CN113974957B - Lens barrel for fundus massage device and fundus massage device - Google Patents
Lens barrel for fundus massage device and fundus massage device Download PDFInfo
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- CN113974957B CN113974957B CN202111286478.1A CN202111286478A CN113974957B CN 113974957 B CN113974957 B CN 113974957B CN 202111286478 A CN202111286478 A CN 202111286478A CN 113974957 B CN113974957 B CN 113974957B
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- light source
- fundus
- light
- lens barrel
- housing
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- 238000001228 spectrum Methods 0.000 claims abstract description 90
- 210000001525 retina Anatomy 0.000 claims abstract description 30
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 230000005499 meniscus Effects 0.000 claims description 12
- 239000013307 optical fiber Substances 0.000 claims description 10
- 210000001747 pupil Anatomy 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 6
- 208000001491 myopia Diseases 0.000 abstract description 11
- 230000004379 myopia Effects 0.000 abstract description 10
- 230000005764 inhibitory process Effects 0.000 abstract description 3
- 230000036541 health Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000004423 myopia development Effects 0.000 abstract 1
- 210000001508 eye Anatomy 0.000 description 40
- 230000000694 effects Effects 0.000 description 7
- 238000005286 illumination Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 210000002189 macula lutea Anatomy 0.000 description 3
- 238000011269 treatment regimen Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004515 progressive myopia Effects 0.000 description 2
- 208000029091 Refraction disease Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004430 ametropia Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
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
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0613—Apparatus adapted for a specific treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
- A61N2005/0643—Applicators, probes irradiating specific body areas in close proximity
- A61N2005/0645—Applicators worn by the patient
- A61N2005/0647—Applicators worn by the patient the applicator adapted to be worn on the head
- A61N2005/0648—Applicators worn by the patient the applicator adapted to be worn on the head the light being directed to the eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0658—Radiation therapy using light characterised by the wavelength of light used
- A61N2005/0661—Radiation therapy using light characterised by the wavelength of light used ultraviolet
Abstract
The present application relates to a lens barrel for a fundus massage apparatus and a fundus massage apparatus. The lens barrel for the fundus massage device includes a housing having a first end and a second end; an eyepiece portion disposed within the housing proximate the first end and configured as a telecentric optical path; a light source section provided in the housing near the second end and having a light source surface on a side facing the eyepiece section, the light source section being configured to be switchable to emit projection light of different spectrums and to emit projection light of only one spectrum in a period of time; wherein the eyepiece portion is movably disposed along an optical axis within the housing so that a light source surface of the light source portion is conjugate with a fundus retina. The fundus massage device can project spectrums with myopia prevention or myopia development inhibition functions to fundus retina, and can effectively protect human eye health.
Description
Technical Field
The present application relates to an optical instrument, and more particularly, to a lens barrel for a fundus massage apparatus and a fundus massage apparatus.
Background
Myopia is a type of ametropia, mainly due to the elongation of the axial length of the eyeball. When the eye is in a condition of accommodation relaxation, parallel rays enter the eye, which focus in front of the retina, which results in a clear image not being formed on the retina. Myopia, the most common ophthalmic disease, is one of the diseases that is a serious health hazard worldwide. In the united states and europe, the incidence of myopia has doubled compared to 50 years ago. In east asia, the incidence of myopia has increased more by about 60% over the last 50 years. In recent years, in China, the incidence rate of myopia also has a remarkable rising trend, and the incidence rate has become a major public health problem affecting the eye health of Chinese people, especially teenagers.
The eye massage apparatus which has been developed in the prior art is mostly an external physical massage apparatus, for example, chinese patent application publication No. CN214415219U, published in 2021, 10, 19, "an eye massage apparatus", which is used for nursing eyes by means of physical massage around the surface of eyes. For example, the chinese patent application "eye massager" published in year 08, 10, 2021, CN113476293a also provides eye care around the surface of the eye by means of air, vibration, hot compress, etc. However, such an eye care device for external massage can only play a role in relieving muscles of tissues around eyes, and has poor effects in preventing or inhibiting myopia-type eye diseases.
Accordingly, there is a need in the industry to design a device that effectively prevents myopia or inhibits the progression of myopia.
Disclosure of Invention
The present application aims to provide a lens barrel which can solve at least the above-mentioned part of technical problems.
The application aims to provide a fundus massage device applying the lens barrel.
According to one aspect of the present application, there is provided a barrel for a fundus massage apparatus, comprising a housing having a first end and a second end; an eyepiece portion disposed within the housing proximate the first end and configured as a telecentric optical path; a light source section provided in the housing near the second end and having a light source surface on a side facing the eyepiece section, the light source section being configured to be switchable to emit projection light of different spectrums and to emit projection light of only one spectrum in a period of time; wherein the eyepiece portion is movably disposed along an optical axis within the housing so that a light source surface of the light source portion is conjugate with a fundus retina.
In some embodiments, the light source part includes a plurality of single spectrum light sources of different spectrums arranged on a cross section of the housing, and a scattering member is provided at a side of the plurality of single spectrum light sources facing the eyepiece part.
In some embodiments, the light source part includes a substrate arranged along a lateral direction of the housing, and the plurality of single spectrum light sources include a plurality of LEDs arranged on the substrate at uniform intervals.
In some embodiments, the light source section includes an optical fiber, the plurality of single-spectrum light sources are arranged at one end of the optical fiber, and the other end of the optical fiber is disposed toward the eyepiece section as a light exit end.
In some embodiments, the light source part includes: a broad spectrum light source configured to emit light of a plurality of spectrums simultaneously; and a filter arranged on a side of the wide spectrum light source facing the eyepiece portion; wherein the filter is replaceable.
In some embodiments, the broad spectrum light source is capable of emitting light in the light wave range of 360 nm to 750 nm.
In some embodiments, the eyepiece portion includes a first meniscus lens and a cemented lens arranged at intervals in a direction from the first end to the second end, wherein the cemented lens is joined by a biconvex lens proximate the first end and a second meniscus lens proximate the second end.
In some embodiments, the projected light of the light source section includes violet light having a light wave range of 360 nm to 400 nm.
According to another aspect of the present application, there is provided a fundus massage apparatus comprising: the lens barrel; an eye recognition assembly configured to recognize pupil positions; a moving platform drivingly connected to the housing, the moving platform configured to move the lens barrel toward the human eye based on the identified pupil position.
In some embodiments, the eye recognition assembly includes two cameras disposed laterally on opposite sides of the eyepiece portion within the housing.
Additional features and advantages of the application will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the application.
Drawings
Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic view of a first embodiment of a lens barrel of a fundus massage apparatus according to the present application;
fig. 2 is an optical path diagram of the lens barrel of fig. 1;
fig. 3 is a schematic view of a second embodiment of a lens barrel of the fundus massage apparatus according to the present application;
fig. 4 is an optical path diagram of the lens barrel of fig. 3.
Reference numerals illustrate:
1. a human eye recognition component; 11. a camera; 2. an eyepiece section; 21. a first meniscus lens; 22. a cemented lens; 221. a biconvex lens; 222. a second meniscus lens; 3,3', a light source part; 31. a single spectrum light source; 32. a broad spectrum light source; 33. a light filter; 4. a housing; 41. a first end; 42. a second end; 5. a lens barrel; 6. human eyes
Detailed Description
Referring now to the drawings, illustrative aspects of the lens barrel for a fundus massage apparatus and a fundus massage apparatus disclosed in the present application will be described in detail. Although the drawings are provided to present some embodiments of the application, the drawings are not necessarily to scale and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the present disclosure. The position of part of components in the drawings can be adjusted according to actual requirements on the premise of not affecting the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification do not necessarily refer to all figures or examples.
Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below" and other directional terms, will be understood to have their normal meaning and refer to those directions as they would be when viewing the drawings. Unless otherwise indicated, directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.
The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
The optical instrument according to the present application relates to a fundus massage device for "massaging" both eyes of a user to prevent myopia or inhibit the progression of myopia. The device can automatically aim at the pupil of a user and project light rays with a spectrum range with a myopia inhibition effect to the fundus retina, such as ultraviolet light with a wavelength range of 360-400 nanometers, and the fundus retina of the user is massaged through the irradiation of the projected light rays, so that the myopia prevention or inhibition effect is achieved.
The fundus massage apparatus of the present application will be described in detail with reference to specific examples.
The fundus massage apparatus according to an embodiment of the present application includes a chassis and a binocular tube mounted on the chassis for simultaneously massaging the fundus of the eyes. Or, a monocular lens barrel can be arranged on the underframe to massage the eyeground of the binocular eyes in sequence. The chassis itself may be configured as a movable platform to drive the lens barrel toward the corresponding human eye. Alternatively, a drive mechanism such as a movable platform may be coupled to the chassis to drive the lens barrel toward the corresponding human eye.
Fig. 1 and 2 show a first embodiment of a lens barrel for a fundus massage apparatus of the present application, in which only a single lens barrel is shown. In the case of the double barrel, the other barrel has the same structure as the illustrated barrel.
As shown in fig. 1 and 2, the lens barrel 5 is provided with an eyepiece portion 2 and a light source portion 3 inside a housing 4, wherein the light source portion 3 emits projection light in the form of light rays of only one spectrum for a certain period of time to illuminate a screen in front (i.e., a light source surface forming the light source portion 3), the screen being imaged on the fundus retina through the eyepiece portion 2. In the case where the screen is conjugate with the fundus retina, the projection light rays after passing through the eyepiece portion 2 fills the pupil of the human eye and finally converges on the fundus retina, thereby forming illumination of each region of the fundus retina including the macula lutea, and achieving a massage effect.
The housing 4 of the lens barrel 5 may have various suitable cross-sectional shapes including circular, elliptical, polygonal, etc. The cross-sectional shape may be constant along the axial direction of the housing 4 or may be varied, for example graded. The housing 4 has a first end 41 and a second end 42 in its own axial direction, wherein the first end 41 is the end relatively close to the human eye during use, also called "proximal end", and the second end 42 is the end relatively far from the human eye, also called "distal end".
The movement of the lens barrel 5 may be driven by a user or professional by means of, for example, a moving platform. Alternatively, in one aspect, the lens barrel 5 is connected to the human eye recognition assembly 1, the current position information of the human eye 6 is acquired and recognized by means of the human eye recognition assembly 1, and the moving platform is caused to drive the lens barrel 7 to move in at least one direction of XYZ directions based on the current position information, so that the lens barrel 5 is automatically aligned with the human eye 6. As shown in fig. 1, the eye recognition assembly 1 includes a pair of cameras 11 provided on a lens barrel 5. The pair of cameras 11 may be arranged on opposite sides of the eyepiece section 2 in the lateral direction of the lens barrel 7, either inside the housing 4 or outside the housing 4. The two cameras 11 are used for imaging the eye surface of a single human eye 6 from two directions, for example, videos formed by continuous pictures of a plurality of frames of images related to the eye surface are acquired, the current position of the human eye 6 is judged through a human eye recognition algorithm based on the acquired imaging results, the working position of the lens barrel 5 is judged based on the current position, and the lens barrel 7 is driven by the mobile platform to move to reach the working position, so that the human eye 6 is accurately aligned. Therefore, the lens barrel 5 can be prevented from deviating due to movement of a user by automatically aligning the human eyes, and automatic alignment of the lens barrel is realized.
The eyepiece portion 2 is disposed within the housing 4 proximate the first end 41. The human eye 6 can see through the eyepiece section 2 into the lens barrel 5. The eyepiece portion 2 may be fixed relative to the housing 4. However, in order to accommodate the visibility of different users, the eyepiece portion 2 is configured to be movable in the optical axis direction thereof (parallel to or coincident with the central axis of the housing 4 in this embodiment) in this embodiment. The movement of the eyepiece portion 2 can be completed by a user through driving a hand wheel connected to the eyepiece portion 2, and personal requirements of the user can be well met without professional intervention. In one embodiment, the transmission mechanism between the hand wheel and the eyepiece portion 2 may be a rack and pinion mechanism. Alternatively, the movement of the eyepiece portion 2 may be accomplished by a user by controlling a motor that is drivingly connected to the eyepiece portion 2, and the control means may be a button. Still alternatively, the movement of the eyepiece portion 2 may be accomplished automatically by means of an automatic recognition and drive mechanism. In one aspect, the automatic recognition and drive mechanism may determine whether the eyepiece portion 2 is in an appropriate position by acquiring and recognizing a convergence condition of the projected light of the light source portion 3 on the retina of the fundus of the user, such as correct convergence on the retina, not reaching the retina and convergence or convergence beyond the retina, and hold the eyepiece portion stationary or move the eyepiece portion based on the determination, thereby ensuring that the light source face of the light source portion 3 is conjugated with the retina of the fundus so that the light source face is clearly imaged on the fundus.
The eyepiece portion 2 may be constituted by a first meniscus lens 21 and a cemented lens 22 sequentially arranged in a direction from the first end 41 to the second end 42. The cemented lens 22 may be joined by a biconvex lens 221 near the first end 41 and a second meniscus lens 222 near the second end 42. In one version, the concave surface of the first meniscus 21 faces the first end 41 of the housing 4, the convex surface faces the second end 42 of the housing 4, and the radius of curvature of the concave surface is greater than the radius of curvature of the convex surface. In the cemented lens 22, the radius of curvature of the convex surface of the lenticular lens facing away from the second meniscus lens 222 is larger than the radius of curvature of the convex surface facing the second meniscus lens 222, and the radius of curvature of the concave surface of the second meniscus lens 222 facing the lenticular lens 221 is smaller than the radius of curvature of the convex surface facing away from the lenticular lens 221.
In one scheme, the eyepiece portion 2 adopts a design scheme of a telecentric light path, so that angles of light rays emitted by various points of the eyepiece portion 2 receiving the light source portion 3 are basically consistent, and luminous angles of light rays received by fundus retinas are basically consistent, thereby ensuring uniformity of illumination. In one embodiment, the telecentric beam path of the eyepiece portion 2 is designed as an object-side telecentric beam path.
The light source section 3 is fixedly provided at the second end 42 of the housing 4. In the present embodiment, the light source section 3 employs a plurality of single-spectrum light sources 31, such as LEDs, having different spectrums. These single-spectrum light sources 31 are mounted at uniform intervals on a substrate arranged in the lateral direction of the housing 4. The light emitted from the single-spectrum light source 31 illuminates the screen and is converged on the fundus retina by the eyepiece portion 2.
These single spectrum light sources 31 may include a plurality of single spectrum light sources of a first spectrum, a plurality of single spectrum light sources of a second spectrum (different from the first spectrum), a plurality of single spectrum light sources of a third spectrum (different from the first spectrum and the second spectrum), and so on. During the same period, only those single-spectrum light sources 31 of the same spectrum (e.g., the first spectrum) are controlled to emit light, while those single-spectrum light sources 31 of other spectrums (e.g., the second spectrum and the third spectrum) are controlled not to emit light. In the next period, the single-spectrum light sources 31 of the other spectrum (e.g., the second spectrum) may be switched to emit light, while those single-spectrum light sources 31 of the other middle spectrum (e.g., the first spectrum and the third spectrum) do not emit light, and so on. Which spectrum to choose during a time period may be determined based on the user's wrong preference or may be determined based on the treatment regimen.
In one embodiment, at least one of the plurality of spectra is 360 nm to 400 nm violet light.
A diffuser may be disposed in front of the substrate to make the light impinging on the screen more uniform, forming a uniform light source surface. The material of the scattering piece can be plastic or glass. In general, the larger the roughness of the surface of the scattering member, the larger the wide-angle coverage after scattering, the more uniform the light source surface can be formed, which is helpful for forming uniform illumination on the ocular fundus.
Fig. 3 and 4 show a second embodiment of a lens barrel for a fundus massage apparatus of the present application, in which only a single lens barrel is shown. In the case of the double barrel, the other barrel has the same structure as the illustrated barrel.
The second embodiment shown in fig. 3 and 4 differs from the first embodiment shown in fig. 1 and 2 in that the light source section 3 is replaced with a light source section 3' in the lens barrel 5.
The light source portion 3' is fixedly provided at the second end 42 of the housing 4. In the present embodiment, the light source section 3' employs a wide spectrum light source 32 which can emit light of a fixed range involving a plurality of spectrums, for example, light of 360 nm to 750 nm. A filter 33 is provided in front of the broad spectrum light source 32. The spectrum of the projected light of the light source section 3' can be controlled by changing the filter 33 of different wavelength bands. A plurality of filters 33 of different wavelength bands may be present in a kit and replaced according to user preference or treatment regimen. The single spectrum light emitted from the wide spectrum light source 32 and filtered by the filter 33 illuminates the screen to form a light source surface of the light source section 3' and is converged on the fundus retina by the eyepiece section 2.
In one version, at least one filter 33 allows only 360 nm to 400 nm of violet light to pass.
Similar to the first embodiment, a diffuser may be placed in front of the broad spectrum light source 32 to make the light impinging on the screen more uniform, forming a uniform light source surface. The material of the scattering piece can be plastic or glass. In general, the larger the roughness of the surface of the scattering member, the larger the wide-angle coverage after scattering, the more uniform the light source surface can be formed, which is helpful for forming uniform illumination on the ocular fundus.
Thus, the light source section 3' emits projection light in the form of light rays of only one spectrum for a certain period of time to illuminate a screen in front, and the screen is imaged on the fundus retina through the eyepiece section 2. In the case where the screen is conjugate with the fundus retina, the projection light rays after passing through the eyepiece portion 2 fills the pupil of the human eye and finally converges on the fundus retina, thereby forming illumination of each region of the fundus retina including the macula lutea, and achieving a massage effect.
In a third embodiment (not shown) of the lens barrel for the fundus massage apparatus of the present application, a difference from the first embodiment shown in fig. 1 and 2 is that the light source portion 3 is replaced with a third light source portion within a single lens barrel.
The third light source section includes an optical fiber and a plurality of single-spectrum light sources, such as LEDs, having different spectrums, mounted at one end of the optical fiber. The single spectrum light sources may be arranged at even intervals. The light emitted by the single-spectrum light source is transmitted by the optical fiber and then emitted out of the light emitting end of the optical fiber, which faces the ocular lens, and the light emitting end forms a uniform light emitting surface and is imaged on the retina of the fundus by the ocular lens.
The single spectrum light sources may include a plurality of single spectrum light sources of a first spectrum, a plurality of single spectrum light sources of a second spectrum (different from the first spectrum), a plurality of single spectrum light sources of a third spectrum (different from the first spectrum and the second spectrum), and so on. During the same time period, only those single spectrum light sources of the same spectrum (e.g., the first spectrum) are controlled to emit light, while those single spectrum light sources of other spectrums (e.g., the second spectrum and the third spectrum) are controlled to emit no light. In the next period, the single spectrum light sources of the other spectrum (e.g., the second spectrum) may be switched to emit light, while those of the other middle spectrum (e.g., the first and third spectrums) do not emit light, and so on. Which spectrum to choose during a time period may be determined based on the user's wrong preference or may be determined based on the treatment regimen.
In one embodiment, at least one of the plurality of spectra is 360 nm to 400 nm violet light.
Thus, the third light source unit emits the projection light in the form of light rays of only one spectrum for a certain period of time to form a light source surface, and the light source surface is imaged on the fundus retina through the eyepiece unit. When the light source surface is conjugate with the fundus retina, the projection light passes through the eyepiece portion, fills the pupil of the human eye, and finally converges on the fundus retina, so that each region of the fundus retina including the macula lutea is illuminated, and a massage effect is achieved.
The present application can also form a fourth embodiment in which the housing of the lens barrel is changed as compared with the first three embodiments. In this embodiment, the lens barrel constitutes a binocular, but instead of providing two separate housings, the two housings are connected to each other, and the interiors of the two housings communicate with each other, thereby forming a single housing structure that can be used for both purposes at the same time. In addition, the eyepiece portion and the light source portion in the first three embodiments may be alternatively selected. Thus, a fundus massage device which only emits one spectrum to illuminate the retina of the fundus can be formed in the same way.
It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The foregoing is illustrative of the present application and is not to be construed as limiting the scope of the application. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of this application, and it is intended to be within the scope of the application.
Claims (10)
1. A lens barrel for a fundus massage device, comprising
A housing (4) having a first end (41) and a second end (42);
an eyepiece (2) disposed within the housing (4) proximate the first end (41) and configured as an object-side telecentric optical path;
a light source portion (3, 3 ') provided in the housing (4) near the second end (42) and having a light source surface on a side facing the eyepiece portion (2), the light source portion (3, 3') being configured to be switchable to emit projection light of different spectrums and to emit projection light of only one spectrum in a period of time;
wherein the eyepiece portion (2) is movably disposed along an optical axis within the housing (4) so that a light source surface of the light source portion (3, 3') is conjugate with a fundus retina.
2. The lens barrel according to claim 1, wherein the light source section (3, 3') includes a plurality of single-spectrum light sources (31) of different spectrums arranged on a cross section of the housing (4), and a scattering member is provided on a side of the plurality of single-spectrum light sources (31) facing the eyepiece section (2).
3. The lens barrel according to claim 2, wherein the light source section (3, 3') includes a substrate arranged in a lateral direction of the housing (4), and the plurality of single spectrum light sources (31) include a plurality of LEDs arranged on the substrate at uniform intervals.
4. The lens barrel according to claim 2, wherein the light source section (3, 3') includes an optical fiber, the plurality of single-spectrum light sources (31) being arranged at one end of the optical fiber, the other end of the optical fiber being provided toward the eyepiece section (2) as a light-emitting end.
5. The lens barrel according to claim 1, wherein the light source section (3, 3') includes:
a broad spectrum light source (32) configured to emit light of a plurality of spectrums simultaneously; and
a filter (33) arranged on a side of the wide-spectrum light source (32) facing the eyepiece portion (2);
wherein the filter (33) is exchangeable.
6. The lens barrel according to claim 5, wherein the broad spectrum light source (32) is capable of emitting light in the light wave range of 360 nm to 750 nm.
7. The lens barrel according to claim 1, wherein the eyepiece portion (2) includes a first meniscus lens (21) and a cemented lens (22) arranged at intervals in a direction from the first end (41) to the second end (42), wherein the cemented lens (22) is joined by a biconvex lens (221) near the first end (41) and a second meniscus lens (222) near the second end (42).
8. The lens barrel according to claim 1, wherein the projected light of the light source section (3, 3') includes violet light having a light wave range of 360 nm to 400 nm.
9. A fundus massage apparatus, comprising:
the lens barrel of any one of claims 1 to 8;
an eye recognition assembly (1) configured to recognize a pupil position;
a moving platform drivingly connected to the housing (4), the moving platform being configured to move the lens barrel toward the human eye based on the identified pupil position.
10. Fundus massage apparatus according to claim 9, characterized in that the eye recognition assembly (1) comprises two cameras (11) arranged laterally on opposite sides of the ocular portion (2) within the housing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286478.1A CN113974957B (en) | 2021-11-02 | 2021-11-02 | Lens barrel for fundus massage device and fundus massage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286478.1A CN113974957B (en) | 2021-11-02 | 2021-11-02 | Lens barrel for fundus massage device and fundus massage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113974957A CN113974957A (en) | 2022-01-28 |
| CN113974957B true CN113974957B (en) | 2023-11-17 |
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| CN202111286478.1A Active CN113974957B (en) | 2021-11-02 | 2021-11-02 | Lens barrel for fundus massage device and fundus massage device |
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| CN (1) | CN113974957B (en) |
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| CN115245630A (en) * | 2022-07-15 | 2022-10-28 | 北京鹰瞳科技发展股份有限公司 | Red light irradiation device and red light irradiation method for myopia physiotherapy |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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