CN221084444U - Vision eye protection instrument with multiple light power protection - Google Patents
Vision eye protection instrument with multiple light power protection Download PDFInfo
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- CN221084444U CN221084444U CN202321989050.8U CN202321989050U CN221084444U CN 221084444 U CN221084444 U CN 221084444U CN 202321989050 U CN202321989050 U CN 202321989050U CN 221084444 U CN221084444 U CN 221084444U
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- 239000011521 glass Substances 0.000 description 1
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- 230000004379 myopia Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model discloses a vision eye protection instrument with multiple optical power protection, which comprises: two light sources for nursing light are arranged on left and right eye barrels of the vision eye protection instrument, and red LED lamp beads are adopted; the two constant current driving circuits are used for driving the two light source for feeding light respectively; the constant current driving circuit comprises a current limiting resistor, wherein the current limiting resistor comprises two or more resistors connected in parallel; the microprocessor is connected with the constant current driving circuit and used for adjusting the output of the constant current driving circuit; the two light-transmitting sheets are semitransparent medium sheets and are respectively fixed on the left eye cylinder and the right eye cylinder and arranged between the light-feeding light source and human eyes, and light emitted by the light-feeding light source enters the human eyes through the light-transmitting sheets. The vision eye protection instrument provides multiple optical power protection, ensures stable optical power output and ensures uniform ocular power, thereby enhancing the use safety of equipment and reducing the risk of injury to eyeballs caused by abnormal equipment operation.
Description
Technical Field
The utility model relates to the field of vision eye protection instruments, in particular to a vision eye protection instrument with multiple optical power protection.
Background
The light instrument is an external therapeutic device which irradiates eyes by weak laser, is one of vision eye protection instruments, irradiates eyes by low-intensity red light, applies light wave stimulation to human eyeground, improves eyeground microcirculation, promotes retina to secrete dopamine to regulate eye wheelbase, and realizes control of vision. The light-feeding instrument has certain beneficial effects on myopia of children.
Current light meter products are designed based on red lasers. The adoption of the red laser can burn the eyeground of a user due to the uncontrolled optical power, the eyeground of the user is easily damaged due to the uneven optical power distribution of the red laser, and the psychological panic of a purchaser is easily caused by the red laser, so that the sales of the product cannot reach the expectations.
Disclosure of utility model
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an eye-protecting device with multiple optical power protection, which can provide nursing fundus physical therapy while preventing the nursing fundus from being burnt due to uncontrolled nursing optical power.
In order to achieve the above object, the present utility model provides a vision eye protection device with multiple optical power protection, comprising:
Two light sources for nursing light are arranged on left and right eye barrels of the vision eye-protection instrument, and red light LED lamp beads with specific wavelength are adopted;
The two constant current driving circuits are used for driving the two light source for feeding light respectively; the constant current driving circuit comprises a current limiting resistor, wherein the current limiting resistor comprises two or more resistors connected in parallel;
The microprocessor is connected with the constant current driving circuit and used for adjusting the output of the constant current driving circuit;
And the two light-transmitting sheets are semitransparent medium sheets and are respectively fixed on the left eye cylinder and the right eye cylinder and are arranged between the light-feeding light source and human eyes, and light emitted by the light-feeding light source enters the human eyes through the light-transmitting sheets.
Further, the dominant wavelength of the nursing light source is 650nm.
Furthermore, the semitransparent medium sheet is a lambertian body, one surface of the semitransparent medium sheet facing the inside of the eye cylinder is a rough matte plane, the other surface of the semitransparent medium sheet is a smooth transparent convex surface, and point light emitted by the light source is converted into a planar light source with uniform brightness after passing through the semitransparent medium sheet.
Further, the constant current driving circuit comprises a first semiconductor switching tube, a second semiconductor switching tube and a current limiting resistor; the control end of the first semiconductor switching tube is connected with the input end of the second semiconductor switching tube and then is electrically connected with the microprocessor; the control end of the first semiconductor switching tube is connected with the output end of the second semiconductor switching tube and is grounded through the current limiting resistor; the output end of the first semiconductor switching tube is grounded; the input end of the second semiconductor switch tube is connected with one end of the light source, and the other end of the light source is connected with the driving power supply of the light source.
Further, the semiconductor switch tube is a triode or a MOS tube.
Further, the vision eye protection instrument further comprises a rechargeable battery and an NTC protection circuit, wherein the NTC protection circuit is connected with the microprocessor and is close to the rechargeable battery, and the vision eye protection instrument is used for collecting the surface temperature of the rechargeable battery.
Compared with the prior art, the utility model has the advantages that:
The vision eye protection instrument provides various optical power protection, ensures stable optical power output, and avoids risk caused by power surge under abnormal conditions; and the ocular power is more uniform, so that the use safety of the equipment is enhanced, and the risk of damage to eyeballs caused by abnormal operation of the equipment is reduced.
Drawings
FIG. 1 is an exploded view of the vision eye-protecting instrument of the present utility model;
Fig. 2 is a cross-sectional view of the vision eye-protecting instrument of the present utility model;
FIG. 3 is a diagram of a single chip microcomputer and peripheral circuits used in the present utility model;
FIG. 4 is a constant current drive circuit diagram of a nursing light source of the present utility model;
fig. 5 is a diagram of an NTC protection circuit of the present utility model.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model.
The utility model will now be further described with reference to the drawings and detailed description.
Example 1
As shown in fig. 1 and 2, the embodiment provides a vision eye protection instrument with multiple optical power protection, which has a light feeding function and is composed of a lens frame assembly 1, eye cylinder assemblies 2 and 3, an interpupillary distance adjusting assembly 4, a circuit assembly 5 and the like.
Wherein, the picture frame assembly comprises a first assembly 11, a second assembly 12, a lacing 13 and the like, and forms the appearance structure of the vision eye protection instrument.
The circuit component 5 provides power and drive control for the vision eye protection instrument and comprises a power circuit, a singlechip control circuit, a constant current control circuit and other circuits for driving the eye tube component.
The eye tube assemblies 2 and 3 are main functional components of the vision eye protection instrument, for example, the eye tube assembly 2 consists of a lamp panel 21, an eye tube 22, a sealing ring 23, a light-transmitting sheet 24, an eye tube cover 25 and the like. The lamp panel 21 and the light-transmitting sheet 24 are arranged at two ends of the eye tube 22, and the sealing ring 23 and the eye tube cover 25 are used for fixing the light-transmitting sheet 24 on the eye tube 22 and providing an anti-shake function. The lamp panel 21 is provided with a light source for nursing light, and in a use state, light emitted by the light source for nursing light enters eyes of a user after passing through the light-transmitting sheet 24.
The vision eye protection instrument performs optical power protection by the following modes:
1. And (3) structural protection: the light source adopts red light LED lamp beads with special wavelength (the dominant wavelength is 650 nm); the light-transmitting sheet 24 is a translucent medium sheet made of glass or resin. Specifically, one surface of the light-transmitting sheet 24 facing the inside of the eye tube 22 is a rough matte plane, and the other surface is a smooth transparent convex surface. The distance between the light transmitting sheet 24 and the light transmitting light source and the convex curvature of the light transmitting sheet 24 are selected, so that the light transmitting sheet 24 can be designed into a lambertian structure, and the light transmitting sheet 24 can form a lambertian light source, namely a surface light source with uniform brightness.
2. And (3) circuit protection:
(1) In this embodiment, the nursing light source in each eye drum is controlled by a set of independent constant current drive circuits, as shown in fig. 4.
(2) In this embodiment, the constant current driving circuit of one of the light sources includes resistors R30, RX8, RX9, transistors Q9, Q19, and the like. Wherein RX8 and RX9 are current limiting resistors connected in parallel. The current limiting resistor limits the maximum current output of the constant current driving circuit, when one of the resistors fails (breaks), the resistance value of the current limiting resistor increases, the driving current decreases, and the optical power output decreases. In a specific application, the current limiting resistor may adopt a mode of connecting a plurality of resistors (more than 2) in parallel.
(3) In this embodiment, the circuit assembly further includes a single chip microcomputer U1, as shown in fig. 3. The singlechip U1 is connected with each constant current driving circuit for independent control, and can adjust the output of the constant current driving circuit in a PWM mode so as to adjust the output light power.
(4) In this embodiment, the vision eye-protection device is powered by a rechargeable battery. The circuit component is also provided with an NTC protection circuit, the NTC protection circuit is connected with the singlechip U1 and is attached to the rechargeable battery, and the NTC protection circuit is used for collecting the temperature of the surface of the rechargeable battery so as to carry out charging temperature rise management and improve equipment safety. As shown in fig. 4 and 5.
The vision eye protection instrument of the embodiment has the following technical effects:
the present vision eye-protection instrument provides a variety of optical power protection, including:
1. the driving of the light source is driven by a constant current circuit, so that the light power is protected again at the source;
2. The circuit design protection of the optical power is that the current limiting resistor of the constant current circuit adopts a resistor parallel connection mode, so that even if the current limiting resistor is partially failed (broken), the optical power is reduced, and the protection is the second protection, so that the risk caused by power surge in the abnormal situation is avoided;
3. The design of the ocular light protection is enhanced, a lambertian baffle is designed, ocular power is more uniform, and the risk of damage to eyeballs caused by uneven optical power is further reduced, which is third triple protection;
4. The light power is subjected to multi-gear stepless dimming control in a PWM mode, so that the light power can be finely adjusted and regulated for users with different vision conditions, and the light power is safer and more targeted to use.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. A vision eye-protecting instrument with multiple optical power protection, comprising:
Two light sources for nursing light are arranged on left and right eye barrels of the vision eye-protection instrument, and red light LED lamp beads with specific wavelength are adopted;
The two constant current driving circuits are used for driving the two light source for feeding light respectively; the constant current driving circuit comprises a current limiting resistor, wherein the current limiting resistor comprises two or more resistors connected in parallel;
The microprocessor is connected with the constant current driving circuit and used for adjusting the output of the constant current driving circuit;
And the two light-transmitting sheets are semitransparent medium sheets and are respectively fixed on the left eye cylinder and the right eye cylinder and are arranged between the light-feeding light source and human eyes, and light emitted by the light-feeding light source enters the human eyes through the light-transmitting sheets.
2. The eye-protecting device with multiple light power protection of claim 1, wherein the dominant wavelength of the nursing light source is 650nm.
3. The vision eye-protection instrument with multiple light power protection according to claim 1, wherein the semitransparent medium sheet is a lambertian body, one surface of the semitransparent medium sheet facing the inside of the eye cylinder is a rough matte plane, the other surface of the semitransparent medium sheet is a smooth transparent convex surface, and point light emitted by the light source is converted into a planar light source with uniform brightness after passing through the semitransparent medium sheet.
4. The vision eye-protecting instrument with multiple optical power protection of claim 1, wherein the constant current driving circuit comprises a first semiconductor switching tube, a second semiconductor switching tube and a current limiting resistor; the control end of the first semiconductor switching tube is connected with the input end of the second semiconductor switching tube and then is electrically connected with the microprocessor; the control end of the first semiconductor switching tube is connected with the output end of the second semiconductor switching tube and is grounded through the current limiting resistor; the output end of the first semiconductor switching tube is grounded; the input end of the second semiconductor switch tube is connected with one end of the light source, and the other end of the light source is connected with the driving power supply of the light source.
5. The vision eye-protecting instrument with multiple optical power protection according to claim 4, wherein the semiconductor switch tube is a triode or a MOS tube.
6. The vision eye-protection device with multiple optical power protection of claim 1, further comprising a rechargeable battery and an NTC protection circuit, wherein the NTC protection circuit is connected to the microprocessor and is proximate to the rechargeable battery for collecting the temperature of the surface of the rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321989050.8U CN221084444U (en) | 2023-07-27 | 2023-07-27 | Vision eye protection instrument with multiple light power protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321989050.8U CN221084444U (en) | 2023-07-27 | 2023-07-27 | Vision eye protection instrument with multiple light power protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221084444U true CN221084444U (en) | 2024-06-07 |
Family
ID=91327308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321989050.8U Active CN221084444U (en) | 2023-07-27 | 2023-07-27 | Vision eye protection instrument with multiple light power protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221084444U (en) |
-
2023
- 2023-07-27 CN CN202321989050.8U patent/CN221084444U/en active Active
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