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CN-121987140-A - Slit lamp microscopic imaging device integrating fundus observation function

CN121987140ACN 121987140 ACN121987140 ACN 121987140ACN-121987140-A

Abstract

The invention discloses a slit lamp microscopic imaging device integrating fundus observation function, belonging to the technical field of ophthalmic detection, which comprises a motion base, a jaw bracket, a light source supporting arm, a microscope supporting arm, a slit illumination assembly, a fundus illumination assembly and a microscopic observation assembly; the newly added fundus illumination light path is provided with a central shading diaphragm, a front condensing lens which can move in or out of the light path is arranged between the plane reflecting mirror and the microscopic observation component, and the combination of the slit illumination and the fundus illumination light path is realized through a beam splitting prism. The invention can reduce the energy of the center of the light beam irradiated to the cornea, improve the safety of fundus examination, effectively avoid the interference of cornea reflection stray light, improve the imaging quality of fundus, realize the integrated detection of anterior ocular segment and fundus tissue, and improve the efficiency and stability of ophthalmic clinical detection.

Inventors

  • HU GUANGXIAO
  • Han Chengfei

Assignees

  • 合肥晶亿眼智能科技有限公司

Dates

Publication Date
20260508
Application Date
20260325

Claims (9)

  1. 1. The slit lamp microscopic imaging device integrating the fundus observation function is characterized by comprising a motion base, a jaw bracket, a light source supporting arm and a microscope supporting arm, wherein the jaw bracket, the light source supporting arm and the microscope supporting arm are arranged on the motion base; On the outgoing light path of the slit illumination assembly, a first collimating lens group, an adjustable width slit, an adjustable slit aperture diaphragm, an adjustable optical filter group, a protection window piece, a first focusing lens group, a first beam splitter prism, a second focusing lens group and a plane reflector are sequentially arranged along the optical axis propagation direction; The second collimating lens group, the adjustable fundus light aperture diaphragm, the third focusing lens group and the central shading diaphragm are sequentially arranged on an emergent light path of the fundus illumination assembly along the optical axis propagation direction, the light emergent side of the central shading diaphragm faces to the incident surface of the first beam splitting prism, the first beam splitting prism deflects the emergent optical axis of the fundus illumination assembly to be coincident with the emergent optical axis of the slit illumination assembly, and the central shading diaphragm shields the central area of a fundus illumination beam and only allows the beam edge zone to pass through; A front condenser is arranged between the light emitting side of the plane reflector and the light entering side of the microscopic observation assembly, and the front condenser is movable and can move in or out of a light path between the plane reflector and the microscopic observation assembly.
  2. 2. The slit lamp microscopic imaging device integrated with fundus observation function according to claim 1, wherein the slit illumination assembly comprises a slit illumination light source, the fundus illumination assembly comprises a fundus illumination light source, light outlets of the slit illumination light source and the fundus illumination light source face the light inlet surfaces of the first collimating lens group and the second collimating lens group respectively, the light inlet surfaces are LED light sources or halogen light sources, and the wavelength coverage range is 350nm-1100nm.
  3. 3. The slit lamp microscopic imaging device integrating fundus observation function according to claim 1, wherein the central light shielding diaphragm is a sheet diaphragm with opaque central area and light-transmitting edge zone, and is fixedly arranged on a fundus illumination light path between a third focusing lens group and a first beam splitter prism, the central light shielding diaphragm is conjugated with an optical system formed by a front section of an eye to be inspected and a lens of the eye to be inspected, and the fundus illumination light source is conjugated with an optical system formed by the central light shielding diaphragm, a second collimating lens group, an adjustable fundus light aperture diaphragm and the third focusing lens group.
  4. 4. The slit lamp microscopic imaging device integrating fundus observation function according to claim 1, wherein the adjustable fundus light aperture diaphragm is fixedly arranged on a fundus illumination light path between the second collimating lens group and the third focusing lens group, an adjusting shaft is arranged in a matched mode, one end of the adjusting shaft is fixedly connected with an adjusting end of the adjustable fundus light aperture diaphragm, the other end of the adjusting shaft extends to the outer side of the light source supporting arm, and the adjustable fundus light aperture diaphragm is provided with three-gear clear apertures with diameters of 2.3mm, 4.6mm and 6.9 mm.
  5. 5. The slit lamp microscopic imaging device integrating fundus observation function according to claim 1, wherein the width-adjustable slit is fixedly arranged on a slit illumination light path between the first collimating lens group and the adjustable slit aperture diaphragm, the light passing width adjustment range is 0-14mm, the adjustable slit aperture diaphragm is provided with a first rotating shaft in a matching mode, one end of the first rotating shaft is fixedly connected with an adjusting end of the adjustable slit aperture diaphragm, and the other end of the first rotating shaft extends to the outer side of the light source supporting arm.
  6. 6. The slit lamp microscopic imaging device integrating fundus observation function according to claim 1, wherein the adjustable filter set is fixed on a mounting structural member, a second rotating shaft is arranged on the mounting structural member in a matched mode, one end of the second rotating shaft is fixedly connected with the mounting structural member, the other end of the second rotating shaft extends to the outer side of a light source supporting arm, and the adjustable filter set comprises cobalt blue sheets, red-free sheets, heat insulation sheets, attenuation sheets and infrared cut-off filters which are circumferentially arranged along the mounting structural member.
  7. 7. The slit lamp microscopic imaging device integrating fundus observation function according to claim 1, wherein a microscope objective, a plurality of groups of relay lens groups, a second beam splitting prism, a fourth relay lens group and a microscope eyepiece are sequentially arranged on an optical path of the microscopic observation assembly along the optical axis propagation direction, a magnification-changing adjusting rotating shaft is arranged on the plurality of groups of relay lens groups in a matching mode, one end of the magnification-changing adjusting rotating shaft is fixedly connected with a switching adjusting end of the relay lens group, and the other end of the magnification-changing adjusting rotating shaft extends to the outer side of a microscope supporting arm.
  8. 8. The slit lamp microscopic imaging device integrating fundus observation function according to claim 7, wherein the multiple groups of relay lens groups comprise a first relay lens group, a second relay lens group and a third relay lens group, the combined vertical axis magnification of the microscope objective and the first relay lens group and the combined vertical axis magnification of the microscope objective and the fourth relay lens group are 1.28 times, the combined vertical axis magnification of the microscope objective and the second relay lens group and the combined vertical axis magnification of the microscope objective and the fourth relay lens group are 0.5 times or 3.2 times, the combined vertical axis magnification of the microscope objective and the combined vertical axis magnification of the third relay lens group and the combined vertical axis magnification of the microscope objective and the fourth relay lens group are 0.8 times or 2 times, the angle magnification of the microscope eyepiece is 12.5X, and an pluggable yellow optical filter is arranged on an optical path between the microscope objective and the multiple groups of relay lens groups, and the yellow optical filter is provided with a switching mechanism in a matched mode, and can be added into or removed from an observation optical path in a switching mode.
  9. 9. The slit lamp microscopic imaging device integrated with the fundus observation function according to claim 7, wherein the camera assembly comprises a camera, an imaging lens group, an optical filter switching mechanism and the camera are arranged on a light splitting light emitting side of the second light splitting prism, a light entering side of the imaging lens group faces a light splitting light emitting surface of the second light splitting prism, a light emitting side faces a light entering surface of the optical filter switching mechanism, a light sensing surface of the camera faces a light emitting surface of the optical filter switching mechanism, a visible band-pass optical filter and an infrared band-pass optical filter are fixed on the optical filter switching mechanism, and can be used for switchably adapting visible light imaging and infrared meibomian gland imaging, and the camera is a CCD camera or a CMOS camera.

Description

Slit lamp microscopic imaging device integrating fundus observation function Technical Field The invention relates to the field of ophthalmic detection equipment, in particular to a slit lamp microscopic imaging device integrating fundus observation function. Background The slit lamp microscope is one of the most commonly used basic equipment in ophthalmic clinical detection and diagnosis, is widely applied to the examination and lesion diagnosis of ocular surface and anterior ocular segment tissues, mainly comprises a slit illumination light source and a high-power microscopic observation system, can realize the high-resolution observation of anterior ocular segment tissues such as cornea, crystalline lens, conjunctiva, iris and the like by adjusting the width, the height and the irradiation angle of slit light beams, and provides an important basis for the diagnosis and treatment of common anterior ocular segment diseases of ophthalmology. In ophthalmic clinical examination, eyeground tissue examination is also a key link for diagnosis of eye diseases, and pathological changes of tissues such as retina, optic nerve, macula and the like of eyeground are closely related to various ophthalmic and systemic diseases. In the prior art, the special fundus examination equipment is mostly an independent device, and the problems that the size is large, the cost is high and the special fundus examination equipment cannot be integrated with the conventional anterior ocular segment examination equipment exist, so that the conventional slit lamp microscope is often directly adopted for simple fundus tissue examination in clinic. However, the optical path design of the traditional slit-lamp microscope only aims at the inspection requirement of the anterior ocular segment, and the technical defect that the traditional slit-lamp microscope is difficult to overcome is mainly overcome when the traditional slit-lamp microscope is directly used for eyeground tissue inspection, and firstly, the illumination light beam of the traditional slit-lamp microscope is coaxial strong light beam, when the illumination light beam irradiates the cornea or crystalline lens of the eye of an observer, the central energy of the light beam is highly concentrated, uncomfortable symptoms such as ocular stinging and photophobia of the observer are extremely easy to cause, long-time and safe eyeground inspection cannot be realized, even unnecessary optical irritation damage is possibly caused to the eyes of the observer, secondly, the highly concentrated light beam center can generate strong specular reflection on the cornea surface, stray light formed by reflection can directly enter an observation system of the eyeground microscope, be mixed into an imaging view of the eyeground tissue, clear observation of the eyeground tissue is seriously interfered by an inspector, eyeground imaging quality is greatly reduced, fine lesions of the eyeground tissue are difficult to accurately identify, and reliability of a diagnosis result is influenced. Disclosure of Invention The invention aims to provide a slit lamp microscopic imaging device integrating fundus observation function, which is used for solving the technical problems in the background technology. The technical scheme of the invention provides a slit lamp microscopic imaging device integrating fundus observation function, which comprises a motion base, a jaw bracket, a light source supporting arm and a microscope supporting arm, wherein the jaw bracket, the light source supporting arm and the microscope supporting arm are arranged on the motion base; On the outgoing light path of the slit illumination assembly, a first collimating lens group, an adjustable width slit, an adjustable slit aperture diaphragm, an adjustable optical filter group, a protection window piece, a first focusing lens group, a first beam splitter prism, a second focusing lens group and a plane reflector are sequentially arranged along the optical axis propagation direction; The second collimating lens group, the adjustable fundus light aperture diaphragm, the third focusing lens group and the central shading diaphragm are sequentially arranged on an emergent light path of the fundus illumination assembly along the optical axis propagation direction, the light emergent side of the central shading diaphragm faces to the incident surface of the first beam splitting prism, the first beam splitting prism deflects the emergent optical axis of the fundus illumination assembly to be coincident with the emergent optical axis of the slit illumination assembly, and the central shading diaphragm shields the central area of a fundus illumination beam and only allows the beam edge zone to pass through; A front condenser is arranged between the light emitting side of the plane reflector and the light entering side of the microscopic observation assembly, and the front condenser is movable and can move in or out of a light path between the