free red exposure that disappears of arbitrary accuracy.

If the second light-emitting device only comprises second illuminator, namely only generate target light with the near infrared light mixing that a kind of compensating light and the first light-emitting device send to realize eliminating red phenomenon of exposing to the sun, then can adopt light path as shown in Figure 7, basic implementation is close with Fig. 8, just near infrared light only needs to converge device place with a kind of compensating light of color at the first light and mixes, and has namely lacked the synthesis of the compensation light beam that route second illuminator sends.In addition, the compensating light that the second illuminator of three or more also can be used to send three kinds or more colors realizes eliminating red exposing to the sun, now, only need to increase corresponding second illuminator (i.e. compensating light light source), lens and spectroscope in the optical path can realize.Wherein, the quantity of the second illuminator of increase and lens and spectroscopical quantity match.

By adopting above-described embodiment, compensating coloured light can be realized in the process of secondary light-distribution by independent optical paths, thus reaches the red effect of exposing to the sun of parallax free elimination.

In an optional embodiment, as shown in Figure 9, light source can also comprise: optical sensor 91 and processor 93.

Wherein, optical sensor 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 91 acquisition, and read the second color parameter of target light from storer, 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 storer, 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, each 3rd color parameter is for representing a kind of compensating light of color, 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 coordinate, then above-described embodiment can be achieved by the following scheme: after the near infrared light that sensor 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 coordinate 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 10, processor 93 can comprise: reading device 94, some determining device 95 and and parameter determining device 96.

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

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 storer; 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 storer; 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 coordinate) 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 coordinate
			(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 11, 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 color space chromacity diagram as shown in figure 12, in Figure 12, 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 12, 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 12 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 point 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, select 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, as: adopt near infrared light and blue green light to carry out the mode mixed.

Particularly, if be thirdly one, namely when compensating light is a kind of color, and suppose that target light is now white light, also be, the compensating light of near infrared light and a color to be mixed into white target light, as shown in figure 13, 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 13) of the first chromaticity coordinates (i.e. the first color parameter) corresponding chromatic diagram and the second point (the E point as in Figure 13) 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 13), as shown in figure 13, 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 coordinate (i.e. the 3rd color parameter), because the trichromatic coordinate (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 coordinate (i.e. the 3rd color parameter), if there is this trichromatic coordinate in chromaticity coordinates table, compensating light corresponding to this trichromatic coordinate (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 14, 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 14) of the first chromaticity coordinates (i.e. the first color parameter) corresponding chromatic diagram and the second point (the E point as in Figure 14) 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 14) that summit is determined, in embodiment as shown in figure 14, 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.

Particularly, 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 be, the compensating light of near infrared light and multiple color to be mixed into white target light, as shown in figure 15, 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 12) of the first chromaticity coordinates (i.e. the first color parameter) corresponding chromatic diagram and the second point (the E point as in Figure 12) 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 15 is thirdly four, namely the G1 point in Figure 15, G2 point, G3 point and G4 point) convex polygon (not using this convex polygon of label character in Figure 15) determined for summit, it is inner that second point (E point) is as shown in figure 15 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 coordinate (i.e. the 3rd color parameter), because the set of the trichromatic coordinate (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 coordinate detected in the set of this trichromatic coordinate is all present in chromaticity coordinates table, if each trichromatic coordinate in the set of this trichromatic coordinate (i.e. the 3rd color parameter) is all present in chromaticity coordinates table, the compensating light of the set correspondence of this trichromatic coordinate (i.e. the 3rd color parameter) then can be used to compensate near infrared light.

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, after obtaining the near infrared light after filtering, then obtain the first color parameter of near infrared light after filtering and the second color parameter of target light by processor.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 at 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 color mixture 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 embodiment of the present application 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 production marketing independently 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, ROM (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 domain of the application.And aforesaid storage medium comprises: USB flash disk, ROM (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 domain of the application.

Claims

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

First light-emitting device, for sending near infrared light;

Second light-emitting device, for sending compensating light,

First light converges device, is arranged on the meet of the emitting light path of described first light-emitting device and described second light-emitting device, and for outgoing target light, described near infrared light and described compensating light to converge in device mirror each other at described first light,

Wherein, described compensating light and described near infrared light are mixed to form described target light, and described target light is non-ruddiness.

2. light source according to claim 1, is characterized in that, described first light-emitting device comprises:

First illuminator;

Lens, described lens are arranged on the emitting light path of described first illuminator.

3. light source according to claim 2, is characterized in that, described first illuminator is multiple, and described lens are multiple, and the quantity of described first illuminator and the quantity of described lens match, and described first light-emitting device also comprises:

Second light converges device, is arranged in the emitting light path of corresponding described lens, for converging the emergent light of described lens.

4. light source according to claim 1, is characterized in that, described second light-emitting device comprises:

Second illuminator;

Lens, described lens are arranged on the emitting light path of described second illuminator.

5. light source according to claim 4, is characterized in that, described second illuminator comprises: blue-light-emitting device, green emitting device and blue-green illuminator.

6. light source according to claim 1, is characterized in that, described second light-emitting device comprises:

Multiple second illuminator, described multiple second illuminator laid out in parallel;

The lens matched with described second illuminator, are arranged on the emitting light path of described second illuminator;

Described first light converges device and comprises: multiple light converges sub-device, and each described light converges the meet that sub-device is arranged on the emitting light path of described lens and described first light-emitting device.

7. light source according to claim 6, is characterized in that, described second illuminator comprises: at least one in blue-light-emitting device, green emitting device and blue-green illuminator.

8. light source as claimed in any of claims 1 to 7, is characterized in that, described first light converges device and comprises: spectroscope, at least one of closing in light microscopic and optical filter.

9. light source according to claim 2, is characterized in that, described first illuminator device and described second light-emitting device comprise LED chip.

10. light source according to claim 9, is characterized in that, described light source also comprises:

One or more driving circuit, driving circuit described in every road is for driving a described LED chip, and described in every road, driving circuit comprises:

Photosensitive device, for detecting the light intensity signal of described LED chip;

Amplifying circuit, is connected with described photosensitive device, for amplify described light intensity signal be amplified after light intensity signal;

Processor, is connected with described amplifying circuit, for receiving the light intensity signal after described amplification and pulse signal, and generates control signal according to described light intensity signal and pulse signal;

Driving chip, is connected with described processor, and for generating drive current under the triggering of described control signal, described LED chip is luminous under the driving of described drive current.

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

Optical sensor, for obtaining the described near infrared light that described first light-emitting device sends;

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

Light emitting devices, launches described compensating light for the second light-emitting device described in the output power according to described compensating light.

12. light sources according to claim 11, is characterized in that, output power n the order of magnitude lower than the output power of described near infrared light of described compensating light, wherein, and n≤4 or 5.

13. 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.

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