阅读说明：本技术 裂隙光发生组件及手持式裂隙灯显微镜 (Slit light generating assembly and handheld slit lamp microscope ) 是由 胡深明 闫彬 李博 李磊 蒋世维 于 2020-04-17 设计创作，主要内容包括：本发明公开了一种裂隙光发生组件及手持式裂隙灯显微镜,所述裂隙光发生组件包括：镜筒、光源透镜、裂隙片和LED灯电路板；裂隙片沿横截面方向设于所述镜筒内部,镜筒的内壁上设有沿光路方向位于裂隙片前侧的裂隙片支撑部；LED灯电路板上设有沿光路方向位于裂隙片后侧的LED灯,裂隙片与LED灯电路板之间垫设有裂隙片压圈；镜筒的后端设有与之相套接的镜筒后端盖,在镜筒后端盖的支撑下,裂隙片、裂隙片压圈和LED灯电路板在镜筒后端盖与裂隙片支撑部之间沿光路方向依次定位。本发明提供的裂隙光发生组件结构简单、易于组装,不仅可以降低生产成本,而且,光性能稳定、使用方便,有助于提高检查效率和检查的准确性。(The invention discloses a slit light generating assembly and a handheld slit lamp microscope, wherein the slit light generating assembly comprises a lens cone, a light source lens, a slit sheet and an L ED lamp circuit board, the slit sheet is arranged in the lens cone along the cross section direction, a slit sheet supporting part which is positioned on the front side of the slit sheet along the optical path direction is arranged on the inner wall of the lens cone, a L ED lamp which is positioned on the rear side of the slit sheet along the optical path direction is arranged on a L ED lamp circuit board, a slit sheet pressing ring is arranged between the slit sheet and the L ED lamp circuit board in a padding mode, a lens cone rear end cover which is sleeved with the lens cone is arranged at the rear end of the lens cone, and the slit sheet, the slit sheet pressing ring and the L ED lamp circuit board are sequentially positioned between the lens cone rear end cover and the slit sheet supporting part along the optical path direction under the support of the lens cone rear end cover.)

1. The slit light generation assembly is characterized by comprising a lens barrel (2), a light source lens (3) located at the front end of the lens barrel (2), and a slit sheet (4) and an L ED lamp circuit board (6) located inside the lens barrel (2), wherein the slit sheet (4) is arranged inside the lens barrel (2) along the cross section direction, a slit sheet supporting part (8) located on the front side of the slit sheet (4) along the optical path direction is arranged on the inner wall of the lens barrel (2), a L ED lamp (5) located on the rear side of the slit sheet (4) along the optical path direction is arranged on the L ED lamp circuit board (6), a slit sheet pressing ring (10) is arranged between the slit sheet (4) and the L ED lamp circuit board (6), a lens barrel rear end cover (7) sleeved with the rear end of the lens barrel (2) is arranged at the rear end of the lens barrel, and the slit sheet pressing ring (10) and the L ED lamp circuit board (6) are sequentially positioned between the lens barrel rear end cover (7) and the slit sheet supporting part (8).

2. The slit light generating assembly according to claim 1, wherein the rear end of the barrel rear end cap (7) is provided with a boss (12) on an inner surface to support the L ED lamp circuit board (6).

3. The slit light generating assembly according to claim 1, wherein a lens barrel front end cover (13) is provided at a front end of the lens barrel (2), and a through hole penetrating forward and backward along a central line of the light path is provided at a front end of the lens barrel front end cover (13).

4. The split light generating assembly according to claim 1, wherein the split plate (4) is circular with at least one straight edge portion, and the split plate support portion (8) is provided with a positioning groove for accommodating the split plate (4), and the positioning groove is shaped to match with the split plate (4) so as to limit the split plate (4) from rotating in the positioning groove.

5. The slit light generating assembly according to claim 1, wherein the slit sheet pressing ring (10) is provided with arc-shaped pressing portions (11) symmetrically or circumferentially distributed on an annular surface of a front end thereof to press the slit sheet (4) by the arc-shaped pressing portions (11).

6. The slit light generating assembly according to claim 1, wherein the rear end of the lens barrel (2) is provided with at least one opening groove (2-1) on the barrel wall, the opening groove (2-1) penetrates through the wall thickness of the lens barrel and extends axially, the inner wall of the rear end cover (7) of the lens barrel is provided with a convex rib (7-1) capable of being clamped with the opening groove (2-1), after the lens barrel (2) is sleeved with the rear end cover (7) of the lens barrel, the uncovered front end part of the opening groove (2-1) forms a hole position for communicating the inner cavity of the lens barrel (2) with the outside, so as to lead out a lead of the L ED lamp circuit board (6) outwards.

7. The slit light generating assembly according to any one of claims 1 to 6, wherein the lens barrel (2) is provided with symmetrical wing-shaped protrusions (2-3) on an outer circumferential surface thereof; and/or the peripheral surface of the rear end cover (7) of the lens barrel is provided with at least one lateral positioning bulge (7-2).

8. The handheld slit-lamp microscope is characterized by comprising a handheld shell body (14), a macro lens (15) arranged in the middle of the shell body (14) and penetrating through the shell body (14), and a slit lamp positioned above the macro lens (15), wherein the slit lamp is a slit light generation assembly as claimed in any one of claims 1 to 7, and the light path center line of the slit light generation assembly inclines forwards and downwards and forms an included angle of 20-45 degrees with the light path center line of the macro lens (15).

9. The hand-held slit-lamp microscope of claim 8, wherein the optical path centerline of the slit-lamp forms an angle of 30 ° with the optical path centerline of the macro lens (15).

10. The hand-held slit lamp microscope according to claim 8 or 9, characterized in that the front surface of the housing body (14) is formed with a forwardly protruding holder (19) in an area above the macro lens (14), the underside of the holder (19) being provided with a lens hole; the lens barrel (2) is positioned on the inner side of the lens hole, and the light source lens (3) is positioned on the outer side of the lens hole; the light source lens (3) penetrates through the lens hole to be connected with the lens barrel (2) and/or the fixed seat (19) through threads.

Technical Field

The invention relates to the technical field of eye disease inspection equipment, in particular to a slit light generating assembly of a slit lamp microscope used in ophthalmic inspection. The invention also relates to a hand-held slit-lamp microscope provided with said slit-light generating assembly.

Background

A slit-lamp microscope is an important instrument essential for ophthalmologic examination, and in use, the light of the slit-lamp microscope illuminates the eye through a slit. The light source is a narrow slit light source, so the light source is called as a 'smooth knife'.

The principle of the optical knife is that the tyndall phenomenon of the kingdom physics, namely when a beam of light penetrates through a colloid, a bright 'path' in the colloid can be observed from the vertical direction of the incident light, and the phenomenon is called the tyndall phenomenon and also called the tyndall effect.

In order to effectively observe the health condition of eyes, a slit lamp is generally arranged in a room with relatively dark light, a slit light source is used for illuminating the eyes, and then an examining doctor observes the health condition of all parts of the eyes through a microscope.

The traditional slit lamp microscope consists of an illumination system and a binocular microscope, namely a slit lamp and a microscope, so that a slit light source irradiates each part of eyes from different angles and the microscope observes the eyes from different angles, most slit lamps and microscopes have left and right swinging angles mechanically, moreover, the slit light source of the slit lamp requires that the slit edge is very flat, the slit must be clearly imaged on a circle center vertical plane swinging left and right, and the focus of the microscope must be focused on the circle center vertical plane.

The slit-lamp microscope can clearly observe superficial lesions, and can adjust the focal point and the width of the light source to be made into an optical section so as to clearly show the lesions of deep tissues. However, since the slit light starts from the light source and needs to pass through a relatively complicated light path, a usable light beam can be finally formed, and therefore, the slit light is not only complicated in structure, high in assembly difficulty and high in production cost, but also unstable in light performance, and needs to be further improved.

Disclosure of Invention

The invention aims to provide a slit light generating assembly. The crack light generation assembly is simple in structure and easy to assemble, production cost can be reduced, light performance is stable, use is convenient, and improvement of inspection efficiency and inspection accuracy is facilitated.

It is another object of the present invention to provide a hand-held slit-lamp microscope provided with the slit-light generating assembly.

In order to achieve the purpose, the invention provides a slit light generating assembly which comprises a lens barrel, a light source lens, a slit sheet and an L ED lamp circuit board, wherein the light source lens is positioned at the front end of the lens barrel, the slit sheet and the L ED lamp circuit board are positioned in the lens barrel, the slit sheet is arranged in the lens barrel along the cross section direction, a slit sheet supporting part is arranged on the inner wall of the lens barrel and is positioned on the front side of the slit sheet along the optical path direction, a L ED lamp is arranged on the L ED lamp circuit board and is positioned on the rear side of the slit sheet along the optical path direction, a slit sheet pressing ring is arranged between the slit sheet and the L ED lamp circuit board in a padding mode, a lens barrel rear end cover is arranged at the rear end of the lens barrel and is sleeved with the lens barrel rear end cover, and the slit sheet, the slit sheet pressing ring and the L ED lamp circuit board are sequentially positioned between the lens barrel rear end.

Preferably, the rear end of the rear end cap of the lens barrel is provided with a convex part on the inner surface for supporting the L ED lamp circuit board.

Preferably, the front end of the lens barrel is provided with a lens barrel front end cover which is sleeved with the lens barrel front end cover, and the front end part of the lens barrel front end cover is provided with a through hole which is through along the central line of the light path.

Preferably, the cleft plate is circular with at least one straight edge part, the cleft plate supporting part is provided with a positioning groove for accommodating the cleft plate, and the shape of the positioning groove is matched with that of the cleft plate so as to limit the cleft plate to rotate in the positioning groove.

Preferably, the cleft sheet pressing ring is provided with arc pressing parts which are symmetrically distributed or circumferentially distributed on the ring surface of the front end of the cleft sheet pressing ring, so that the cleft sheet is pressed by the arc pressing parts.

Preferably, the rear end of the lens barrel is provided with at least one opening groove on the barrel wall, the opening groove penetrates through the wall thickness of the opening groove and extends axially, the inner wall of the rear end cover of the lens barrel is provided with a convex rib which can be clamped with the opening groove, after the lens barrel is sleeved with the rear end cover of the lens barrel, the uncovered front end part of the opening groove forms a hole position for communicating the inner cavity of the lens barrel with the outside, so that a lead of the L ED lamp circuit board is led out outwards.

Preferably, symmetrical wing-shaped protrusions are arranged on the outer peripheral surface of the lens barrel; and/or the peripheral surface of the rear end cover of the lens barrel is provided with at least one lateral positioning bulge.

In order to achieve the other purpose, the invention provides a handheld slit-lamp microscope, which comprises a handheld shell main body, a macro lens arranged in the middle of the shell main body and penetrating through the shell main body, and a slit lamp positioned above the macro lens, wherein the slit lamp is the slit light generating assembly, the central line of the light path of the slit light generating assembly inclines forwards and downwards, and an included angle of 20-45 degrees is formed between the central line of the light path of the macro lens and the central line of the light path of the slit light generating assembly.

Preferably, the central line of the light path of the slit lamp forms an included angle of 30 degrees with the central line of the light path of the macro lens.

Preferably, a fixing seat protruding forwards is formed on the front surface of the housing main body in an area above the macro lens, and a slope part is formed on the lower side of the fixing seat and provided with a lens hole; the lens barrel is positioned on the inner side of the lens hole, and the light source lens is positioned on the outer side of the lens hole; the light source lens penetrates through the lens hole to be connected with the lens barrel and/or the fixed seat through threads.

The slit light generating assembly provided by the invention has the advantages that the slit sheet and the L ED lamp which are used for forming slit light are arranged in the lens barrel, the slit sheet supporting part is arranged on the inner wall of the lens barrel, and the slit sheet pressing ring is arranged between the L ED lamp circuit board and the slit sheet, when the slit light generating assembly is assembled, the slit sheet pressing ring and the L ED lamp circuit board can be sequentially put in from the rear end of the lens barrel, then the L ED lamp circuit board, the slit sheet pressing ring and the slit sheet can be pressed on the slit sheet supporting part in an axial laminating mode along the optical path direction through the rear end cover of the lens barrel, the light source lens can be connected to the front end of the lens barrel, most of the components are positioned in the linear direction determined by the optical path, the lens barrel is mutually nested and connected for supporting, so that a complete assembly is formed, light does not need to be turned in the advancing process.

The invention also provides a handheld slit-lamp microscope, and as the slit light generating assembly has the technical effects, the handheld slit-lamp microscope provided with the slit light generating assembly also has corresponding technical effects.

Drawings

Fig. 1 is a schematic structural diagram of a slit light generating assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of the slit light generating assembly shown in FIG. 1;

FIG. 3 is a schematic structural diagram of a hand-held slit-lamp microscope according to an embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of the hand-held slit lamp microscope shown in FIG. 3;

fig. 5 is a schematic structural view of a 30 ° included angle formed between a central line of a light path of the slit light generating assembly and a central line of a light path of the macro lens.

In the figure:

1. crack light generating assembly 2, lens cone 2-1, open slot 2-2, outer edge 2-3, wing-shaped projection 3, light source lens 4, crack sheet 5, L ED lamp 6, L ED lamp circuit board 7, lens cone rear end cover 7-1, convex rib 7-2, positioning projection 8, crack sheet supporting part 9, lead 10, crack sheet pressing ring 10-1, gap 11, pressing part 12, projection 13, lens cone front end cover 14, hand-held shell main body 15, macro lens 16, first supporting part 17, second supporting part 18, stopping part 19, fixing seat 20, battery 21, USB charging port 22 and switch

Detailed Description

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In this document, terms such as "upper, lower, left, right" and the like are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, they are not to be construed as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a slit light generating assembly according to an embodiment of the present invention; fig. 2 is an exploded view of the slit light generating assembly shown in fig. 1.

As shown in the figure, in an embodiment, the provided slit light generating assembly 1 is mainly assembled by components such as a lens barrel 2, a light source lens 3, a slit sheet 4, L ED lamps 5, L ED lamp circuit boards 6, and a lens barrel rear end cover 7.

The lens cone 2 is in a cylinder shape, an inner cavity of the lens cone forms a front-back through optical path channel, the crack sheet 4, the L ED lamp 5 and the L ED lamp circuit board 6 are all installed inside the lens cone 2, the light source lens 3 has a focusing function and is detachably installed at the front end of the lens cone 2, a lens cone rear end cover 7 which is sleeved with the lens cone rear end cover is arranged at the rear end of the lens cone 2, the inner diameter of the lens cone rear end cover 7 is slightly larger than the outer diameter of the rear end of the lens cone 2, and the lens cone rear end cover 7 is sleeved at the rear end of.

The inner wall of the middle part of the lens cone 2 is provided with a crack sheet supporting part 8, the supporting part 8 is in an inner ring shape, the inner cavity of the lens cone 2 is divided into a front cavity and a rear cavity, and is provided with a light path through hole for communicating the front cavity and the rear cavity, the outer diameter of the front cavity is slightly larger than the outer diameter of the rear cavity, the inner diameter of the front cavity is also slightly larger than the inner diameter of the rear cavity, the crack sheet 4 is arranged in the rear cavity of the lens cone 2 along the cross section direction and is positioned at the rear side of the crack sheet supporting part 8 along the light path direction, the whole crack sheet 4 is supported on the ring surface of the crack sheet supporting part 8 towards the rear side through the peripheral part, and.

The cleft plate 4 is circular with a straight edge part, which is equivalent to a small part of the circular cleft plate 4 is cut off, a positioning groove for accommodating the cleft plate 4 is arranged on the ring surface of the cleft plate supporting part 8 facing to the rear side, and the shape of the positioning groove is matched with that of the cleft plate 4. Therefore, after the slit sheet 4 is placed in the positioning groove, the straight edge parts of the slit sheet 4 and the positioning groove can limit the slit sheet 4 to rotate in the positioning groove, so that the slit light passing through the slit sheet 4 cannot be deflected.

L ED lamp circuit board 6 is disc-shaped, L ED lamp 5 is welded at the central position of L ED lamp circuit board 6 facing to the side of the gap piece 4 and is electrically connected with L ED lamp circuit board 6, the upper end and the lower end of L ED lamp circuit board 6 are welded with power supply wires 9, L ED lamp circuit board 6 with L ED lamp 5 is located at the rear side of the gap piece 4 along the optical path direction after being installed in place, can be separated from the gap piece 4 by a proper distance and is not contacted with the gap piece 4 so as to avoid damaging the gap piece 4, a gap piece pressing ring 10 is arranged between the gap piece 4 and the L ED lamp circuit board 6 in a padding mode, and arc-shaped pressing parts 11 which are symmetrically distributed (or circumferentially distributed) are arranged on the ring surface of the front end of the gap piece pressing ring 10 so as to press the gap piece 4 through the arc-shaped pressing parts 11.

Under the support of the rear end cap 7 of the lens cone, the L ED lamp circuit board 6, the cleft piece clamping ring 10 and the cleft piece 4 are sequentially positioned between the rear end cap 7 of the lens cone and the cleft piece supporting part 8 along the optical path direction, that is, after the cleft piece 4, the cleft piece clamping ring 10 and the L ED lamp circuit board 6 are sequentially installed into the lens cone 2 from the rear end, the rear end of the lens cone 2 is sealed by the rear end cap 7 of the lens cone, and the L ED lamp circuit board 6, the cleft piece clamping ring 10 and the cleft piece 4 are sequentially pressed and positioned by the rear end cap 7 of the lens cone, so that the assembly is completed quickly without being fixed respectively.

In at least one embodiment, in order to facilitate the above components to sufficiently support L ED lamp circuit board 6 after being assembled, and further to press the gap sheet 4 by the gap sheet pressing ring 10, a protrusion 12 may be provided on the inner end surface of the lens barrel rear end cap 7 to support L ED lamp circuit board 6 by the protrusion 12, the protrusion 12 shown in the figure is cylindrical and located at the center of the inner end surface of the lens barrel rear end cap 7 to support L ED lamp circuit board 6 from the middle, besides, the protrusion 12 may not be located at the center of the lens barrel rear end cap 7, for example, a plurality of protrusions 12 may be designed on the inner end surface of the lens barrel rear end cap 7, and these protrusions 12 may be distributed in a rectangular array or a ring array, and such a structure may also achieve a supporting effect on L ED lamp circuit board 6.

The front end of the lens cone 2 is provided with a lens cone front end cover 13 which is sleeved with the lens cone front end cover, the inner diameter of the lens cone front end cover 13 is slightly larger than the outer diameter of the front end of the lens cone 2, the lens cone front end cover 13 is sleeved at the front end of the lens cone 2 from the outside, and the front end part of the lens cone front end cover 13 is provided with a through hole which is through along the central line of a light path in the front-back direction so as to.

In other embodiments, as a further improvement, two opening grooves 2-1 are formed in the wall of the rear end of the lens barrel 2, the two opening grooves 2-1 are vertically symmetrical, the two opening grooves 2-1 penetrate through the wall thickness of the lens barrel 2 and extend in the axial direction of the lens barrel, two convex ribs 7-1 are formed in the inner wall of the rear end cover 7 of the lens barrel, in the assembling process, the two convex ribs 7-1 can be clamped with the two opening grooves 2-1, the relative positioning of the rear end cover 7 of the lens barrel and the lens barrel 2 can be realized through the matching of the convex ribs 7-1 and the opening grooves 2-1, the rear end cover 7 of the lens barrel is prevented from rotating relative to the lens barrel 2, meanwhile, the length of the opening groove 2-1 is larger than the depth of the rear end cover 7 of the lens barrel, and after the lens barrel 2 is sleeved with the rear end cover 7 of the lens barrel, the front end part of the opening groove 2-1, which is not covered, forms a hole position.

When assembling, wire 9 on L ED lamp circuit board 6 can follow the trend and get into inside open slot 2-1 from the opening, and when inwards promoting L ED lamp circuit board 6, slide to open slot 2-1 front end along with L ED lamp circuit board 6, form the structure of outwards wearing out naturally after cup jointing, compare with the structure of trompil then wearing out wire 9 on lens cone 2, need not increase extra perforation operation, not only can very big improvement packaging efficiency, moreover, need not crooked, pull wire 9, can avoid damaging wire 9 or pull wire 9 and L ED lamp circuit board 6 and take off.

In other embodiments, if the thickness of the cleft plate pressing ring 10 is relatively large, the lead 9 of the L ED lamp circuit board 6 needs to pass through the cleft plate pressing ring 6 first when being led out, in this case, in the same way, a vertically symmetrical notch 10-1 is designed on the cleft plate pressing ring 10, the depth of the notch 10-1 is larger than the diameter of the lead 9, after assembly, the notch 10-1 corresponds to the hole position formed by the front end part of the open slot 2-1, so that the lead 9 of the L ED lamp circuit board 6 can be led out conveniently.

The outer peripheral surface of the lens cone 2 is also provided with a circle of annular outer edge 2-2, the annular outer edge 2-2 is provided with symmetrical wing-shaped bulges 2-3, and the lens cone 2 can be conveniently assembled with other parts by arranging the wing-shaped bulges 2-3, for example, in the assembling process, the lens cone 2 can be placed in a lens cone front end cover 13 by clamping the wing-shaped bulges 2-3 on the lens cone 2 by fingers, and because the lens cone 2, a lens cone rear end cover 7 and the lens cone front end cover 13 are injection-molded parts, the wing-shaped bulges 2-3 are designed on the lens cone 2, the accurate molding can be conveniently carried out in the injection molding process, and the situation that parts are unavailable due to overlarge deformation in the production process can be prevented.

In addition, at least one lateral positioning bulge 7-2 is arranged on the peripheral surface of the rear end cover 7 of the lens barrel so as to be limited by the positioning bulge 7-2 during assembly, and the positioning bulge 7-2 is designed into a limiting handle form in the drawing.

Referring to fig. 3 and 4, fig. 3 is a schematic structural diagram of a handheld slit-lamp microscope according to an embodiment of the present invention; fig. 4 is a partial cross-sectional view of the hand-held slit lamp microscope shown in fig. 3.

As shown in the drawings, in addition to the above slit light generating assembly, the present invention also provides a handheld slit lamp microscope, which mainly comprises a handheld housing main body 14, a macro lens 15, and the like, wherein the macro lens 15 is disposed in the middle of the housing main body 14 and is penetratingly fixed on the housing main body 14, and a slit lamp is located above the macro lens 15, wherein the slit lamp is the slit light generating assembly 1 described above.

Specifically, the housing main body 14 has a flat shape with a set thickness, and the center line of the macro lens 15 is perpendicular to the flat surface of the housing main body 14.

The hand-held housing body 14 has a front surface, a rear surface and an outer peripheral surface located between the front surface and the rear surface, and under the condition of holding with one hand, the thumb of the medical staff can be supported on the rear surface, and the other four fingers can be supported on the front surface, so that the hand-held housing body has high portability.

After the crack light generating component 1 is assembled into a finished product, the central line of the light path of the crack light generating component 1 inclines forwards and downwards, an included angle of 20-45 degrees is formed between the central line of the light path of the macro lens 15, and the intersection point of the light path is positioned right in front of the macro lens 15.

Preferably, the center line of the light path of the slit light generating assembly 1 forms an angle of 30 ° with the center line of the light path of the macro lens 15 (see fig. 5). When the light source lens 3 and the center line of the macro lens 15 form an angle of 30 degrees and the macro lens 15 can clearly image the eye surface, the thinnest slit light can be ensured, and the imaging effect is better. For example, for a certain light source lens 3, it can be ensured that a confocal point is formed at a focal point of 40mm, the finest and brightest light rays can be called at the distance through the light source lens, and in the image acquisition process, the image acquisition of the macro lens is not influenced, and the interference effect is not generated.

The shell body 14 is formed by the front shell and the rear shell which are combined, the front shell and the rear shell are connected through a buckle and a screw, a first supporting part 16 is arranged in the rear shell at a position corresponding to the rear end cover of the lens cone, the first supporting part 16 is positioned at the rear side of the rear end cover 7 of the lens cone, is provided with an inclined plane vertical to the axis of the slit light generating assembly 1, and supports the slit light generating assembly 1 from the rear part through the inclined plane. Specifically, the first support member 16 may be a plurality of support plates, and inclined surfaces of the plurality of support plates are located on the same plane and abut against the rear surface of the lens barrel rear end cap 7 through the inclined surfaces; meanwhile, a second supporting part 17 is arranged in the rear shell at a position corresponding to the rear end cover 7 of the lens barrel, the second supporting part 17 is positioned below the rear end cover 7 of the lens barrel, is provided with a supporting surface parallel to the axis of the slit light generating assembly 1, and supports the slit light generating assembly 1 from the lower direction of the tail part of the slit light generating assembly 1 through the supporting surface. Specifically, the second supporting member 17 may be a supporting block or a plurality of supporting plates, and a supporting surface formed by the supporting member may be a plane or an arc surface which is matched with the radian of the outer peripheral surface of the lens barrel, and supports the slit light generating assembly 1 upward through the supporting surface.

In addition, a stopping component 18 can be arranged in the rear shell, the stopping component 18 is positioned on the front side of the positioning bulge 7-2, the lens barrel rear end cover 7 can be limited by stopping the forward movement of the positioning bulge 7-2, and the lens barrel rear end cover can be designed into various forms such as a stopping block, a stopping strip or a stopping ring, and the like, can be connected with the rear shell through screws or buckles, so as to be fixed on the front side of the positioning bulge 7-2, and can also be in an integrated structure with the rear shell to form a limiting seat together with the first supporting component 16 and the second supporting component 17.

The front surface of the shell main body 14 is formed with a fixing seat 19 protruding forwards in the upper area of the macro lens 15, the fixing seat 19 and the shell main body 14 are of an integral structure, the lower side of the fixing seat 19 is provided with an inclined surface part, the inclined surface part is generally perpendicular to the central line of the light path of the slit light generating assembly 1, the inclined surface part is provided with a lens hole, the lens barrel 2 of the slit light generating assembly 1 is located on the inner side of the lens hole, the light source lens 3 is located on the outer side of the lens hole, and the light source lens 3 penetrates through the lens hole to be connected with the fixing seat 19.

Of course, the light source lens 3 may be connected to the front end of the lens barrel 2, or may be connected to both the fixing base 19 and the front end of the lens barrel 2. For example, the light source lens 3 is provided with an external thread, the front end of the lens barrel 2 is provided with an internal thread, and the light source lens 3 is screwed with the lens barrel 2 through the thread, and/or the lens hole of the fixed seat 19 is provided with an internal thread, and the light source lens 3 is connected with the fixed seat 19 through the thread.

It should be noted that the connection mode of the light source lens 3 and the front end of the lens barrel 2 and/or the fixing base 19 is not limited to direct connection, and an adapter may be provided therebetween and then indirect connection may be performed through the adapter.

The lower part of the shell main body 14 is provided with a rechargeable battery 20 in a slit lamp power supply circuit assembly and a USB charging port 21 positioned at the bottom, the side surface of the shell main body 14 is provided with a key-dialing switch 22 for controlling the on-off of a circuit, the USB charging port 21 is connected with the battery 20, the battery 20 is connected with the L ED lamp circuit board 6 through the switch 22, when the switch is closed, the L ED lamp circuit board 6 is connected with the battery 20, the battery 20 supplies power for the L ED lamp circuit board 6, when the switch 22 is opened, the L ED lamp circuit board 6 is disconnected with the battery 20, and the battery 20 does not supply power for the L ED lamp circuit board 6 any more.

The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the cleft plate pressing ring 10 and the lens barrel rear end cover 7 are of an integral structure; alternatively, a part of the light source lens 3 is located inside the holder 19, another part is located outside the holder 19, and so on. This is not illustrated here, since many implementations are possible.

The slit light generating assembly provided by the invention has the advantages that the core components of the slit sheets 4 and L ED lamps 5 for forming slit light are arranged in the lens barrel 2, meanwhile, the inner wall of the lens barrel 2 is provided with the slit sheet supporting part 8, and the slit sheet pressing ring 10 is arranged between the L ED lamp circuit board 6 and the slit sheet 4, when the slit light generating assembly is assembled, the slit sheet 4, the slit sheet pressing ring 10 and the L ED lamp circuit board 6 can be firstly put in the lens barrel 2 from the rear end in sequence, then the L ED lamp circuit board 6, the slit sheet pressing ring 10 and the slit sheet 4 can be pressed on the slit sheet supporting part 8 in an axial laminating mode through the lens barrel rear end cover 7 positioned at the rear end of the lens barrel 2, the light source lens 3 can be connected at the front end of the lens barrel 2, the component parts are basically positioned in the straight line direction determined by the light path, the lens barrel 2 is mutually nested and connected by means, so as to form a complete assembly, the light does not need to turn in the advancing process, compared with the prior art, the structure is simple, the assembly is convenient, the use, the assembly is convenient, the production cost is better, the optical inspection efficiency is improved, the optical inspection efficiency is easy, and.

The slit light generating assembly and the hand-held slit-lamp microscope provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.