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CN-224216979-U - Light supplementing device of iris instrument

CN224216979UCN 224216979 UCN224216979 UCN 224216979UCN-224216979-U

Abstract

The utility model discloses a light supplementing device of an iris instrument, which comprises a light source, an outer lens barrel and an inner lens barrel, wherein the light source is arranged on the back surface of a camera of the iris instrument, the inner lens barrel is arranged on the periphery of the camera, the light source, the camera and the inner lens barrel are arranged in the outer lens barrel, the opening direction of the outer lens barrel is consistent with the shooting direction of the camera, the light source is arranged on the back surface of the camera, the outer lens barrel is arranged outside the camera, the camera is wrapped by the inner lens barrel, and light emitted by the light source is reflected by the inner wall of the outer lens barrel and the outer wall of the inner lens barrel to finally form a certain angle light to be incident into an iris of an eye, so that the generation of high-brightness light spots can be avoided, images acquired by the camera are free of light spots, and the iris instrument is improved in precision and efficiency of iris information acquisition of the iris instrument.

Inventors

  • CHEN JIANJUN

Assignees

  • 杭州健君医疗技术有限公司

Dates

Publication Date
20260508
Application Date
20250528

Claims (12)

  1. 1. The light supplementing device of the iris instrument is characterized by comprising a light source, an outer lens barrel and an inner lens barrel; The light source is arranged on the back of the camera of the iris instrument, the inner lens barrel is arranged on the periphery of the camera, the light source, the camera and the inner lens barrel are all arranged in the outer lens barrel, and the opening direction of the outer lens barrel is consistent with the shooting direction of the camera.
  2. 2. The iris apparatus of claim 1 wherein the outer lens barrel comprises a cylindrical lens barrel coaxially arranged with the light source, and a trapezoidal table lens barrel, a parabolic lens barrel or a flare lens barrel connected with the cylindrical lens barrel, wherein the cylindrical lens barrel is arranged on the periphery of the light source and the camera, and the trapezoidal table lens barrel, the parabolic lens barrel or the flare lens barrel is the bottom of the cylindrical lens barrel.
  3. 3. The light supplementing device of the iris apparatus of claim 1 further comprising a convex lens, wherein the outer lens barrel comprises a cylindrical lens barrel and a parabolic lens barrel which are coaxially arranged with the light source, the cylindrical lens barrel is arranged on the periphery of the light source and the camera, the parabolic lens barrel is the bottom of the cylindrical lens barrel, and the convex lens is arranged at an opening of the cylindrical lens barrel.
  4. 4. The light supplementing device of the iris apparatus according to claim 3, wherein the light source is arranged at a focus of the parabolic cylinder, the focus of the convex lens is positioned behind the lens of the eyeball, and a through hole is arranged at an axis of the convex lens.
  5. 5. The light-compensating device of claim 3, wherein the two sides of the inner lens barrel are parallel to the two sides of the cylindrical lens barrel.
  6. 6. The light-compensating device of claim 3, wherein the convex lens is a biconvex lens, a single-sided convex lens or a Fresnel lens.
  7. 7. The light supplementing device of the iris apparatus of claim 1 wherein the outer lens barrel is an ellipsoidal lens barrel coaxially arranged with a light source, the light source is arranged at a left focus of the ellipsoidal lens barrel, and the lens of the eyeball is arranged between a right focus of the ellipsoidal lens barrel and the camera and is close to the right focus.
  8. 8. The iris apparatus of claim 1 wherein the light source is fixedly disposed at the bottom of the inner wall of the outer lens barrel.
  9. 9. The light supplementing device for an iris apparatus according to any one of claims 1 to 8, wherein a planar support is provided on the inner side of the outer lens barrel, the planar support coincides with the optical axis of the light source, one end of the planar support is connected to the outer lens barrel, and the other end is connected to the inner lens barrel and the camera, respectively.
  10. 10. The iris apparatus of claim 1 further comprising a moving mechanism, wherein the moving mechanism is disposed outside the outer barrel, a chute is formed on the side wall of the outer barrel, a planar support extending into the outer barrel is disposed in the chute, the planar support coincides with the optical axis of the light source, one end of the planar support is connected with the moving mechanism, and the other end of the planar support is connected with the inner barrel and the camera, respectively.
  11. 11. The iris apparatus of claim 1 further comprising a moving mechanism disposed outside the outer tube and connected to the outer tube, wherein a planar support is disposed inside the outer tube, the planar support coincides with the optical axis of the light source, one end of the planar support is connected to the outer tube, and the other end is connected to the inner tube and the camera, respectively.
  12. 12. The light-compensating device of iris apparatus as claimed in claim 10 or 11, further comprising an outer sleeve, wherein the outer sleeve is sleeved outside the outer tube, and the fixed end of the moving mechanism is connected with the outer sleeve.

Description

Light supplementing device of iris instrument Technical Field The utility model relates to the field of iris instruments, in particular to a light supplementing device of an iris instrument. Background In a traditional iris instrument, a camera and an eyeball are coaxial, an iris is a part of the eyeball, 1 or more light sources are arranged on the side face to supplement light, the light sources and an optical axis form a certain angle, and light rays are emitted from the light sources and enter the camera after being reflected by the eyeball, and the detailed view is shown in fig. 1. However, during use, it was found that the light from the light source was always uneven because the lens of the eyeball was a highly reflective object, with the brightest spot appearing as a highlight spot on the captured iris image. In order to solve the above problems of the conventional iris apparatus, a plurality of photographs are often taken, a light source is turned on sequentially, and the photographs are synthesized in the later stage. But the composition may also have some errors and may result in inaccuracy in auto-focusing. Therefore, it is highly desirable to provide a light supplementing device for iris apparatuses to solve the above-mentioned problems. Disclosure of Invention Therefore, it is necessary to provide an iris instrument light supplementing device which has a simple structure and can effectively avoid the generation of highlight speckles. In order to achieve the above object, the present inventors provide a light supplementing device for an iris apparatus, comprising a light source, an outer barrel and an inner barrel; The light source is arranged on the back of the camera of the iris instrument, the inner lens barrel is arranged on the periphery of the camera, the light source, the camera and the inner lens barrel are all arranged in the outer lens barrel, and the opening direction of the outer lens barrel is consistent with the shooting direction of the camera. As a preferable structure of the utility model, the outer lens barrel comprises a cylindrical lens barrel coaxially arranged with the light source, and a trapezoidal table lens barrel, a parabolic lens barrel or a bell mouth lens barrel connected with the cylindrical lens barrel, wherein the cylindrical lens barrel is arranged on the periphery side of the light source and the camera, and the trapezoidal table lens barrel, the parabolic lens barrel or the bell mouth lens barrel is the bottom of the cylindrical lens barrel. As a preferable structure of the utility model, the utility model further comprises a convex lens, the outer lens barrel comprises a cylindrical lens barrel and a parabolic lens barrel which are coaxially arranged with the light source, the cylindrical lens barrel is arranged on the periphery of the light source and the camera, the parabolic lens barrel is the bottom of the cylindrical lens barrel, and the convex lens is arranged at the opening of the cylindrical lens barrel. As a preferable structure of the utility model, the light source is arranged at the focus of the parabolic cylinder, the focus of the convex lens is positioned behind the eyeball lens, and a through hole is arranged at the axis of the convex lens. As a preferable structure of the present utility model, both sides of the inner barrel are disposed in parallel with both sides of the cylindrical barrel. As a preferable configuration of the present utility model, the convex lens is a biconvex lens, a single-sided convex lens, or a fresnel lens. As a preferable structure of the present utility model, the outer lens barrel is an ellipsoidal lens barrel coaxially arranged with a light source, the light source is arranged at a left focus of the ellipsoidal lens barrel, and the eyeball lens is arranged between a right focus of the ellipsoidal lens barrel and the camera and is close to the right focus. As a preferable structure of the utility model, the light source is fixedly arranged at the bottom of the inner wall of the outer lens barrel. In a preferred structure of the present utility model, a planar support is provided inside the outer barrel, the planar support coincides with the optical axis of the light source, one end of the planar support is connected to the outer barrel, and the other end is connected to the inner barrel and the camera, respectively. The utility model also provides a preferable structure, which comprises a moving mechanism, wherein the moving mechanism is arranged at the outer side of the outer lens barrel, a chute is formed on the side wall of the outer lens barrel, a planar bracket extending into the outer lens barrel is arranged in the chute, the planar bracket coincides with the optical axis of the light source, one end of the planar bracket is connected with the moving mechanism, and the other end of the planar bracket is respectively connected with the inner lens barrel and the camera. The utility model also comprises a moving