Endoscope probe under ultra-high temperature condition

Abstract

The invention provides an endoscope probe under an ultra-high temperature condition, and relates to the technical field of endoscope probes, the endoscope probe comprises a camera, a high-temperature-resistant lens mechanism on one side of the camera, an optical fiber mechanism is arranged on one side of the camera, the lens mechanism comprises an objective lens module, the optical fiber mechanism comprises an optical fiber shell, the objective lens module is located on the inner side wall of the optical fiber shell, and the objective lens module is located on the inner side wall of the optical fiber shell. The optical fiber shell is located on one side of the camera, a titanium alloy outer layer is fixedly installed at the lower end of the optical fiber shell, and an eyepiece is fixedly installed on the inner side wall of the optical fiber shell. According to the device, the sapphire glass is arranged in the titanium alloy outer layer, so that the sapphire glass can bear high temperature and cannot be deformed or damaged at the temperature of 500 DEG C or even higher when the endoscope is used in various high-temperature environments such as close to high-temperature equipment in some industrial detection scenes, and the service life of the endoscope is prolonged. And the normal use of the endoscope in a severe high-temperature environment is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of endoscope probes, and more particularly relates to endoscope probes under ultra-high temperature conditions. Background Art

[0002] Industrial endoscopes are primarily used in automobiles, aircraft engines, pipelines, and mechanical parts. They can be used for internal inspections of large machinery and equipment, as well as in locations where direct observation by the human eye is impossible due to high temperatures, toxic substances, nuclear radiation, or confined environments. These devices can perform non-destructive testing without disassembling or disrupting the assembly or stopping the equipment, effectively avoiding the adverse effects of direct observation on the observer. For high-temperature objects, such as running engines and burning boilers, high-temperature-resistant industrial endoscopes are required.

[0003] Chinese patent publication number: CN106725246A, discloses an endoscopic probe, wherein the light source's light direction is parallel to the probe's axis, and the reflector's surface is arranged at an acute angle to the light source's mounting plane. This probe provides clear, undistorted side imaging.

[0004] Existing endoscopes have the following disadvantages when used: 1. Existing endoscopes are usually not resistant to high temperatures, which limits their applicable working environments. When used in some high-temperature environments, they cannot perform detection and diagnosis, such as high-temperature industrial furnaces, inside engines, etc. This will greatly limit the scope of application of endoscopes and make some important detection work impossible. 2. If the endoscope is not resistant to high temperatures, problems may occur in the optical system of the endoscope. The lens may lose focus due to thermal expansion and contraction, and the image may become blurred; or the refractive index of the optical element may change, affecting color reproduction and contrast, resulting in a decrease in image quality.

[0005] Therefore, in view of this, research and improvement are conducted on the existing structure and defects, and an endoscopic probe under ultra-high temperature conditions is provided in order to achieve a more practical purpose. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides an endoscope probe under ultra-high temperature conditions to solve the above problems.

[0007] An endoscopic probe under ultra-high temperature conditions comprises a camera, a high-temperature resistant lens mechanism on one side of the camera, an optical fiber mechanism on one side of the camera, an objective lens module, an optical fiber mechanism comprising an optical fiber housing, the objective lens module being located on the inner side wall of the optical fiber housing, the optical fiber housing being located on one side of the camera, a titanium alloy outer layer being fixedly mounted on the lower end of the optical fiber housing, an eyepiece being fixedly mounted on the inner side wall of the optical fiber housing, an inner optical fiber bundle being fixedly mounted on the inner side wall of the optical fiber housing, the inner optical fiber bundle being located on one side of the eyepiece, the objective lens module being located on one side of the inner optical fiber bundle, and a titanium alloy outer layer being integrated on the objective lens module. The titanium alloy outer layer comprises a first Kirk objective lens fixedly mounted on an inner side wall of the titanium alloy outer layer, a second Kirk objective lens and a third Kirk objective lens fixedly mounted on an inner side wall of the titanium alloy outer layer, the third Kirk objective lens being located on one side of the second Kirk objective lens, a sapphire glass fixedly mounted on the inner side wall of the titanium alloy outer layer, a first graphene adhesive layer being coated between the sapphire glass and the inner side wall of the titanium alloy outer layer, one side of the first Kirk objective lens, the second Kirk objective lens and the third Kirk objective lens being coated with a second graphene adhesive layer, and the other side of the first Kirk objective lens, the second Kirk objective lens and the third Kirk objective lens being coated with a third graphene adhesive layer.

[0008] Preferably, a plurality of optical fiber bodies are integrated on the inner optical fiber bundle, and each of the optical fiber bodies is provided with an optical fiber inner core.

[0009] Preferably, the diameter of the optical fiber body is 125 microns, the diameter of the optical fiber inner core is 4 microns, the circumference of the inner optical fiber bundle is coated with an outer coating layer, and the thickness of the outer coating layer is 3 millimeters.

[0010] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, sapphire glass is arranged inside the titanium alloy outer layer. During the use of the endoscope, various high-temperature environments may be encountered, such as near high-temperature equipment in certain industrial detection scenarios. The sapphire glass can withstand high temperatures and ensure that it will not be deformed or damaged at temperatures as high as 500°C or even higher. This ensures the normal use of the endoscope in harsh high-temperature environments, avoids the problem of lens glass deformation due to high temperature affecting the imaging quality, and ensures the accuracy and reliability of the detection.

[0011] In the present invention, sapphire glass is used. Sapphire glass has extremely high hardness, second only to diamond, which makes it resistant to various scratches and wear during use. Even if it is frequently used in complex environments, the clarity and smoothness of the lens can be maintained. Sapphire glass has good chemical stability and is not easily corroded by chemicals such as acids and alkalis. In some special detection environments, it may be exposed to various chemicals. Sapphire glass can ensure that the lens is not corroded and the imaging quality is guaranteed.

[0012] In the present invention, by adopting highly light-transmitting sapphire glass, sapphire glass has extremely high transmittance to visible light and can provide clear and bright images. When using an endoscope, the high light transmittance allows doctors or inspectors to more accurately observe the details of the inspected object, thereby improving the accuracy of diagnosis and detection.

[0013] In the present invention, by adopting the first graphene adhesive layer, the second graphene adhesive layer and the third graphene adhesive layer, the first graphene adhesive layer, the second graphene adhesive layer and the third graphene adhesive layer are all graphite conductive adhesives that are resistant to high temperatures of 500°C and have good bonding properties. They can firmly fix the sapphire glass and the titanium alloy outer layer together. During the use of the endoscope, the glass and the hardware will not be separated due to vibration, collision, etc., thereby ensuring the stability and reliability of the equipment.

[0014] In the present invention, by providing a first high-temperature resistant graphene adhesive layer, since the graphite conductive adhesive can also withstand high temperatures up to 500°C, which matches the high-temperature resistance of sapphire glass, in a high-temperature environment, the glass will not fall off due to softening or failure of the glue, thereby ensuring the normal use of the endoscope in a high-temperature environment.

[0015] In the present invention, through the design of the optical imaging module, the structural design of the optical fiber to transmit the light signal is proposed to make the aperture only four millimeters. The coating material of the optical fiber adopts a gold-plated coating, which makes it have excellent corrosion resistance and enables the optical fiber to reach a temperature range of -269°C to 700°C. The advantages brought by the above structure include high temperature resistance, a small aperture of only four millimeters, portability, and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the optical imaging module of the present invention; Figure 2 Schematic diagram of the optical fiber structure of the present invention; Figure 3 1 is a schematic structural diagram of the objective lens module of the present invention; Figure 4 It is a schematic diagram of the imaging structure of the objective lens of the present invention.

[0017] In the figure, the correspondence between the component names and the drawing numbers is: 1. Camera; 2. Fiber optic housing; 21. Inner fiber optic bundle; 23. Eyepiece; 24. Fiber optic body; 25. Fiber optic core; 26. Outer coating; 3. Objective lens module; 31. Titanium alloy outer layer; 32. Sapphire glass; 33. First graphene adhesive layer; 34. First Kirk objective lens; 35. Second Kirk objective lens; 36. Third Kirk objective lens; 37. Second graphene adhesive layer; 38. Third graphene adhesive layer. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0019] See also Figures 1-4 The present invention provides an endoscope probe under ultra-high temperature conditions, including a camera 1, a high-temperature resistant lens mechanism on one side of the camera 1, an optical fiber mechanism on one side of the camera 1, the lens mechanism including an objective lens module 3, the optical fiber mechanism including an optical fiber housing 2, the objective lens module 3 is located on the inner side wall of the optical fiber housing 2, the optical fiber housing 2 is located on one side of the camera 1, a titanium alloy outer layer 31 is fixedly installed on the lower end of the optical fiber housing 2, an eyepiece 23 is fixedly installed on the inner side wall of the optical fiber housing 2, an inner optical fiber bundle 21 is also fixedly installed on the inner side wall of the optical fiber housing 2, the inner optical fiber bundle 21 is located on one side of the eyepiece 23, the objective lens module 3 is located on one side of the inner optical fiber bundle 21, a titanium alloy outer layer 31 is integrated on the objective lens module 3, and a first Kirk objective lens is fixedly installed on the inner side wall of the titanium alloy outer layer 31 34. A second Kirk objective lens 35 and a third Kirk objective lens 36 are fixedly mounted on the inner side wall of the titanium alloy outer layer 31. The third Kirk objective lens 36 is located on one side of the second Kirk objective lens 35. A sapphire glass 32 is fixedly mounted on the inner side wall of the titanium alloy outer layer 31. The sapphire glass 32 is arranged inside the titanium alloy outer layer 31. During the use of the endoscope, various high-temperature environments may be encountered, such as near high-temperature equipment in certain industrial detection scenarios. The sapphire glass 32 can withstand high temperatures and ensure that it will not deform or be damaged at temperatures as high as 500°C or even higher, thereby ensuring the normal use of the endoscope in harsh high-temperature environments, avoiding the problem of lens glass deformation caused by high temperature affecting the imaging quality, and ensuring the accuracy and reliability of the detection; A first graphene adhesive layer 33 is coated between the sapphire glass 32 and the inner side wall of the titanium alloy outer layer 31. A second graphene adhesive layer 37 is coated on one side of the first Kirk objective lens 34, the second Kirk objective lens 35, and the third Kirk objective lens 36. A third graphene adhesive layer 38 is coated on the other side of the first Kirk objective lens 34, the second Kirk objective lens 35, and the third Kirk objective lens 36. The first graphene adhesive layer 33, the second graphene adhesive layer 37, and the third graphene adhesive layer 38 are all graphite conductive adhesives that are resistant to high temperatures of 500°C and have good bonding properties. They can firmly fix the sapphire glass 32 and the titanium alloy outer layer 31 together. During the use of the endoscope, the glass and the hardware will not separate due to vibration, collision, etc., thereby ensuring the stability and reliability of the equipment. The titanium alloy outer layer 31 used in the present device is a titanium alloy one-piece molded lens with a thickness of one millimeter. The outer layer has a circular structure, and the inner layer has an elliptical structure. The sapphire glass 32, the first Kirk objective lens 34, the second Kirk objective lens 35, and the third Kirk objective lens 36 are also elliptical structures. The first Kirk objective lens 34, the second Kirk objective lens 35, and the third Kirk objective lens 36 are placed in sequence inside the titanium alloy outer layer 31. Taking the three-lens type as an example, the two ends of the objective lens are coated with a second graphene adhesive layer 37 and a third graphene adhesive layer 38 respectively. The first Kirk objective lens 34, the second Kirk objective lens 35, the third Kirk objective lens 36, and the titanium alloy outer layer 31 are transversely cut into and then the lens of the objective lens is rotated so that it is fixed inside the titanium alloy outer layer 31. A plurality of optical fiber bodies 24 are integrated on the inner optical fiber bundle 21, and each optical fiber body 24 is provided with an optical fiber inner core 25. The diameter of the optical fiber body 24 is 125 microns, and the diameter of the optical fiber inner core 25 is 4 microns. The circumference of the inner optical fiber bundle 21 is coated with an outer coating 26, and the thickness of the outer coating 26 is 3 millimeters. The present device intends to adopt an optical fiber to transmit optical signals in the optical imaging module, and transmits the optical signal containing image information obtained by the lens to the CMOS module using optical fiber. Optical fiber is a glass fiber material that can transmit optical signals using the principle of total reflection of light. Compared with the spatial optical path structure, optical fiber can be bent within a certain angle range without affecting the transmission quality of the optical signal. The operating temperature of common optical fibers is -40°C to 70°C. The outer coating of the optical fiber adopts a gold-plated coating, which makes it have excellent corrosion resistance, so that the temperature range that the optical fiber can reach is -269°C to 700°C.

[0020] Working principle: First, industrial endoscopes are mainly used in automobiles, aircraft engines, pipelines, mechanical parts, etc. They can be used for internal inspection of large mechanical equipment, as well as some places that cannot be directly observed by the human eye due to excessive temperature, toxicity, nuclear radiation or too small environment. For some high-temperature objects, such as running engines, burning boilers and other scenes, high-temperature resistant industrial endoscopes are required; In the second step, the titanium alloy outer layer 31 used in the outer layer of the present device is a titanium alloy one-piece molded lens with a thickness of one millimeter. The outer layer is a circular structure and the inner layer is an elliptical structure. The sapphire glass 32, the first Kirk objective lens 34, the second Kirk objective lens 35 and the third Kirk objective lens 36 are also elliptical structures. The first Kirk objective lens 34, the second Kirk objective lens 35 and the third Kirk objective lens 36 are placed in sequence inside the titanium alloy outer layer 31. Taking the three-piece type as an example, the two ends of the objective lens are coated with a second graphene adhesive layer 37 and a third graphene adhesive layer 38 respectively. The first Kirk objective lens 34, the second Kirk objective lens 35, the third Kirk objective lens 36 and the titanium alloy outer layer 31 are cross-cut into and then the lens of the objective lens is rotated so that it is just fixed inside the titanium alloy outer layer 31. The objective lens is arranged according to the attached Figure 4The distance structures of the objective lens imaging principle diagram are respectively installed and fixed inside the lens, and multiple Kirk objective lenses are installed and fixed into the titanium alloy outer layer 31 in the same way. Finally, sapphire glass 32 is installed at the front of the titanium alloy outer layer 31; This device incorporates sapphire glass 32 within the titanium alloy outer layer 31. During the use of the endoscope, it may encounter various high-temperature environments, such as near high-temperature equipment in certain industrial inspection scenarios. The sapphire glass 32 can withstand high temperatures and ensures that it will not deform or damage even at temperatures of up to 500°C or even higher. This ensures the normal use of the endoscope in harsh high-temperature environments, avoids the problem of lens glass deformation caused by high temperatures affecting imaging quality, and ensures the accuracy and reliability of inspections. This device uses sapphire glass 32, which has an extremely high hardness, second only to diamond. This makes it resistant to various scratches and wear during use. Even when used frequently in complex environments, it can maintain the clarity and smoothness of the lens. Sapphire glass 32 has good chemical stability and is not easily corroded by acids, alkalis and other chemicals. In some special testing environments, it may be exposed to various chemicals. Sapphire glass 32 can ensure that the lens is not corroded and the imaging quality is guaranteed; This device uses highly translucent sapphire glass 32, which has a very high transmittance to visible light and can provide clear and bright images. During the use of the endoscope, the high translucent property allows doctors or inspectors to more accurately observe the details of the inspected object, thereby improving the accuracy of diagnosis and inspection. This device uses a first graphene adhesive layer 33, a second graphene adhesive layer 37, and a third graphene adhesive layer 38. The first graphene adhesive layer 33, the second graphene adhesive layer 37, and the third graphene adhesive layer 38 are all graphite conductive adhesives that are resistant to high temperatures of 500°C and have good bonding properties. They can firmly fix the sapphire glass 32 and the titanium alloy outer layer 31 together. During the use of the endoscope, the glass and the hardware will not be separated due to vibration, collision, etc., ensuring the stability and reliability of the device. This device is provided with a high-temperature resistant first graphene adhesive layer 33. Since the graphite conductive adhesive can also withstand temperatures up to 500°C, it matches the high-temperature resistance of the sapphire glass 32. In a high-temperature environment, the glass will not fall off due to softening or failure of the adhesive, ensuring the normal use of the endoscope in a high-temperature environment. In the third step, the device intends to use the solution of optical fiber to transmit light signals in the optical imaging module, and transmit the light signal containing image information obtained by the lens to the CMOS module through optical fiber. Optical fiber is a kind of glass fiber material that can transmit light signals by the principle of total reflection of light. Compared with the spatial optical path structure, optical fiber can be bent within a certain angle range without affecting the transmission quality of the light signal. The working temperature of common optical fiber is -40℃ to 70℃. The outer coating of the optical fiber adopts gold coating, which makes it have excellent corrosion resistance, so that the temperature range of the optical fiber can reach is -269℃ to 700℃. The titanium alloy is bonded with graphite conductive adhesive. The gold layer and the optical fiber coating can be tightly combined, and have the advantages of high temperature resistance, wear resistance, oil resistance, and corrosion resistance. Combined with the high-temperature protective layer of this project, high-temperature working conditions of 500°C can be easily achieved. The optical fiber consists of an optical fiber body 24, an optical fiber inner core 25, and an outer coating 26. The core diameter of the optical fiber transmitting visible light band is usually around four microns, the cladding is usually 125 microns, and the coating is 245 microns. This plan proposes to use a high-density optical fiber bundle to receive the light signal refracted by the lens. It is expected that at least 12×12 optical fibers will be arranged within a three-millimeter diameter range to meet the four-millimeter diameter size requirement of the probe. Through the design of the optical imaging module, this device intends to use an optical fiber to transmit light signals, resulting in an aperture of only four millimeters. The optical fiber coating material adopts a gold-plated coating, which gives it excellent corrosion resistance and enables the optical fiber to reach a temperature range of -269°C to 700°C. The advantages brought by the above structure include high temperature resistance, a small aperture of only four millimeters, portability, and stability.

[0021] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. An endoscopic probe under ultra-high temperature conditions, comprising a camera (1), characterized in that: One side of the camera (1) is provided with a high-temperature resistant lens mechanism, and one side of the camera (1) is provided with an optical fiber mechanism; The lens mechanism comprises an objective lens module (3), the optical fiber mechanism comprises an optical fiber housing (2), the objective lens module (3) is located on the inner side wall of the optical fiber housing (2), the optical fiber housing (2) is located on one side of the camera (1), and a titanium alloy outer layer (31) is fixedly mounted on the lower end of the optical fiber housing (2).

2. The ultra-high temperature endoscope probe according to claim 1, characterized in that: An eyepiece (23) is fixedly mounted on the inner side wall of the optical fiber housing (2).

3. The ultra-high temperature endoscopic probe according to claim 2, characterized in that: An inner optical fiber bundle (21) is also fixedly mounted on the inner side wall of the optical fiber housing (2), and the inner optical fiber bundle (21) is located on one side of the eyepiece (23).

4. The ultra-high temperature endoscope probe according to claim 3, characterized in that: The objective lens module (3) is located on one side of the inner optical fiber bundle (21).

5. The ultra-high temperature endoscopic probe according to claim 4, characterized in that: A titanium alloy outer layer (31) is integrated on the objective lens module (3), and a first Kirk objective lens (34) is fixedly mounted on the inner side wall of the titanium alloy outer layer (31).

6. The ultra-high temperature endoscopic probe according to claim 5, characterized in that: A second Kirk objective lens (35) and a third Kirk objective lens (36) are also fixedly mounted on the inner side wall of the titanium alloy outer layer (31), and the third Kirk objective lens (36) is located on one side of the second Kirk objective lens (35).

7. The ultra-high temperature endoscopic probe according to claim 6, characterized in that: A sapphire glass (32) is fixedly mounted on the inner side wall of the titanium alloy outer layer (31), and a first graphene adhesive layer (33) is coated between the sapphire glass (32) and the inner side wall of the titanium alloy outer layer (31).

8. The ultra-high temperature endoscopic probe according to claim 7, characterized in that: One side of the first Kirk objective lens (34), the second Kirk objective lens (35) and the third Kirk objective lens (36) is coated with a second graphene adhesive layer (37), and the other side of the first Kirk objective lens (34), the second Kirk objective lens (35) and the third Kirk objective lens (36) is coated with a third graphene adhesive layer (38).

9. The ultra-high temperature endoscopic probe according to claim 8, characterized in that: A plurality of optical fiber bodies (24) are integrated on the inner optical fiber bundle (21), and each optical fiber body (24) is provided with an optical fiber inner core (25).

10. The ultra-high temperature endoscopic probe according to claim 9, characterized in that: The diameter of the optical fiber body (24) is one hundred and twenty-five micrometers, and the diameter of the optical fiber core (25) is four micrometers; The circumference of the inner optical fiber bundle (21) is coated with an outer coating layer (26), and the thickness of the outer coating layer (26) is three millimeters.

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