Aspherical optical endoscope lens for early cancer screening

Abstract

The utility model relates to optical endoscope lens related technical field discloses a kind of aspherical optical endoscope lens for early cancer screening, including for early cancer screening aspherical optical endoscope lens, including installation cylinder and mirror group, mirror group is arranged in the inside of the installation cylinder, and mirror group includes the objective lens assembly, relay lens assembly and eyepiece assembly in installation cylinder from left to right in turn coaxially, and installation cylinder is from left to right for light ray incident direction, the objective lens assembly is aspherical lens, the relay lens assembly is alternately glued by several pieces of spherical lens composition. The aspherical optical endoscope lens for early cancer screening, the early cancer tissue image details collected are clear, relay lens group reduces distortion and attenuation in signal conduction process, further guarantee the definition after image conduction, by the setting of sapphire glass, sapphire material protective glass hardness is high, wear resistance.

Description

Technical Field

[0001] This utility model relates to the technical field of optical endoscope lenses, specifically an aspherical optical endoscope lens for early cancer screening. Background Technology

[0002] Early cancer screening refers to medical measures that use targeted examination methods to detect abnormalities in the early stages of cancer or precancerous lesions, thereby significantly improving the cure rate and reducing the difficulty of treatment. In early cancer screening, the imaging quality of the optical endoscope lens directly affects the accuracy of lesion identification.

[0003] As disclosed in announcement number CN222506639U, an endoscope optical lens includes: a protective glass, a first lens, an aperture, a filter, and a second lens arranged sequentially along the incident light path. Both the first and second lenses are aspherical glass lenses, with the first lens being a plano-concave lens and the second lens being a biconvex positive lens. The incident light passes through the protective glass, the first lens, the aperture, the filter, and the second lens in sequence to form an image plane. Through the cooperation between the protective glass, the first lens, the aperture, the filter, and the second lens, a large field of view is achieved while ensuring the overall miniaturization of the lens structure, and high optical performance such as high resolution and high stability are also met.

[0004] However, existing technologies suffer from poor protection, short lifespan, low compatibility with image sensors, and cumbersome maintenance, as seen in the comparative patents listed above.

[0005] Therefore, this invention provides an aspherical optical endoscope lens for early cancer screening to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide an aspherical optical endoscope lens for early cancer screening, in order to solve the problems mentioned in the background art, such as poor protection, short lifespan, low image sensor adaptability, and cumbersome maintenance.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an aspherical optical endoscope lens for early cancer screening, comprising a mounting tube and a lens assembly;

[0008] Also includes:

[0009] The lens assembly is located inside the mounting tube, and the lens assembly includes an objective lens assembly, a relay lens assembly and an eyepiece assembly arranged coaxially from left to right in the mounting tube, and the light incident direction in the mounting tube is from left to right;

[0010] The objective lens assembly is an aspherical lens, the relay lens assembly is composed of several spherical lenses alternately cemented together, and is used to transmit the optical images of early cancer tissue acquired by the objective lens assembly. The eyepiece assembly is provided with an interface for connecting an image sensor, and the exit pupil diameter of the eyepiece assembly is adapted to the photosensitive surface diameter of the image sensor.

[0011] As a preferred embodiment of this invention, the optical surface of the objective lens assembly is an even-order aspherical structure.

[0012] By adopting the above technical solution, and using the even-order aspherical structure of the optical surface of the objective lens assembly, the image acquisition has high clarity.

[0013] As a preferred technical solution of this utility model, the inner wall of the mounting cylinder is provided with a matte thread, and connecting pipes are fixed at both ends of the endoscope tube, and the outer side of the connecting pipe is provided with an external thread that is compatible with the endoscope body.

[0014] By adopting the above technical solution, the inner wall of the mounting tube is provided with a light-extinguishing thread, and the two ends of the endoscope tube are respectively fixed with connecting tubes. The outer side of the connecting tube is provided with an external thread that is compatible with the endoscope body, which facilitates stable assembly with external equipment. The combined design can also reduce stray light interference.

[0015] As a preferred technical solution of this utility model, an anti-slip pad is provided on the outer side of the connecting tube, and the anti-slip pad is attached to the connection between the mounting tube and the endoscope body.

[0016] By adopting the above technical solution, an anti-slip pad is fitted on the outside of the connecting tube, and the anti-slip pad fits into the connection between the mounting tube and the endoscope body, thereby improving the tightness of the connection with external equipment.

[0017] As a preferred embodiment of the present invention, the front end of the objective lens assembly is provided with sapphire glass, and the outer surface of the sapphire glass is coated with an anti-reflective film.

[0018] By adopting the above technical solution, sapphire glass is set at the front end of the objective lens assembly, and the outer surface of the sapphire glass is coated with an anti-reflective film, which improves the protection effect and anti-reflective properties.

[0019] As a preferred embodiment of this utility model, the interface and the eyepiece assembly are placed side by side on the outside of the mounting cylinder, and the inner side of the interface is also provided with a positioning protrusion for positioning the image sensor.

[0020] By adopting the above technical solution, the interface and the eyepiece assembly are placed side by side on the outside of the mounting cylinder, and the inside of the interface is also provided with a positioning protrusion for positioning the image sensor, which can stably connect to external devices.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: the aspherical optical endoscope lens for early cancer screening has an even-order aspherical objective lens group, which captures clear details of early cancer tissue images; the relay lens group reduces distortion and attenuation during signal transmission, further ensuring the clarity of the image after transmission; the sapphire glass protection is highly durable and wear-resistant, effectively protecting the lens and extending its service life; the anti-reflective coating reduces signal loss and ensures imaging stability.

[0022] 1. It is equipped with an objective lens assembly and a relay lens assembly. Through the setup of the objective lens assembly and the relay lens assembly, the acquired early cancer tissue images are clear in detail. The relay lens assembly reduces the distortion and attenuation during signal transmission, further ensuring the clarity of the image after transmission.

[0023] 2. It is equipped with a matte thread, a connecting tube, and an external thread. The matte thread on the inner wall of the mounting cylinder reduces stray light interference and prevents stray light from affecting the image quality. The connecting tubes at both ends are equipped with external threads to achieve a stable assembly of the lens and the endoscope body, reduce the risk of loosening during use, and reduce maintenance costs caused by equipment failure.

[0024] 3. It is equipped with an interface and a positioning protrusion. The positioning protrusion is set on the inner side of the interface. The exit pupil diameter is adapted to the sensor photosensitive surface diameter, which can be compatible with different types of image sensors and expand the application range of the lens. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a frontal sectional view of the present invention.

[0028] Figure 3 This is a cross-sectional view of the mounting cylinder and matte thread of this utility model;

[0029] Figure 4 This is a schematic diagram of the exploded structure of the mounting cylinder, connecting pipe, and anti-slip pad of this utility model;

[0030] Figure 5 This is a schematic diagram of the overall structure of the sapphire glass and anti-reflective film of this utility model;

[0031] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0032] In the diagram: 1. Mounting tube; 2. Objective lens assembly; 3. Relay lens assembly; 4. Eyepiece assembly; 5. Matting thread; 6. Connecting tube; 7. External thread; 8. Anti-slip pad; 9. Sapphire glass; 10. Anti-reflective film; 11. Interface; 12. Positioning protrusion. Detailed Implementation

[0033] 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 some embodiments of the present utility model, and not all embodiments. 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.

[0034] Please see Figures 1-6 The present invention provides the following technical solution:

[0035] To address the problems of poor protection, short lifespan, low image sensor compatibility, and cumbersome maintenance in existing technologies, this solution provides an aspherical optical endoscope lens for early cancer screening. The lens comprises a mounting cylinder 1 and a lens assembly. The lens assembly is located inside the mounting cylinder 1 and includes an objective lens assembly 2, a relay lens assembly 3, and an eyepiece assembly 4, coaxially arranged from left to right within the mounting cylinder 1. The light incident direction within the mounting cylinder 1 is from left to right. The objective lens assembly 2 is an aspherical lens. The relay lens assembly 3 is composed of several alternately cemented spherical lenses and is used to transmit the optical images of early cancer tissue acquired by the objective lens assembly 2. The eyepiece assembly 4 has an interface 11 for connecting to an image sensor, and the exit pupil diameter of the eyepiece assembly 4 is adapted to the photosensitive surface diameter of the image sensor.

[0036] like Figure 1 and Figure 2 As shown, the optical signal from early-stage cancer tissue first enters the objective lens assembly 2. The aspherical lens of objective lens assembly 2 is made of highly transparent ultraviolet and visible light quartz glass. The aspherical quartz glass lens in objective lens assembly 2 can efficiently capture the signal, and the even-order aspherical structure is used to initially correct optical distortion, ensuring that the acquired tissue image is clear and without significant distortion. The image signal acquired by objective lens assembly 2 is transmitted to relay lens assembly 3. Relay lens assembly 3 consists of several alternately cemented spherical lenses, which can stably transmit the image signal, avoid signal attenuation or shift, and ensure the integrity of the image during transmission from objective lens assembly 2 to eyepiece assembly 4. The image signal transmitted by relay lens assembly 3 enters eyepiece assembly 4, such as... Figure 6As shown, the eyepiece assembly 4 is connected to the image sensor through the matching interface 11. The inner side of the interface 11 is provided with a positioning protrusion 12 to improve the stability of the connection. The exit pupil diameter matches the sensor photosensitive surface diameter, which can accurately output clear early cancer tissue images to the image sensor.

[0037] In addition, such as Figure 3 , Figure 4 and Figure 5 As shown, the front end of the objective lens assembly 2 is provided with sapphire glass 9, and the outer side of the sapphire glass 9 is coated with an anti-reflective film 10 to protect the lens from external damage. The anti-reflective film 10 reduces signal reflection loss. The inner wall of the mounting tube 1 is also provided with an anti-light thread 5 to reduce stray light interference. Both ends of the mounting tube 1 are provided with connecting tubes 6, and the outer side of the connecting tubes 6 is provided with external threads 7. At the same time, the outer side of the connecting tubes 6 is fitted with an anti-slip pad 8. The anti-slip pad 8 fits against the connection between the mounting tube 1 and the endoscope body to facilitate the stable assembly of the lens and the endoscope body.

[0038] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An aspherical optical endoscope lens for early cancer screening, comprising a mounting tube (1) and a lens assembly; Its features are, Also includes: The lens assembly is located inside the mounting tube (1), and the lens assembly includes an objective lens assembly (2), a relay lens assembly (3) and an eyepiece assembly (4) arranged coaxially from left to right in the mounting tube (1), and the light incident direction in the mounting tube (1) is from left to right; The objective lens assembly (2) is an aspherical lens, the relay lens assembly (3) is composed of several spherical lenses bonded together alternately, and is used to transmit the optical image of early cancer tissue acquired by the objective lens assembly (2). The eyepiece assembly (4) is provided with an interface (11) for connecting to the image sensor, and the exit pupil diameter of the eyepiece assembly (4) is adapted to the photosensitive surface diameter of the image sensor.

2. The aspherical optical endoscope lens for early cancer screening according to claim 1, characterized in that: The optical surface of the objective lens assembly (2) is an even-order aspherical structure.

3. The aspherical optical endoscope lens for early cancer screening according to claim 1, characterized in that: The inner wall of the mounting tube (1) is provided with a matte thread (5), and the two ends of the endoscope tube are respectively fixed with connecting tubes (6), and the outer side of the connecting tube (6) is provided with an external thread (7) that is compatible with the endoscope body.

4. The aspherical optical endoscope lens for early cancer screening according to claim 3, characterized in that: The outer side of the connecting tube (6) is fitted with an anti-slip pad (8), and the anti-slip pad (8) is attached to the connection between the mounting tube (1) and the endoscope body.

5. The aspherical optical endoscope lens for early cancer screening according to claim 1, characterized in that: The objective lens assembly (2) is provided with a sapphire glass (9) at the front end, and the outer surface of the sapphire glass (9) is coated with an anti-reflective film (10).

6. The aspherical optical endoscope lens for early cancer screening according to claim 1, characterized in that: The interface (11) is placed on the outside of the mounting tube (1) alongside the eyepiece assembly (4), and the inner side of the interface (11) is also provided with a positioning protrusion (12) for positioning the image sensor.

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