CN103791240A - Intelligent laser shadowless lighting system for medical treatment - Google Patents
Intelligent laser shadowless lighting system for medical treatment Download PDFInfo
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- CN103791240A CN103791240A CN201410053197.5A CN201410053197A CN103791240A CN 103791240 A CN103791240 A CN 103791240A CN 201410053197 A CN201410053197 A CN 201410053197A CN 103791240 A CN103791240 A CN 103791240A
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Abstract
The invention relates to an intelligent laser shadoless lighting system for medical treatment. The intelligent laser shadowless lighting system comprises an optical lighting unit, an optical lighting detecting unit, a mechanical unit and an electric control unit. The optical lighting unit comprises a fixed light source set and a compensation light source set. The optical lighting detecting unit comprises a monitoring camera and an image processing module. The mechanical unit comprises a light body, a stand column and a swing arm unit. The electric control unit comprises a shooting module, a computer control module and a light source drive module. Shadowless lighting is achieved through intelligent compensation of a lighting detecting system, the effects that illumination is evenly distributed, no shadow exists, and the illumination and color temperature are adjustable continuously are achieved. The problem that intelligent adjustment can not be achieved according to the visual characteristic of the eyes is solved, and the problem that an operation doctor works for a long time, visual fatigue is generated is solved, so that operation quality is effectively improved.
Description
Technical field
The present invention relates to shadowless lighting, relate in particular to a kind of medical Intelligent Laser shadowless lighting system that more superior operation illuminating effect is provided.
Background technology
Operation shadowless lamp is for the indispensable visual plant of the surgical site that throws light on, and the low object of different depth, size and contrast in otch and cavity can be clearly observed in requirement.Because operation Shi doctor's head, hand and apparatus all may cause interference shade to operative site, and color distortion is dropped to minimum level.Meanwhile, also continuous firing and keep low-temperature condition for a long time of shadowless lamp.
International, domestic at present have a lot of research about operation shadowless lamp and diagnosis illumination, great power LED has been successfully applied to the aspect such as surgery operating lamp, medical examination, although it is non-adjustable that existing product preferably resolves the colour temperature of traditional medical lighting engineering existence, the more high limitation problem of temperature rise, also the problems such as encapsulation, constant current driving, heat radiation and the illumination control of great power LED have successfully been solved technically, can realize the Multi-regulation of shadowless lamp illumination, light modulation is flexible, convenient, but still it is adjustable to realize intelligence according to human-eye visual characteristic.If the operating time is long, cannot realize optimal illumination to the surface of a wound, make clinician occur visual fatigue, produce presbyopia phenomenon, exert an influence for operation and diagnosis.
In view of above-mentioned defect, creator of the present invention has obtained this creation finally through long research and practice.
Summary of the invention
The object of the present invention is to provide a kind of medical Intelligent Laser shadowless lighting system, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the invention provides a kind of medical Intelligent Laser shadowless lighting system, it comprises illumination optical unit, illumination optical detecting unit, machine assembly and electric control unit, wherein,
Described illumination optical unit comprises fixed light source group and compensatory light group, and described fixed light source group evenly projects on working face the light of light source outgoing, and realizes higher without shadow degree; The effect of described compensatory light group is in the time having shelter, makes the indexs such as the shadow region brightness, colour temperature, colour rendering at compensation work face place reach the best visual effect;
Described illumination optical detecting unit comprises CCTV camera and image processing module, described illumination optical detecting unit catches the variation of the brightness of working face place and colour temperature by described CCTV camera, by described pattern process module, the picture collecting is analyzed, determine the brightness at working face place, the light source of controlling described compensatory light group zones of different carries out luminance compensation, and then realizes the closed-loop control of working face place brightness uniformity;
Described machine assembly comprises lamp body, column and swing arm unit, and described illumination optical unit and illumination optical detecting unit are set on described lamp body, lamp body and swing arm unit described in described upright supports, and lamp body is done multi-angle rotary motion described in described swing arm unit control;
Described electric control unit comprises photographing module, computer control module and light source driver module, and described photographing module catches image video signal; The effect of described computer control module is by simple computation interface, system to be controlled; The effect of described light source driver module is driving LED light source, changes the output of LED light and reaches uniform-illumination distribution, shadow-free.
Further, described fixed light source group comprises 81 little LED Lamp cups, and determine according to Lamp cup present position at the angle of inclination of each Lamp cup;
The light source of described compensatory light group is divided into different regions, different according to the angle of inclination of the characteristic light fixture in different light fillings region;
Described illumination optical detecting unit is positioned at the marginal position of opticator, divides equally testing face region.
Further, described fixed light source group comprises fixed light source and fixation reflex Lamp cup, and the rim of a cup diameter of described reverberation cup is 40mm, and the reflector angle of emergence is 13.7 °, and quadratic curvature is-1.6, and radius of curvature is 38mm.
Wherein, according to formula (1), radiation of light source luminous flux is calculated,
φ=p*η*n (1)
Wherein: the power output that p is single source,
η is the light efficiency of 3WLED light source, η=98,
N is the number of fixed light source group fixed light source, n=81.
Be φ=18954lm through the output light flux that calculates light source;
Calculate fixed light source and project the luminous flux at working face place according to formula (2),
φ
2=φ*σ
1*σ
2 (2)
Wherein: σ
1for the angle utilization rate of LED light source, by analysis, calculate, design, σ
1=0.5, σ
2for the light efficiency utilization rate of light fixture, determine σ through optical design
2=0.4,
Be φ through the output light flux that calculates light source
2=3791lm;
Calculate fixed light source and project the luminous flux at working face place according to formula (3),
E=φ
2/S (3)
Wherein: φ
2the luminous flux receiving for working face place;
S be working face area, working face size for diameter be 200mm～600mm;
Be 1.3 ten thousand lx～120,000 lx through calculating receiving plane place illumination range.
Further, described compensatory light group comprises 36 compensatory lights of the same race, and compensatory light comprises compensatory light, compensatory reflex Lamp cup two parts composition, and wherein: described reflector diameter is 40mm, quadratic curvature is-1.1, and radius of curvature is 37mm.
Further, described illumination optical detecting unit adopts four described CCTV cameras, working face is divided into a region, the diameter in each region is 70mm, detecting video camera is 1m apart from the distance at working face place, and the monitoring visual field that above-mentioned size calculates CCTV camera is 8 degree, and described CCTV camera collects receiving plane place illumination precision for eliminating, before video camera, add the optical filter that a slice conforms to light fixture output spectrum, so that the acquisition precision of video camera to be provided; The picture collecting is transferred to image processing module by CCTV camera, and it is controlled compensatory light according to the characteristic that collects image.
Further, described column comprises adjusts pipe and supervisor, and described swing arm unit comprises turning arm, crossbeam and counter-jib, and the two ends of described turning arm are connected to respectively the rear and front end of described lamp body; One end of described crossbeam is connected to the outside, center of described turning arm, and the other end of described crossbeam is connected with the side of described counter-jib, and described adjustment pipe is connected between described counter-jib and supervisor; Described base is arranged on described supervisor's bottom, to support whole mechanical part.
Further, described supervisor is directly installed on base, is fixed by holding screw; It is upper that described adjustment pipe is arranged on supervisor by holding screw, and the top of described adjustment pipe is connected with counter-jib.
Further,
Described swing arm unit, there is rotary joint lamp body and turning arm junction, can relatively rotate 35 ° take lamp body diameter as rotating shaft; There is cradle head turning arm and crossbeam junction, can relatively rotate 150 ° around crossbeam axis; Crossbeam rotates around described column, Rotate 180 ° centered by the axis of column; Each rotary joint has damper, adjusts corresponding locking knob, changes the damping force that rotate in lamp body and each joint.
Further, described lamp body comprises handle, main light source group and compensation LED, the total group of whole shadowless lamp high brightness White LED fixed light source, and every group is made up of 9 LED lamps; More even for medical Intelligent Laser shadowless lamp illumination is distributed, be provided with in addition 36 great power LED compensatory lights; Be provided with air-cooling device and heat dissipation channel at lamp body top, lamp body is carried out to heat convection.
Further, described photographing module comprises four video cameras, and described computer control module comprises industrial computer, display, four road video frequency collection cards and road analog output card; Described light source driver module comprises the LED light source adjustment module that 0-10V analog signal is adjustable.
Beneficial effect of the present invention is compared with prior art: the innovative technologies such as the present invention medical treatment Intelligent Laser shadowless lighting system aggregation closes the intelligence of human-eye visual characteristic can conditioning technology, shooting Closed loop Control, laser dot-matrix developing technology, laser dot-matrix combination illumination technology, heat dissipation technology, driving power, voltage-stablizer and control technology are integrated; Realize by adopting video sensor technology to realize the closed-loop control of system, realized colour temperature, illumination, high accuracy accurately adjustable, colour temperature, illumination stability are guaranteed; Visual characteristic in conjunction with clinician's human eye realizes intelligent control technology; Intelligent compensation by illumination detection system solves shadowless lighting problem, can realize uniform-illumination distribution, shadow-free, illumination and colour temperature adjustable continuously.Break through and cannot realize the adjustable problem of intelligence according to human-eye visual characteristic, solved the visual fatigue problem that operative doctor works long hours, thereby effectively improved operation quality.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the present invention's medical treatment Intelligent Laser shadowless lighting system;
Fig. 2 is the present invention's medical treatment Intelligent Laser shadowless lighting system optics part plane structure chart;
Fig. 3 is the structural representation of fixed light source group of the present invention;
Fig. 4 is the structural representation of mechanical part of the present invention;
Fig. 5 is the structural representation of lamp body of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, technical characterictic and the advantage with other above-mentioned to the present invention are described in more detail.
When the present invention medical treatment Intelligent Laser shadowless lighting system works, catch image video signal by video camera, and be stored in and in industrial computer, carry out analyzing and processing.Analog output card will be exported optical analog data after treatment, convert analog signal to and pass to controllable LED constant-current source.Make working region colour temperature, illumination, more stable by the output of LED constant-current source, realized simultaneously colour temperature, illumination, field of illumination on a large scale, high accuracy is accurately adjustable, reach optimum visual, illuminating effect.
Refer to shown in Fig. 1 its functional block diagram for the present invention's medical treatment Intelligent Laser shadowless lighting system, this system comprises illumination optical unit 11, illumination optical detecting unit 12, machine assembly 13 and electric control unit 14,
Wherein, described illumination optical unit 11 comprises fixed light source group 111 and compensatory light group 112, and the effect of described fixed light source group 111 is that the light of realizing LED light source outgoing evenly projects on working face, and realizes higher without shadow degree; The effect of described compensatory light group is in the time having shelter, makes the indexs such as the shadow region brightness, colour temperature, colour rendering at compensation work face place reach the best visual effect.
Described illumination optical detecting unit 12 comprises CCTV camera 121 and image processing module 122, described illumination optical detecting unit 12 catches the variation of the brightness of working face place and colour temperature by described CCTV camera 121, by described pattern process module 122, the picture collecting is analyzed, determine the brightness at working face place, the light source of controlling described compensatory light group 112 zoness of different carries out luminance compensation, and then realizes the closed-loop control of working face place brightness uniformity.
Refer to shown in Fig. 2, it is the present invention's medical treatment Intelligent Laser shadowless lighting system optics part plane structure chart,
In the present embodiment, described fixed light source group 111 comprises 81 little LED Lamp cups, and determine according to Lamp cup present position at the angle of inclination of each Lamp cup; The light source of described compensatory light group 112 is divided into different regions, different according to the angle of inclination of the characteristic light fixture in different light fillings region.Described illumination optical detecting unit 12 is positioned at the marginal position of opticator, divides equally testing face region.
In use procedure, doctor clicks light source output class according to the variety classes of operation, and fixed light source group controller, according to the colour temperature of instruction control fixed light source group, is realized best operation color developing effect to reach.In doctor's surgical procedure, the shade that illumination detecting unit 12 detects doctor's part limbs and the device of performing the operation blocks, it carries out analyzing and processing to gathering image, determine that light filling needs position and the light filling amplitude of light filling, the compensatory light of controlling relevant position carries out light filling with the light filling speed relatively relaxing to shade.Occurring that significantly bright, the dark and obvious colour rendering of illumination place changes to doctor's vision causes impact very greatly.
Refer to shown in Fig. 3, its structural representation that is fixed light source group of the present invention, in the present invention, described fixed light source group comprises fixed light source and fixation reflex Lamp cup, the rim of a cup diameter of described reverberation cup is 40mm, the reflector angle of emergence is 13.7 °, and quadratic curvature is-1.6, and radius of curvature is 38mm.
Wherein light source is selected Ou Silang 3W LED light source, light efficiency parameter: 78Lm/W, and colour temperature is 6500K, colour rendering 80 is calculated radiation of light source luminous flux according to formula (1),
φ=p*η*n (1)
Wherein: the power output that p is single source,
η is the light efficiency of 3W LED light source, η=98,
N is the number of fixed light source group fixed light source, n=81.
Be φ=18954lm through the output light flux that calculates light source.
Calculate fixed light source and project the luminous flux at working face place according to formula (2),
φ
2=φ*σ
1*σ
2 (2)
Wherein: σ
1for the angle utilization rate of LED light source, by analysis, calculate, design, σ
1=0.5,
σ
2for the light efficiency utilization rate of light fixture, determine σ through optical design
2=0.4,
Be φ through the output light flux that calculates light source
2=3791lm.
Calculate fixed light source and project the luminous flux at working face place according to formula (3),
E=φ
2/S (3)
Wherein: φ
2the luminous flux receiving for working face place.
S be working face area, working face size for diameter be 200mm～600mm.
Be 1.3 ten thousand lx～120,000 lx through calculating receiving plane place illumination range, meet design objective requirement through the illuminance of calculating receiving plane place.Calculating light source output face temperature is 33 ℃.
Described compensatory light group 112 comprises 36 compensatory lights of the same race, and compensatory light is made up of compensatory light, compensatory reflex Lamp cup two parts, and structure chart as shown in Figure 4.Through calculating, analyzing.Last compensatory light design result is: reflector diameter is 40mm, and quadratic curvature is-1.1, and radius of curvature is 37mm.
Choosing of light source is to determine according to the illuminance compensation of shade in surgical procedure, in surgical procedure, if hand blocking as diameter phi 70mm of launching to cause, the illumination of reception place is 0lx, due to the light filling optical characteristics of compensatory light, the shooting angle of compensatory light is very little, and light collimation is high.Receiving plane is divided into 4 regions by the present invention, and each region has 9 light sources to carry out light filling.The light source that we adopt is Ou Silang 5W LED light source, light efficiency parameter: 78Lm/W, and colour temperature is 4300K～7000K, colour rendering 75～80.The output light flux that calculates 9 LED light sources according to above-mentioned formula (1) is 3510lm, calculating according to formula (2) luminous flux that projects to compensatory zone is 702lm, the illumination that calculates the rear shadow region of compensation according to formula (3) is 18.2 ten thousand lx, consider that shelter also blocks compensatory light, shelter is 0.2 to the coefficient that blocks of compensatory light, and the illumination that calculates the rear shaded side of compensation is 3.64 ten thousand lx.Detection system, according to the illumination of the image detection shaded side collecting, realizes the even of working face place distribution of light by number and the power of controlling light compensating lamp.
Described illumination optical detecting unit 12 adopts four described CCTV cameras 121, working face is divided into 4 regions, the diameter in each region is 70mm, detecting video camera is 1m apart from the distance at working face place, the monitoring visual field that calculates CCTV camera according to above-mentioned size is 8 degree, CCTV camera 121 collects receiving plane place illumination precision for eliminating, and adds the optical filter that a slice conforms to light fixture output spectrum, so that the acquisition precision of video camera to be provided before video camera.The picture collecting is transferred to image processing module 122 by CCTV camera 121, and it is controlled compensatory light according to the characteristic that collects image.
Described CCTV camera 121, adopt 752*582 resolution ratio video camera, minimal illumination detects 0.001lx, utilize illumination to take into account standard sources video camera is carried out to irradiance calibration, illumination photometer precision is 2.5%, video camera self error 3.5%, standard sources output accuracy is 3%, the overall display precision of illumination is 9%.
Refer to shown in Fig. 4, its structural representation that is mechanical part of the present invention, it comprises camera head 1, operation panel 2, lamp body 3, turning arm 4, crossbeam 5, counter-jib 6, adjusts pipe 7, supervisor 8 and base 9, described adjustment pipe 7 and supervisor 8 form column, and turning arm 4, crossbeam 5 and counter-jib 6 form swing arm unit.
Described camera head 1 is arranged on the front end of described lamp body 3, and described operation panel 2 is arranged on the upper end of described lamp body 3; The two ends of described turning arm 4 are connected to respectively the rear and front end of described lamp body 3; One end of described crossbeam 5 is connected to the outside, center of described turning arm 4, and the other end of described crossbeam 5 is connected with the side of described counter-jib 6, and described adjustment pipe is connected between described counter-jib 6 and supervisor 8; Described base 9 is arranged on described supervisor's 8 bottom, to support whole mechanical part.
Thereby described lamp body 3 makes the shooting angle of multi-angle change light source, the flexibility that has greatly improved surgical apparatus; Turning arm 4 one sides are connected with lamp body 3, and opposite side is connected with crossbeam 5, and whole turning arm 4 is adjusted freely, stablized, delicate structure, can adjust differing heights and angle meets requirements of operation.Described adjustment pipe 7 and supervisor 8, play the effect of supporting lamp body.
Described supervisor 8 is directly installed on base 9, is fixed by holding screw; Described adjustment pipe 7 is arranged on supervisor 8 by holding screw, and the top of described adjustment pipe 7 is connected with counter-jib 6.Described column had both played the effect of supporting lamp body, played away again the effect of spool, and power supply and control circuit pass therethrough with lamp body and be connected.Column adopts subsection connecting structure to be both convenient to transportation, is convenient to again circuit and connects and maintenance.
Described swing arm unit, lamp body 3 has rotary joint with turning arm 4 junctions, can relatively rotate 35 ° take lamp body 3 diameters as rotating shaft; Turning arm 4 also has cradle head with crossbeam 5 junctions, can relatively rotate 150 ° around crossbeam 5 axis; Crossbeam 5 can be around described column rotation, Rotate 180 ° centered by the axis of column; Each rotary joint has damper, adjusts corresponding locking knob, can change the damping force that rotate in lamp body and each joint.Adjust the damper on counter-jib 6, can change the damping force that lamp body 3 moves up and down, lamp body is moved lightly, positioning stablity; Damper is to provide the resistance of motion, the device of depletion kinergety.In the time of two connector rotation low speed, allow to relatively rotate, play the effect of buffer shock-absorbing; Locking in the time that speed or acceleration exceed corresponding value, forms rigid support; Therefore damper can guarantee to operate steadily reliably unexpectedly, plays again the effect of safety lock; Whole rocking arm adjustment freely, stable, delicate structure, met the needs of differing heights and angle in operation.
Described base 9 comprises bearing, protective cover and roller devices, and all component weight of described shadowless lighting system are born by base 9, Gu base should have certain intensity, and need guarantee the stability of whole shadowless lamp; Described roller devices is at rest base, can Free-rolling; Roller devices and lamp socket junction are capable of regulating roller height, and making to adjust pipe 7 and supervisor's 8 axis is that plumb line is to guarantee that lamp body steadily moves freely; Protective cover, below base, has guaranteed again that in playing protective device element medical Intelligent Laser shadowless lamp profile is succinct, attractive in appearance.
Refer to shown in Fig. 5, its structural representation that is lamp body of the present invention, described lamp body 3 comprises handle 41, main light source group 42 and compensation LED 43, and whole shadowless lamp has 9 groups of high brightness White LED fixed light sources, and every group is made up of 9 LED lamps.More even for medical Intelligent Laser shadowless lamp illumination is distributed, be provided with in addition 36 great power LED compensatory lights.For preventing that lamp intimate heat meltdown wiring insulation from causing short circuit, damaging LED light source, be provided with air-cooling device and heat dissipation channel at lamp body top, lamp body is carried out to heat convection, to effectively reduce system thermal resistance, medical Intelligent Laser shadowless lamp is normally worked, guarantee patient safety.
Camera head is arranged on below lamp body, altogether by four camera uniform compositions.Each camera is universal connection with lamp body connection bracket, can freely swing, and to guarantee camera aligning operative site, thereby more approaches operative doctor sensation target.Operative doctor, by adjusting camera angle, makes camera head carry out exactly data acquisition, adjusts to guarantee that medical Intelligent Laser shadowless lamp illuminating effect is intelligent.Control panel is arranged on lamp body cylinder equally, can do 180 ° of rotations around at right angle setting axle.Its direction of operative doctor capable of regulating, operates to facilitate in operation.
Described electric control unit 4 comprises photographing module 41, computer control module 42 and light source driver module 43, and described photographing module 41 catches image video signal; The effect of described computer control module 42 is by simple computation interface, system to be controlled; The effect of described light source driver module 43 is driving LED light sources, changes the output of LED light and reaches uniform-illumination distribution, shadow-free.
Described photographing module 41 comprises four video cameras, and described computer control module 42 comprises industrial computer, display, four video frequency collection card He36 road, road analog output cards; Described light source driver module 43 comprises the LED light source adjustment module that 0-10V analog signal is adjustable.
The present invention adopts the dynamic adjustable mode of DC light source supply current, and the control voltage that computer provides determines its output, and described analog output unit output voltage will have high output resolution ratio, and output resolution ratio is 14 D/A, control range 0～10V.And constant current output module is the adjustable linear power supply of precision DC, realize the stepless adjustment of LINEAR CONTINUOUS.
The operation principle of light filling closed-loop adjustment is to start after normal work at 81 fixed light sources, 4 video cameras are taken pictures, store current picture intensity profile figure as this template, in the time performing the operation, staff or other objects enter camera field of view, now staff or other objects block fixed light source and project the light of operating table, video camera real-time monitoring images grey scale change also compares with template, PC program is by the control of 36 light compensating lamp number consecutivelies, accept respectively the controlled adjustment of 36 road analog output cards, if there is the shadow region of blocking, start to carry out closed-loop control according to optical model PC program.
The effect of 4 road video frequency collection cards is to gather television camera image video signal in the time that test is carried out, and is stored in and in industrial computer, carries out analyzing and processing.The effect of analog output card is by data after treatment process optical model, becomes analog signal and passes to controllable LED constant-current source.
Described video frequency collection card can continuous show, connect the various ways such as frame, several, interval or several frames gathers image; Can stablize receiving video signals, support in uniform machinery, how soon board is worked simultaneously.
Described analog output card is set output voltage: ± 10V, and ± 5V, 0～10V, 0～5V or 4～20mA, 0～20mA fills with current loop.Many output forms provide large selection space for the apolegamy of LED light modulator.Native system, for needing 37 analog output channels, adopts Liang Kuai 16 road analog outputs and 14 road analog output.
Described industrial computer and control accordingly software and form control and the data processing centre of native system, it completes the coordination and control of native system each several part, and operating personnel can, by controlling the UI Preferences parameter of software, send instruction.Utilize corresponding software interface, real-time by the every bit gray count of every width image out, the gray scale resolution chart that when industrial computer is recorded startup, video camera is taken under certain regulation illumination is as template, when follow-up beginning light filling work, calculate the gray value of every bit on image, the relatively gray value of the different gray areas of gray scale resolution chart, utilizes brightness and the colour temperature of 36 light compensating lamps of adjustment that algorithm that optical model is set up can be very fast.
Add the simulation results of shelter by analyzing medical Intelligent Laser shadowless lighting system, it is very many without shadow degree height that medical treatment Intelligent Laser shadowless lighting system is compared single led illuminator, equal shelter shaded area has reduced 35%, and the brightness of shaded side has improved 25%, through comparative analysis, medical Intelligent Laser shadowless lighting system without shadow successful higher than single led light source.
The light filling Illumination Distribution curve comparison that is added shelter, do not add shelter and added shelter by medical Intelligent Laser shadowless lighting system can judge, the light filling successful of medical Intelligent Laser shadowless lighting system.After light filling, the illumination at receiving plane place is the highest can reach 3.64 ten thousand lx more than.
The innovative technologies such as the present invention medical treatment Intelligent Laser shadowless lighting system aggregation closes the intelligence of human-eye visual characteristic can conditioning technology, shooting Closed loop Control, laser dot-matrix developing technology, laser dot-matrix combination illumination technology, heat dissipation technology, driving power, voltage-stablizer and control technology are integrated; Realize by adopting video sensor technology to realize the closed-loop control of system, realized colour temperature, illumination, high accuracy accurately adjustable, colour temperature, illumination stability are guaranteed; Visual characteristic in conjunction with clinician's human eye realizes intelligent control technology; Intelligent compensation by illumination detection system solves shadowless lighting problem, can realize uniform-illumination distribution, shadow-free, illumination and colour temperature adjustable continuously.Break through and cannot realize the adjustable problem of intelligence according to human-eye visual characteristic, solved the visual fatigue problem that operative doctor works long hours, thereby effectively improved operation quality.
The foregoing is only preferred embodiment of the present invention, is only illustrative for invention, and nonrestrictive.Those skilled in the art is understood, and in the spirit and scope that limit, can carry out many changes to it in invention claim, revise, and even equivalence, but all will fall within the scope of protection of the present invention.
Claims (10)
1. a medical Intelligent Laser shadowless lighting system, is characterized in that, it comprises illumination optical unit, illumination optical detecting unit, machine assembly and electric control unit, wherein,
Described illumination optical unit comprises fixed light source group and compensatory light group, and described fixed light source group evenly projects on working face the light of light source outgoing, and realizes higher without shadow degree; The effect of described compensatory light group is in the time having shelter, makes the indexs such as the shadow region brightness, colour temperature, colour rendering at compensation work face place reach the best visual effect;
Described illumination optical detecting unit comprises CCTV camera and image processing module, described illumination optical detecting unit catches the variation of the brightness of working face place and colour temperature by described CCTV camera, by described pattern process module, the picture collecting is analyzed, determine the brightness at working face place, the light source of controlling described compensatory light group zones of different carries out luminance compensation, and then realizes the closed-loop control of working face place brightness uniformity;
Described machine assembly comprises lamp body, column and swing arm unit, and described illumination optical unit and illumination optical detecting unit are set on described lamp body, lamp body and swing arm unit described in described upright supports, and lamp body is done multi-angle rotary motion described in described swing arm unit control;
Described electric control unit comprises photographing module, computer control module and light source driver module, and described photographing module catches image video signal; The effect of described computer control module is by simple computation interface, system to be controlled; The effect of described light source driver module is driving LED light source, changes the output of LED light and reaches uniform-illumination distribution, shadow-free.
2. medical Intelligent Laser shadowless lighting system according to claim 1, is characterized in that, described fixed light source group comprises 81 little LED Lamp cups, and determine according to Lamp cup present position at the angle of inclination of each Lamp cup;
The light source of described compensatory light group is divided into different regions, different according to the angle of inclination of the characteristic light fixture in different light fillings region;
Described illumination optical detecting unit is positioned at the marginal position of opticator, divides equally testing face region.
3. medical Intelligent Laser shadowless lighting system according to claim 2, is characterized in that, described fixed light source group comprises fixed light source and fixation reflex Lamp cup, the rim of a cup diameter of described reverberation cup is 40mm, the reflector angle of emergence is 13.7 °, and quadratic curvature is-1.6, and radius of curvature is 38mm.
Wherein, according to formula (1), radiation of light source luminous flux is calculated,
φ=p*η*n (1)
Wherein: the power output that p is single source,
η is the light efficiency of 3W LED light source, η=98,
N is the number of fixed light source group fixed light source, n=81.
Be φ=18954lm through the output light flux that calculates light source;
Calculate fixed light source and project the luminous flux at working face place according to formula (2),
φ
2=φ*σ
1*σ
2 (2)
Wherein: σ
1for the angle utilization rate of LED light source, by analysis, calculate, design, σ
1=0.5,
σ
2for the light efficiency utilization rate of light fixture, determine σ through optical design
2=0.4,
Be φ through the output light flux that calculates light source
2=3791lm;
Calculate fixed light source and project the luminous flux at working face place according to formula (3),
E=φ
2/S (3)
Wherein: φ
2the luminous flux receiving for working face place;
S be working face area, working face size for diameter be 200mm～600mm;
Be 1.3 ten thousand lx～120,000 lx through calculating receiving plane place illumination range.
4. medical Intelligent Laser shadowless lighting system according to claim 2, it is characterized in that, described compensatory light group comprises 36 compensatory lights of the same race, compensatory light comprises compensatory light, compensatory reflex Lamp cup two parts composition, wherein: described reflector diameter is 40mm, quadratic curvature is-1.1, and radius of curvature is 37mm.
5. medical Intelligent Laser shadowless lighting system according to claim 2, it is characterized in that, described illumination optical detecting unit adopts four described CCTV cameras, working face is divided into a region, the diameter in each region is 70mm, detecting video camera is 1m apart from the distance at working face place, the monitoring visual field that above-mentioned size calculates CCTV camera is 8 degree, described CCTV camera collects receiving plane place illumination precision for eliminating, before video camera, add the optical filter that a slice conforms to light fixture output spectrum, so that the acquisition precision of video camera to be provided; The picture collecting is transferred to image processing module by CCTV camera, and it is controlled compensatory light according to the characteristic that collects image.
6. according to the medical Intelligent Laser shadowless lighting system described in claim 2 or 3, it is characterized in that, described column comprises adjusts pipe and supervisor, and described swing arm unit comprises turning arm, crossbeam and counter-jib, and the two ends of described turning arm are connected to respectively the rear and front end of described lamp body; One end of described crossbeam is connected to the outside, center of described turning arm, and the other end of described crossbeam is connected with the side of described counter-jib, and described adjustment pipe is connected between described counter-jib and supervisor; Described base is arranged on described supervisor's bottom, to support whole mechanical part.
7. medical Intelligent Laser shadowless lighting system according to claim 6, is characterized in that, described supervisor is directly installed on base, is fixed by holding screw; It is upper that described adjustment pipe is arranged on supervisor by holding screw, and the top of described adjustment pipe is connected with counter-jib.
8. medical Intelligent Laser shadowless lighting system according to claim 7, is characterized in that, described swing arm unit, and there is rotary joint lamp body and turning arm junction, can relatively rotate 35 ° take lamp body diameter as rotating shaft; There is cradle head turning arm and crossbeam junction, can relatively rotate 150 ° around crossbeam axis; Crossbeam rotates around described column, Rotate 180 ° centered by the axis of column; Each rotary joint has damper, adjusts corresponding locking knob, changes the damping force that rotate in lamp body and each joint.
9. medical Intelligent Laser shadowless lighting system according to claim 6, is characterized in that, described lamp body comprises handle, main light source group and compensation LED, the total group of whole shadowless lamp high brightness White LED fixed light source, and every group is made up of 9 LED lamps; More even for medical Intelligent Laser shadowless lamp illumination is distributed, be provided with in addition 36 great power LED compensatory lights; Be provided with air-cooling device and heat dissipation channel at lamp body top, lamp body is carried out to heat convection.
10. according to the medical Intelligent Laser shadowless lighting system described in claim 2 or 3, it is characterized in that, described photographing module comprises four video cameras, and described computer control module comprises industrial computer, display, four road video frequency collection cards and road analog output card; Described light source driver module comprises the LED light source adjustment module that 0-10V analog signal is adjustable.
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