CN217489561U

CN217489561U - Light feeding instrument for myopia prevention and control

Info

Publication number: CN217489561U
Application number: CN202220413209.0U
Authority: CN
Inventors: 杨永健
Original assignee: Beijing Akihito Ciba Vision Technology Co ltd
Current assignee: Beijing Akihito Ciba Vision Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-09-27
Anticipated expiration: 2032-02-28

Abstract

The utility model relates to a light-feeding instrument for myopia prevention and control, which comprises a shell; the two lens cones are fixed in the shell side by side, and the front ends of the lens cones are provided with first lenses; the lens barrel is embedded at the rear end of the lens barrel, a light source assembly is installed at the rear end of the light barrel, a lens assembly is arranged at the front end of the light barrel, a through hole is formed in the end face of the front end of the light barrel, a shading area is arranged on the lens assembly, and light beams emitted by the light source assembly penetrate through the lens assembly, the through hole and the first lens to form light spots with different illumination intensities. The utility model discloses a power of the different parts of adjustment beam cross section to form the facula of different illumination intensity, thereby can accomplish the protection to the macula lutea fovea region.

Description

Light feeding instrument for myopia prevention and control

Technical Field

The utility model belongs to the technical field of laser processing, concretely relates to myopia prevention and control is with feeding light appearance.

Background

Currently, most of the light-feeding instruments for myopia prevention and control use laser diodes as light sources. When the laser light source is used for preventing and controlling myopia, laser beams directly enter eyes of a patient through pupils and directly reach fundus retinas. Laser beams emitted by the light source are not finely controlled, the light power within the cross section range of the light beams is uniformly distributed, and special protection measures are not taken for macular fovea.

The laser beam is high-energy light, and the laser is directly used for irradiating the eyeground, so that huge pathogenic risks exist for cone cells in a macular area of the retina. Once the laser beam causes substantial damage to the macular region, irreversible loss of vision results.

The CN215131448U provides a light feeding instrument, which comprises a light feeding instrument main body, the light feeding instrument main body is provided with a light transmission channel, the inlet end of the light transmission channel is provided with a light source device, and the outlet end of the light transmission channel is provided with an eye cover; the light source device is electrically connected with the control device; the light source device comprises a myopia prevention and control light source, an amblyopia prevention and control light source and a hyperopia prevention and control light source; although the light emitted by the light source device can be effectively acted on the eyes of the user through the light transmission channel and the eye mask, the vision prevention and control effect is obvious; through the mutual cooperation of myopia prevention and control light source, amblyopia prevention and control light source and hyperopia prevention and control light source, act on the eye through the light that sends different wave bands, and then play myopia prevention and control, the effect of amblyopia treatment and hyperopia degree of falling, application scope is extensive. However, this solution does not preset and adjust the power distribution of the cross-section of the light beam during the treatment process, and does not satisfy the requirement of protecting the fovea maculata.

If CN213608018U provides a light feeding instrument capable of adjusting according to the interpupillary distance, which comprises a base and a lens, wherein the lens comprises a protective cover, lens barrels and an observation component, and is further provided with a interpupillary distance adjusting device, which comprises a knob and two sets of front and back parallel toothed plate sets, wherein the toothed plate sets comprise an upper toothed plate portion and a lower toothed plate portion which are parallel up and down and two lantern rings, the lantern rings are respectively arranged at the lower ends of the upper toothed plate portion and the lower toothed plate portion and are respectively sleeved at the outer ends of the two lens barrels, one end of the knob extends outwards to form a gear portion, the gear portion is arranged between the upper toothed plate portion and the lower toothed plate portion and is in mutual meshing transmission, and the gear portion is driven by rotating the knob to perform transverse displacement so as to realize the distance adjustment of the two lens barrels; although rotate through the knob and drive the toothed plate group and carry out the interval that two lens barrels were realized to horizontal relative displacement for more accurate cooperation user of lens barrel improves and uses experience sense and comfort level. However, the technical scheme is complex, the precision of the required components is high, and the central fovea region of the macula lutea cannot be well protected.

Therefore, how to design a safe, reliable, simple and easy-to-operate device for protecting the central depression of the macula is a technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the above-mentioned prior art, the utility model aims to provide a myopia prevention and control is with feeding light appearance, shines the route through setting up the shading area on the light source, realizes adjusting the effect of the different regional power of light beam cross section to the realization shines or weakens and shines corresponding regional enhancement.

The utility model provides a myopia prevention and control is with feeding light appearance, a serial communication port, include:

a housing;

the two lens cone structures are fixed in the shell side by side, and a first lens is arranged at the front end of each lens cone structure;

the lens barrel structure comprises a lens barrel structure, a light source assembly is arranged at the rear end of the light barrel structure in a nested mode, a lens assembly is arranged at the front end of the light barrel structure, a through hole is formed in the end face of the front end of the light barrel structure, a shading area is arranged on the lens assembly, and light beams emitted by the light source assembly penetrate through the lens assembly, the through hole and the first lens to form light spots with different illumination intensities.

The rear end of the light cylinder is provided with an opening, and the light source assembly is detachably fixed with the opening;

the lens assembly is arranged in the light cylinder in a sliding mode and is abutted and fixed with the light source assembly through the elastic assembly.

The lens assembly comprises a second lens and plane glass, the plane glass is fixedly abutted against the end face of the front end of the light cylinder, and the light shading area is arranged on the plane glass.

The shading area is circular, and the circle center of the shading area coincides with the axis of the through hole.

The horizontal distance between the light source assembly and the second lens is 1-50mm, the horizontal distance between the second lens and the plane glass is 0.5-50mm, and the diameter of the through hole is 0.5-20 mm; the area ratio of the shading area to the through hole is 0.02-0.5.

And after being received by the lens assembly, the light beams emitted by the light source assembly are converged at the focus of the first lens.

The light feeding instrument comprises a folding supporting component arranged at the bottom of the shell, the folding supporting component comprises an inclined supporting plate and a supporting bottom plate, the inclined supporting plate, the supporting bottom plate and the bottom of the shell are sequentially hinged, at least one groove is formed in the bottom of the shell, and the groove is used for accommodating one side, far away from the supporting bottom plate, of the inclined supporting plate.

Wherein the light instrument further comprises an adjusting assembly for adjusting the distance between the two light cylinders, the adjusting assembly comprising a driving mechanism and at least one set of sliding mechanisms;

the driving mechanism is used for driving the two light cylinders to move on the sliding mechanism, so that the distance between the two light cylinders is adjusted.

The sliding mechanism comprises two splayed sliding rails and a sliding block arranged on the sliding rails in a sliding mode, the two sliding rails correspond to the two first lenses respectively in position, the optical tube is fixed on the sliding block, and a row of saw teeth parallel to the sliding rails where the optical tube is arranged are arranged on the sliding block;

and a gear meshed with the saw teeth is fixed on the driving mechanism, and the light tube on the sliding block is driven to slide along the direction of the sliding rail through the gear.

The light feeding instrument comprises two eyecups fixed on the shell, and the positions of the eyecups correspond to the position of the first lens.

The utility model discloses a feed light appearance safe and reliable, simple and convenient easy operation can effectual control light source send the power distribution of light beam on the cross section. The light feeding instrument realizes the effect of adjusting the power of different areas of the cross section of a light beam by arranging the shading area on the irradiation path of the light source so as to form light spots with different illumination intensities, thereby reducing the illumination power received by the fovea centralis.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the accompanying drawings, which are meant to be exemplary and not limiting, several embodiments of the invention are shown and indicated by the same or corresponding reference numerals, wherein:

FIG. 1 is an exploded view of the inside of a light fostering apparatus for preventing and controlling myopia according to the embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a light beam propagating along a device component according to an embodiment of the present invention.

Description of reference numerals: the lens comprises a shell 1, a first lens 2, a light tube 3, a light source component 31, a lens component 32, a second lens 321, a plane glass 322, a through hole 33, a shading area 34, an elastic component 35, a sliding mechanism 4, a sliding rail 41, a sliding block 42, a sawtooth 43, a steering gear 44 and a gear 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device in which the element is contained.

The present invention will be described in detail with reference to the following embodiments.

As shown in fig. 1-2, the present embodiment provides a light instrument for myopia prevention and control, comprising:

a housing 1;

two lens cone structures which are fixed in the shell 1 side by side, wherein the front end of the lens cone structures is provided with a first lens 2;

the light tube 3 is nested at the rear end of the lens barrel structure, the light source assembly 31 is installed at the rear end of the light tube 3, the lens assembly 32 is arranged at the front end, the through hole 33 is formed in the end face of the front end, the lens assembly 32 is provided with the shading area 34, and light beams emitted by the light source assembly 31 penetrate through the lens assembly 32, the through hole 33 and the first lens 2 to form light spots with different illumination intensities. Wherein the light source assembly 31, the through hole 33 and the axis of the first lens 2 coincide. The lens barrel structure may be limited to a cylindrical structure, or may be a structure (the first lens 2, the optical cylinder 3, and the like) included only in a cylindrical region.

In this embodiment, by providing the shading area 34 on the lens assembly 32, the power distribution of the light beam passing through the lens assembly 32 can be adjusted, and the effect of adjusting the power of different areas of the cross section of the light beam is achieved, so that when the light beam reaches the fundus retina, there are only few or no light rays in the area corresponding to the shading area 34, and the effect of protecting the fovea maculae can be achieved.

In this embodiment, for controlling the beam power emitted by the light source module 31 in real time, the voltage and the current of the light source module 31 can be monitored in real time, so as to obtain the actual output power thereof, and when the output power is higher than the predetermined power, the voltage or the current of the light source module 31 is controlled by setting the processor, so as to ensure that the beam power emitted by the light source module 31 is within the predetermined range, thereby avoiding the occurrence of potential safety hazard to the eyes due to too high beam power.

The light source assembly 31 for providing light beams in this embodiment may be selected from different types according to different applications. In an actual application scenario, the light source assembly 31 of this embodiment may be a laser light source device, where the laser light source device adopts a laser diode, and laser emitted by a tube core of the laser diode is a light beam. In addition, the laser diode of the embodiment may include an LD anode, an LD cathode, a PD anode, a PD cathode, an LD socket, and a die; the LD tube base is fixedly connected with the light tube 3, the LD anode, the LD cathode, the PD anode and the PD cathode are arranged outside the light tube 3, the tube core is arranged inside the light tube 3, and the laser diode emits light beams through the tube core.

The lens assembly 32 and the light source assembly 31 in this embodiment are both installed in the light cylinder 3, and the structures of the lens assembly 32 and the light source assembly 31 can be selected accordingly in order to install them. In an application scenario, an opening is formed at the rear end of the light tube 3 in this embodiment, and the light source assembly 31 is detachably fixed to the opening; the lens assembly 32 is slidably disposed in the light tube 3, and is abutted and fixed to the light source assembly 31 through an elastic assembly 35. Wherein, lens subassembly 32 makes it support to hold on the lateral wall of light section of thick bamboo 3 (seted up through-hole 33 on this lateral wall) owing to elastic component 35's effect, fixes light source subassembly 31, can accomplish the relative fixed of light section of thick bamboo 3, lens subassembly 32 and light source subassembly 31 to make light section of thick bamboo 3 can generate the light beam that gets into the eye. In another application scenario, the light source assembly 31 may be directly fixed in the light tube 3 by means of an adhesive seal. In an actual application scenario, the light source assembly 31 and the opening of the present embodiment may be fixedly connected by a thread, or may be fixed by a glue seal for secondary encapsulation.

In the embodiment, when the light source assembly 31 is used for myopia prevention and control, the lens assembly 32 bundles the light beam emitted by the light source assembly 31 and then acts on the eye, the lens assembly 32 may include a second lens 321 and a plane glass 322, the plane glass 322 abuts against and is fixed on the end surface of the front end of the optical cylinder 3, and the light shielding region 34 is arranged on the plane glass 322. By positioning the light-shielding region 34 in the through hole 33, the light beam can be made to pass through the light-shielding region 34 when passing through the through hole 33, so that the beam power in the cross section of the light beam passing through the through hole 33 can be adjusted, whereby the foveal region of the macula of the eye can be protected. In order to ensure that the portion of the cross section of the light beam entering the eye corresponding to the light-shielding region 34 irradiates the foveal region of the macula, the light-shielding region 34 may be set to be circular, and the center of the light-shielding region 34 may coincide with the axis of the through hole 33. When the light beam that light source subassembly 31 sent can be observed to the eye, macula lutea fovea, through-hole 33 and light source subassembly 31 are in three points one-line, and the region that the regional 34 shelters from of shading this moment is the fovea region in macula lutea fovea, therefore, this application can protect the macula lutea fovea region of eye through regional 34 of shading.

In a practical application scenario, in order to ensure that the low-power light beam passing through the shading area 34 can cover the foveal region of the macula, various parameters of the light supplying instrument may be defined, so that an area formed by the light beam passing through the shading area 34 and corresponding to the foveal region of the macula meets a requirement. Specifically, the horizontal distance between the light source assembly 31 and the second lens 321 in this embodiment is 1-50mm, the horizontal distance between the second lens 321 and the plane glass 322 is 0.5-50mm, and the diameter of the through hole 33 is 0.5-20 mm; the ratio of the radius of the light-shielding region 34 to the area of the through-hole 33 is 0.02-0.5.

In order to ensure the effect of using the light instrument, the structure of the light instrument can be set so that the light beam finally irradiated into the eye by the light instrument is a parallel light beam. In a practical application scenario, the present embodiment may adjust the positions of the light cylinder 3 and the first lens 2, so that the position of the light cylinder 3 disposed in the lens barrel structure satisfies: the light beam emitted by the light source assembly 31 is converged at the focal point of the first lens 2 after being converged by the lens assembly 32. So that the light beam emitted from the light source assembly 31 finally passes through the first lens 2 to form a parallel light beam. The present embodiment can adjust the distance between the second lens 321 and the laser diode to change the size of the outgoing beam when the size of the outgoing beam is adjusted by the processor. On the basis, in order to ensure that the used light beam is still a parallel light beam when passing through the first lens 2 (convex mirror), the distance between the light tube 3 and the first lens 2 can be adjusted while the distance between the second lens 321 and the light source assembly 31 is adjusted; for example, when the second lens 321 and the light source assembly 31 have different distances, the distance between the adjusting light cylinder 3 and the first lens 2 is increased or decreased synchronously, so that the embodiment can ensure that the emergent light beam of the spectrometer is a parallel light beam when the size of the emergent light beam is adjusted.

In the actual use process, the light feeding instrument of the embodiment is suitable for different users, and the pupil distances of different users are different, so that the distance between the two light cylinders 3 can be adjusted by setting a corresponding structure, so that the light feeding instrument can meet users with different pupil distances. In practical application scenarios, the light instrument of the present embodiment may further include an adjusting assembly for adjusting the distance between the two light cylinders 3, the adjusting assembly includes a driving mechanism and at least one set of sliding mechanisms 4; the driving mechanism is used for driving the two light cylinders 3 to move on the sliding mechanism 4, so that the distance between the two light cylinders 3 is adjusted. The sliding mechanism 4 of this embodiment may include two splayed sliding rails 41 and a sliding block 42 slidably disposed on the sliding rails 41, the two sliding rails 41 correspond to the two first lenses 2, the optical tube 3 is fixed on the sliding block 42 and slides along with the sliding block 42, and the sliding block 42 is provided with a row of saw teeth 43 parallel to the sliding rail 41 where the optical tube is located; the driving mechanism is fixed with a gear 5 engaged with the saw teeth 43, and the gear 5 drives the light tube 3 on the slide block 42 to slide along the direction of the slide rail 41. Wherein, the positions of two slide rails 41 correspond to two first lenses 2 respectively, specifically are: when the slider 42 slides on the slide rail 41, the laser emitted from the light tube 3 always irradiates the first lens 2; further, the axis of the light cylinder 3 fixed to the slider 42 is parallel to the axis of the first lens 2. In the adjusting process, the driving mechanism drives the gear 5 to rotate forward and backward, so that the sliding block 42 slides back and forth along the sliding rail 41, thereby achieving the purpose of adjusting the distance between two optical cylinders 3, and due to the inclined arrangement of the sliding rail 41, the distance between the optical cylinder 3 and the first lens 2 can be adjusted while the distance between adjacent optical cylinders 3 is adjusted, thereby achieving the purpose of adjusting the size of the light beam passing through the first lens 2. When the driving mechanism of the embodiment drives the sliding blocks 42 to slide through the gear 5, in order to ensure that the two sliding blocks 42 move in the same direction, two steering gears 44 which are meshed with each other may be additionally arranged, and the two steering gears 44 are respectively meshed with the saw teeth 43 on the two sliding blocks 42, and one of the steering gears 44 is meshed with the gear 5 fixed on the driving mechanism, so that when the driving gear 5 of the driving mechanism rotates, the two steering gears 44 are driven to rotate, and the two sliding blocks 42 move in the same direction through the action of the two steering gears 44.

In the actual use process of the light feeding instrument, the light feeding instrument needs to be ensured to have a certain angle and height, and the structure of the light feeding instrument can be set in the embodiment. In practical application scenarios, the light feeding instrument of the present embodiment may include a foldable support assembly disposed at the bottom of the housing 1, where the foldable support assembly includes a slanted supporting plate and a supporting bottom plate (not shown in the figure), the slanted supporting plate, the supporting bottom plate and the bottom of the housing 1 are sequentially hinged, and the bottom of the housing 1 is provided with at least one groove for accommodating one side of the slanted supporting plate away from the supporting bottom plate. When the light instrument is used, the supporting bottom plate can be opened at a proper angle so that the angle of the light instrument meets the preset requirement, and then the inclined strut plate is inserted into the groove at a certain corresponding position, so that the shell 1 is supported, and the supported state is the state after the angle and the height of the light instrument are adjusted. In this embodiment, in order to store the inclined supporting plate and the supporting bottom plate when the light instrument is not used, a storage groove may be provided at the bottom of the housing 1, and when the light instrument is not used, the inclined supporting plate and the supporting bottom plate may be stored in the storage groove, so that the storage may be completed, and the light instrument of this embodiment may be more beautiful after being stored.

Because the user can keep a posture for a certain time when using the light-feeding instrument and the eyes are the fragile places of the human body, the light-feeding instrument of the embodiment is provided with a corresponding structure to ensure the comfort of the user. In practical application scenarios, the light instrument of the present embodiment may include two eye cups (not shown in the figure) fixed on the housing 1, and the positions of the eye cups correspond to the position of the first lens 2. The eye patch is made of flexible materials, and can buffer and protect eyes, so that the comfort of a user is improved.

The above description of the preferred embodiments of the present invention is intended to make the spirit of the present invention clearer and more comprehensible, and is not intended to limit the present invention, and all modifications, replacements, and improvements made within the spirit and principles of the present invention should be included within the scope of protection outlined in the claims appended hereto.

Claims

1. A light-feeding instrument for myopia prevention and control is characterized by comprising:

a housing (1);

the lens barrel structure comprises two lens barrel structures which are fixed in the shell (1) side by side, wherein a first lens (2) is arranged at the front end of each lens barrel structure;

the lens barrel is nested in the light barrel (3) at the rear end of the lens barrel structure, a light source assembly (31) is installed at the rear end of the light barrel (3), a lens assembly (32) is arranged at the front end, a through hole (33) is formed in the end face of the front end, a shading area (34) is arranged on the lens assembly (32), and light beams emitted by the light source assembly (31) penetrate through the lens assembly (32), the through hole (33) and light spots with different illumination intensities are formed behind the first lens (2).

2. The light feeding instrument as claimed in claim 1, wherein an opening is provided at the rear end of the light cylinder (3), and the light source assembly (31) is detachably fixed to the opening;

the lens assembly (32) is arranged in the light cylinder (3) in a sliding mode and is fixedly abutted to the light source assembly (31) through an elastic assembly (35).

3. The light feeding apparatus as claimed in claim 1, wherein said lens assembly (32) comprises a second lens (321) and a plane glass (322), said plane glass (322) is held against an end surface fixed to a front end of said light tube (3), and said light shielding region (34) is disposed on said plane glass (322).

4. A light instrument as claimed in any one of claims 1 to 3, wherein said light-shielding region (34) is circular, the center of said light-shielding region (34) coinciding with the axis of said through hole (33).

5. The light feeding instrument as recited in claim 3, wherein the horizontal distance between the light source assembly (31) and the second lens (321) is 1-50mm, the horizontal distance between the second lens (321) and the plane glass (322) is 0.5-50mm, and the diameter of the through hole (33) is 0.5-20 mm; the area ratio of the shading area (34) to the through hole (33) is 0.02-0.5.

6. The light feeding apparatus of claim 4,

and after being converged by the lens component (32), the light beams emitted by the light source component (31) are converged at the focus of the first lens (2).

7. The light feeding instrument as recited in claim 1, comprising a folding support component disposed at the bottom of the housing (1), wherein the folding support component comprises a slanting board and a support bottom board, the slanting board, the support bottom board and the bottom of the housing (1) are hinged in sequence, and the bottom of the housing (1) is provided with at least one groove for accommodating a side of the slanting board away from the support bottom board.

8. A foster light instrument as in claim 1, further comprising an adjustment assembly for adjusting the distance between two said light cylinders (3), said adjustment assembly comprising a driving mechanism and at least one set of sliding mechanisms (4);

the driving mechanism is used for driving the two light cylinders (3) to move on the sliding mechanism (4), so that the distance between the two light cylinders (3) can be adjusted.

9. The light feeding instrument of claim 8, wherein the sliding mechanism (4) comprises two splayed sliding rails (41) and a sliding block (42) slidably disposed on the sliding rails (41), the two sliding rails (41) are respectively corresponding to the two first lenses (2), the optical tube (3) is fixed on the sliding block (42), and the sliding block (42) is provided with a row of saw teeth (43) parallel to the sliding rail (41) on which the sliding block is disposed;

a gear (5) meshed with the saw teeth (43) is fixed on the driving mechanism, and the light tube (3) on the sliding block (42) is driven to slide along the direction of the sliding rail (41) through the gear (5).

10. A fostering light instrument as in claim 1, comprising two eye shields fixed to said housing (1), the position of said eye shields corresponding to the position of said first lens (2).