Fluorescent light source module for endoscope

Abstract

The fluorescent light source module for the endoscope comprises a fluorescent light source and a hollow fixing support, a first lens is arranged at the upper end of the fixing support, a second lens is arranged at the lower end of the fixing support, and the upper end of the fixing support is movably connected with a hollow moving platform. A hollow anti-rotation part is arranged above the movable platform and is in sliding connection with the fixed support in the axial direction, the laser emitting end of the fluorescent light source is located in the middle of the anti-rotation part and faces the first lens and the second lens, the anti-rotation part is fixedly connected with the laser emitting end of the fluorescent light source, and the laser emitting end of the fluorescent light source faces the first lens and the second lens. The laser emitting end of the fluorescent light source, the axis of the first lens and the axis of the second lens are located on the same straight line. According to the technical scheme, the position of the laser emitting end is adjusted through the moving platform, and therefore it is guaranteed that the laser output effects of different fluorescent light source modules are consistent; and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscope lighting, in particular to a fluorescent light source module for an endoscope. Background Art

[0002] In existing medical endoscopes, industrial endoscopes and other fields using fiber optic illuminators, the laser output end of the fluorescent light source is directly fixed on the corresponding structure, so that the position of the laser output end is exactly at the focal position of the lens and cannot be moved. Figure 1 As shown, the laser emitting end 1 of the fluorescent light source module is fixed at the focal plane position of the first lens 2, and there is a certain input divergence angle α when the laser is input (α is 20±5°). The traditional fixing scheme is designed with a fixed input divergence angle α to fix the laser emitting end 1 at the focal plane position of the first lens 2. After being collected and diverged by the first lens 2, the laser is output. At this time, the angle between the laser output light paths is β. Because the traditional fixing scheme fixes the position of the laser emitting end, the laser input divergence angle α of different fluorescent light source modules cannot be maintained consistent, and the laser output divergence angle β of different fluorescent light source modules cannot be consistent, the final laser output effect of the fluorescent light source module cannot be consistent. Utility Model Content

[0003] In response to the above technical problems, the utility model discloses a fluorescent light source module for endoscopes, which can adjust the position of the laser emitting end to ensure that the laser output effects of different fluorescent light source modules are consistent.

[0004] To this end, the technical solution of the present utility model is:

[0005] A fluorescent light source module for an endoscope includes a fluorescent light source and a hollow fixed bracket, wherein a first lens is provided at the upper end of the fixed bracket, and a second lens is provided at the lower end of the fixed bracket. The upper end of the fixed bracket is movably connected to a hollow movable platform, and a hollow anti-rotation part is provided above the movable platform. The anti-rotation part is axially slidably connected to the fixed bracket, and a laser emitting end of the fluorescent light source is located in the middle of the anti-rotation part and faces the first lens and the second lens. The anti-rotation part is fixedly connected to the laser emitting end of the fluorescent light source, and the axis center lines of the laser emitting end of the fluorescent light source, the first lens, and the second lens are on the same straight line.

[0006] With this technical solution, the anti-rotation member is driven up and down by the movable platform, thereby moving the laser emitter of the fluorescent light source away from or closer to the first lens. This ensures that different laser input divergence angles α maintain a consistent laser output divergence angle β after being collected and diverged by the lens. During adjustment, the anti-rotation member ensures that the position of the laser emitter of the fluorescent light source remains unchanged, improving reliability.

[0007] As a further improvement of the present invention, the mobile platform is rotationally connected or slidingly connected to the fixed bracket.

[0008] As a further improvement of the present invention, the upper portion of the fixed bracket is provided with an external thread, the movable platform is provided with an internal thread, and the movable platform is connected to the upper portion of the fixed bracket via threads.

[0009] As a further improvement of the present invention, a positioning hole is provided on the side wall of the mobile platform, and the mobile platform is connected to the fixed bracket via a fastener provided in the positioning hole.

[0010] As a further improvement of the present invention, the upper portion of the fixed bracket is a raised step portion, and the movable platform is connected to the step portion.

[0011] As a further improvement of the present invention, the lower part of the anti-rotation part is located in the mobile platform, the upper part of the mobile platform is provided with a limiting fastener, the side wall of the anti-rotation part is provided with an annular U-shaped groove, and the limiting fastener is cooperated and connected with the U-shaped groove.

[0012] As a further improvement of the present invention, a guide groove extending in the axial direction is provided on the top of the fixing bracket, and the anti-rotation member is connected to the guide groove via a guide column.

[0013] As a further improvement of the present invention, a fixing fixture is provided on the top of the anti-rotation member, and the fixing fixture is fixedly connected to the laser emitting end of the fluorescent light source.

[0014] As a further improvement of the present invention, the anti-rotation member is a T-shaped structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By adopting the technical solution of the present invention, the position of the laser emitting end is adjusted by a mobile platform, and the mobile platform is adjusted to accommodate the differences in the input divergence angles α of different laser emitting ends, so that the laser output divergence angles β of different laser input divergence angles α after being collected and diverged by the lens remain consistent, thereby ensuring the consistent laser output effects of different fluorescent light source modules; and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a light path diagram of a fluorescent light source module for an endoscope in the prior art.

[0018] Figure 2 This is a structural schematic diagram of a fluorescent light source module for an endoscope according to an embodiment of the present utility model.

[0019] Figure 3This is a cross-sectional view of a fluorescent light source module for an endoscope according to an embodiment of the present invention.

[0020] Figure 4 This is a light path diagram of the fluorescent light source module for endoscopes according to an embodiment of the present utility model.

[0021] Figure 5 It is a structural schematic diagram of the anti-rotation part of an embodiment of the utility model.

[0022] Reference numerals include:

[0023] 1-laser emitting end, 2-first lens, 3-second lens, 4-fixed bracket, 5-movable platform, 6-anti-rotation part 51-positioning hole, 52-fastener, 53-limiting fastener;

[0024] 61-U-shaped slot. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0026] like Figures 2 to 5 As shown, a fluorescent light source module for endoscope includes a fluorescent light source and a hollow fixed bracket 4, the upper end of the fixed bracket 4 is provided with a first lens 2, the lower end of the fixed bracket 4 is provided with a second lens 3, the upper end of the fixed bracket 4 is movably connected to a hollow movable platform 5, the movable platform 5 is covered on the outside of the first lens 2, and a hollow anti-rotation part 6 is provided above the movable platform 5, the anti-rotation part 6 is axially slidably connected to the fixed bracket 4, the laser emitting end 1 of the fluorescent light source is located in the middle of the anti-rotation part 6, and faces the first lens 2 and the second lens 3, the anti-rotation part 6 is fixedly connected to the laser emitting end 1, and the axis lines of the laser emitting end 1, the first lens 2, and the second lens 3 are on the same straight line.

[0027] In this embodiment, the upper portion of the fixed bracket 4 is provided with an external thread, the movable platform 5 is provided with an internal thread, and the movable platform 5 is connected to the upper portion of the fixed bracket 4 through threads.

[0028] The side wall of the mobile platform 5 is provided with a positioning hole 51, and the mobile platform 5 is connected to the fixed bracket 4 via a fastener 52 provided in the positioning hole 51. Furthermore, the upper portion of the fixed bracket 4 is a raised step portion, and the mobile platform 5 is connected to the step portion.

[0029] The lower portion of the anti-rotation member 6 is located within the mobile platform 5. A limiting fastener 53 is provided on the upper portion of the mobile platform 5. The sidewall of the anti-rotation member 6 is provided with an annular U-shaped groove 61, and the limiting fastener 53 engages with the U-shaped groove 61. Adjusting the limiting fastener 53 ensures a tight fit between the anti-rotation member 6 and the mobile platform 5. The anti-rotation member 6 can also be rotated to eliminate torque generated by the rotation of the laser emitting end 1, thereby ensuring that the radial relative position of the laser emitting end 1 remains unchanged.

[0030] Furthermore, the top of the fixed bracket 4 is provided with an axially extending guide groove, to which the anti-rotation member 6 is connected via a guide post. A fixing fixture is provided on the top of the anti-rotation member 6, which is fixedly connected to the laser emitting end 1 of the fluorescent light source. The anti-rotation member 6 has a T-shaped structure.

[0031] The moving direction of the moving platform 5 is perpendicular to the focal plane of the first lens 2. The laser emitting end 1 includes but is not limited to an optical fiber head for transmitting the laser light source through an optical fiber line.

[0032] In this technical solution, the laser emitter 1 is fixed to a movable platform. When the fluorescent light source is replaced, the movable platform 5 can be moved up and down, driving the anti-rotation member 6 to move up and down, thereby adjusting the distance between the laser emitter 1 and the first lens 2. When the laser input divergence angle α of different fluorescent light source modules varies, the distance r between the platform and the lens focal plane is adjusted to ensure consistency in the laser output divergence angle β, resulting in consistent laser output from different fluorescent light source modules. Furthermore, the laser emitter 1 is fixed to the anti-rotation member 6. During the rotation of the movable platform 5, the laser emitter 1 is fixed to the anti-rotation member 6. The movable platform 5 and the fixed bracket are threaded together, and the distance r between the laser emitter 1 and the lens focal plane is adjusted by rotating the thread. The anti-rotation member 6 ensures that the laser emitter 1 does not rotate with the movable platform 5 during adjustment. After the distance is adjusted, the relative position of the movable platform 5 and the fixed bracket 4 is fixed by a positioning fastener 52, ensuring that the distance r between the laser emitter 1 and the lens focal plane does not change.

[0033] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] The specific implementation methods described above are preferred implementation methods of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the shape and structure of the present invention are within the scope of protection of the present invention.

Claims

1. A fluorescent light source module for an endoscope, characterized in that: It includes a fluorescent light source and a hollow fixed bracket, a first lens is provided at the upper end of the fixed bracket, a second lens is provided at the lower end of the fixed bracket, the upper end of the fixed bracket is movably connected to a hollow movable platform, a hollow anti-rotation part is provided above the movable platform, the anti-rotation part is axially slidably connected to the fixed bracket, the laser emitting end of the fluorescent light source is located in the middle of the anti-rotation part and faces the first lens and the second lens, the anti-rotation part is fixedly connected to the laser emitting end of the fluorescent light source, and the axis center lines of the laser emitting end of the fluorescent light source, the first lens, and the second lens are on the same straight line.

2. The fluorescent light source module for endoscope according to claim 1, characterized in that: The mobile platform is rotationally connected or slidingly connected to the fixed bracket.

3. The fluorescent light source module for endoscope according to claim 2, characterized in that: The upper portion of the fixed bracket is provided with an external thread, the movable platform is provided with an internal thread, and the movable platform is connected to the upper portion of the fixed bracket via threads.

4. The fluorescent light source module for endoscope according to claim 3, characterized in that: A positioning hole is provided on the side wall of the mobile platform, and the mobile platform is connected to the fixing bracket via a fastener provided in the positioning hole.

5. The fluorescent light source module for endoscope according to claim 4, characterized in that: The upper portion of the fixed bracket is a raised step portion, and the movable platform is connected to the step portion.

6. The fluorescent light source module for endoscope according to claim 5, characterized in that: The lower part of the anti-rotation part is located in the mobile platform, the upper part of the mobile platform is provided with a limiting fastener, the side wall of the anti-rotation part is provided with an annular U-shaped groove, and the limiting fastener is matched with the U-shaped groove.

7. The fluorescent light source module for endoscope according to any one of claims 1 to 6, characterized in that: A guide groove extending in the axial direction is provided on the top of the fixing bracket, and the anti-rotation member is connected to the guide groove via a guide column.

8. The fluorescent light source module for endoscope according to claim 7, characterized in that: A fixing fixture is provided on the top of the anti-rotation member, and the fixing fixture is fixedly connected to the laser emitting end of the fluorescent light source.

9. The fluorescent light source module for endoscope according to claim 8, characterized in that: The anti-rotation part is a T-shaped structure.

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