CN104068961A - Light brush therapeutic equipment - Google Patents
Light brush therapeutic equipment Download PDFInfo
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- CN104068961A CN104068961A CN201410346156.5A CN201410346156A CN104068961A CN 104068961 A CN104068961 A CN 104068961A CN 201410346156 A CN201410346156 A CN 201410346156A CN 104068961 A CN104068961 A CN 104068961A
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Abstract
The invention provides light brush therapeutic equipment. The equipment comprises a blue optical filter, a polarizing film, a controllable optical rotation component, an eyepiece, and a control device connected with the controllable optical rotation component arranged in sequence, wherein incident light enters from the blue optical filter to obtain polarized light through the polarization film; the polarized light passes through the controllable optical rotation component which controls the polarized light to deflect according to the cyclical control signal output by the control device and then exits from the eyepiece; the polarization direction of the output polarized light rotates or sways in a preset angle range under the function of the control signal. The equipment is simple in structure, low in cost, small in noise, light and handy as well as agile, low in failure rate, and high in regulate and control precision.
Description
Technical field
The present invention relates to optical field, refer in particular to a kind of light brush therapeutic instrument that is applied to ophthalmology amblyopia treatment.
Background technology
Physiology's principle of light brush therapeutic instrument is based on moment Hai Dinggeshi brush effect.Moment Hai Dinggeshi brush effect refers in the time that a therapist eye are watched blue high light attentively by the polaroid of a rotation, can continue to see the image of similar high speed propeller near the center of this eye fixation direction.Moment Hai Dinggeshi brushes effect, and we brush effect referred to as light.Light brush effect only appears on central fovea of macula, because central fovea of macula is the most responsive region of ocular vision.Patient watches an image of seemingly brushing shape or propeller attentively from the eyepiece of light brush therapeutic instrument, this effect only comes across the most responsive macula retinae district of vision, activates macula area pyramidal cell by watching light brush attentively, makes paracentral fixation move to gradually center recess, thereby raising vision, reaches healing object.The therapeutic equipments that principle is made is accordingly exactly light brush therapeutic instrument.The treatment of light brush had both been applicable to the treatment of eyes paracentral fixation amblyopia, was also applicable to the treatment that eyes abnormal retinal is corresponding.
Light brush effect in traditional light brush therapeutic instrument is to rotate a transparent disk of the blueness of posting polaroid being placed in after white light source with mechanical mechanism to realize.This class light brush therapeutic instrument is because using motor to tend to produce larger noise, and because using motion, structure is very complicated simultaneously, and also heavier, cost of manufacture is high, and instrument imaging control accuracy is poor, and the fault rate of instrument is higher.
Therefore, provide a kind of simple in structure, cost is low, control accuracy is high, failure rate is low, noise are little, light and handy nimble light brush therapeutic instrument is real in necessary.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, noise is little, light and handy nimble light brush therapeutic instrument.
For realizing the object of the invention, provide following technical scheme:
The invention provides a kind of light brush therapeutic instrument, it comprises the blue color filter that sets gradually, polaroid, controlled optically-active element, eyepiece, the control device being connected with controlled optically-active element, incident illumination is by blue color filter incident, obtain polarized light via polaroid, then via controlled optically-active element, this controlled optically-active element produces deflection according to the cyclic control signal control polarized light of control device output, from eyepiece outgoing, the polarization direction of the polarized light of output can rotate or swing in the angular range of setting under described control signal effect again.
Light of the present invention brush therapeutic instrument carrys out rotatory polarization sheet and realizes traditional light brush therapeutic instrument of optically-active compared with available technology adopting mechanical mechanism, structure is simpler, do not have heavy frame for movement to become more lightly nimble, utilize controlled optically-active element to control deflection to the polarization direction of the polarized light of exporting through polaroid, it is the optical rotation phenomenon that has utilized cleverly polarized light, the thinking orientation breaking traditions, creative thinking and outstanding substantive distinguishing features, and avoid the heaviness of traditional mechanical structure, noise is large, the shortcomings such as fault rate height, light brush therapeutic instrument of the present invention is simple in structure, cost is low, noise is little, lightly nimble, failure rate is low, and, utilize controlled optically-active element, the relatively more easy regulation and control flexibly of the control signal of its control device, and control accuracy is high, therefore, the present invention has significant progress.
Preferably, the polarization direction of polaroid can pre-determine as required.
Preferably, this controlled optically-active element is longitudinal electro-optic effect optically-active element, before and after this longitudinal electro-optic effect optically-active element, be provided with euphotic electrode, this control device is control circuit, this control circuit is connected with this euphotic electrode respectively by control signal wire, and export cyclic control signal, this control signal is for controlling voltage signal.In the time adopting longitudinal electro-optic effect optically-active element, what control is the voltage being applied between the euphotic electrode of longitudinal electro-optic effect optically-active element front and back, can control voltage by change and change the optically-active angle of output polarization light, thereby control the polarization direction rotation of polarized light or swing.
Preferably, this controlled optically-active element is cross electro-optical effect optically-active element, and this control device is control circuit, and this control circuit is connected with the both sides pole plate of this cross electro-optical effect optically-active element respectively by control signal wire, and export cyclic control signal, this control signal is for controlling voltage signal.
Preferably, this controlled optically-active element is magnetic rotation element, this control device is control circuit and the coil that connects control circuit, this magnetic rotation element is arranged in coil magnetic field, this control circuit is connected with the coil two ends that produce magnetic field respectively by control signal wire, and export cyclic control signal, this control signal is for controlling current signal.
Preferably, the polarization direction of the polarized light of output can rotate under control signal effect.
Preferably, the waveform of controlling the control signal of the polarized light polarization direction rotation of output is sawtooth waveforms, and the optically-active differential seat angle that the minima of this sawtooth waveforms and maximum are corresponding is the integral multiple of 180 degree.
Preferably, the polarization direction of the polarized light of output can swing under control signal effect in the angular range of setting.
Preferably, the control signal waveform that the polarized light polarization direction of control output swings is the variation waveform continuously such as triangular wave or sine wave.Preferably, the polarization direction of emergent light corresponding to the signal minimum in each cycle of control signal waveform and peaked intermediate value is horizontal direction.Preferably, the optically-active differential seat angle that the signal minimum in each cycle and maximum are corresponding is less than or equal to 180 degree as required.
Preferably, the rotary speed of the polarized light polarization direction of output changes with the dynamic change of control signal time-varying characteristics.For the embodiment that adopts longitudinal electro-optic effect optically-active element or cross electro-optical effect optically-active element, can change speed of rotation by the time-varying characteristics of controlling voltage; For the embodiment that adopts magnetic rotation element, the rotary speed of the polarized light polarization direction of output can change with controlling electric current dynamic change.
Preferably, the swing speed of the polarized light polarization direction of output changes with the dynamic change of control signal time-varying characteristics.For the embodiment that adopts longitudinal electro-optic effect optically-active element or cross electro-optical effect optically-active element, can change by controlling the time-varying characteristics of voltage the swing speed of output polarization light polarization direction; For the embodiment that adopts magnetic rotation element, the swing speed of the polarized light polarization direction of output can change with controlling power frequency.
Preferably, the amplitude of fluctuation of the polarized light polarization direction of output changes with the dynamic change of control signal amplitude difference.For the embodiment that adopts longitudinal electro-optic effect optically-active element or cross electro-optical effect optically-active element, the amplitude of fluctuation of the polarized light polarization direction of output can change with controlling voltage amplitude difference; For the embodiment that adopts magnetic rotation element, the amplitude of fluctuation of the polarized light polarization direction of output can change with controlling current amplitude difference.
Preferably, this cross electro-optical effect element or longitudinal electro-optic effect optically-active element can adopt liquid crystal cell, the automatically controlled wave plate of Lithium metaniobate, potassium dihydrogen phosphate (KDP) pockels cell and potassium dideuterium phosphate (DKDP) pockels cell etc. wherein any.
Preferably, the paramagnetic that this magnetic rotation element can be high Verdet constant or contrary magnetic rotation glass.
Contrast prior art, the present invention has the following advantages:
Light of the present invention brush therapeutic instrument compared with prior art structure more simply, more lightly nimble, cost is low, noise is little, light and handy nimble, failure rate is low, and control accuracy is high.
Brief description of the drawings
Fig. 1 is that the light path element of light brush therapeutic instrument of the present invention is arranged schematic diagram;
Fig. 2 is the structural representation of the embodiment mono-of light brush therapeutic instrument of the present invention;
Fig. 3 is the structural representation of the embodiment bis-of light brush therapeutic instrument of the present invention;
Fig. 4 is the structural representation of the embodiment tri-of light brush therapeutic instrument of the present invention;
Fig. 5 is that in the present invention, hypotenuse is the cyclic control signal schematic diagram of the sawtooth waveforms of straight line rising;
Fig. 6 is that hypotenuse is the cyclic control signal schematic diagram of sawtooth waveforms of the curve accelerated again first quick and back slow of a kind of uphill process;
Fig. 7 is that hypotenuse is the first cyclic control signal schematic diagram of the sawtooth waveforms of the slow rear curve slowing down again soon of a kind of uphill process;
Fig. 8 is that hypotenuse is the cyclic control signal schematic diagram of the sawtooth waveforms of straight line decline;
Fig. 9 is that hypotenuse is the cyclic control signal schematic diagram of sawtooth waveforms of the curve accelerated again first quick and back slow of a kind of process that declines;
Figure 10 is that hypotenuse is a kind of first cyclic control signal schematic diagram of the sawtooth waveforms of the slow rear curve slowing down again soon of process that declines;
Figure 11 is that hypotenuse is the cyclic control signal schematic diagram of the triangular wave of straight line;
Figure 12 is the tangent line of crest and the trough curve wave period property control signal schematic diagram parallel with time shaft;
Figure 13 is that crest and trough are all the curve property wave period control signal schematic diagrams on pinnacle.
Detailed description of the invention
Refer to Fig. 1, light brush therapeutic instrument of the present invention comprises the blue color filter 100 setting gradually, polaroid 200, controlled optically-active element 300, eyepiece 400, the control device 500 being connected with controlled optically-active element, incident illumination is by blue color filter 100 incidents, obtain polarized light via polaroid 200, then via controlled optically-active element 300, the cyclic control signal control polarized light that this controlled optically-active element 300 is exported according to control device 500 produces deflection, again from eyepiece 400 outgoing, the polarization direction of the polarized light of output can rotate or swing in the angular range of setting under described control signal effect.The polarization direction of polaroid 200 can pre-determine as required.
Refer to Fig. 2, specifically in embodiment mono-, this controlled optically-active element is longitudinal electro-optic effect optically-active element 310, these longitudinal electro-optic effect optically-active element 310 front and back are provided with euphotic electrode (not indicating), in specific embodiment, this longitudinal electro-optic effect optically-active element 310 can adopt the TN liquid crystal cell of front-back plating ITO electrode, or this longitudinal electro-optic effect optically-active element 310 adopts the automatically controlled wave plate of Lithium metaniobate, potassium dihydrogen phosphate (KDP) pockels cell and potassium dideuterium phosphate (DKDP) pockels cell etc.This longitudinal electro-optic effect optically-active element optimal embodiment is liquid crystal cell, and cost is low should be made good use of.The polarization direction of polaroid can be chosen to be horizontal direction.
This control device is control circuit 510, this control circuit 510 is connected with this euphotic electrode respectively by control signal wire 600, and export cyclic control signal, this control signal is for controlling voltage signal, what control is the voltage being applied between the euphotic electrode of longitudinal electro-optic effect optically-active element front and back, can control voltage by change and change the optically-active angle of output polarization light, thereby control the polarization direction rotation of polarized light or swing.
If need the blue polarized light polarization direction rotation of output, the waveform that is applied to the control voltage between longitudinal electro-optic effect optically-active element 310 front and back euphotic electrodes can be the sawtooth waveforms of Changing Pattern as shown in one of Fig. 5-Figure 10.The optically-active differential seat angle that the minima in each cycle of sawtooth voltage and maximum are corresponding is 180 degree, and the optical direction that the optical direction that Fig. 5-Fig. 7 is corresponding and Fig. 8-Figure 10 are corresponding is contrary.Speed of rotation can change with controlling electric voltage frequency, speed of rotation corresponding to different voltage waveforms can be at the uniform velocity or the speed change of a certain rule, if adopt liquid crystal cell as longitudinal electro-optic effect optically-active element, the characteristic of this waveform corresponding relation and liquid crystal cell is relevant, after selected liquid crystal cell and light path, at the uniform velocity corresponding waveform and waveform corresponding to other Changing Patterns just can be decided.
If need the blue polarized light polarization direction of output to swing, the waveform that is applied to the control voltage between longitudinal electro-optic effect optically-active element 310 front and back euphotic electrodes is that triangular wave or the sine wave etc. of Changing Pattern as shown in one of Figure 11-Figure 13 changes waveform continuously.The polarization direction of emergent light corresponding to the voltage minimum in each cycle and peaked intermediate value is horizontal direction, and the optically-active differential seat angle that the voltage minimum in each cycle and maximum are corresponding is less than or equal to 180 degree as required.The swing speed of the blue polarized light polarization direction of output can change with controlling electric voltage frequency.The amplitude of fluctuation of the blue polarized light polarization direction of output can change with controlling voltage amplitude difference.
Refer to Fig. 3, in embodiment bis-, this controlled optically-active element is cross electro-optical effect optically-active element 320, this control device is control circuit 520,320 liang of lateral electrodes of this cross electro-optical effect optically-active element (not indicating) connect respectively the control signal wire 600 of control circuit 520, in specific embodiment, this longitudinal electro-optic effect optically-active element 310 can adopt liquid crystal cell, the automatically controlled wave plate of Lithium metaniobate, potassium dihydrogen phosphate (KDP) pockels cell and potassium dideuterium phosphate (DKDP) pockels cell etc. wherein any.In Fig. 3, this cross electro-optical effect optically-active element is automatically controlled 1/2 wave plate of the electroded Lithium metaniobate in both sides.The polarization direction of polaroid can be chosen to be horizontal direction.
This control circuit 520 is connected with the both sides battery lead plate of cross electro-optical effect optically-active element 320 respectively by control signal wire 600, and voltage signal is periodically controlled in output, what control is the voltage being applied between cross electro-optical effect optically-active element electrode, can control voltage by change and change the optically-active angle of output polarization light, thereby control the polarization direction rotation of polarized light or swing.
If need the blue polarized light polarization direction rotation of output, the waveform that is applied to the control voltage between cross electro-optical effect optically-active element electrode can be the sawtooth waveforms of Changing Pattern as shown in one of Fig. 5-Figure 10.The optically-active differential seat angle that the minima in each cycle of sawtooth voltage and maximum are corresponding is 180 degree, and the optical direction that the optical direction that Fig. 5-Fig. 7 is corresponding and Fig. 8-Figure 10 are corresponding is contrary.Speed of rotation can change with controlling electric voltage frequency, speed of rotation corresponding to different voltage waveforms can be at the uniform velocity or the speed change of a certain rule, if adopt automatically controlled 1/2 wave plate of Lithium metaniobate as cross electro-optical effect optically-active element, this waveform corresponding relation is relevant with the characteristic of automatically controlled 1/2 wave plate of the electroded Lithium metaniobate in both sides, after the structure of automatically controlled 1/2 wave plate of the electroded Lithium metaniobate in both sides and light path are fixing, at the uniform velocity corresponding waveform and waveform corresponding to other Changing Patterns just can be decided.
If need the blue polarized light polarization direction of output to swing, the waveform that is applied to the control voltage between cross electro-optical effect optically-active element electrode is that triangular wave or the sine wave etc. of Changing Pattern as shown in one of Figure 11-Figure 13 changes waveform continuously.The polarization direction of emergent light corresponding to the voltage minimum in each cycle and peaked intermediate value is horizontal direction, and the optically-active differential seat angle that the voltage minimum in each cycle and maximum are corresponding is less than or equal to 180 degree as required.The swing speed of the blue polarized light polarization direction of output can change with controlling electric voltage frequency.The amplitude of fluctuation of the blue polarized light polarization direction of output can change with controlling voltage amplitude difference.
Refer to Fig. 4, preferably, in embodiment tri-, this controlled optically-active element is magnetic rotation element 330, this control device is control circuit 530 and coil 540, this control circuit 530 is connected with coil 540 two ends that produce magnetic field respectively by control signal wire 600, and this magnetic rotation element 330 is arranged in coil 540 magnetic fields, and the control signal that control circuit 530 produces is the electric current being applied in the coil 540 that produces magnetic field.In specific embodiment, the paramagnetic that this magnetic rotation element 330 can be high Verdet constant or contrary magnetic rotation glass etc.The polarization direction of polaroid can be chosen to be horizontal direction.
If need the blue polarized light polarization direction rotation of output, the waveform that is applied to the control electric current on coil 540 can be the sawtooth waveforms of Changing Pattern as shown in one of Fig. 5-Figure 10, the optically-active differential seat angle that the minima in each cycle of sawtooth current and maximum are corresponding is 180 degree, and the optical direction that the optical direction that Fig. 5-Fig. 7 is corresponding and Fig. 8-Figure 10 are corresponding is contrary.Speed of rotation can change with controlling power frequency, speed of rotation corresponding to different current waveforms can be at the uniform velocity or the speed change of a certain rule, this waveform corresponding relation is relevant with the characteristic of coil 540 with magnetic rotation element 330, after the structure of magnetic rotation element 330 and coil 540 and light path are fixing, at the uniform velocity corresponding waveform and waveform corresponding to other Changing Patterns just can be decided.
If need the blue polarized light polarization direction of output to swing, the waveform that is applied to the control electric current on coil 540 is that triangular wave or the sine wave etc. of Changing Pattern as shown in one of Figure 11-Figure 13 changes waveform continuously, the polarization direction of emergent light corresponding to the current minimum in each cycle and peaked intermediate value is horizontal direction, and the optically-active differential seat angle that the current minimum in each cycle and maximum are corresponding is less than or equal to 180 degree as required.The swing speed of the blue polarized light polarization direction of output can change with controlling power frequency, and the amplitude of fluctuation of the blue polarized light polarization direction of output can change with controlling current amplitude difference.
The waveform of above-mentioned control signal is to obtain through test experiments institute, must carry out actual test to the physical parameter of practical devices, i.e. the relation curve of tests polarization light optically-active angle and control signal could design concrete control waveform thus.
The foregoing is only preferred embodiment of the present invention, protection scope of the present invention is not limited to this, within any equivalent transformation based in technical solution of the present invention all belongs to protection domain of the present invention.
Claims (10)
1. a light brush therapeutic instrument, it is characterized in that, it comprises the blue color filter that sets gradually, polaroid, controlled optically-active element, eyepiece, the control device being connected with controlled optically-active element, incident illumination is by blue color filter incident, obtain polarized light via polaroid, then via controlled optically-active element, this controlled optically-active element produces deflection according to the cyclic control signal control polarized light of control device output, from eyepiece outgoing, the polarization direction of the polarized light of output can rotate or swing in the angular range of setting under described control signal effect again.
2. light brush therapeutic instrument as claimed in claim 1, it is characterized in that, this controlled optically-active element is longitudinal electro-optic effect optically-active element, this control device is control circuit, before and after this longitudinal electro-optic effect optically-active element, be provided with euphotic electrode, this control circuit is connected with this euphotic electrode respectively by control signal wire, and exports cyclic control signal, and this control signal is for controlling voltage signal.
3. light brush therapeutic instrument as claimed in claim 1, it is characterized in that, this controlled optically-active element is cross electro-optical effect optically-active element, this control device is control circuit, this control circuit is connected with the both sides pole plate of this cross electro-optical effect optically-active element respectively by control signal wire, and export cyclic control signal, this control signal is for controlling voltage signal.
4. light brush therapeutic instrument as claimed in claim 1, it is characterized in that, this controlled optically-active element is magnetic rotation element, this control device is control circuit and the coil that connects control circuit, this magnetic rotation element is arranged in coil magnetic field, this control circuit is connected with the coil two ends that produce magnetic field respectively by control signal wire, and exports cyclic control signal, and this control signal is for controlling current signal.
5. the brush of the light as described in claim 1 ~ 4 any one therapeutic instrument, it is characterized in that, the polarization direction of the polarized light of output can rotate under control signal effect, the waveform of controlling the control signal of the polarized light polarization direction rotation of output is sawtooth waveforms, and the optically-active differential seat angle that the minima of this sawtooth waveforms and maximum are corresponding is the integral multiple of 180 degree.
6. the brush of the light as described in claim 1 ~ 4 any one therapeutic instrument, it is characterized in that, the polarization direction of the polarized light of exporting can swing under control signal effect in the angular range of setting, and the control signal waveform of controlling the polarized light polarization direction swing of output is that triangular wave or sine wave etc. change waveform continuously.
7. the brush of the light as described in claim 1 ~ 4 any one therapeutic instrument, is characterized in that, the rotary speed of the polarized light polarization direction of output or swing speed change with the dynamic change of control signal time-varying characteristics.
8. the brush of the light as described in claim 1 ~ 4 any one therapeutic instrument, is characterized in that, the amplitude of fluctuation of the polarized light polarization direction of output changes with the dynamic change of control signal amplitude difference.
9. light is brushed therapeutic instrument as claimed in claim 2 or claim 3, it is characterized in that, this cross electro-optical effect element or longitudinal electro-optic effect optically-active element adopt liquid crystal cell, the automatically controlled wave plate of Lithium metaniobate, potassium dihydrogen phosphate (KDP) pockels cell and potassium dideuterium phosphate (DKDP) pockels cell wherein any.
10. light brush therapeutic instrument as claimed in claim 4, is characterized in that, the paramagnetic that this magnetic rotation element is high Verdet constant or contrary magnetic rotation glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346156.5A CN104068961B (en) | 2014-07-18 | 2014-07-18 | Light brush therapeutic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346156.5A CN104068961B (en) | 2014-07-18 | 2014-07-18 | Light brush therapeutic equipment |
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| Publication Number | Publication Date |
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| CN104068961A true CN104068961A (en) | 2014-10-01 |
| CN104068961B CN104068961B (en) | 2017-02-08 |
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| CN201410346156.5A Active CN104068961B (en) | 2014-07-18 | 2014-07-18 | Light brush therapeutic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016008162A1 (en) * | 2014-07-18 | 2016-01-21 | 深圳市艾尔曼医疗电子仪器有限公司 | Light brush therapeutic apparatus |
| CN113812919A (en) * | 2021-04-26 | 2021-12-21 | 长春理工大学 | Yellow spot testing device and method based on polarization perception space-time sensitivity |
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|---|---|---|---|---|
| CN2221889Y (en) * | 1995-03-03 | 1996-03-13 | 尹永日 | Sunshade glasses for driving motor cycle |
| JPH10239717A (en) * | 1997-02-26 | 1998-09-11 | Fuji Xerox Co Ltd | Optical deflecting element and image forming device using the same |
| CN2875382Y (en) * | 2005-07-15 | 2007-03-07 | 沈晔 | Haidinger's brush typoscope |
| CN102385176A (en) * | 2005-06-20 | 2012-03-21 | 日本电信电话株式会社 | Electrooptic device |
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2014
- 2014-07-18 CN CN201410346156.5A patent/CN104068961B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2221889Y (en) * | 1995-03-03 | 1996-03-13 | 尹永日 | Sunshade glasses for driving motor cycle |
| JPH10239717A (en) * | 1997-02-26 | 1998-09-11 | Fuji Xerox Co Ltd | Optical deflecting element and image forming device using the same |
| CN102385176A (en) * | 2005-06-20 | 2012-03-21 | 日本电信电话株式会社 | Electrooptic device |
| CN2875382Y (en) * | 2005-07-15 | 2007-03-07 | 沈晔 | Haidinger's brush typoscope |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016008162A1 (en) * | 2014-07-18 | 2016-01-21 | 深圳市艾尔曼医疗电子仪器有限公司 | Light brush therapeutic apparatus |
| CN113812919A (en) * | 2021-04-26 | 2021-12-21 | 长春理工大学 | Yellow spot testing device and method based on polarization perception space-time sensitivity |
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| Publication number | Publication date |
|---|---|
| CN104068961B (en) | 2017-02-08 |
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