Endoscope

Abstract

The endoscope comprises an FPC flat cable, a traction wire, a forceps channel pipe, a snake bone, a camera and LED lamp beads, and the traction wire penetrates through the side wall of the snake bone and is used for driving the snake bone to be bent; the clamp channel pipe and the FPC flat cable are accommodated in the snake bone; the camera and the LED lamp beads are arranged on the FPC flat cable and are electrically connected with the FPC flat cable; the endoscope further comprises a fly's-eye lens assembly, and the fly's-eye lens assembly is arranged at the front end of the LED lamp bead. According to the endoscope, the fly-eye lens assembly is additionally arranged at the front end of the LED lamp bead, divergent light generated by the LED is deflected, the distribution mode that the light intensity of the cross section of an original light spot at the head end of the endoscope is the highest light spot light intensity and the light intensity of the edge is the weakest in a normal state is improved, and the illumination uniformity of the head end of the endoscope is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an endoscope. Background Art

[0002] Endoscopes are widely used in industrial and medical detection fields, especially in the medical industry for detection and treatment.

[0003] Currently, disposable endoscopes generally use LED lights at the head end as the lighting source. This solution has the problem that the lighting uniformity of the LED lamp beads is weak and the light distribution in all directions is uneven, which affects the lighting and use effect of the endoscope. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide an endoscope, add a compound eye lens assembly in the endoscope, optimize the light of LED lamp beads, and avoid the above-mentioned defects.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an endoscope, the endoscope includes an FPC cable, a traction wire, a clamp channel tube, a snake bone, a camera and an LED lamp bead, the traction wire passes through the side wall of the snake bone to drive the snake bone to bend; the clamp channel tube and the FPC cable are accommodated in the snake bone; the camera and the LED lamp bead are installed on the FPC cable and are electrically connected to the FPC cable;

[0006] The endoscope also includes a compound eye lens assembly, and the compound eye lens assembly is arranged at the front end of the LED lamp bead.

[0007] Among them, the fly-eye lens assembly includes a collimating lens, a fly-eye lens and a convex lens, and the collimating lens, the fly-eye lens and the convex lens are arranged in parallel with the LED lamp bead from near to far, and the center points of the collimating lens, the fly-eye lens and the convex lens are all on the same straight line with the center of the LED lamp bead.

[0008] Among them, the diameters of the collimating lens, the fly-eye lens and the convex lens are equal and are any value between 1.5-2.5mm, the light-emitting surface of the LED lamp bead coincides with the focus of the collimating lens, the straight-line distance between the collimating lens and the fly-eye lens is 1.5 times the diameter of the fly-eye lens, and the straight-line distance between the fly-eye lens and the convex lens is any value between 0.2-0.5mm.

[0009] Wherein, the collimating lens is a Silfi lens or a convex lens.

[0010] Wherein, the fly-eye lens comprises a first row of fly-eye lenses and a second row of fly-eye lenses which are closely arranged, and the optical axes of the first row of fly-eye lenses and the second row of fly-eye lenses are parallel;

[0011] The first column of fly-eye lenses includes a plurality of evenly arranged first unit lenses, and the second column of fly-eye lenses includes a plurality of evenly arranged second unit lenses, each of the first unit lenses corresponds to the second unit lenses one by one, and the focus of the first unit lens coincides with the center of the corresponding second unit lens.

[0012] The shapes of the first unit lens and the second unit lens are any one of spherical, hexagonal and quadrilateral.

[0013] Wherein, the material of the compound eye lens is etched glass or transparent polymer.

[0014] Among them, the endoscope also includes a snake bone skin and an endoscope end, the snake bone skin is wrapped around the outer surface of the snake bone, and the camera, the LED lamp bead and the compound eye lens assembly are all accommodated in the endoscope end.

[0015] Among them, the endoscope also includes an end steel ring, a connecting steel ring and a ferrule, the end steel ring and the connecting steel ring are respectively fixed at the two ends of the snake bone, and the ferrule is sleeved on the end of the endoscope and accommodated in the end steel ring.

[0016] Wherein, the endoscope further comprises a sheath tube, and the sheath tube is sleeved on the outside of the traction wire.

[0017] Compared with the prior art, the beneficial effects achieved by the endoscope of the utility model are as follows: a compound eye lens assembly is added to the front end of the LED lamp bead of the endoscope to deflect the divergent light generated by the LED, thereby improving the cross-sectional light intensity of the original light spot at the end of the endoscope head under normal conditions, with the light spot having the highest intensity and the weakest at the edge, thereby improving the uniformity of illumination at the end of the endoscope head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the endoscope of the utility model;

[0020] Figure 2 It is a cross-sectional view of the endoscope of the utility model;

[0021] Figure 3 yes Figure 2 A partial enlarged view of part A;

[0022] Figure 4 It is an exploded schematic diagram of the endoscope of the utility model;

[0023] Figure 5 is a schematic diagram of light rays when the collimating lens in the first embodiment is a Safir lens;

[0024] Figure 6 is a schematic diagram of light rays when the collimating lens is a convex lens in the first embodiment;

[0025] Figure 7 is a schematic structural diagram of a first embodiment of a first row of fly-eye lenses;

[0026] Figure 8 is a schematic structural diagram of a second embodiment of the first row of fly-eye lenses;

[0027] Fig. 9 4 is a schematic structural diagram of the third embodiment of the first row of fly-eye lenses. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the utility model embodiment, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] See also Figures 1 to 9 , Figure 1 It is a schematic diagram of the structure of the endoscope of the utility model. The endoscope includes an FPC cable 1, a traction wire 2, a clamp channel tube 3, a snake bone 4, a camera and an LED lamp bead 6. The traction wire 2 passes through the side wall of the snake bone 4 to drive the snake bone 4 to bend. The clamp channel tube 3 and the FPC cable 1 are accommodated in the snake bone 4. The camera and the LED lamp bead 6 are installed on the FPC cable 1 and are electrically connected to the FPC cable 1. The endoscope of the present application uses an FPC cable for the electrical connection between the camera and the LED lamp bead 6 of the endoscope, which can effectively reduce the connection difficulty between the camera and the LED lamp bead 6, improve the reliability of the connection, and reduce the space occupied. The endoscope also includes a compound eye lens assembly 100, which is arranged at the front end of the LED lamp bead 6 to deflect the light emitted by the LED lamp bead 6 and then redistribute it, thereby improving the distribution mode of the original light spot cross-section light intensity at the end of the endoscope head under normal conditions, with the light spot light intensity being the highest and the weakest at the edge, thereby improving the uniformity of illumination at the end of the endoscope head.

[0032] Specifically, the fly-eye lens assembly 100 in the present application includes a collimating lens 7, a fly-eye lens 8 and a convex lens 9, which are arranged in parallel from near to far between the collimating lens 7, the fly-eye lens 8 and the convex lens 9 and the LED lamp bead 6, and the center points of the collimating lens 7, the fly-eye lens 8 and the convex lens 9 are all located on the same straight line with the center of the LED lamp bead 6. The collimating lens 7 is used to deflect the divergent light emitted by the LED lamp bead 6 into parallel light, and the parallel light is deflected into dot matrix parallel light after passing through the fly-eye lens 8, and a single dot matrix parallel light beam is deflected into divergent light after passing through the convex lens 9, so that the light distribution is more uniform and the lighting effect is improved.

[0033] In the present application, the diameters of the collimating lens 7, the fly-eye lens 8 and the convex lens 9 are all equal and are any value between 1.5-2.5 mm. The light-emitting surface of the LED lamp bead 6 coincides with the focus of the collimating lens 7. The straight-line distance between the collimating lens 7 and the fly-eye lens 8 is 1.5 times the diameter of the fly-eye lens 8. The straight-line distance between the fly-eye lens 8 and the convex lens 9 is any value between 0.2-0.5 mm.

[0034] In the present application, the collimating lens 7 is a saifei lens or a convex lens. In the first embodiment, the collimating lens 7 is a saifei lens. Figure 5As shown, the Saifei lens is an optical lens with several small convex surfaces on the lens surface, usually called "lens rings", and the above small convex surfaces are all annular convex surfaces. The function of these small convex surfaces is to disperse the light and focus it at the center of the lens. Compared with the traditional spherical lens, the Saifei lens can be thinner, lighter, more transparent, and easier to manufacture. Among them, the collimating lens 7 in the second embodiment is a convex lens, such as Figure 6 As shown, a similar technical effect can be achieved by choosing an ordinary convex lens, but the effect is better when using a Safir lens.

[0035] In the present application, the fly-eye lens 8 includes a first column of fly-eye lenses 81 and a second column of fly-eye lenses 82 that are closely arranged. The first column of fly-eye lenses 81 and the second column of fly-eye lenses 82 are arranged side by side, and the optical axes of the first column of fly-eye lenses 81 and the second column of fly-eye lenses 82 are parallel.

[0036] The first row of fly-eye lenses 81 includes a plurality of evenly arranged first unit lenses 811, and the second row of fly-eye lenses 82 includes a plurality of evenly arranged second unit lenses 821. Each first unit lens 811 corresponds to a second unit lens 821 one by one, and the focus of the first unit lens 811 coincides with the center of the corresponding second unit lens 821. After passing through the first row of fly-eye lenses 81 and the second row of fly-eye lenses 82, the light is further concentrated and then dispersed by the convex lens 9.

[0037] In the present application, the shape of the first unit lens 811 and the second unit lens 821 is any one of spherical, hexagonal, and quadrilateral. Preferably, the present application selects a hexagonal shape. Figures 7 to 9 In the first embodiment, the shape of the first unit lens 811 is spherical, in the second embodiment, the shape of the first unit lens 811 is hexagonal, and in the third embodiment, the shape of the first unit lens 811 is quadrilateral.

[0038] In the present application, the material of the compound eye lens 8 is etched glass or transparent polymer. Etched glass is glass that is etched and carved using an etchant. It is a commonly used glass product that is transparent and translucent. Similarly, transparent polymers can also transmit light and deflect light.

[0039] The endoscope in the present application further includes a snake bone skin 10 and an endoscope tip 11. The snake bone skin 10 is wrapped around the outer surface of the snake bone 4, and the camera, LED lamp beads 6 and compound eye lens assembly 100 are all accommodated in the endoscope tip 11. The snake bone skin 10 is wrapped around the outer surface of the snake bone 4 to protect the snake bone 4 and internal components. The camera and LED lamp beads 6 are all accommodated in the endoscope tip 11. An accommodating space is provided in the endoscope tip 11, and the end of the FPC cable 1 and the camera and LED lamp beads 6 are all located in the accommodating space.

[0040] The endoscope in the present application further includes an end steel ring 12, a connecting steel ring 13 and a ferrule 14. The end steel ring 12 and the connecting steel ring 13 are respectively fixed at the two ends of the snake bone 4. The ferrule 14 is sleeved at the end of the endoscope and accommodated in the end steel ring 12. The end steel ring 12 and the connecting steel ring 13 are respectively fixed at the two ends of the snake bone 4, and are used to fix and limit the snake bone 4. The ferrule 14 is sleeved at the end of the endoscope and accommodated in the end steel ring 12. Specifically, it is arranged at the distal end of the snake bone 4, so that the ferrule 14 drives the snake bone 4 to bend when the traction wire 2 is pulled. When the end of the snake bone 4 bends, it is driven by the ferrule 14 as a whole, rather than the traction wire 2 at a single point, so that excessive local stress can be avoided.

[0041] The endoscope in the present application further includes a sheath tube 15 , which is sleeved on the outside of the traction wire 2 to protect the traction wire 2 .

[0042] When using the endoscope of the utility model, a compound eye lens assembly is added to the front end of the LED lamp bead of the endoscope to deflect the divergent light generated by the LED, thereby improving the distribution of the original light spot cross-section light intensity at the end of the endoscope lens under normal conditions, with the light spot light intensity being the highest and the weakest at the edge, thereby improving the illumination uniformity at the end of the endoscope lens.

[0043] The above description is only an implementation method of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present utility model.

Claims

1. An endoscope, characterized in that: The endoscope comprises an FPC cable, a traction wire, a clamp channel tube, a snake bone, a camera and an LED lamp bead. The traction wire passes through the side wall of the snake bone to drive the snake bone to bend; the clamp channel tube and the FPC cable are accommodated in the snake bone; the camera and the LED lamp bead are installed on the FPC cable and are electrically connected to the FPC cable; The endoscope also includes a compound eye lens assembly, and the compound eye lens assembly is arranged at the front end of the LED lamp bead.

2. The endoscope according to claim 1, characterized in that The fly-eye lens assembly includes a collimating lens, a fly-eye lens and a convex lens. The collimating lens, the fly-eye lens and the convex lens are arranged in parallel with the LED lamp bead from near to far, and the center points of the collimating lens, the fly-eye lens and the convex lens are all located on the same straight line with the center of the LED lamp bead.

3. The endoscope according to claim 2, characterized in that The diameters of the collimating lens, the fly-eye lens and the convex lens are all equal and are any value between 1.5-2.5 mm. The light-emitting surface of the LED lamp bead coincides with the focus of the collimating lens. The straight-line distance between the collimating lens and the fly-eye lens is 1.5 times the diameter of the fly-eye lens. The straight-line distance between the fly-eye lens and the convex lens is any value between 0.2-0.5 mm.

4. The endoscope according to claim 3, characterized in that The collimating lens is a Silfi lens or a convex lens.

5. The endoscope according to claim 3, characterized in that The fly-eye lens comprises a first row of fly-eye lenses and a second row of fly-eye lenses which are closely arranged, and the optical axes of the first row of fly-eye lenses and the second row of fly-eye lenses are parallel; The first column of fly-eye lenses includes a plurality of evenly arranged first unit lenses, and the second column of fly-eye lenses includes a plurality of evenly arranged second unit lenses, each of the first unit lenses corresponds to the second unit lenses one by one, and the focus of the first unit lens coincides with the center of the corresponding second unit lens.

6. The endoscope according to claim 5, characterized in that The shapes of the first unit lens and the second unit lens are any one of spherical, hexagonal and quadrilateral.

7. The endoscope according to claim 5 or 6, characterized in that: The material of the compound eye lens is etched glass or transparent polymer.

8. The endoscope according to claim 1, characterized in that: The endoscope also includes a snake bone skin and an endoscope tip. The snake bone skin is wrapped around the outer surface of the snake bone. The camera, the LED lamp bead and the compound eye lens assembly are all accommodated in the endoscope tip.

9. The endoscope according to claim 8, characterized in that The endoscope also includes an end steel ring, a connecting steel ring and a ferrule. The end steel ring and the connecting steel ring are respectively fixed to the two ends of the snake bone, and the ferrule is sleeved on the end of the endoscope and accommodated in the end steel ring.

10. The endoscope according to claim 9, characterized in that The endoscope also includes a sheath tube, which is sleeved on the outside of the traction wire.

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