CN217794139U - Light-emitting device and myopia treatment instrument - Google Patents
Light-emitting device and myopia treatment instrument Download PDFInfo
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- CN217794139U CN217794139U CN202221493008.2U CN202221493008U CN217794139U CN 217794139 U CN217794139 U CN 217794139U CN 202221493008 U CN202221493008 U CN 202221493008U CN 217794139 U CN217794139 U CN 217794139U
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Abstract
The utility model provides a pair of illuminator and myopia treatment instrument, luminescence unit adopt laser instrument or LED illuminator to produce light, a branch of light process of produced light path isolating construction become two bundles of light if the light path after-separating of the lamellar body of the transparent material preparation that has the reflectance coating. One beam of light continuously propagates along the original light path and penetrates out of the transparent material, and the other beam of light is reflected by the reflecting film and then irradiates on the optical sensor of the optical power detection device, so that the power of the beam of light is detected. Since the value of the reflection coefficient K of the reflective film is only related to the material and the thickness of the reflective film, and is not related to the temperature environment or the humidity environment, a beam measured by the optical power sensor is used for detecting the power of the light.
Description
Technical Field
The utility model relates to a myopia treatment technical field, concretely relates to can detect illuminator of light source power.
Background
The training instrument for myopia and amblyopia is a therapeutic instrument which uses laser with specific wavelength to irradiate eyeball, and can control the rapid growth of ocular axis by improving the blood circulation of eyeground and promoting the secretion of dopamine so as to prevent and control myopia or amblyopia. In the prior art, the safety and effectiveness of the semiconductor laser for treating myopia or amblyopia by using a specific 650nm wavelength has been widely and sufficiently studied at home and abroad. In the ' El Xingxing light-feeding instrument control teenagers and children myopia treatment analysis ' published in the clinical Combined with Chinese and Western medicine ' in the 10 th stage of 2018, a comparison method of a treatment group and a comparison group is adopted, 650nm wavelength semiconductor laser is used for irradiating and treating eyes, the result shows that the growth of the axis of the eye of the treatment group is controlled to a certain extent, and the 650nm semiconductor laser can effectively control the overquick growth of the axis of the eye and further control the myopia development to a certain extent. (see page 64, 3. Discussion). In the document, a certain explanation is also made on the control mechanism, and it is considered that 650nm red light simulates light rays with a special wavelength band in natural light, so that the defects in light of teenagers, internal massage and children health can be effectively overcome, the content of retinal dopamine is ensured, and the occurrence and development of myopia are inhibited. For example, in "650nm semiconductor laser controlled juvenile myopia progression research", published in "journal of ophthalmology" 2021, stage 2, the problem of myopia caused by too rapid growth of the axis of the semiconductor laser controlled juvenile eye "was scientifically studied by using a random contrast method. During the follow-up visit of 12 months, the subject does not have ocular complications such as conjunctival congestion, edema, photophobia, lacrimation, corneal epithelial injury, lenticular opacity, macular damage and the like through observation under a slit lamp microscope and OCT results, which shows that 650nm red light retardation and myopia progression reduction are effective and safe (see page 2, page 136, right column, penultimate paragraph 1).
In the prior art, the structure of complete myopia or amblyopia therapeutic instrument is disclosed, for example, the utility model patent with the name of vision training instrument with publication number CN208741772U discloses a concrete structure, which comprises a base, a control unit, a light source therapeutic unit, a pupil distance adjusting mechanism and the like. The therapeutic light irradiates the fundus of the human body through the lens cone to play a therapeutic role.
The applicant finds that the therapeutic effect of the myopia therapeutic apparatus has a great relationship with the power of the therapeutic light generated by the myopia therapeutic apparatus. The luminous power of a common laser is related to temperature, humidity and structural changes in the laser, and the luminous power of the common laser cannot reach the preset therapeutic light power after a period of use. Therefore, a power detection device is needed to detect the generated laser power and further adjust the driving current of the light emitting unit of the therapeutic light according to the detected power to recover the therapeutic light power.
Fig. 1 is a schematic diagram showing the light transmission of a material with light transmitting ability and light reflecting ability. Typically, the material is made of a material such as glass-plastic or any other transparent material with a reflective film attached to the surface. The reflection coefficient of the luminescent film can be adjusted and set through the material, thickness and the like of the reflective film. In the present application, that is, by using the structural manner of disposing the reflective film on the light-transmitting material, one light beam a shown in fig. 1 is reflected by the surface of the reflective film and then separated into two light beams B and C, where the light beam B continues to propagate forward along the optical path of the light beam a before separation, and the light beam C generates a deflection at a certain angle α from the propagation line of the original light beam a due to the reflection of the surface of the reflective film. It should be noted that the reflection coefficient of a general reflective film does not change with environmental factors (such as temperature and humidity) under the condition of a certain material and thickness. The light emitting device structure is applied to the field of myopia treatment to detect the light power of the light emitting unit, and then the power of light generated by the light emitting unit is further adjusted through circuit feedback.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, the present invention provides a light emitting device, which is capable of separating light generated by a light emitting unit to generate at least two paths of light, and performing power detection on one path of light; and further adjusting the driving current of the light-emitting unit through a detection circuit and a control circuit.
A light-emitting device comprises a light-emitting element,
a light emitting unit for generating laser or LED light;
the light path separation structure is used for separating one beam of light generated by the light-emitting unit into at least two beams of light;
and the optical power detection device is used for carrying out optical power detection on one beam of light separated by the light path separation structure.
Furthermore, the optical power detection device is arranged on one side of an optical element in the light path separation structure, light generated by the light emitting unit passes through the optical element and then is separated into two beams of light, one beam of separated light passes through the optical element along a light path before separation, and the other beam of light changes the light path and irradiates the optical power detection device.
Further, the light path separation structure further comprises a housing, and the optical element is a lens or a prism.
Further, the LED luminous power detection device further comprises a hollow tube body, one end of the hollow tube body is connected with the laser or the LED illuminator, the other end of the hollow tube body is connected with the shell, and the luminous power detection device is arranged in the shell.
Further, the optical power detection device comprises an optical sensor, and can convert the light irradiated on the optical power detection device into an electric signal, and the electric signal is converted into optical power data through a power detection circuit.
The optical sensor is connected with a divider resistor, the divider resistor is connected with a rectifier module, the rectifier module is connected with the base of the triode, the anode of the laser or the LED illuminator is connected with a power supply, the cathode of the laser or the LED illuminator is connected with the collector of the triode, and the emitter of the triode is connected with the divider resistor.
Preferably, the light path separating structure includes an optical fiber, and the light generated by the light emitting unit is separated into two beams of light through the optical fiber, wherein one beam of light irradiates the optical power detecting device.
A myopia therapeutic apparatus comprises a base and a therapeutic unit arranged on the base,
the treatment unit comprises a machine shell, an adjusting unit is arranged in the machine shell, and the light-emitting device is arranged on the adjusting unit;
the adjusting unit comprises a mounting seat, and the light-emitting device is arranged on the mounting seat and adjusts the position of the treatment unit through the gear unit.
Furthermore, the adjusting unit includes a motor, an output shaft of the motor is connected with a first gear, the first gear is in meshing transmission with a fluted disc, the fluted disc is in meshing connection with a first rack and a second rack, and the first rack and the second rack are connected with the mounting base.
Furthermore, the adjusting unit includes a motor, an output shaft of the motor is connected with a first gear, the first gear is in meshing transmission with a fluted disc, a second gear is coaxially arranged on the fluted disc, the gear is in meshing connection with a first rack and a second rack, and the first rack and the second rack are connected with the mounting base.
The utility model provides a light-emitting device, its beneficial effect lies in, luminescence unit adopt laser instrument or LED illuminator to produce light, a branch of light process of produced light path separation structure become two bundles of light as the light path after-separating of the lamellar body of the transparent material preparation that has the reflectance coating. One beam of light is continuously transmitted along the original light path and penetrates out of the transparent material, and the other beam of light is reflected by the reflecting film and then irradiates on the optical sensor of the optical power detection device, so that the power of the beam of light is detected. The reflection coefficient K value of the reflection film is only related to the material and the thickness of the reflection film, but not to a temperature environment or a humidity environment, and one beam measured by the optical power sensor is used for detecting the power of the light. Through the utility model discloses can real-time supervision illuminator's power in order to guarantee safe in utilizationly. Furthermore, the power detected by the power monitoring circuit is compared with the preset power to generate an electric signal, the electric signal is input into the control circuit, and the control circuit adjusts the driving current of the laser input into the light-emitting unit so as to adjust the output power of the light-emitting unit within a certain range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic view of a light path of a light beam separated by a reflective film formed on a light transmissive material;
fig. 2 is a schematic structural diagram of a first embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a first embodiment of the present invention;
fig. 4 is a circuit diagram of adjusting the light emitting power of the light emitting unit according to the first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 8 is a schematic view of the four-perspective therapeutic apparatus according to the embodiment of the present invention;
FIG. 9 is a schematic view of the interior of the myopia treatment apparatus of the present invention after the casing is opened;
FIG. 10 is an exploded view of the light source device of the myopia treatment apparatus of the present invention;
fig. 11 is a top view of fig. 9 of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
The first embodiment is as follows:
a light source device, as shown in FIG. 2, includes a viewing tube 1, a light emitting unit 12 disposed at one end of the viewing tube 1, and a housing 11 disposed at the other end of the viewing tube. The viewing tube 1 and the housing 11 both provide a closed environment for isolating external light, and the light energy generated by the light emitting unit 12 passes through the viewing tube 1 and out of one end of the housing 11.
The light emitting unit 12 is a semiconductor laser and is structured to include a semiconductor laser diode 121, and an optical device, generally a lens 122, capable of shaping light generated by the semiconductor laser diode 121. As shown in fig. 3, a conventional semiconductor laser diode 121 is fixed on a circuit board, a copper pillar encapsulates the semiconductor laser diode 121 by glue, and the lens 122 is disposed in the copper pillar. The light generated by the semiconductor laser diode 121 is shaped by the lens 122 to generate a collimated laser beam which propagates forward.
As shown in fig. 3, in the present embodiment, a spectroscope 110 is disposed in the housing 11, the sheet body is made of transparent material such as glass, and a reflective film is coated on the sheet body, so that a part of light irradiated by the output light generated by the light emitting unit 12 is continuously transmitted along the light path of the original light to be the treatment light, and another part of light changes the light path to be the detection light. An optical power detection device is disposed in the housing 11, and the optical power detection device includes an optical sensor 111 and a circuit board 112, wherein the optical sensor 111 is capable of sensing light irradiated thereon and converting an optical signal generated by the light into an electrical signal. An electrical signal generated by the optical sensor 111 is input into a control circuit, which is electrically connected to the light emitting unit 12. As shown in fig. 4, the electrical signal output by the optical sensor 111 is processed by a signal and then input to a single chip or a chip, and the processed signal is input to a voltage dividing resistor R83 and then input to a rectifying module composed of a resistor R87 and a capacitor. The rectifying module is connected with the base electrode of the triode, the positive electrode of the laser or the LED illuminator is connected with the power supply, the negative electrode of the laser or the LED illuminator is connected with the collector electrode of the triode, and the emitting electrode of the triode is connected with a divider resistor R89. The detected power detected by the power detection device is P 0 And the therapeutic light power P 1 Can detect the power P through the coefficient K of the reflecting film 0 And (5) obtaining two parameters through conversion. By making the detected power be P 0 Adjusting the magnitude of the driving current to adjust the therapeutic light power P 1 So that P is 1 Working within a preset range.
The second embodiment:
in a light source device, as shown in fig. 5, a light emitting unit 21 is directly connected to a closed housing 22. As shown in fig. 5, a sheet body as in the first embodiment or a beam splitter prism 23 as in the present embodiment may be provided in the housing 22, and a reflective film may be provided on the prism 23. As shown in fig. 6, one light beam generated by the light-emitting unit 21 passes through the beam splitter prism 23 provided with a reflective film and then is split into two light beams, wherein one light beam propagates along the light path of the original light beam, and the other light beam changes the light path to irradiate to the light power detection device having the same structure as the embodiment, and the driving current input to the light-emitting unit is adjusted through the control circuit, so as to adjust the power of the therapeutic light.
Example three:
a light source device comprises a light emitting unit, a viewing cylinder and a closed shell which are sequentially connected. As shown in fig. 7, the light generated by the light emitting unit 31 is guided into one optical fiber 32, and the optical fiber 32 is split into two paths at the position of the optical power detecting device 34 of the housing 33, wherein one path is guided to the optical sensor of the optical power detecting device 34 and the other path is propagated along the optical path of the light before the split.
Example four:
a myopia therapeutic apparatus using any one of the light source devices of embodiments 1-3 is provided, as shown in FIG. 8, with a base 3 and a therapeutic unit 4 disposed on the base 3, wherein the therapeutic unit 4 includes a housing 41 with a mounting seat 42 disposed therein, and a viewing cylinder 43 disposed on the mounting seat 42. As shown in fig. 10, one end of the viewing cylinder 43 is connected to a light emitting unit 44 to generate semiconductor laser, the other end of the viewing cylinder 43 is provided with a housing 45, and a spectroscope or a spectroscope prism 46 is arranged in the housing 45. The light emitting unit 44 includes a light source seat 441, and the semiconductor laser 440 is packaged in the light source seat 441 by a circuit board 442. Inside the housing, outside the latter, there is provided an optical power detection device 48 consisting of an optical sensor and a circuit board.
As shown in fig. 9 and 11, a motor 421 is disposed on the mounting base 42, an output shaft of the motor 421 is in meshing transmission with a toothed plate 422 through a first gear, the toothed plate 422 is coaxially connected with a second gear 423 thereon, the second gear 423 is in meshing transmission with two racks 424, and the racks 424 are connected with the mounting base 42. The output shaft of the starting motor 421 rotates to drive the gear plate 422 to rotate, so as to drive the rack 424 to move, and finally drive the mounting base 42 to move along a guide rod 47. And the view tube 43 mounted on the mount 42 is also moved in synchronization. In this embodiment, the fluted disc 422 is coaxially connected with the second gear 423 thereon, the rotation speed of the second gear 423 is reduced by the larger fluted disc 422, and the rack 424 connected with the second gear 423 more gently drives the mounting base 42 to move along the guide rod 47.
In use, the treatment unit semiconductor laser generates red treatment light in the wavelength range 630-670nm, preferably 650 nm. The light is transmitted through the viewing tube 43 and then irradiates the light flat sheet or the beam splitter prism 46 in the housing 45. The original beam light is split into two beams after passing through the beam splitter or beam splitter prism 46, one of the two beams continues to propagate along the optical path of the original beam light, and the other beam changes the optical path and irradiates the optical power detection device 48.
The optical power detection device 48 can convert the sensed optical signal into an electrical signal after sensing the detected light, and acquire power data through the power detection circuit. After the reflection coefficient K of the beam splitter or beam splitter prism 46 is known, the power of the other therapeutic light beam passing out of the beam splitter or beam splitter prism 46 can be known according to the detected light power. The chip sends a signal to the control circuit after processing the signal acquired by the optical power detection device. The control circuit adjusts the driving current input to the semiconductor laser 440 according to the signal. If the therapeutic light power is lower than the preset power, the driving current is increased, and if the therapeutic light power is higher than the preset power, the driving current is decreased. The light power detection device 48 continuously detects the detected light power and dynamically adjusts the therapeutic light power in real time.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A light-emitting device is characterized by comprising,
a light emitting unit for generating laser or LED light;
the light path separation structure is used for separating one beam of light generated by the light-emitting unit into at least two beams of light;
and the optical power detection device is used for carrying out optical power detection on one beam of light separated by the light path separation structure.
2. The light-emitting device according to claim 1, wherein the optical power detection device is disposed on one side of the optical element in the light path splitting structure, the light generated by the light-emitting unit passes through the optical element and is split into two beams, one of the two beams passes through the optical element along the light path before splitting, and the other beam changes the light path and irradiates the optical power detection device.
3. A lighting device as claimed in claim 2, wherein said light path splitting structure further comprises a housing, and said optical element is a beam splitter or a beam splitter prism.
4. A lighting device according to claim 3, further comprising a hollow tube, wherein one end of the hollow tube is connected to the laser or the LED illuminator, the other end of the hollow tube is connected to the housing, and the optical power detection device is disposed in the housing.
5. A light-emitting device according to any one of claims 1-4, wherein the optical power detection means comprises an optical sensor and is capable of converting light impinging thereon into electrical signals.
6. The light-emitting device according to claim 4, further comprising a chip for processing the electrical signal detected by the light sensor and outputting a driving signal, wherein the light sensor is connected to a voltage dividing resistor, the voltage dividing resistor is connected to a rectifying module, the rectifying module is connected to a base of the transistor, a positive electrode of the laser or the LED is connected to the power supply, a negative electrode of the laser or the LED is connected to a collector of the transistor, and an emitter of the transistor is connected to the voltage dividing resistor.
7. The device as claimed in claim 1, wherein the light path splitting structure includes an optical fiber, and the light generated by the light emitting unit is split into two beams of light by the optical fiber, wherein one beam of light irradiates the optical power detecting device.
8. A myopia treatment apparatus using the light-emitting device according to any one of claims 1 to 7, comprising a base and a treatment unit disposed on the base,
the treatment unit comprises a machine shell, an adjusting unit is arranged in the machine shell, and the light-emitting device is arranged on the adjusting unit;
the adjusting unit comprises a mounting seat, and the light-emitting device is arranged on the mounting seat and adjusts the position of the treatment unit through the gear unit.
9. The apparatus of claim 8, wherein the adjustment unit comprises a motor, an output shaft of the motor is connected to a first gear, the first gear is engaged with a gear plate, the gear plate is engaged with a first rack and a second rack, and the first rack and the second rack are connected to the mounting base.
10. The apparatus of claim 8, wherein the adjustment unit comprises a motor, an output shaft of the motor is connected to a first gear, the first gear is engaged with a gear plate for transmission, a second gear is coaxially disposed on the gear plate, the gear is engaged with a first rack and a second rack, and the first rack and the second rack are connected to the mounting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221493008.2U CN217794139U (en) | 2022-06-15 | 2022-06-15 | Light-emitting device and myopia treatment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221493008.2U CN217794139U (en) | 2022-06-15 | 2022-06-15 | Light-emitting device and myopia treatment instrument |
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| Publication Number | Publication Date |
|---|---|
| CN217794139U true CN217794139U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221493008.2U Active CN217794139U (en) | 2022-06-15 | 2022-06-15 | Light-emitting device and myopia treatment instrument |
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|---|---|
| CN (1) | CN217794139U (en) |
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- 2022-06-15 CN CN202221493008.2U patent/CN217794139U/en active Active
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