Lens fixing device

Abstract

The utility model discloses a lens fixing device, and belongs to the technical field of optical imaging. The lens base comprises a lens base body and an optical filter mounting ring, the lens base body is sequentially provided with an optical filter groove, a lens groove and a light transmitting hole in the incident direction of light beams, the optical filter groove, the lens groove and the light transmitting hole are coaxially arranged, and the aperture of the optical filter groove, the aperture of the lens groove and the aperture of the light transmitting hole are sequentially reduced. The optical filter mounting ring is mounted in the optical filter groove and is in threaded connection with the side wall of the optical filter groove, an optical filter is coaxially mounted in the optical filter groove, and a lens is coaxially mounted in the lens groove. The device is simple in structure, can achieve the synchronous adjustment of the optical path of the optical filter and the optical path of the lens, and is simpler and more convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of optical imaging technology, specifically a lens fixing device. Background Technology

[0002] Probe-type confocal endoscopes are high-precision optical imaging devices. In existing probe-type confocal endoscopes, the lens fixing device (structure) and the filter fixing device (structure) are installed on different mounts, which makes the structure relatively complex. Therefore, it is necessary to improve this. Utility Model Content

[0003] The purpose of this invention is to provide a lens fixing device to solve the problem of the complex structure of existing related technologies.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a lens fixing device, including a lens base body and a filter mounting ring. The lens base body is provided with a filter groove, a lens groove and a light transmission hole in sequence along the incident direction of the light beam. The filter groove, lens groove and light transmission hole are coaxially arranged. The aperture of the filter groove, the aperture of the lens groove and the aperture of the light transmission hole decrease in sequence. The filter mounting ring is installed in the filter groove and threadedly connected to the side wall of the filter groove. A filter is coaxially installed in the filter groove and a lens is coaxially installed in the lens groove.

[0005] In the above technical solution, the filter mounting ring includes a side plate and a bottom plate. The side plate is threaded to the side wall of the filter slot. The outer edge of the bottom plate is connected to the side plate. A light-transmitting hole coaxial with the lens slot is provided in the middle of the bottom plate. The diameter of the light-transmitting hole is not less than the diameter of the lens slot.

[0006] In the above technical solution, the filter mounting ring has at least two rotating grooves at the end away from the lens groove.

[0007] In the above technical solution, the mirror mount body is further provided with a reinforcing part, and the filter mounting ring and the filter groove are disposed on the reinforcing part.

[0008] The above technical solution also includes an adhesive layer, through which the filter is installed in the filter groove and the lens is installed in the lens groove.

[0009] In the above technical solution, a relief groove is provided between the lens groove and the light-transmitting hole, and the diameter of the relief groove is larger than the diameter of the lens groove.

[0010] The above technical solution also includes a washer installed between the lens and the light-transmitting hole. One end of the washer contacts the mirror surface of the lens near the light-transmitting hole, and the other end is connected to the bottom of the lens groove through a compression spring.

[0011] This utility model provides a lens fixing device, which includes a filter mounting ring, a filter groove, a lens groove, and a light transmission hole. Since the filter mounting ring and the lens base body are connected by a thread, the filter can be installed in the filter mounting ring first, then the lens can be installed in the lens groove, and finally the filter mounting ring with the filter is installed on the lens base body by a detachable connection (threaded connection). In this way, the present invention can realize the functions of fixing the filter and fixing the lens on the same lens base body. It is not only simple in structure, but also can realize synchronous adjustment of the light path of the filter and the light path of the lens, making the operation more convenient. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the lens fixing device described in Embodiment 1;

[0014] Figure 2 This is a schematic diagram of the lens fixing device described in Embodiment 2.

[0015] In the diagram: 1. Lens mount body; 11. Reinforcing part; 2. Filter mounting ring; 21. Side plate; 22. Base plate; 23. Light transmission hole; 24. Rotation groove; 31. Filter groove; 32. Lens groove; 33. Light transmission hole; 34. Retraction groove; 41. Filter; 42. Lens; 5. Adhesive layer; 61. Washer; 62. Compression spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. At the same time, it should be understood that the specific embodiments described herein are merely used to explain the present utility model and are not intended to limit the present utility model.

[0017] Example 1

[0018] like Figure 1 As shown, this embodiment provides a lens fixing device, including a lens mount body 1 and a filter mounting ring 2. The filter mounting ring 2 and the lens mount body 1 are detachably connected. A filter 41 can be placed in the filter mounting ring 2, and a lens 42 can be placed in the lens mount body 1 (through the lens groove 32). In this way, this embodiment can simultaneously fix the filter 41 and the lens 42 on the same lens mount body 1. It not only has a simpler structure, but also enables synchronous adjustment of the optical path of the filter 41 and the optical path of the lens 42, making the operation more convenient.

[0019] The lens mount body 1 is provided with a filter groove 31, a lens groove 32 and a light transmission hole 33 in sequence along the incident direction of the light beam. The filter groove 31, the lens groove 32 and the light transmission hole 33 are arranged coaxially. The aperture of the filter groove 31, the aperture of the lens groove 32 and the aperture of the light transmission hole 33 decrease in sequence to form a stepped structure in the lens mount body 1, so that the filter 41 and the lens 42 can be fixed more conveniently in this embodiment.

[0020] The filter mounting ring 2 is installed inside the filter groove 31 and threadedly connected to the side wall of the filter groove 31, allowing the operator to sequentially install the lens 42 and the filter 41 inside the endoscope body 1. The filter 41 is coaxially installed inside the filter groove 31, and the lens 42 is coaxially installed inside the lens groove 32. Thus, the filter groove 31, lens groove 32, light-transmitting hole 33, filter 41, and lens 42 are coaxially arranged on the endoscope body 1, making the light beam more stable when passing through the lens fixing device described in this embodiment, thereby making the detection structure of the probe-type confocal endoscope more accurate.

[0021] In actual operation, the filter 41 can be installed in the filter mounting ring 2, and the lens 42 can be installed in the lens groove 32. Since the filter mounting ring 2 and the lens base body 1 are connected by threads, in this embodiment, the filter 41 can be installed in the filter mounting ring 2 first, then the lens 42 can be installed in the lens groove 32, and finally the filter mounting ring 2 with the filter 41 can be installed on the lens base body 1.

[0022] The filter mounting ring 2 includes a side plate 21 and a base plate 22. The side plate 21 is threadedly connected to the side wall of the filter slot 31. The outer edge of the base plate 22 is connected to the side plate 21. A light-transmitting hole 23, coaxial with the lens slot 32, is provided in the center of the base plate 22 to allow light beams to pass through. The diameter of the light-transmitting hole 23 is not less than the diameter of the lens slot 32. This threaded connection structure allows workers to more easily install the filter mounting ring 2 into the lens mount body 1 or remove the filter mounting ring 2 from the lens mount body 1.

[0023] The filter mounting ring 2 has at least two rotating slots 24 at the end away from the lens groove 32, so that the operator can more easily install / remove the filter mounting ring 2 on the lens mount body 1.

[0024] The mirror mount body 1 is also provided with a reinforcing part 11 to further improve the structural stability of this embodiment. The filter mounting ring 2 and the filter groove 31 are disposed on the reinforcing part 11.

[0025] A relief groove 34 is provided between the lens groove 32 and the light-transmitting hole 33 to reduce the processing difficulty of this application. The diameter of the relief groove 34 is larger than the diameter of the lens groove 32.

[0026] This embodiment also includes an adhesive layer 5, through which the filter 41 is mounted in the filter groove 31, and the lens 42 is mounted in the lens groove 32 through the adhesive layer 5. Thus, this embodiment further secures the filter 41 and / or the lens 42, thereby increasing the structural stability of this embodiment.

[0027] In actual operation, the lens fixing device described in this embodiment can be installed on the worktable to realize the optical path detection function on the probe-type confocal endoscope.

[0028] Example 2

[0029] like Figure 2 As shown, this embodiment also provides a lens fixing device, including a lens mount body 1 and a filter mounting ring 2, etc. The difference between this embodiment and embodiment 1 is that this embodiment also includes a washer 61 and a compression spring 62. The washer 61 can be installed in the lens groove 32 and / or the filter groove 31. The center line of the compression spring 62 coincides with the center line of the lens groove 32. The washer 61 and the compression spring 62 not only give this application a certain shock absorption function, but also make it easier for the staff to install the lens 42 and / or the filter 41, thereby making the operation of this application more convenient.

[0030] When the washer 61 is installed in the lens groove 32, the washer 61 is installed between the lens 42 and the light-transmitting hole 33. One end of the washer 61 contacts the mirror surface (end face) of the lens 42 near the light-transmitting hole 33, and the other end is connected to the bottom of the lens groove 32 through the compression spring 62.

[0031] When the washer 61 is installed in the filter slot 31, the washer 61 is installed between the lens 42 and the lens slot 32. One end of the washer 61 contacts the mirror surface (end face) of the lens 42 near the light-transmitting hole 33, and the other end is connected to the bottom of the filter slot 31 through the compression spring 62.

[0032] In actual operation, in addition to the above-mentioned washer 61 and compression spring 62, Embodiment 2 may also include a rotating groove 24, a reinforcing part 11 and an adhesive layer 5. The arrangement of the above-mentioned rotating groove 24, reinforcing part 11 and adhesive layer 5 in Embodiment 2 can be referred to the description of Embodiment 1 above, and will not be repeated here.

[0033] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lens fixing device, characterized in that: The invention comprises a lens base body (1) and a filter mounting ring (2); the lens base body (1) is provided with a filter slot (31), a lens slot (32) and a light transmission hole (33) in sequence along the incident direction of the light beam; the filter slot (31), the lens slot (32) and the light transmission hole (33) are coaxially arranged; the filter mounting ring (2) is installed in the filter slot (31) and is threadedly connected to the side wall of the filter slot (31); a filter (41) is coaxially installed in the filter slot (31); and a lens (42) is coaxially installed in the lens slot (32).

2. The lens fixing device according to claim 1, characterized in that: The filter mounting ring (2) comprises a side plate (21) and a bottom plate (22), wherein the side plate (21) is threadedly connected to the side wall of the filter slot (31), the outer edge of the bottom plate (22) is connected to the side plate (21), and a light through hole (23) coaxial with the lens slot (32) is provided in the middle of the bottom plate (22), and the diameter of the light through hole (23) is not less than the diameter of the lens slot (32).

3. The lens fixing device according to claim 2, characterized in that: The filter mounting ring (2) is provided with at least two rotation grooves (24) at one end away from the lens groove (32).

4. The lens fixing device according to claim 1, characterized in that: The lens holder body (1) is also provided with a reinforcing portion (11), and the filter mounting ring (2) and the filter slot (31) are arranged on the reinforcing portion (11).

5. The lens fixing device according to claim 1, characterized in that: It also comprises a glue layer (5), the filter (41) is installed in the filter slot (31) through the glue layer (5), and the lens (42) is installed in the lens slot (32) through the glue layer (5).

6. The lens fixing device according to claim 1, characterized in that: A back-off groove (34) is provided between the lens groove (32) and the light-transmitting hole (33), and the diameter of the back-off groove (34) is greater than the diameter of the lens groove (32).

7. The lens fixing device according to claim 1, characterized in that: It also includes a gasket (61) installed between the lens (42) and the light-transmitting hole (33), one end of the gasket (61) contacts the mirror surface of the lens (42) close to the light-transmitting hole (33), and the other end is connected to the bottom of the lens groove (32) through a compression spring (62).

8. The lens fixing device according to claim 1, characterized in that: It also includes a gasket (61) installed between the lens (42) and the lens groove (32), one end of the gasket (61) is in contact with the mirror surface of the lens (42) close to the light-transmitting hole (33), and the other end is connected to the bottom of the filter groove (31) through a compression spring (62).

9. The lens fixing device according to claim 1, characterized in that: The apertures of the filter slot (31), the lens slot (32) and the light-transmitting hole (33) decrease in sequence.

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