Light-light imaging apparatus

Abstract

The invention provides low-light-level camera shooting equipment, and belongs to the field of low-light-level camera shooting, the low-light-level camera shooting equipment comprises a viewing assembly and a low-light-level assembly, the viewing assembly is a cylindrical viewing and aiming piece, and the two axial ends of the viewing and aiming piece are sealed through lenses; the low-light-level assembly comprises an optical fiber body and a heat conduction reflection structure wrapping the optical fiber body, the optical fiber body comprises a first part located in the observing and aiming piece and a second part located in the observing and aiming piece, one part of the optical fiber body is arranged on the periphery of the observing and aiming piece, and the heat conduction reflection structure is arranged on one side of the observing and aiming piece. The periphery of the second part is wrapped with a heat conduction reflection structure, and the heat conduction reflection structure of the first part and the heat conduction reflection structure of the second part are integrally connected. Compared with the prior art, the low-light component is arranged on the observing and aiming piece, so that the technical problem that water vapor is condensed on a lens of an existing lens module easily due to internal and external temperature difference is solved, the whole lens module is compact in structure and sufficient in light inlet amount, and the technical problem that aiming point brightness of existing low-light equipment is insufficient is solved.

Description

Technical Field

[0001] The invention belongs to the field of low-light-level photography, and more specifically, relates to a low-light-level photography device. Background Art

[0002] The subjects of video recording are the photographer, the subject and the video equipment. The subject is used as the reference for focusing and the picture is recorded on the video equipment. The operation process of capturing the picture is divided into long shot, panoramic shot, medium shot, close shot, close-up and microscopic shot. Video recording techniques include the use of lenses - push, pull, shake, move, follow, etc., and the combination of lenses - fade out, fade in, switch and superimpose, etc. In the wide-angle stage of the start and the telephoto stage of the end, as well as when changing the lens focal length or moving the camera position, always keep the lens frame aimed at the subject for shooting.

[0003] With the development of technology and the demand for observation, video is no longer limited to external scenes with good lighting conditions. In the case of poor lighting conditions, corresponding low-light or infrared sighting components can be used to improve the imaging quality of the camera, so that the photographer can observe or shoot the corresponding object. Among them, low-light camera equipment refers to an instrument that uses natural night sky lights such as weak moonlight, starlight, atmospheric glow, and Milky Way light at night as illumination, and uses a light intensifier to amplify the weak photons reflected back by the target and convert them into visible images to achieve night observation. The important part of the low-light night vision device is the light image intensifier. It can be used in military, police, outdoor, power detection, scientific research, hunting, observation and other equipment. However, the existing cameras are all consumer cameras. When there are large temperature differences and humidity changes in the wild, such as in the morning and evening, indoors and outdoors, it is easy to generate water vapor in the camera. To solve this problem, the traditional solution is to place the lens module in a closed cavity and fill the closed cavity with dry high-pressure nitrogen to prevent water vapor from entering. However, due to the harsh external use environment, the lens module will be scrapped as a whole if it leaks. After the leak, the internal high-pressure nitrogen escapes, and water vapor will still be generated in the lens. In addition, on-site users cannot perform simple repairs, which causes great inconvenience to on-site users and is in urgent need of improvement. Summary of the invention

[0004] The object of the present invention is to provide a low-light camera device to solve the technical problem that water vapor condenses on the lens due to the temperature difference between the inside and outside of the existing lens module.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a low-light camera device, comprising:

[0006] The observation assembly comprises a cylindrical observation member, both ends of which are sealed by lenses;

[0007] A micro-light component, the micro-light component includes an optical fiber body and a heat-conducting reflective structure coated on the optical fiber body, the optical fiber body includes a first part located in the sighting piece, and a second part located in the sighting piece, the first part and the second part are connected as one body, the first part of the optical fiber body is arranged on the periphery of the sighting piece, and the heat-conducting reflective structure is arranged on a side of the first part adjacent to the sighting piece, the periphery of the second part is wrapped with the heat-conducting reflective structure, and the heat-conducting reflective structure of the first part and the heat-conducting reflective structure of the second part are connected as one body.

[0008] In a possible implementation, the heat-conducting reflective structure includes a heat-conducting layer and a reflective layer. The reflective layer located outside the sighting piece can reflect external light sources to the first portion of the optical fiber body, and the heat-conducting layer can balance the temperature inside and outside the sighting piece.

[0009] In a possible implementation, the heat conducting layer is made of copper, and the reflective layer is made of silver.

[0010] In a possible implementation, the heat conductive layer includes an outer shell, a capillary layer and a coolant. The outer shell is made of copper or silver. A closed cavity for accommodating the capillary layer and the coolant is formed in the outer shell, and the outer wall of the outer shell is wrapped around the outer periphery of the reflective layer. The capillary layer is attached to the inner wall of the outer shell. The capillary layer can absorb the coolant when cooled and can volatilize the coolant when heated.

[0011] In a possible implementation, a mounting groove for fixing the shell is provided on the outer periphery of the sighting member, and the shell is clamped in the mounting groove.

[0012] In a possible implementation, the observation component also includes a protective cover, which is made of transparent glass or plastic. The foldable cover of the protective cover is arranged in the installation groove, and the optical fiber body, the reflective layer and the outer shell are all arranged between the protective cover and the installation groove.

[0013] In a possible implementation, the installation groove is in an annular or spiral shape coaxial with the sighting piece, and the first portion of the optical fiber body is disposed in the installation groove around the axis of the sighting piece.

[0014] In a possible implementation, the cross section of the shell is in the shape of an arc coaxial with the optical fiber body, and a thermally conductive silicone is provided on the outer wall of the shell adjacent to the optical fiber body, and the thermally conductive silicone is used to connect the shell and the reflective layer.

[0015] In a possible implementation manner, the reflective layer is connected to the heat conductive layer by electroplating or chemical plating.

[0016] In a possible implementation, the protective cover is disposed to protrude away from the optical fiber body on one side thereof, and the protective cover can focus external light on the first portion of the optical fiber body.

[0017] Compared with the prior art, the low-light camera device provided by the present invention has the following beneficial effects:

[0018] Firstly, the optical fiber body can introduce various external light sources into the interior of the sighting piece, so that a light aiming point is formed inside the sighting piece, so as to provide a reference point for the observation process of low-light camera; in this process, the heat-conducting reflective structure in the present invention can enhance the amount of light entering the first part of the optical fiber body, thereby enhancing the technical problem that the light aiming point in the sighting piece is easily unable to meet the brightness requirements due to poor external lighting conditions; in addition, the heat-conducting reflective mechanism in the present embodiment can also balance the internal and external temperatures of the sighting piece, and prevent the condensation of water vapor inside or outside the sighting piece due to the temperature difference between the inside and the outside, thereby facilitating the sighting piece to always maintain good imaging quality; not only that, the heat-conducting reflective structure in the present invention independently arranges the two parts of the optical fiber body, minimizes the overall mass of the heat-conducting reflective structure and the space occupied in the sighting piece, and makes the overall structure of the entire low-light camera device more compact and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the prior art description. 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 creative work. In the drawings:

[0020] Figure 1 A schematic diagram of the overall structure of the low-light camera device provided by the present invention;

[0021] Figure 2 is a cross-sectional view of the low-light imaging device of the present invention;

[0022] Figure 3 for Figure 2 A cross-sectional view of the portion shown at A in the middle;

[0023] Figure 4 This is a schematic structural diagram of a low-light component in the low-light camera device provided by the present invention.

[0024] In the figure:

[0025] 1. Observation assembly; 10. Mounting slot; 11. Observation and aiming piece; 12. Protective cover;

[0026] 2. Micro-optical component; 21. Optical fiber body; 22. Heat-conducting reflective structure; 23. Heat-conducting layer; 24. Reflective layer. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0028] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inside" and "back" appear to indicate orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0029] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection", and "connector" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Please also read Figures 1 to 4 The low-light camera device provided by the present invention is now described. Generally speaking, the low-light camera device in the present application mainly increases the amount of light entering the optical fiber body 21 by setting a reflective structure on one side of the optical fiber body 21, and increases the heat exchange speed inside and outside the sighting piece 11 by setting a corresponding heat-conducting structure, so that the temperature difference between the inside and outside of the sighting piece 11 is controlled within a reasonable range, thereby solving the technical problem that the lens module of the existing low-light camera device is prone to condensation of water vapor or even ice on the lens due to the temperature difference between the inside and outside.

[0032] Based on the above overall design concept, in a specific implementation, the low-light camera device includes an observation component 1 and a low-light component 2, wherein the observation component 1 includes a cylindrical observation and aiming member 11, and the two axial ends of the observation and aiming member 11 are sealed by lenses to form a sealed space inside the observation and aiming member 11, and the sealed space can also be filled with dry inert gas to improve the overall performance of the observation and aiming member 11; in addition, in this embodiment, the low-light component 2 includes an optical fiber body 21 and a heat-conducting reflective structure 22 coated outside the optical fiber body 21, and the heat-conducting reflective structure 22 connected to the body The shape of 22 is different, the optical fiber body 21 includes a first part located in the sighting piece 11, and a second part located in the sighting piece 11, the first part and the second part are connected as one piece, the first part of the optical fiber body 21 is arranged on the periphery of the sighting piece 11, and the heat-conducting reflective structure 22 is arranged on the side of the first part adjacent to the sighting piece 11, the periphery of the second part is wrapped with the heat-conducting reflective structure 22, and the heat-conducting reflective structure 22 of the first part and the heat-conducting reflective structure 22 of the second part are connected as one piece. Optionally, the first part of the optical fiber body 21 can be distributed along the axial direction of the sighting piece 11, or can be arranged around the periphery of the sighting piece 11. In the above two cases, when the optical fiber body 21 extends along the axial direction of the sighting piece 11, the heat-conducting reflective structure 22 corresponding to the first part also extends along the axial direction of the sighting piece 11. In another case, the heat-conducting reflective structure 22 is as follows: Figure 4 In the annular shape shown, the optical fiber body 21 is disposed around the outer circumference of the reflective layer 24 of the heat-conducting reflective structure 22 .

[0033] Compared with the prior art, in the specific implementation process of this embodiment, firstly, the optical fiber body 21 can introduce various external light sources into the interior of the sighting piece 11, so that a light aiming point is formed inside the sighting piece 11, so as to provide a reference point for the observation process of low-light camera; in this process, the heat-conducting reflective structure 22 in the present invention can enhance the amount of light entering the first part of the optical fiber body 21, thereby enhancing the technical problem that the light aiming point in the sighting piece 11 is easily unable to meet the brightness requirements due to poor external lighting conditions; in addition, the heat-conducting reflective mechanism in this embodiment can also balance the internal and external temperatures of the sighting piece 11, and prevent the condensation of water vapor inside or outside the sighting piece 11 due to the temperature difference between the inside and the outside, thereby facilitating the sighting piece 11 to always maintain good imaging quality; not only that, the heat-conducting reflective structure 22 in the present invention independently arranges the two parts of the optical fiber body 21, and minimizes the overall mass of the heat-conducting reflective structure 22 and the space occupied in the sighting piece 11, so that the overall structure of the entire low-light camera device is more compact and reasonable.

[0034] In addition to the above feasible implementations, in a preferred implementation, the heat-conducting reflective structure 22 includes a heat-conducting layer 23 and a reflective layer 24. The reflective layer 24 located outside the sighting piece 11 can reflect the external light source to the first part of the optical fiber body 21, and the heat-conducting layer 23 can balance the temperature inside and outside the sighting piece 11. The reflective layer 24 can increase the amount of light entering the optical fiber body 21 and increase the brightness of the aiming point located in the sighting piece 11. At the same time, the provision of the heat-conducting layer 23 can prevent the temperature difference between the inside and outside of the sighting piece 11 from being too large, and prevent the sighting piece 11 from causing problems such as water vapor condensation inside and outside the lens due to the temperature difference between the inside and outside.

[0035] Based on the above, in a possible implementation, the material of the heat-conducting layer 23 is copper, and the material of the reflective layer 24 is silver. More specifically, the reflective layer 24 is provided on the side of the heat-conducting layer 23 adjacent to the optical fiber body 21 in the form of electroplating, and while ensuring the thermal conductivity of the heat-conducting reflective layer 24, more external light can be reflected to the optical fiber body 21 through the electroplated silver metal layer. In this embodiment, further, the reflective surface of the electroplated silver metal is diffuse reflection, and diffuse reflection can ensure that the reflected light enters the optical fiber body 21, and can also avoid the technical problem that the mirror surface is easy to dazzle under some environmental conditions.

[0036] In addition to the above feasible implementations, in order to enhance the heat balance effect of the heat conductive layer 23 on the inside and outside of the sighting piece 11, a more preferred implementation is proposed based on the above embodiments. Specifically, the heat conductive layer 23 includes a shell, a capillary layer and a coolant. The shell is made of copper or silver. In terms of cost, it is generally set to copper. The silver reflective layer 24 is provided on the shell by electroplating or chemical plating. A closed cavity for accommodating the capillary layer and the coolant is formed in the shell, and the outer wall of the shell is wrapped around the outer periphery of the reflective layer 24. The capillary layer is attached to the inner wall of the shell. The capillary layer can absorb the coolant when cooled and can volatilize the coolant when heated. In specific implementation, in order to facilitate the heat conductive layer 23 to be provided in the sighting piece 11, the outer periphery of the sighting piece 11 is provided with a mounting groove 10 for fixing the shell, and the shell is clamped in the mounting groove 10. A shell is provided at the bottom of the optical fiber of the first part, and a shell is provided at the periphery of the optical fiber body 21 of the second part, so that the point light source introduced into the sighting piece 11 by the second part of the optical fiber body 21 is more concentrated, so that the overall structure of the entire low-light camera device is more reasonable; in addition to the above-mentioned beneficial effects, in the specific implementation process of the heat-conducting layer 23 in this embodiment, when the temperature of either end of the shell is higher, the coolant soaked in the internal capillary layer thereof evaporates due to heat, turns into gas and moves to the end with a lower temperature, and this process is repeated, so that the heat-conducting layer 23 can keep the internal and external temperatures of the sighting piece 11 consistent during the phase change of the coolant, thereby solving the technical problem that the lens module of the existing low-light camera device is easily affected by the condensation of water vapor on the lens, which affects the imaging quality.

[0037] In addition to the above feasible implementation methods, in a possible implementation method, in order to prevent the first part of the optical fiber body 21 from being damaged during use, the observation component 1 also includes a protective cover 12, and the protective cover 12 is made of transparent glass or plastic. The foldable cover of the protective cover 12 is arranged in the installation groove 10, and the optical fiber body 21, the reflecting layer 24 and the outer shell are all arranged between the protective cover 12 and the installation groove 10. In this way, since the first part of the optical fiber body 21 is arranged in the outer shell, the protective cover 12 can indirectly fix the optical fiber body 21 by snapping into the outer shell, which can prevent the external impact from damaging the optical fiber body 21, and also make the assembly of the observation component 1 and the micro-light component 2 more reasonable; in addition to the above beneficial effects, in order to enhance the protective effect of the protective cover 12, the side of the protective cover 12 away from the optical fiber body 21 is protruded in the direction away from the optical fiber body 21 to enhance the structural strength of the protective cover 12. Not only that, the optimization of the shape of the protective cover 12 in this embodiment can also play a focusing role, thereby enhancing the amount of light entering the first part of the optical fiber body 21.

[0038] In a preferred embodiment, in order to increase the amount of light entering the optical fiber body 21, the mounting groove 10 is annular or spiral coaxial with the sighting piece 11, and the first portion of the optical fiber body 21 is arranged in the mounting groove 10 around the axis of the sighting piece 11. In this way, the present embodiment can increase the overall length of the first portion of the optical fiber body 21 by winding the optical fiber body 21 in the mounting groove 10, thereby increasing the amount of light entering the first portion of the optical fiber body 21.

[0039] Based on the above embodiment, preferably, the portion of the shell located outside the sighting piece 11 is U-shaped and attached to the inner wall of the mounting groove 10, and the reflective layer 24 made of silver is provided on the outer wall of the shell by electroplating or chemical plating. The first part of the optical fiber body 21 is directly wound on the reflective layer 24, and the reflective layer 24 increases the amount of light entering for all the optical fiber bodies 21 wound on itself, and the protective cover 12 mentioned above is annularly provided at the notch of the mounting groove 10 to protect the first part of the optical fiber body 21.

[0040] In addition to the above feasible implementations, in an alternative implementation, in order to facilitate the installation of the heat-conducting layer 23 and the reflective layer 24, the cross-section of the shell is in the shape of a circular arc coaxial with the optical fiber body 21, and the outer wall of the shell adjacent to the optical fiber body 21 is provided with a heat-conducting silicone rubber, and the heat-conducting silicone rubber is used to connect the shell and the reflective layer 24. In this way, the heat-conducting silicone rubber can form a stable connection between the shell and the reflective layer 24, and can make the reflective layer 24 close to the outer periphery of the optical fiber body 21 through the elastic deformation of the heat-conducting silicone rubber, so as to prevent the relative displacement between the optical fiber and the reflective layer 24 due to external vibration.

[0041] In summary, compared with the prior art, the heat-conducting reflective structure 22 of the present invention can enhance the amount of light entering the first part of the optical fiber body 21, thereby enhancing the technical problem that the light aiming point in the sighting piece 11 is easily unable to meet the brightness requirements due to poor external lighting conditions; in addition, the heat-conducting reflective mechanism of the present invention can also balance the internal and external temperatures of the sighting piece 11, and prevent the condensation of water vapor inside or outside the sighting piece 11 due to the temperature difference between the inside and the outside, thereby facilitating the sighting piece 11 to always maintain good imaging quality; not only that, the heat-conducting reflective structure 22 of the present invention independently arranges the two parts of the optical fiber body 21, and minimizes the overall mass of the heat-conducting reflective structure 22 and the space occupied in the sighting piece 11, making the overall structure of the entire low-light camera device more compact and reasonable.

[0042] In addition to the above-mentioned beneficial effects, the heat-conducting layer 23 in the present invention can utilize the phase change of the coolant in its outer shell to improve the thermal conductivity of the existing heat-conducting layer 23, so that the internal and external temperatures of the sighting and viewing component 11 can be kept consistent more quickly, and the condensation of water vapor in the sighting and viewing component 11 can be prevented; in addition, the present invention arranges the reflective layer 24 on the outer shell of the heat-conducting layer 23 by electroplating or chemical plating, and integrates the heat-conducting layer 23 and the reflective layer 24 into the same structure, so that the structure of the entire low-light camera device is more compact; at the same time, the present invention also optimizes the shape of the mounting groove 10, so that the periphery of the sighting and viewing component 11 can accommodate more optical fiber bodies 21, and can make the overall structure of the heat-conducting layer 23 simpler, without the need to arrange the shell of the heat-conducting layer 23 in a semi-wrapped manner on the periphery of the optical fiber body 21, thereby saving the processing cost of the entire low-light camera device and also helping to improve the processing efficiency of the low-light camera device.

[0043] It should be noted that the application scenario of the low-light camera device in the present invention is not limited to cameras, and it can also be used in other sighting devices such as sights.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-light camera device, characterized in that: include: The observation assembly (1) comprises a cylindrical observation member (11), wherein both axial ends of the observation member (11) are sealed by lenses; A micro-optical component (2), the micro-optical component (2) comprising an optical fiber body (21) and a heat-conducting reflective structure (22) coated outside the optical fiber body (21), the optical fiber body (21) comprising a first portion located inside the sighting piece (11), and a second portion located inside the sighting piece (11), the first portion and the second portion being integrally connected, the first portion of the optical fiber body (21) being arranged at the periphery of the sighting piece (11), and the heat-conducting reflective structure (22) being arranged on a side of the first portion adjacent to the sighting piece (11), the periphery of the second portion being coated with the heat-conducting reflective structure (22), and the heat-conducting reflective structure (22) of the first portion and the heat-conducting reflective structure (22) of the second portion being integrally connected.

2. The low-light imaging device according to claim 1, characterized in that: The heat-conducting reflective structure (22) comprises a heat-conducting layer (23) and a reflective layer (24); the reflective layer (24) located outside the sighting piece (11) can reflect external light sources to the first portion of the optical fiber body (21); and the heat-conducting layer (23) can balance the temperature inside and outside the sighting piece (11).

3. The low-light imaging device according to claim 2, characterized in that: The material of the heat-conducting layer (23) is copper, and the material of the reflective layer (24) is silver.

4. The low-light imaging device according to claim 2, characterized in that: The heat-conducting layer (23) comprises an outer shell, a capillary layer and a coolant. The outer shell is made of copper or silver. A sealed cavity for accommodating the capillary layer and the coolant is formed in the outer shell. The outer wall of the outer shell is wrapped around the outer periphery of the reflective layer (24). The capillary layer is attached to the inner wall of the outer shell. The capillary layer can absorb the coolant when cooled and can volatilize the coolant when heated.

5. The low-light imaging device according to claim 4, characterized in that: The outer periphery of the sighting piece (11) is provided with a mounting groove (10) for fixing the outer shell, and the outer shell is clamped in the mounting groove (10).

6. The low-light imaging device according to claim 5, characterized in that: The observation component (1) also includes a protective cover (12), the protective cover (12) is made of transparent glass or plastic, the foldable cover of the protective cover (12) is arranged in the installation groove (10), and the optical fiber body (21), the reflective layer (24) and the outer shell are all arranged between the protective cover (12) and the installation groove (10).

7. The low-light imaging device according to claim 5, characterized in that: The installation groove (10) is in an annular or spiral shape coaxial with the sighting piece (11), and the first part of the optical fiber body (21) is arranged in the installation groove (10) around the axis of the sighting piece (11).

8. The low-light imaging device according to claim 7, characterized in that: The cross section of the shell is in the shape of an arc coaxial with the optical fiber body (21); the outer wall of the shell adjacent to the optical fiber body (21) is provided with heat-conducting silicone rubber, and the heat-conducting silicone rubber is used to connect the shell and the reflective layer (24).

9. The low-light imaging device according to claim 3, characterized in that: The reflective layer (24) is connected to the heat conducting layer (23) by electroplating or chemical plating.

10. The low-light imaging device according to claim 6, characterized in that: The protective cover (12) is arranged to protrude away from the optical fiber body (21) on one side thereof, and in a direction away from the optical fiber body (21). The protective cover (12) can focus external light on the first part of the optical fiber body (21).

Images