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WO2016008162A1 - Appareil thérapeutique de brosse lumineuse - Google Patents

Appareil thérapeutique de brosse lumineuse Download PDF

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Publication number
WO2016008162A1
WO2016008162A1 PCT/CN2014/082540 CN2014082540W WO2016008162A1 WO 2016008162 A1 WO2016008162 A1 WO 2016008162A1 CN 2014082540 W CN2014082540 W CN 2014082540W WO 2016008162 A1 WO2016008162 A1 WO 2016008162A1
Authority
WO
WIPO (PCT)
Prior art keywords
control signal
light
optical
polarized light
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/082540
Other languages
English (en)
Chinese (zh)
Inventor
薛军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN PRC ELMMEDICARE MEDICAL ELECTRONIC INSTRUMENT CO Ltd
Original Assignee
SHENZHEN PRC ELMMEDICARE MEDICAL ELECTRONIC INSTRUMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHENZHEN PRC ELMMEDICARE MEDICAL ELECTRONIC INSTRUMENT CO Ltd filed Critical SHENZHEN PRC ELMMEDICARE MEDICAL ELECTRONIC INSTRUMENT CO Ltd
Priority to PCT/CN2014/082540 priority Critical patent/WO2016008162A1/fr
Publication of WO2016008162A1 publication Critical patent/WO2016008162A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H5/00—Exercisers for the eyes

Definitions

  • the present invention relates to the field of optics, and more particularly to a phototherapy apparatus for ophthalmologic amblyopia treatment.
  • the physiological principle of a light brush treatment apparatus is based on an instantaneous Hedinger's brush effect.
  • the instantaneous Hedinger brush effect means that when a person's eye looks at the blue glare through a rotating polarizer, an image similar to a high-speed rotating propeller can be continuously seen near the center of the eye's gaze direction.
  • the instantaneous Haiding's brush effect we call it the light brush effect.
  • the light brush effect only appears on the fovea of the macula because the fovea is the most sensitive area of eye vision.
  • the patient looks at a brush-like or propeller image from the eyepiece of the light brush treatment device. This effect occurs only in the most sensitive areas of the macular area of the retina.
  • the therapeutic instrument made according to this principle is a light brush treatment instrument.
  • Light brush treatment is suitable for the treatment of central gaze amblyopia around the eyes, as well as for the treatment of abnormal eye retina.
  • the light brush effect in a conventional light brush treatment apparatus is achieved by using a mechanical mechanism to rotate a blue transparent wafer with a polarizing plate placed behind a white light source.
  • a light brush treatment device often generates relatively large noise due to the use of a motor.
  • the structure is very complicated, cumbersome, and the manufacturing cost is high, and the accuracy of the imaging control of the instrument is poor, and the failure rate of the instrument is relatively high.
  • the invention provides a light brush therapeutic apparatus, which comprises a blue filter arranged in sequence, a polarizing plate, a controllable optical element, an eyepiece, and a control device connected to the controllable optical element, wherein the incident light is incident by the blue filter.
  • the control signal can be rotated or swung within a set angle range.
  • the conventional light brush therapeutic apparatus of the present invention has a simpler structure and a lighter and more flexible mechanical structure than the prior art, which uses a mechanical mechanism to rotate the polarizing plate to realize optical rotation.
  • the optically-rotating element controls and deflects the polarization direction of the polarized light outputted by the polarizing plate, and is an ingenious use of the optical rotation phenomenon of the polarized light to break Description
  • the light brush treatment instrument of the invention has the advantages of simple structure, low cost, low noise, light and flexible,
  • the failure rate is low, and the control signal of the control device is relatively easy to be flexibly regulated by the controllable optical rotatory element, and the control precision is high. Therefore, the present invention has significant progress.
  • the polarization direction of the polarizing plate can be predetermined as needed.
  • the controllable optical rotatory element is a longitudinal electro-optical effect rotatory element
  • the longitudinal electro-optical effect rotatory element is provided with a transparent electrode before and after
  • the control device is a control circuit
  • the control circuit respectively transmits the light through the control signal line
  • the electrodes are connected and output a periodic control signal, which is a control voltage signal.
  • a longitudinal electro-optic effect optical rotatory element is used, the voltage applied between the front and rear transparent electrodes of the longitudinal electro-optical effect rotatory element is controlled, and the rotation angle of the output polarized light can be changed by changing the control voltage, thereby controlling the polarization direction of the polarized light to rotate or swing.
  • controllable optical rotatory element is a lateral electro-optical effect rotatory element
  • control device is a control circuit
  • control circuit is respectively connected to the two-layer plates of the lateral electro-optical effect rotatory element through a control signal line, and outputs a period
  • the control signal is a control voltage signal.
  • controllable optical rotatory element is a magnetic rotatory element
  • control device is a control circuit and a coil connected to the control circuit, wherein the magneto-optical element is disposed in a coil magnetic field, and the control circuit respectively passes through the control signal line
  • the coil generating the magnetic field is connected at both ends, and outputs a periodic control signal, which is a control current signal.
  • the polarization direction of the output polarized light is rotatable under the action of the control signal.
  • the waveform of the control signal for controlling the polarization of the polarization of the output polarization is a sawtooth wave, and the difference between the minimum and maximum values of the sawtooth wave is an integer multiple of 180 degrees.
  • the polarization direction of the output polarized light can be oscillated within a set angle range under the action of the control signal.
  • the control signal waveform for controlling the output polarization direction of the polarized light is a continuously varying waveform such as a triangular wave or a sine wave.
  • the polarization direction of the outgoing light corresponding to the median value of the signal minimum value and the maximum value of each period of the control signal waveform is a horizontal direction.
  • the difference in optical rotation angle corresponding to the minimum value and the maximum value of each period of the period is less than or equal to 180 degrees as needed.
  • the rotational speed of the output polarization direction of the polarized light changes dynamically as the time-varying characteristic of the control signal changes dynamically.
  • the optical rotation speed can be varied by controlling the time-varying characteristic of the voltage; for embodiments employing a magneto-optical element, the rotational speed of the output polarization direction can be The control current changes dynamically.
  • the swing speed of the output polarization direction of the polarized light changes dynamically as the time-varying characteristic of the control signal changes dynamically.
  • the swing speed of the polarization direction of the output polarized light can be changed by controlling the time-varying characteristic of the voltage; for the embodiment using the magneto-optical element, the output polarized light is polarized
  • the direction of the swing speed can vary with the control current frequency.
  • the amplitude of the swing of the polarization direction of the output polarized light changes dynamically as the amplitude difference of the control signal changes dynamically.
  • the amplitude of the amplitude of the output polarization polarization can vary as a function of the magnitude of the control voltage amplitude; for embodiments employing a magneto-optical element, the output polarization
  • the amplitude of the swing of the light polarization direction may vary as the magnitude of the control current amplitude changes.
  • the lateral electro-optic effect element or the longitudinal electro-optic effect optical element can adopt a liquid crystal cell, a lithium niobate electro-controlled wave plate, a potassium dihydrogen phosphate (KDP) Pockels cell, and a potassium dipotassium phosphate (DKDP). Kers box and so on.
  • KDP potassium dihydrogen phosphate
  • DKDP potassium dipotassium phosphate
  • the magneto-optical element may be a paramagnetic or anti-magnetic optical glass with a high-field constant.
  • the present invention has the following advantages:
  • the light brush therapeutic apparatus of the invention is simpler, lighter and more flexible, less costly, lighter and lighter, has a lower failure rate, and has higher regulation precision than the prior art.
  • FIG. 1 is a schematic view showing the arrangement of optical path components of the light brush treatment apparatus of the present invention
  • FIG. 2 is a schematic structural view of a first embodiment of a light brush treatment apparatus according to the present invention.
  • FIG. 3 is a schematic structural view of a second embodiment of a light brush treatment apparatus according to the present invention.
  • FIG. 4 is a schematic structural view of a third embodiment of a light brush treatment apparatus according to the present invention.
  • FIG. 5 is a schematic diagram of a periodic control signal of a sawtooth wave whose oblique side is linearly rising in the present invention
  • FIG. 6 is a schematic diagram of the periodic control signal of the sawtooth wave of the curve in which the ascending edge is fast, then slow and then accelerated;
  • FIG. 7 is a saw with a curve in which the rising process is slow first and then slowed down again.
  • Fig. 8 is a schematic diagram of the periodic control signal of the sawtooth wave whose oblique side is linearly falling;
  • Fig. 9 is a schematic diagram of the periodic control signal of the sawtooth wave of the curve in which the hypotenuse is first fast, then slow and then accelerated;
  • Fig. 10 is a saw with a hypoglytic curve which is slowed down and then slowed down again. Schematic diagram of the periodic control signal of the tooth wave;
  • Fig. 11 is a schematic diagram of the periodic control signal of the triangular wave whose oblique side is a straight line;
  • Figure 12 is a schematic diagram of periodic control signals of curved waves parallel to the time axis of the peaks and troughs;
  • Figure 13 is a schematic diagram of the periodic control signals for the curved waves whose peaks and troughs are apex.
  • the light brush treatment apparatus of the present invention comprises a blue filter 100, a polarizing plate 200, a controllable optical element 300, an eyepiece 400, and a control device 500 connected to the controllable optical element.
  • a blue filter 100 Light by blue filter 100 Instruction manual
  • polarized light Upon incident, polarized light is obtained via the polarizing plate 200, and then through the controllable optical rotating element 300, the controllable optical rotating element 300 controls the polarized light to be deflected according to the periodic control signal outputted by the control device 500, and then exits from the eyepiece 400, and the output polarized light is output.
  • the polarization direction can be rotated by the control signal or can be swung within a set angle range.
  • the polarization direction of the polarizing plate 200 can be predetermined as needed.
  • the controllable optical rotatory element is a longitudinal electro-optical effect rotatory element 310
  • the longitudinal electro-optical effect rotatory element 310 is provided with a transparent electrode (not labeled) before and after.
  • the longitudinal electro-optic effect optical rotatory element 310 may be a TN liquid crystal cell with a front and back ITO-plated electrode, or the vertical electro-optic effect optical rotatory element 310 may be a lithium niobate electro-controlled wave plate, a potassium dihydrogen phosphate (KDP) Pockels cell, and phosphoric acid. Diterpenoid potassium (DKDP) Pockels box and so on.
  • the preferred embodiment of the longitudinal electro-optic effect optical rotator is a liquid crystal cell, which is low in cost and good in application.
  • the polarization direction of the polarizing plate can be selected as the horizontal direction.
  • the control device is a control circuit 510, which is respectively connected to the transparent electrode through a control signal line 600, and outputs a periodic control signal, the control signal is a control voltage signal, and the control is applied to the longitudinal electro-optic light.
  • the voltage between the light-transmitting electrodes before and after the effect of the optical rotating element can be changed by changing the control voltage to change the optical rotation angle of the output polarized light, thereby controlling the polarization direction of the polarized light to rotate or oscillate.
  • the waveform of the control voltage applied between the front and rear transparent electrodes of the longitudinal electro-optic effect optical rotating element 310 may be a sawing tooth as shown in one of FIGS. 5-10. wave.
  • the sawtooth wave voltage The difference between the minimum and maximum values of each cycle is 180 degrees.
  • the corresponding optical rotation direction in Figure 5-7 is opposite to the optical rotation direction in Figure 8- Figure 10.
  • the optical rotation speed can be changed according to the control voltage frequency.
  • the optical rotation speed corresponding to different voltage waveforms can be uniform speed or a certain regular shift.
  • the waveform correspondence is related to the characteristics of the liquid crystal cell. After the liquid crystal cell and the optical path are selected, the waveform corresponding to the uniform velocity and the waveform corresponding to other variation laws can be determined.
  • the waveform of the control voltage applied between the front and rear transparent electrodes of the longitudinal electro-optic effect optical rotating element 310 is a triangular wave or sine which is changed as shown in one of FIGS. 11 to 13 Waves and other continuously varying waveforms.
  • the polarization direction of the outgoing light corresponding to the median value of the maximum value and the maximum value of each period is the horizontal direction, and the difference in the optical rotation angle corresponding to the minimum value and the maximum value of each period is less than or equal to 180 degrees as needed.
  • the swing speed of the output polarization direction of the blue polarized light can vary with the frequency of the control voltage.
  • the amplitude of the swing of the output polarization direction of the blue polarized light may vary as the magnitude of the control voltage amplitude changes.
  • the controllable optical rotator is a lateral electro-optic effect rotator 320
  • the control device is a control circuit 520.
  • the electrodes (not labeled) on the two sides of the lateral electro-optical rotator 320 are respectively connected to the control circuit.
  • the longitudinal electro-optic effect optical element 310 can adopt a liquid crystal cell, a lithium niobate electro-controlled wave plate, a potassium dihydrogen phosphate (KDP) Pockels cell, and a potassium dipotassium phosphate (DKDP). Kers box and so on.
  • the lateral electro-optic effect optical rotator is a lithium niobate electrically controlled 1/2 wave plate with electrodes on both sides.
  • the polarization direction of the polarizing plate can be selected as the horizontal direction.
  • the control circuit 520 is respectively connected to the electrode plates on both sides of the lateral electro-optic effect optical rotating element 320 through the control signal line 600, and outputs a periodic control voltage signal, which controls the voltage applied between the electrodes of the lateral electro-optic effect optical rotating element.
  • the rotation angle of the output polarized light can be changed by changing the control voltage, thereby controlling the polarization direction of the polarized light to rotate or oscillate.
  • the waveform of the control voltage applied between the electrodes of the lateral electro-optic effect optical element may be a sawtooth wave as shown in one of FIGS.
  • the difference between the minimum and maximum values of the sawtooth voltage for each period is 180 degrees.
  • the direction of rotation corresponding to Figure 5-7 is opposite to the direction of rotation for Figure 8-10.
  • the optical rotation speed can be changed according to the control voltage frequency.
  • the optical rotation speed corresponding to different voltage waveforms can be uniform speed or a certain regular shift.
  • lithium niobate electronically controlled 1/2 wave plate is used as the transverse electro-optical effect optical rotating element, the waveform corresponds to The relationship is related to the characteristics of the lithium niobate electronically controlled 1/2 wave plate with electrodes on both sides.
  • the structure and the optical path of the lithium niobate electronically controlled 1/2 wave plate with electrodes on both sides are fixed, and the waveform corresponding to the uniform velocity corresponds to other variations.
  • the waveform can be determined.
  • the waveform of the control voltage applied between the electrodes of the lateral electro-optical effect optical element is a change law such as a triangular wave or a sine wave as shown in one of FIGS. 11 to 13 Waveform.
  • the polarization direction of the outgoing light corresponding to the median value of each period and the median value of the maximum value is the horizontal direction, and the difference in the optical angle between the minimum value and the maximum value of each period is less than or equal to 180 degrees as needed.
  • the swing speed of the output polarization direction of the blue polarized light may vary with the frequency of the control voltage.
  • the amplitude of the swing of the output polarization direction of the blue polarized light may vary as the amplitude of the control voltage varies.
  • the controllable optical rotatory element is a magnetic rotatory element 330.
  • the control device is a control circuit 530 and a coil 540.
  • the control circuit 530 respectively passes the control signal line 600.
  • the magneto-optical element 330 is disposed in a magnetic field of the coil 540, and the control signal generated by the control circuit 530 is a current applied to the coil 540 that generates the magnetic field.
  • the magneto-optical element 330 may be a paramagnetic or inverse-magnetic glass or the like having a high-field constant.
  • the polarization direction of the polarizing plate can be selected to be the horizontal direction.
  • the waveform of the control current applied to the coil 540 may be a sawtooth wave as shown in one of FIGS. 5 to 10, and the sawtooth wave current is each.
  • the difference in the optical rotation angle corresponding to the minimum value and the maximum value of the period is 180 degrees, and the optical rotation direction corresponding to FIG. 5 to FIG. 7 is opposite to the optical rotation direction corresponding to FIG. 8 to FIG.
  • the speed can vary with the control current frequency.
  • the optical speed corresponding to different current waveforms can be a uniform speed or a certain regular shift.
  • the waveform correspondence is related to the characteristics of the magneto-optical element 330 and the coil 540.
  • the magneto-optical element 330 After the structure and the optical path of the coil 540 are fixed, the waveform corresponding to the uniform velocity and the waveform corresponding to other variation laws can be determined.
  • the waveform of the control current applied to the coil 540 is a continuously varying waveform such as a triangular wave or a sine wave as shown in one of FIGS. 11 to 13 .
  • the polarization direction of the outgoing light corresponding to the median value of the periodic current minimum value and the maximum value is the horizontal direction, and the optical rotation angle difference corresponding to the current minimum value and the maximum value of each cycle is less than or equal to 180 degrees as needed.
  • the swing speed of the output polarization direction of the blue polarized light may vary with the control current frequency, and the amplitude of the swing of the output polarization direction of the blue polarized light may vary as the control current amplitude difference changes.
  • the waveform of the above control signal is obtained through testing and experimental research, and the physical parameters of the actual device must be actually tested, that is, the relationship between the polarization angle of the polarized light and the control signal is tested, thereby designing a specific control waveform.

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Pain & Pain Management (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

L'invention concerne un appareil thérapeutique de brosse lumineuse, comprenant des filtres optiques bleus disposés de façon séquentielle (100), un polariseur (200), un élément de rotation optique pouvant être commandé (300), un oculaire (400), et un dispositif de commande (500) relié à l'élément de rotation optique pouvant être commandé (300) ; une lumière incidente pénètre à travers les filtres optiques bleus (100) pour obtenir une lumière polarisée (200) par l'intermédiaire du polariseur (200), puis passe à travers l'élément de rotation optique pouvant être commandé (300) ; l'élément de rotation optique pouvant être commandé (300) commande la lumière polarisée de façon à générer une déviation par l'intermédiaire d'un signal de commande périodique délivré par le dispositif de commande (500) ; et la lumière est ensuite émise à travers l'oculaire (400), et la direction de polarisation de la lumière polarisée émise peut tourner ou osciller dans une plage d'angles définie sous l'action du signal de commande. L'appareil thérapeutique de brosse lumineuse a une structure simple et un faible coût, fait peu de bruit, a un faible taux de panne et une précision de commande élevée, et est léger et facile à manipuler.
PCT/CN2014/082540 2014-07-18 2014-07-18 Appareil thérapeutique de brosse lumineuse Ceased WO2016008162A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/082540 WO2016008162A1 (fr) 2014-07-18 2014-07-18 Appareil thérapeutique de brosse lumineuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/082540 WO2016008162A1 (fr) 2014-07-18 2014-07-18 Appareil thérapeutique de brosse lumineuse

Publications (1)

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WO2016008162A1 true WO2016008162A1 (fr) 2016-01-21

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522474A (en) * 1980-05-20 1985-06-11 Slavin Sidney H Spinning optics device
CN1917806A (zh) * 2004-02-10 2007-02-21 光视有限公司 高效低相干干涉测量
CN101352388A (zh) * 2008-09-04 2009-01-28 北京航空航天大学 弱视治疗仪
CN101685210A (zh) * 2008-09-22 2010-03-31 纬创资通股份有限公司 可改变偏振化图像的偏光角度的图像处理系统及方法
CN103919666A (zh) * 2014-04-25 2014-07-16 西安华亚电子有限责任公司 海丁格氏刷弱视治疗仪及其控制方法
CN104068961A (zh) * 2014-07-18 2014-10-01 深圳市艾尔曼医疗电子仪器有限公司 光刷治疗仪
CN204092507U (zh) * 2014-07-18 2015-01-14 深圳市艾尔曼医疗电子仪器有限公司 新型光刷治疗仪

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522474A (en) * 1980-05-20 1985-06-11 Slavin Sidney H Spinning optics device
CN1917806A (zh) * 2004-02-10 2007-02-21 光视有限公司 高效低相干干涉测量
CN101352388A (zh) * 2008-09-04 2009-01-28 北京航空航天大学 弱视治疗仪
CN101685210A (zh) * 2008-09-22 2010-03-31 纬创资通股份有限公司 可改变偏振化图像的偏光角度的图像处理系统及方法
CN103919666A (zh) * 2014-04-25 2014-07-16 西安华亚电子有限责任公司 海丁格氏刷弱视治疗仪及其控制方法
CN104068961A (zh) * 2014-07-18 2014-10-01 深圳市艾尔曼医疗电子仪器有限公司 光刷治疗仪
CN204092507U (zh) * 2014-07-18 2015-01-14 深圳市艾尔曼医疗电子仪器有限公司 新型光刷治疗仪

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