Lens mechanism and sight

Abstract

The utility model is applicable to the technical field of optical instruments, and provides a lens mechanism and a sighting scope, wherein the lens mechanism comprises a main objective lens group, an eyepiece group and a switching component, wherein the switching component is movably located between the main objective lens group and the eyepiece group, and a graticule and a night vision component are arranged on the switching component. The sighting scope comprises a lens barrel, and also comprises the lens mechanism, wherein at least part of the switching component is movably arranged in the lens barrel. Compared with the sighting scope in the prior art, the graticule and the night vision component can be driven to move by switching the switching component between a first state and a second state, thereby realizing rapid switching of the lens mechanism between a white light state and a night vision state, and there is no need to recalibrate the sighting scope when replacing the sighting scope, and the cost of the sighting scope can be reduced, and the use is convenient and quick, which can avoid wasting time and delaying the fighter.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical instruments, and in particular relates to a lens mechanism and a sighting mirror. Background Art

[0002] A sight, also known as an optical aiming device, is an optical device used to help shooters aim at targets. Its principle is to use the principles of optical imaging and reflection to achieve precise aiming. White light sights are usually used during the day, and night vision sights are used at night. Shooters change different types of sights according to different environments. Replacing a sight requires recalibrating the sight's reticle and the impact point, which is complicated and tedious. At present, some sights on the market have two working modes: white light aiming and night vision aiming, to cope with daytime or nighttime use respectively, but these sights have the problem of not being able to quickly switch between white light and night vision aiming. Utility Model Content

[0003] The utility model aims to provide a lens mechanism and a sighting scope, aiming to solve the technical problem that the sighting scope in the prior art cannot realize the rapid conversion between white light and night vision aiming.

[0004] The utility model is implemented as follows: in a first aspect, a lens mechanism is provided, the lens mechanism comprising a main objective lens group, an eyepiece group and a switching component, the main objective lens group and the eyepiece group are spaced apart along a main optical axis, the switching component is movably arranged between the main objective lens group and the eyepiece group, a graticule and a night vision component are arranged on the switching component, the switching component has a first state and a second state, when the switching component is in the first state, the graticule is located on the main optical axis, and the night vision component deviates from the main optical axis, and when the switching component is in the second state, the night vision component is located on the main optical axis, and the graticule deviates from the main optical axis.

[0005] In an optional embodiment, when the switching component is in a first state, the pattern surface of the graticule coincides with the image-side focal plane of the main objective lens group; when the switching component is in a second state, the light-receiving surface of the night vision component coincides with the image-side focal plane of the main objective lens group, and the display surface of the night vision component coincides with the object-side focal plane of the eyepiece group; the lens mechanism also includes a first compensation lens, which can move between a first position corresponding to the first state and a second position corresponding to the second state; in the first position, the first compensation lens is located on the main optical axis, and the first compensation lens is located between the graticule and the eyepiece group, and the first compensation lens is used to make the object-side focal plane of the eyepiece group coincide with the image-side focal plane of the main objective lens group; in the second position, the first compensation lens deviates from the main optical axis.

[0006] In an optional embodiment, the first compensation lens is disposed on the switching component and can move with the switching component, the first compensation lens is disposed opposite to the grating plate, and the optical axis of the first compensation lens coincides with the optical axis of the grating plate.

[0007] In an optional embodiment, when the switching component is in the first state, the image-side focal plane of the main objective lens group coincides with the pattern plane of the grating plate, and the object-side focal plane of the eyepiece group also coincides with the pattern plane of the grating plate; when the switching component is in the second state, the light-receiving surface of the night vision component coincides with the image-side focal plane of the main objective lens group, and the lens mechanism includes a second compensation lens, which is capable of moving between a third position corresponding to the first state and a fourth position corresponding to the second state, and in the fourth position, the second compensation lens is located on the main optical axis, and the second compensation lens is located between the night vision component and the eyepiece group, so that when the switching component is in the fourth state, the display surface of the night vision component coincides with the object-side focal plane of the eyepiece group; in the third position, the second compensation lens deviates from the main optical axis.

[0008] In an optional embodiment, the second compensation lens is disposed on the switching component and can move with the switching component, the second compensation lens is disposed opposite to the night vision component, and the optical axis of the second compensation lens coincides with the optical axis of the night vision component.

[0009] In an optional embodiment, when the switching component is in a first state, the pattern surface of the graticule coincides with the object focal plane of the eyepiece group; when the switching component is in a second state, the light-receiving surface of the night vision component coincides with the image focal plane of the main objective lens group, and the display surface of the night vision component coincides with the object focal plane of the eyepiece group; the lens mechanism also includes a third compensation lens, and the third compensation lens can move between a fifth position corresponding to the first state and a sixth position corresponding to the second state, in which the third compensation lens is located on the main optical axis and between the graticule and the main objective lens group, and the third compensation lens is used to make the object focal plane of the eyepiece group coincide with the image focal plane of the main objective lens group; in the sixth position, the third compensation lens deviates from the main optical axis.

[0010] In an optional embodiment, the third compensation lens is disposed on the switching component and can move with the switching component, the third compensation lens is disposed opposite to the grating plate, and the optical axis of the third compensation lens coincides with the optical axis of the grating plate.

[0011] In an optional embodiment, when the switching component is in the first state, the image-side focal plane of the main objective lens group coincides with the pattern plane of the grating plate, and the object-side focal plane of the eyepiece group also coincides with the pattern plane of the grating plate; when the switching component is in the second state, the light-emitting surface of the night vision component coincides with the object-side focal plane of the eyepiece group, the lens mechanism includes a fourth compensation lens, the optical axis of the fourth compensation lens coincides with the optical axis of the night vision component, and the fourth compensation lens can move between a seventh position corresponding to the first state and an eighth position corresponding to the second state, in which the fourth compensation lens is located on the main optical axis, and the fourth compensation lens is located between the night vision component and the main objective lens group, so that when the switching component is in the eighth state, the display surface of the night vision component coincides with the image-side focal plane of the main objective lens group; in the seventh position, the fourth compensation lens deviates from the main optical axis.

[0012] In an optional embodiment, the fourth compensation lens is disposed on the switching component and can move with the switching component. The fourth compensation lens is disposed opposite to the night vision component, and the optical axis of the fourth compensation lens coincides with the optical axis of the night vision component.

[0013] In an optional embodiment, the night vision component includes an image sensor and a display, and the lens mechanism also includes a thermal imaging objective lens group and a thermal imaging movement, wherein the thermal imaging movement includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display.

[0014] In an optional embodiment, the switching component has the freedom to rotate around a rotation axis, and the rotation axis is perpendicular to and intersects with the main optical axis.

[0015] In an optional embodiment, the lens mechanism satisfies the following relationship:

[0016] d2=d1 / (1-1 / n)

[0017] Wherein, d1 represents the thickness of the grating plate, d2 represents the thickness of the night vision component, and n represents the refractive index of the grating plate.

[0018] In a second aspect, a sight is provided, comprising a lens barrel and a lens mechanism as described in any one of the above items, wherein at least part of the movement of the switching component is arranged in the lens barrel.

[0019] The first aspect of the utility model has the following technical effects compared with the prior art: a switching assembly is provided between the main objective lens group and the eyepiece group, and a graticule and a night vision assembly are provided on the switching assembly. The switching assembly is movably provided between the main objective lens group and the eyepiece group, and the switching assembly itself has a first state and a second state. When the switching assembly is in the first state, the graticule is located on the main optical axis, and the night vision assembly deviates from the main optical axis. When the switching assembly is in the second state, the night vision assembly is located on the main optical axis, and the graticule deviates from the main optical axis. Compared with the sight in the prior art, the graticule and the night vision assembly can be driven to move by switching the switching assembly between the first state and the second state, thereby realizing the rapid switching of the lens mechanism between the white light state and the night vision state, without the need to recalibrate the sight when replacing the sight, and can also reduce the cost of the sight, and is convenient and quick to use, and can avoid delaying the time and delaying the fighter.

[0020] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the lens mechanism provided by Embodiment 1 of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the lens mechanism provided in Example 2 of the present utility model. Figure 1 ;

[0024] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the lens mechanism provided in Example 2 of the present utility model. Figure 2 ;

[0026] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of the lens mechanism provided in Example 3 of the present utility model. Figure 1 ;

[0028] Figure 7This is a schematic diagram of the structure of the lens mechanism provided in Example 3 of the present utility model. Figure 2 ;

[0029] Figure 8 This is a schematic diagram of the structure of the lens mechanism provided in Example 4 of the present utility model. Figure 1 ;

[0030] Fig. 9 yes Figure 8 Schematic diagram of the enlarged structure at C in the middle;

[0031] Fig.10 This is a schematic diagram of the structure of the lens mechanism provided in Example 4 of the present utility model. Figure 2 ;

[0032] Fig.11 yes Fig.10 Schematic diagram of the enlarged structure at D in the middle;

[0033] Fig.12 This is a schematic diagram of the structure of the lens mechanism provided in Example 5 of the present utility model. Figure 1 ;

[0034] Fig.13 This is a schematic diagram of the structure of the lens mechanism provided in Example 5 of the present utility model. Figure 2 ;

[0035] Fig.14 This is a schematic diagram of the structure of the lens mechanism provided in Example 6 of the present utility model. Figure 1 ;

[0036] Fig.15 yes Fig.14 Schematic diagram of the enlarged structure at E in the middle;

[0037] Fig.16 This is a schematic diagram of the structure of the lens mechanism provided in Example 6 of the present utility model. Figure 2 ;

[0038] Fig.17 yes Fig.16 The enlarged structural diagram at F in the middle;

[0039] Fig.18 This is a schematic diagram of the structure of the lens mechanism provided in Example 7 of the present utility model. Figure 1 ;

[0040] Fig.19 This is a schematic diagram of the structure of the lens mechanism provided in Example 7 of the present utility model. Figure 2 ;

[0041] Fig. 20 This is a schematic diagram of the structure of the lens mechanism provided in Example 8 of the present utility model. Figure 1 ;

[0042] Fig.21 yes Fig. 20 Schematic diagram of the enlarged structure at G in the middle;

[0043] Fig. 22 This is a schematic diagram of the structure of the lens mechanism provided in Example 8 of the present utility model. Figure 2 ;

[0044] Fig.23 yes Fig. 22 Schematic diagram of the enlarged structure at H in the middle;

[0045] Fig.24 This is a schematic diagram of the structure of the lens mechanism provided in Example 9 of the present utility model. Figure 1 ;

[0046] Fig.25 This is a schematic diagram of the structure of the lens mechanism provided in Example 9 of the present utility model. Figure 2 ;

[0047] Fig.26 This is a schematic diagram of the local structure of the sight provided by the embodiment of the utility model Figure 1 ;

[0048] Fig. 27 yes Fig.26 Schematic diagram of the cross-sectional structure along line II;

[0049] Fig.28 This is a schematic diagram of the local structure of the sight provided by the embodiment of the utility model Figure 2 ;

[0050] Fig.29 yes Fig.28 Schematic diagram of the cross-sectional structure along the JJ line.

[0051] Description of reference numerals:

[0052] 1. Main objective lens group; 2. Eyepiece group; 3. Switching assembly; 4. Reticle; 41. Pattern surface; 5. Night vision assembly; 51. Image sensor; 52. Display; 6. First compensation lens; 7. Second compensation lens; 8. Third compensation lens; 9. Fourth compensation lens; 10. Thermal imaging objective lens group; 11. Thermal imaging movement; 12. Main optical axis; 13. Rotating axis; 14. Lens barrel; 15. Connecting shaft; 16. Avoidance structure; 17. Rotating handle; 18. Positioning member; 19. Positioning elastic member; 20. Bearing. DETAILED DESCRIPTION

[0053] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0054] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it 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 or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0058] Please refer to Figures 1 to 4As shown, in an embodiment of the utility model, in the first aspect, a lens mechanism is provided, the lens mechanism comprising a main objective lens group 1, an eyepiece group 2 and a switching assembly 3, the main objective lens group 1 and the eyepiece group 2 are spaced apart along the main optical axis 12, the switching assembly 3 is movably arranged between the main objective lens group 1 and the eyepiece group 2, a graticule 4 and a night vision assembly 5 are arranged on the switching assembly 3, the switching assembly 3 has a first state and a second state, when the switching assembly 3 is in the first state, the graticule 4 is located on the main optical axis 12, and the night vision assembly 5 deviates from the main optical axis 12, and when the switching assembly 3 is in the second state, the night vision assembly 5 is located on the main optical axis 12, and the graticule 4 deviates from the main optical axis 12.

[0059] Specifically, the main objective lens group 1 can be a single lens, and the main objective lens group 1 can also refer to a lens group composed of multiple lenses. The purpose of using these lenses in combination is to overcome the imaging defects of a single lens and improve the optical quality of the objective lens. The eyepiece group 2 can be a single lens, and the main objective lens group 1 can also refer to a lens group composed of multiple lenses. Its function is also to overcome the imaging defects of a single lens and improve the optical quality of the objective lens. The switching component 3 refers to a component with a certain volume. The switching component 3 can be plate-shaped, cylindrical, columnar, etc., and can be composed of a variety of shapes. The switching component 3 is movably arranged between the main objective lens group 1 and the eyepiece group 2. The switching component 3 can be movably connected to the lens barrel, wherein the movement of the switching component 3 can be along a straight line or can be rotated around an axis. The first state and the second state refer to two different states of the switching component 3 during the movement process, wherein the first state and the second state can be two positions spaced apart on a straight line, or two positions spaced apart on an arc, which can be selected according to the movement mode of the switching component 3, and will not be repeated here.

[0060] Graticule 4 refers to a light-transmitting component with a certain thickness, and graticule 4 can be made of high-quality glass or quartz. Its surface has been specially treated to have high transparency and hardness, as well as excellent properties such as impact resistance. Graticule 4 is engraved with various specific marks, such as gradation lines, scales or degree rings, etc., which are used for aiming and measuring external objects. Among them, the surface of graticule 4 engraved with marks is pattern surface 41. Night vision component 5 refers to a component that can enhance visual ability at night or in low-light environments. Its working principle is to capture light through a photoelectric imaging device and then convert it into an electrical signal and transmit it to the display unit. During the transmission process, the signal is processed and enhanced, and the user sees the image that was originally invisible to the naked eye through the display unit.

[0061] The lens mechanism provided by the embodiment of the utility model is provided with a switching component 3 between the main objective lens group 1 and the eyepiece group 2, and a graticule 4 and a night vision component 5 are provided on the switching component 3. The switching component 3 is movably provided between the main objective lens group 1 and the eyepiece group 2, and the switching component 3 itself has a first state and a second state. When the switching component 3 is in the first state, the graticule 4 is located on the main optical axis 12, and the night vision component 5 deviates from the main optical axis 12. When the switching component 3 is in the second state, the night vision component 5 is located on the main optical axis 12, and the graticule 4 deviates from the main optical axis 12. Compared with the sight in the prior art, the graticule 4 and the night vision component 5 can be driven to move by switching the switching component 3 between the first state and the second state, thereby realizing the rapid switching of the lens mechanism between the white light state and the night vision state, without the need to recalibrate the sight when replacing the sight, and can also reduce the cost of the sight, and is convenient and quick to use, which can avoid delaying the time and delaying the fighter.

[0062] In one embodiment, see Figures 2 to 5 When the switching assembly 3 is in the first state, the pattern surface 41 of the graticule 4 coincides with the image-side focal plane of the main objective lens group 1; when the switching assembly 3 is in the second state, the light-receiving surface of the night vision assembly 5 coincides with the image-side focal plane of the main objective lens group 1, and the display surface of the night vision assembly 5 coincides with the object-side focal plane of the eyepiece group 2; the lens mechanism also includes a first compensation lens 6, the first compensation lens 6 has a negative optical focal power, and the first compensation lens 6 can move between a first position corresponding to the first state and a second position corresponding to the second state. In the first position, the first compensation lens 6 is located on the main optical axis 12 and between the graticule 4 and the eyepiece group 2. The first compensation lens 6 is used to make the object-side focal plane of the eyepiece group 2 coincide with the image-side focal plane of the main objective lens group 1; in the second position, the first compensation lens 6 deviates from the main optical axis 12. Specifically, the first compensation lens 6 refers to an optical element made of a transparent material, the first compensation lens 6 is made according to the law of refraction, and the first compensation lens 6 is made of glass or acrylic. The focal length of the optical system can be compensated by setting the first compensation lens 6. The first position of the first compensation lens 6 refers to the position of the first compensation lens 6 when the switching component 3 is in the first state, and the second position of the first compensation lens 6 refers to the position of the first compensation lens 6 when the switching component 3 is in the second state.

[0063] At present, in the night vision state, in order to obtain clear imaging when the night vision component 5 is working, the light-receiving surface of the night vision component 5 needs to coincide with the image-side focal plane of the main objective lens group 1, and the display surface of the night vision component 5 needs to coincide with the object-side focal plane of the eyepiece group 2. However, since the night vision component 5 itself has a certain thickness, there is always a certain distance between the light-receiving surface and the display surface of the night vision component 5, which results in a distance between the image-side focal plane of the main objective lens group 1 and the object-side focal plane of the eyepiece group 2 along the optical axis. However, when the sight is switched to the white light state, the focal plane of the main objective lens group 1 and the focal plane of the eyepiece group 2 need to coincide with the pattern surface 41 of the reticle 4 to obtain a clear image. In order to make both the night vision mode and the white light mode have clear images, the current method is to use a grating plate 4 with a certain thickness, first make the pattern surface 41 of the grating plate 4 coincide with the focal plane of the main objective lens group 1, and then make the image side focal plane of the eyepiece group 2 coincide with the pattern surface 41 of the grating plate 4 through the refraction of the grating plate 4, so as to achieve the purpose of clear imaging. However, this method requires the grating plate 4 to have a large thickness. Too much thickness of the grating plate 4 will increase the weight of the product and will also cause imaging chromatic aberration to affect the image quality. In order to solve the above problems, the present embodiment adds a first compensation lens 6 in the lens mechanism. After adding the first compensation lens 6, the specific working process is as follows:

[0064] The first compensation lens 6 can be moved between a first position corresponding to the first state and a second position corresponding to the second state. Figure 2 and Figure 3 As shown, when the switching component 3 is in the second state, the first compensation lens 6 is located at the second position and deviates from the main optical axis 12, the night vision component 5 is located on the main optical axis 12, the light receiving surface of the night vision component 5 coincides with the image side focal plane of the main objective lens group 1, and the display surface of the night vision component 5 coincides with the object side focal plane of the eyepiece group 2, and the night vision state can form a clear image; Figure 4 and Figure 5 As shown, when the switching assembly 3 is in the first state, the first compensation lens 6 is in the first position and is located on the main optical axis 12, the graticule plate 4 is also located on the main optical axis 12, the pattern surface 41 of the graticule plate 4 coincides with the image-side focal plane of the main objective lens group 1, and the object-side focal plane of the eyepiece group 2 also coincides with the pattern surface 41 of the graticule plate 4 under the joint action of the compensation lens and the graticule plate 4, so that the white light mode can also achieve clear imaging while ensuring clear imaging in the night vision mode.

[0065] When the switching component 3 is in the first state, the focal length of the eyepiece group 2 can be increased by setting the first compensation lens 6, so that the entire lens mechanism can clearly image in both the white light state and the night vision state, and the thickness of the graticule 4 can be reduced to avoid imaging chromatic aberration affecting the imaging quality.

[0066] In addition, the first compensation lens 6 can be set in the switching component 3 and move together with the switching component 3. The first compensation lens 6 can also be set on other movable parts, and the other movable parts can drive the first compensation lens 6 to move to cooperate with the imaging of the graticule plate 4, so that the first compensation lens 6 is more convenient to use and more flexible.

[0067] In one embodiment, see Figure 3 and Figure 5 The first compensation lens 6 is disposed on the switching component 3 and can move with the switching component 3, and the first compensation lens 6 is disposed opposite to the reticle 4, and the optical axis of the first compensation lens 6 coincides with the optical axis of the reticle 4. Specifically, by disposing the first compensation lens 6 on the switching component 3, the first compensation lens 6 can move with the reticle 4 and the night vision component 5, which can make the sight state switching faster and the structure of the lens mechanism more concise.

[0068] In one embodiment, see Figure 3 and Figure 5 , the switching component 3 has the degree of freedom to rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. Specifically, the switching component 3 has the degree of freedom to rotate around the rotation axis 13 means that the switching component 3 can rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. At the same time, the distance between the light-receiving surface of the night vision component 5 and the rotation axis 13 is a first distance, and the distance between the pattern surface 41 of the graticule 4 and the rotation axis 13 is a second distance, and the first distance is equal to the second distance. After the position of the rotation axis 13 of the switching component 3 is determined, when the switching component 3 rotates around the rotation axis 13 to the first state, the pattern surface 41 of the graticule 4 coincides with the image-side focal plane of the main objective lens group 1. Since the first distance is equal to the second distance, when the switching component 3 rotates around the rotation axis 13 to the second state, the light-receiving surface of the night vision component 5 will also coincide with the image-side focal plane of the main objective lens group 1. The switching component 3 is installed in a rotating manner. While adjusting the positions of the night vision component 5 and the reticle 4 through its own movement, it can also save the space occupied by the switching component 3 when it moves.

[0069] In an alternative embodiment, see Figure 3 and Figure 5The first compensating lens 6 is a negative power lens, which is used to increase the focal length of the eyepiece group 2. Specifically, the focal length is a parameter in optics that describes the ability of a lens or an optical system to focus light. A negative power lens refers to a lens structure that can diverge light. The negative power lens can be a negative lens, an aspheric lens, a diffraction lens, etc. The body of the negative power lens can be made of glass, quartz, or acrylic, etc., which have high light transmittance and good optical properties. The first compensating lens 6 can be set to better increase the focal length of the eyepiece group 2, so that the sight can image more clearly with the assistance of the first compensating lens 6.

[0070] Based on the above technical features of the first compensation lens 6, please refer to Figure 6 and Figure 7 The night vision component 5 includes an image sensor 51 and a display 52, and the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​Specifically, the image sensor 51 is used to receive light and convert the light into an electrical signal and send it to the display 52, and the display 52 is used to display the image. Among them, the image sensor 51 can be a CMOS image sensor 51 or other types of detectors. The light-receiving surface of the image sensor 51 is the light-receiving surface of the entire night vision component 5, and the light-emitting surface of the display 52 is the display surface of the entire night vision component 5. The above-mentioned night vision component 5 is composed of the image sensor 51 and the display 52. ​​The image sensor 51 captures the light and converts it into an electrical signal. The electrical signal is then processed and enhanced and sent to the display 52. ​​The processed signal is displayed by the display 52, and the user sees the image that the naked eye cannot see, so as to enhance the visual ability in a low-light environment.

[0071] In addition, the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​Specifically, the thermal imaging objective lens group 10 can be a single lens, and the thermal imaging objective lens group 10 can also refer to a lens group composed of multiple lenses. Among them, the thermal imaging objective lens group 10 and the thermal imaging core 11 are arranged in sequence along a straight line parallel to the main optical axis 12. Since the detector of the thermal imaging core 11 can identify light waves with a wavelength of 8 microns to 14 microns, the lens material used to transmit light waves of this wavelength is different from that used to transmit visible light waves. Therefore, the thermal imaging core 11 and the night vision component 5 cannot share the objective lens group, and a thermal imaging objective lens group 10 needs to be set separately. The thermal imaging objective lens group 10 and the thermal imaging movement 11 are arranged in sequence along a straight line parallel to the main optical axis 12, which can ensure that when the user aims in the white light mode and the thermal imaging night vision mode, the target image information obtained by the main objective lens group 1 and the thermal imaging objective lens group 10 is consistent, thereby making the use of the lens mechanism more convenient.

[0072] The thermal imaging core 11 includes a detector and a signal processing unit. The detector is disposed at one end of the signal processing unit close to the thermal imaging objective lens group 10 and is electrically connected to the signal processing unit. The signal processing unit is electrically connected to the display 52. ​​Specifically, the detector is used to collect heat information and transmit the heat information to the signal processing unit, which is converted into digital information in the signal processing unit and sent to the display 52, and then converted into visible image information in the display 52. ​​When the switching component 3 is in the second state, the user can see the image on the display 52 through the eyepiece group 2, so that the user can aim in the thermal imaging night vision mode.

[0073] In another embodiment, see Figures 8 to 11When the switching component 3 is in the first state, the image-side focal plane of the main objective lens group 1 coincides with the pattern plane 41 of the grating plate 4, and the object-side focal plane of the eyepiece group 2 also coincides with the pattern plane 41 of the grating plate 4; when the switching component 3 is in the second state, the light-receiving surface of the night vision component 5 coincides with the image-side focal plane of the main objective lens group 1, and the lens mechanism includes a second compensation lens 7, the second compensation lens 7 has a positive optical power, and the second compensation lens 7 can move between a third position corresponding to the first state and a fourth position corresponding to the second state. In the fourth position, the second compensation lens 7 is located on the main optical axis 12 and between the night vision component 5 and the eyepiece group 2, so that when the switching component 3 is in the fourth state, the light-receiving surface of the night vision component 5 coincides with the image-side focal plane of the main objective lens group 1, and the display surface of the night vision component 5 coincides with the object-side focal plane of the eyepiece group 2; in the third position, the second compensation lens 7 deviates from the main optical axis 12. Specifically, the second compensation lens 7 refers to an optical element made of a transparent material. The second compensation lens 7 is made according to the law of refraction. The second compensation lens 7 can be made of glass, crystal, acrylic, etc. At the same time, the third position of the second compensation lens 7 refers to the position of the second compensation lens 7 when the switching component 3 is in the first state, and the fourth position of the second compensation lens 7 refers to the position of the second compensation lens 7 when the switching component 3 is in the second state.

[0074] At present, in order to obtain clear imaging in the white light state, the pattern surface 41 of the graticule 4 needs to be overlapped with the image-side focal plane of the main objective lens group 1 and the object-side focal plane of the eyepiece group 2. However, when switching to the night vision state, since the night vision component 5 itself has a certain thickness, there is a certain distance between the light-receiving surface of the night vision component 5 and the display surface. This results in that when the image-side focal plane of the main objective lens group 1 coincides with the light-receiving surface of the night vision component 5, the object-side focal plane of the eyepiece group 2 cannot coincide with the display surface of the night vision component 5, thereby affecting the clarity of the imaging. In order to solve the above-mentioned problem, the present embodiment adds a second compensation lens 7 to the lens mechanism. Specifically, the working process of the lens mechanism after adding the second compensation lens 7 is as follows:

[0075] The second compensation lens 7 can be moved between a third position corresponding to the first state and a fourth position corresponding to the second state. Figure 6 and Figure 7 As shown, when the switching assembly 3 is in the first state, the second compensation lens 7 is located at the third position and deviates from the main optical axis 12, the graticule 4 is located on the main optical axis 12, and the pattern surface 41 of the graticule 4 coincides with the image focal plane of the main objective lens group 1 and the object focal plane of the eyepiece group 2, and the sight can form a clear image in the white light state; Figure 8 and Fig. 9As shown, when the switching component 3 is in the second state, the second compensation lens 7 is in the fourth position and is located on the main optical axis 12, and the night vision component 5 is also located on the main optical axis 12. At this time, the light receiving surface of the night vision component 5 coincides with the image-side focal plane of the main objective lens group 1, and the object-side focal plane of the eyepiece group 2 also coincides with the display surface of the night vision component 5 under the action of the compensation lens, so that the sight can achieve clear imaging in the night vision mode while ensuring clear imaging in the white light mode.

[0076] When the switching component 3 is in the second state, the focal length of the eyepiece group 2 can be shortened by setting the second compensation lens 7, so that the entire lens mechanism can clearly image in both the white light state and the night vision state. At the same time, the thickness of the graticule 4 itself can be reduced to avoid imaging chromatic aberration and affect the imaging quality.

[0077] It should be noted that the second compensation lens 7 is movably arranged on the lens mechanism. The second compensation lens 7 can be arranged on the switching component 3 and move with the switching component 3. The second compensation lens 7 can also be arranged on other components, and the second compensation lens 7 is driven by other components to move to cooperate with the imaging of the night vision component 5.

[0078] In one embodiment, see Fig. 9 and Fig.11 The second compensation lens 7 is arranged on the switching assembly 3 and can move with the switching assembly 3, and the second compensation lens 7 is arranged opposite to the night vision assembly 5, and the optical axis of the second compensation lens 7 coincides with the optical axis of the night vision assembly 5. Specifically, by arranging the second compensation lens 7 on the switching assembly 3, the second compensation lens 7 can move with the reticle 4 and the night vision assembly 5, which can make the state switching of the sight faster and make the structure of the lens mechanism more concise.

[0079] In one embodiment, see Fig. 9 and Fig.11, the switching component 3 has the degree of freedom to rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. Specifically, the switching component 3 has the degree of freedom to rotate around the rotation axis 13 means that the switching component 3 can rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. At the same time, the distance between the light-receiving surface of the night vision component 5 and the rotation axis 13 is a first distance, and the distance between the pattern surface 41 of the graticule 4 and the rotation axis 13 is a second distance, and the first distance is equal to the second distance. After the position of the rotation axis 13 of the switching component 3 is determined, when the switching component 3 rotates around the rotation axis 13 to the first state, the pattern surface 41 of the graticule 4 coincides with the image-side focal plane of the main objective lens group 1. Since the first distance is equal to the second distance, when the switching component 3 rotates around the rotation axis 13 to the second state, the light-receiving surface of the night vision component 5 will also coincide with the image-side focal plane of the main objective lens group 1. The switching component 3 is installed in a rotating manner. While adjusting the position of the night vision component 5 and the reticle 4 through its own movement, it can also save the space occupied by the switching component 3 during movement, reduce the overall volume of the lens mechanism, and reduce the cost of the sight.

[0080] In an alternative embodiment, see Fig. 9 and Fig.11 , the second compensating lens 7 is a positive power lens, which is used to reduce the focal length of the eyepiece group 2. Specifically, the focal power is a parameter in optics that describes the ability of a lens or an optical system to focus light. A positive power lens refers to a lens structure that can converge light. A positive power lens can be a positive lens, an aspheric lens, a diffraction lens, etc. The body of the positive power lens can be made of glass, quartz or acrylic, etc., which have high light transmittance and good optical properties. The second compensating lens 7 can be set to better shorten the focal length of the eyepiece group 2, so that the lens mechanism can form a clearer image with the assistance of the second compensating lens 7, thereby making the use of the sight more convenient.

[0081] Based on the above technical features of the second compensation lens 7, please refer to Fig.12 and Fig.13The night vision component 5 includes an image sensor 51 and a display 52, and the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​Specifically, the image sensor 51 is used to receive light and convert the light into an electrical signal and send it to the display 52, and the display 52 is used to display the image. Among them, the image sensor 51 can be a CMOS image sensor 51 or other types of detectors. The light-receiving surface of the image sensor 51 is the light-receiving surface of the entire night vision component 5, and the light-emitting surface of the display 52 is the display surface of the entire night vision component 5. The above-mentioned night vision component 5 is composed of the image sensor 51 and the display 52. ​​The image sensor 51 captures the light and converts it into an electrical signal. The electrical signal is then processed and enhanced and sent to the display 52. ​​The processed signal is displayed by the display 52, so that the user can see the image that the naked eye cannot see, so as to enhance the visual ability at night or in low light environments.

[0082] In addition, the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​Specifically, the thermal imaging objective lens group 10 can be a single lens, and the thermal imaging objective lens group 10 can also refer to a lens group composed of multiple lenses. Among them, the thermal imaging objective lens group 10 and the thermal imaging core 11 are arranged in sequence along a straight line parallel to the main optical axis 12. Since the detector of the thermal imaging core 11 can identify light waves with a wavelength of 8 microns to 14 microns, the lens material used to transmit light waves of this wavelength is different from that used to transmit visible light waves. Therefore, the thermal imaging core 11 and the night vision component 5 cannot share the objective lens group, and a thermal imaging objective lens group 10 needs to be set separately. The thermal imaging objective lens group 10 and the thermal imaging movement 11 are arranged in sequence along a straight line parallel to the main optical axis 12, which can ensure that when the user aims in the white light mode and the thermal imaging night vision mode, the target image information obtained by the main objective lens group 1 and the thermal imaging objective lens group 10 is consistent, so that the night vision effect of the lens mechanism is better.

[0083] The thermal imaging core 11 includes a detector and a signal processing unit. The detector is disposed at one end of the signal processing unit close to the thermal imaging objective lens group 10 and is electrically connected to the signal processing unit. The signal processing unit is electrically connected to the display 52. ​​Specifically, the detector is used to collect heat information and transmit the heat information to the signal processing unit, which is converted into digital information in the signal processing unit and sent to the display 52, and then converted into visible image information in the display 52. ​​When the switching component 3 is in the second state, the user can see the image on the display 52 through the eyepiece group 2, so that the user can aim in the thermal imaging night vision mode.

[0084] In one embodiment, see Figures 14 to 17 When the switching assembly 3 is in the first state, the pattern surface 41 of the graticule 4 coincides with the object focal plane of the eyepiece group 2. When the switching assembly 3 is in the second state, the light receiving surface of the night vision assembly 5 coincides with the image focal plane of the main objective lens group 1, and the display surface of the night vision assembly 5 coincides with the object focal plane of the eyepiece group 2. The lens mechanism also includes a third compensation lens 8, which can move between a fifth position corresponding to the first state and a sixth position corresponding to the second state. In the fifth position, the third compensation lens 8 is located on the main optical axis 12, and the third compensation lens 8 is located between the graticule 4 and the main objective lens group 1. The third compensation lens 8 is used to make the object focal plane of the eyepiece group 2 coincide with the image focal plane of the main objective lens group 1. In the sixth position, the third compensation lens 8 deviates from the main optical axis 12. Specifically, the third compensation lens 8 refers to an optical element made of a transparent material. The third compensation lens 8 is made according to the law of refraction. The third compensation lens 8 is made of glass or acrylic. The focal length of the optical system can be compensated by setting the third compensation lens 8. The fifth position of the third compensation lens 8 refers to the position of the third compensation lens 8 when the switching component 3 is in the first state, and the sixth position of the third compensation lens 8 refers to the position of the third compensation lens 8 when the switching component 3 is in the second state.

[0085] At present, in the night vision state, in order to obtain clear imaging when the night vision component 5 is working, the light-receiving surface of the night vision component 5 needs to coincide with the image-side focal plane of the main objective lens group 1, and the display surface of the night vision component 5 needs to coincide with the object-side focal plane of the eyepiece group 2. However, since the night vision component 5 itself has a certain thickness, there is always a certain distance between the light-receiving surface and the display surface of the night vision component 5, which results in a distance between the image-side focal plane of the main objective lens group 1 and the object-side focal plane of the eyepiece group 2 along the main optical axis 12. However, when the sight is switched to the white light state, the focal planes of the main objective lens group 1 and the eyepiece group 2 need to coincide with the pattern surface 41 of the reticle 4 to obtain a clear image. In order to make both the night vision mode and the white light mode have clear images, the current method is to use a grating plate 4 with a certain thickness, first make the pattern surface 41 of the grating plate 4 coincide with the object focal plane of the eyepiece group 2, and then make the image focal plane of the main objective lens group 1 coincide with the pattern surface 41 of the grating plate 4 through the refraction of the grating plate 4, so as to achieve the purpose of clear imaging. However, this method requires the grating plate 4 to have a large thickness. Too much thickness of the grating plate 4 will increase the weight of the product and will also cause imaging chromatic aberration and affect the image quality. In order to solve the above problems, a third compensation lens is added to the lens mechanism. After adding the third compensation lens, the specific working process is as follows:

[0086] The third compensation lens 8 can be moved between a fifth position corresponding to the first state and a sixth position corresponding to the second state. Fig.14 and Fig.15 As shown, when the switching component 3 is in the second state, the third compensation lens is located at the sixth position and deviates from the main optical axis 12, the night vision component 5 is located on the main optical axis 12, the light receiving surface of the night vision component 5 coincides with the image side focal plane of the main objective lens group 1, and the display surface of the night vision component 5 coincides with the object side focal plane of the eyepiece group 2, and the night vision state can form a clear image; Fig.16 and Fig.17 As shown, when the switching assembly 3 is in the first state, the third compensation lens 8 is in the fifth position and is located on the main optical axis 12, the graticule plate 4 is also located on the main optical axis 12, the pattern surface 41 of the graticule plate 4 coincides with the object focal plane of the eyepiece group, and the image focal plane of the main objective lens group 1 also coincides with the pattern surface 41 of the graticule plate 4 under the joint action of the compensation lens and the graticule plate 4, so that the white light mode can also achieve clear imaging while ensuring clear imaging in the night vision mode.

[0087] When the switching component 3 is in the first state, the focal length of the main objective lens group 1 can be increased by setting the third compensation lens 8, so that the entire lens mechanism can clearly image in both the white light state and the night vision state, and the thickness of the graticule 4 can be reduced to avoid imaging chromatic aberration affecting the imaging quality.

[0088] In addition, the third compensation lens 8 can be set in the switching component 3 and move with the switching component 3. The third compensation lens 8 can also be set on other movable parts. The other movable parts drive the third compensation lens 8 to move to cooperate with the imaging of the graticule plate 4, making the third compensation lens 8 more convenient and flexible to use.

[0089] In an alternative embodiment, see Fig.15 and Fig.17 The third compensating lens 8 is a negative power lens, which is used to increase the focal length of the main objective lens group 1. Specifically, the focal power is a parameter in optics that describes the ability of a lens or an optical system to focus light. A negative power lens refers to a lens structure that can diverge light. The negative power lens can be a negative lens, an aspheric lens, a diffraction lens, etc. The body of the negative power lens can be made of glass, quartz or acrylic, etc., which have high light transmittance and good optical properties. The third compensating lens 8 can be used to better increase the focal length of the main objective lens group 1, so that the lens mechanism can image more clearly with the assistance of the third compensating lens 8, and the image of the sight can also be clearer.

[0090] In one embodiment, see Fig.15 and Fig.17The third compensation lens 8 is disposed in the switching component 3 and can move with the switching component 3. The third compensation lens 8 is disposed opposite to the reticle 4, and the optical axis of the third compensation lens 8 coincides with the optical axis of the reticle 4. Specifically, by disposing the third compensation lens 8 in the switching component 3 and disposing the third compensation lens 8 opposite to the reticle 4, the third compensation lens 8 can move with the reticle 4, so that the state switching of the sight can be faster.

[0091] In one embodiment, see Fig.15 and Fig.17 , the switching component 3 has the degree of freedom to rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. Specifically, the switching component 3 has the degree of freedom to rotate around the rotation axis 13 means that the switching component 3 can rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. At the same time, the distance between the display surface of the night vision component 5 and the rotation axis 13 is a first distance, and the distance between the pattern surface 41 of the graticule 4 and the rotation axis 13 is a second distance, and the first distance is equal to the second distance. After the position of the switching component 3 and the rotation axis 13 is determined, when the switching component 3 rotates around the rotation axis 13 to the first state, the pattern surface 41 of the graticule 4 coincides with the object focal plane of the eyepiece group 2. Since the first distance is equal to the second distance, when the switching component 3 rotates around the rotation axis 13 to the second state, the display surface of the night vision component 5 will also coincide with the object focal plane of the eyepiece group 2. In addition, the switching component 3 adopts a rotating installation method. While adjusting the positions of the night vision component 5, the third compensation lens 8 and the reticle 4 through its own rotation, it can also save the space occupied by the switching component 3 during movement, reduce the overall volume of the lens mechanism, and reduce the production cost of the sight.

[0092] Based on the above technical features of the third compensation lens 8, please refer to Fig.18 and Fig.19The night vision component 5 includes an image sensor 51 and a display 52, and the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​Specifically, the image sensor 51 is used to receive light and convert the light into an electrical signal and send it to the display 52, and the display 52 is used to display the image. Among them, the image sensor 51 can be a CMOS image sensor 51 or other types of detectors. The light-receiving surface of the image sensor 51 is the light-receiving surface of the entire night vision component 5, and the light-emitting surface of the display 52 is the display surface of the entire night vision component 5. The above-mentioned night vision component 5 is composed of the image sensor 51 and the display 52. ​​The image sensor 51 captures the light and converts it into an electrical signal. The electrical signal is then processed and enhanced and sent to the display 52. ​​The processed signal is displayed by the display 52, so that the user can see the image that the naked eye cannot see, so as to enhance the visual ability at night or in low light environments.

[0093] In addition, the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​Specifically, the thermal imaging objective lens group 10 can be a single lens, and the thermal imaging objective lens group 10 can also refer to a lens group composed of multiple lenses. Among them, the thermal imaging objective lens group 10 and the thermal imaging core 11 are arranged in sequence along a straight line parallel to the main optical axis 12. Since the detector of the thermal imaging core 11 can identify light waves with a wavelength of 8 microns to 14 microns, the lens material used to transmit light waves of this wavelength is different from that used to transmit visible light waves. Therefore, the thermal imaging core 11 and the night vision component 5 cannot share the objective lens group, and a thermal imaging objective lens group 10 needs to be set separately. The thermal imaging objective lens group 10 and the thermal imaging core 11 are arranged in sequence along a straight line parallel to the main optical axis 12, so that when the user aims in the white light mode and the thermal imaging night vision mode, the target image information obtained by the main objective lens group 1 and the thermal imaging objective lens group 10 can be consistent. The thermal imaging core 11 includes a detector and a signal processing unit. The detector is arranged at one end of the signal processing unit close to the thermal imaging objective lens group 10 and is electrically connected to the signal processing unit. The signal processing unit is electrically connected to the display 52. ​​Specifically, the detector is used to collect heat information and transmit the heat information to the signal processing unit, which is converted into digital information in the signal processing unit and sent to the display 52, and then converted into visible image information in the display 52. ​​When the switching component 3 is in the second state, the user can see the image on the display 52 through the eyepiece group 2 in the thermal imaging night vision mode.

[0094] In one embodiment, see Figure 20 to Figure 23When the switching component 3 is in the first state, the image-side focal plane of the main objective lens group 1 coincides with the pattern plane 41 of the grating plate 4, and the object-side focal plane of the eyepiece group 2 also coincides with the pattern plane 41 of the grating plate 4; when the switching component 3 is in the second state, the light-emitting surface of the night vision component 5 coincides with the object-side focal plane of the eyepiece group 2, and the lens mechanism includes a fourth compensation lens 9, the optical axis of the fourth compensation lens 9 coincides with the optical axis of the night vision component 5, and the fourth compensation lens 9 can move between a seventh position corresponding to the first state and an eighth position corresponding to the second state. In the eighth position, the fourth compensation lens 9 is located on the main optical axis 12, and the fourth compensation lens 9 is located between the night vision component 5 and the main objective lens group 1, so that when the switching component 3 is in the eighth state, the display surface of the night vision component 5 coincides with the image-side focal plane of the main objective lens group 1; in the seventh position, the fourth compensation lens 9 deviates from the main optical axis 12. Specifically, the fourth compensation lens 9 refers to an optical element made of a transparent material. The fourth compensation lens 9 is made according to the law of refraction. The fourth compensation lens 9 can be made of glass, crystal, acrylic, etc. At the same time, the seventh position of the fourth compensation lens 9 refers to the position of the fourth compensation lens 9 when the switching component 3 is in the first state, and the eighth position of the fourth compensation lens 9 refers to the position of the fourth compensation lens 9 when the switching component 3 is in the second state.

[0095] At present, in order to obtain clear imaging in the white light state, the pattern surface 41 of the graticule 4 needs to be overlapped with the image-side focal plane of the main objective lens group 1 and the object-side focal plane of the eyepiece group 2. However, when the lens mechanism is switched to the night vision state, since the night vision component 5 itself has a certain thickness, there is a certain distance between the light-receiving surface of the night vision component 5 and the display surface. This results in that when the object-side focal plane of the eyepiece group 2 coincides with the display surface of the night vision component 5, the image-side focal plane of the main objective lens group 1 cannot coincide with the light-receiving surface of the night vision component 5, thereby affecting the clarity of the imaging in the night vision state. In order to solve the above-mentioned problem, the present embodiment adds a fourth compensation lens 9 to the lens mechanism. Specifically, the working process after adding the fourth compensation lens 9 is as follows:

[0096] The fourth compensation lens 9 can be moved between a seventh position corresponding to the first state and an eighth position corresponding to the second state. Fig. 20 and Fig.21 As shown, when the switching assembly 3 is in the first state, the fourth compensation lens 9 is located at the seventh position and deviates from the main optical axis 12, the graticule 4 is located on the main optical axis 12, and the pattern surface 41 of the graticule 4 coincides with the image-side focal plane of the main objective lens group 1 and the object-side focal plane of the eyepiece group 2, and the sight can form a clear image in the white light state; Fig. 22 and Fig.23As shown, when the switching component 3 is in the second state, the fourth compensation lens 9 is in the eighth position and is located on the main optical axis 12, and the night vision component 5 is also located on the main optical axis 12. At this time, the display surface of the night vision component 5 coincides with the object focal plane of the eyepiece group 2, and the image focal plane of the main objective lens group 1 also coincides with the light receiving surface of the night vision component 5 under the action of the fourth compensation lens 9, so that the sight can achieve clear imaging in the night vision mode while ensuring clear imaging in the white light mode.

[0097] When the switching component 3 is in the second state, the fourth compensation lens 9 can shorten the focal length of the main objective lens group 1, so that the entire lens mechanism can clearly image in both the white light state and the night vision state. At the same time, the thickness of the graticule 4 itself can be reduced to avoid imaging chromatic aberration affecting the imaging quality.

[0098] It should be noted that the fourth compensation lens 9 is movably arranged on the lens mechanism. The fourth compensation lens 9 can be arranged on the switching component 3 and move with the switching component 3. The fourth compensation lens 9 can also be arranged on other components, and the fourth compensation lens 9 is driven by other components to move to cooperate with the imaging of the night vision component 5.

[0099] In one embodiment, see Fig.21 and Fig.23 The fourth compensation lens 9 is disposed in the switching assembly 3 and can move with the switching assembly 3. The fourth compensation lens 9 is disposed opposite to the night vision assembly 5, and the optical axis of the fourth compensation lens 9 coincides with the optical axis of the night vision assembly 5. Specifically, by disposing the fourth compensation lens 9 in the switching assembly 3, the fourth compensation lens 9 can move with the reticle 4 and the night vision assembly 5, which can make the state switching of the sight faster and the structure of the lens mechanism more concise.

[0100] In one embodiment, see Fig.21 and Fig.23, the switching component 3 has the degree of freedom to rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. Specifically, the switching component 3 has the degree of freedom to rotate around the rotation axis 13 means that the switching component 3 can rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects the main optical axis 12. At the same time, the distance between the display surface of the night vision component 5 and the rotation axis 13 is a first distance, and the distance between the pattern surface 41 of the graticule 4 and the rotation axis 13 is a second distance, and the first distance is equal to the second distance. After the position of the switching component 3 and the rotation axis 13 is determined, when the switching component 3 rotates around the rotation axis 13 to the first state, the pattern surface 41 of the graticule 4 coincides with the object focal plane of the eyepiece group 2. Since the first distance is equal to the second distance, when the switching component 3 rotates around the rotation axis 13 to the second state, the display surface of the night vision component 5 will also coincide with the object focal plane of the eyepiece group 2. At the same time, the switching component 3 adopts a rotating installation method. While adjusting the position of the night vision component 5 and the reticle 4 through its own movement, it can also save the space occupied by the switching component 3 during movement, reduce the overall volume of the lens mechanism, and reduce the cost of the sight.

[0101] In an alternative embodiment, see Fig.21 and Fig.23 , the fourth compensating lens 9 is a positive power lens, which is used to reduce the focal length of the main objective lens group 1. Specifically, the focal length is a parameter in optics that describes the ability of a lens or an optical system to focus light. A positive power lens refers to a lens structure that can converge light. A positive power lens can be a positive lens, an aspheric lens, a diffraction lens, etc. The body of the positive power lens can be made of glass, quartz or acrylic, etc., which have high light transmittance and good optical properties. The fourth compensating lens 9 can be set to better shorten the focal length of the main objective lens group 1, so that the image is clearer with the assistance of the fourth compensating lens 9 when the sight is in night vision mode.

[0102] Based on the above technical features of the fourth compensation lens 9, please refer to Fig.24 and Fig.25The night vision component 5 includes an image sensor 51 and a display 52, and the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​The image sensor 51 is used to receive light and convert the light into an electrical signal and send it to the display 52, and the display 52 is used to display the image. Among them, the image sensor 51 can be a CMOS image sensor 51 or other types of detectors. The light-receiving surface of the image sensor 51 is the light-receiving surface of the entire night vision component 5, and the light-emitting surface of the display 52 is the display surface of the entire night vision component 5. The above-mentioned night vision component 5 is composed of the image sensor 51 and the display 52. ​​The image sensor 51 captures the light and converts it into an electrical signal. The electrical signal is then processed and enhanced and sent to the display 52. ​​The processed signal is displayed by the display 52, so that the user can see the image that the naked eye cannot see, so as to enhance the visual ability at night or in low light environments.

[0103] In addition, the lens mechanism also includes a thermal imaging objective lens group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display 52. ​​Specifically, the thermal imaging objective lens group 10 can be a single lens, and the thermal imaging objective lens group 10 can also refer to a lens group composed of multiple lenses. Among them, the thermal imaging objective lens group 10 and the thermal imaging core 11 are arranged in sequence along a straight line parallel to the main optical axis 12. Since the detector of the thermal imaging core 11 can identify light waves with a wavelength of 8 microns to 14 microns, the lens material used to transmit light waves of this wavelength is different from that used to transmit visible light waves. Therefore, the thermal imaging core 11 and the night vision component 5 cannot share the objective lens group, and a thermal imaging objective lens group 10 needs to be set separately. The thermal imaging objective lens group 10 and the thermal imaging movement 11 are arranged in sequence along a straight line parallel to the main optical axis 12, which can ensure that when the user aims in the white light mode and the thermal imaging night vision mode, the target image information obtained by the main objective lens group 1 and the thermal imaging objective lens group 10 is consistent, making the use of the entire lens mechanism more convenient.

[0104] The thermal imaging core 11 includes a detector and a signal processing unit. The detector is disposed at one end of the signal processing unit close to the thermal imaging objective lens group 10 and is electrically connected to the signal processing unit. The signal processing unit is electrically connected to the display 52. ​​Specifically, the detector is used to collect heat information and transmit the heat information to the signal processing unit. The heat information is converted into digital information in the signal processing unit and sent to the display 52. ​​The information is then converted into visible image information in the display 52. ​​When the switching component 3 is in the second state, the user can see the image on the display 52 through the eyepiece group 2, so that the user can aim in the thermal imaging night vision mode. In one embodiment, refer to Figure 1 , the lens mechanism satisfies the following relationship:

[0105] d2=d1 / (1-1 / n)

[0106] Among them, represents the thickness of graticule 4, represents the thickness of night vision component 5, and represents the refractive index of graticule 4. Specifically, the thickness of graticule 4 refers to the thickness of graticule 4 along the main optical axis 12 when switching component 3 is in the first state. The thickness of night vision component 5 refers to the thickness of night vision component 5 along the main optical axis 12 when switching component 3 is in the second state. By making the thickness of graticule 4 and the overall thickness of night vision component 5 satisfy the above relationship, the sight can share the structure and position of main objective lens group 1 and eyepiece group 2 in the white light state and the night vision state, without changing the position and structure of main objective lens group 1 and eyepiece group 2, the purpose of clear imaging in both the white light state and the night vision state can be achieved, thereby making the use of the entire sight more convenient.

[0107] See also Figure 26 to Figure 29 In a second aspect, a sight is provided, comprising a lens barrel 14, and also comprising any of the above-mentioned lens mechanisms, wherein at least part of the switching assembly 3 is movably arranged inside the lens barrel 14. Specifically, the lens barrel 14 refers to a tubular component having a certain length, wherein the lens barrel 14 has a containing space and openings are arranged at both ends. By arranging the above-mentioned lens mechanism inside the lens barrel 14, compared with the sight in the prior art, the movement of the switching assembly 3 can drive the reticle 4 and the night vision assembly 5 to switch between the first state and the second state, thereby realizing a rapid switch between the white light state and the night vision state, without the need to replace the sight or to perform correction when switching modes, and the cost of the sight can also be reduced.

[0108] In one embodiment, see Figure 26 to Figure 29, connecting shafts 15 are respectively arranged at the two ends of the switching component 3, and the axes of the two connecting shafts 15 coincide with the rotating shaft 13, and the rotating installation of the switching component 3 can be realized by the two connecting shafts 15 being respectively connected to the lens barrel 14. The reticle 4, the night vision component 5 and the compensation lens can be respectively arranged at different positions of the switching component 3, and the switching component 3 can also be provided with a avoidance structure 16, wherein when the compensation lens is arranged relative to the reticle 4, the avoidance structure 16 is arranged relative to the night vision component 5, so that when the switching component 3 is in the second state, the light can pass through the night vision component 5 and the avoidance structure 16. When the compensation lens is arranged relative to the night vision component 5, the avoidance structure 16 is arranged relative to the reticle 4, so that when the switching component 3 is in the first state, the light can pass through the reticle 4 and the avoidance structure 16, thereby avoiding the switching component 3 from blocking the light and affecting the imaging of the sight. And the switching of the reticle 4, the night vision component 5 and the compensation lens position is realized by the rotation of the switching component 3 around the rotating shaft 13, so that the mode switching of the sight is more convenient. In addition, preferably, at least one of the two connecting shafts 15 can extend through the side wall of the lens barrel 14 to the outside of the lens barrel 14, and a rotating handle 19 can also be provided on the part of the connecting shaft 15 located outside the lens barrel, so that it is more convenient for the operator to drive the switching component 3 to rotate and to switch the state of the switching component 3.

[0109] In addition, a bearing 20 may be provided between the connecting shaft 15 and the lens barrel 14 to facilitate the rotation of the connecting shaft 15 and further facilitate the rotation of the switching assembly 3 .

[0110] In a specific embodiment, see Figure 26 to Figure 29 The switching assembly 3 can be a rotating cylinder, and both ends of the rotating cylinder are provided with connecting shafts 15, and the rotating cylinder is rotatably arranged in the lens barrel 14 through the connecting shafts 15. The axis of the rotating cylinder coincides with the rotating shaft 13, so that the rotating cylinder can rotate around the rotating shaft 13. The graticule 4, the night vision assembly 5 and the compensation lens are all arranged on the side wall of the rotating cylinder, and an avoidance hole is also arranged on the side wall of the rotating cylinder. When the compensation lens is arranged opposite to the graticule 4, the avoidance hole is arranged opposite to the night vision assembly 5. When the compensation lens is arranged opposite to the night vision assembly 5, the avoidance hole is arranged opposite to the graticule 4, which can make the overall structure of the switching assembly 3 simpler.

[0111] In an alternative embodiment, see Figure 26 to Figure 29A positioning unit for positioning the switching assembly 3 may also be provided on the lens barrel 14, and the positioning unit includes a positioning member 18 and a positioning elastic member 19. The positioning member 18 is slidably provided on the lens barrel 14, and the positioning elastic member 19 is provided between the lens barrel 14 and the positioning member 18, and is used to push the positioning member 18 toward the direction of the rotating handle 17 so that the positioning member 18 can abut against the rotating handle 17 to fix the rotating handle 17. Specifically, the positioning member 18 refers to a member with a certain volume, and the positioning member 18 can be in the shape of a block, a strip, or a column. The positioning elastic member 19 refers to an elastic member with a certain length, and the positioning elastic member 19 can be a spring, a rubber column, etc. The lens barrel 14 may be provided with sliding structures such as sliding holes and sliding grooves. At least part of the positioning member 18 is slidingly arranged in the sliding structure. The positioning elastic member 19 is also arranged in the sliding structure to apply a force toward the rotating handle 17 to the positioning member 18 so that the positioning member 18 abuts against the rotating handle 17, and the rotating handle 17 remains fixed when the rotating handle 17 is not subjected to external force, so that the connecting shaft 15 and the switching component 3 remain fixed.

[0112] Based on the above feature positioning unit, please refer to Fig.26 and Fig.28 A positioning groove for cooperating with the end of the positioning member 18 may also be provided on the rotating handle 17. The number of the positioning grooves may be two, and the positions of the two positioning grooves may correspond to the positions of the switching component 3 in the first state and the second state, respectively. For example, when the switching component 3 is in the first state, the end of the positioning member 18 may abut against the positioning groove, and when the switching component 3 is in the second state, the end of the positioning member 18 may abut against another positioning groove. When the switching component 3 needs to be rotated, the switching component 3 may cause the end of the positioning member 18 to be disengaged from the positioning groove under the action of an external force. By providing a positioning groove to cooperate with the end of the positioning member 18, the switching component 3 can be made more stable when it is in the first state or the second state.

[0113] The above description is only a preferred embodiment of the utility model, and only specifically describes the technical principle of the utility model. These descriptions are only for explaining the principle of the utility model and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation here, any modification, equivalent replacement and improvement made within the spirit and principle of the utility model, and other specific implementation methods of the utility model that can be associated with the technicians in this field without creative labor, should be included in the protection scope of the utility model.

Claims

1. A lens mechanism, characterized in that: The invention comprises a main objective lens group, an eyepiece group and a switching component, wherein the main objective lens group and the eyepiece group are spaced apart along a main optical axis, the switching component is movably arranged between the main objective lens group and the eyepiece group, a graticule and a night vision component are arranged on the switching component, and the switching component has a first state and a second state, when the switching component is in the first state, the graticule is located on the main optical axis, and the night vision component deviates from the main optical axis, and when the switching component is in the second state, the night vision component is located on the main optical axis, and the graticule deviates from the main optical axis.

2. The lens mechanism according to claim 1, characterized in that: When the switching assembly is in a first state, the pattern surface of the graticule coincides with the image-side focal plane of the main objective lens group; when the switching assembly is in a second state, the light-receiving surface of the night vision assembly coincides with the image-side focal plane of the main objective lens group, and the display surface of the night vision assembly coincides with the object-side focal plane of the eyepiece group; the lens mechanism further comprises a first compensation lens, which can move between a first position corresponding to the first state and a second position corresponding to the second state; in the first position, the first compensation lens is located on the main optical axis, and the first compensation lens is located between the graticule and the eyepiece group, and the first compensation lens is used to make the object-side focal plane of the eyepiece group coincide with the image-side focal plane of the main objective lens group; In the second position, the first compensation lens is offset from the primary optical axis.

3. The lens mechanism according to claim 2, characterized in that: The first compensation lens is disposed on the switching component and can move with the switching component. The first compensation lens is disposed opposite to the grating plate, and the optical axis of the first compensation lens coincides with the optical axis of the grating plate.

4. The lens mechanism according to claim 1, characterized in that: When the switching component is in the first state, the image-side focal plane of the main objective lens group coincides with the pattern plane of the graticule, and the object-side focal plane of the eyepiece group also coincides with the pattern plane of the graticule; when the switching component is in the second state, the light-receiving surface of the night vision component coincides with the image-side focal plane of the main objective lens group, and the lens mechanism includes a second compensation lens, which is capable of moving between a third position corresponding to the first state and a fourth position corresponding to the second state, and in the fourth position, the second compensation lens is located on the main optical axis, and the second compensation lens is located between the night vision component and the eyepiece group, so that when the switching component is in the fourth state, the display surface of the night vision component coincides with the object-side focal plane of the eyepiece group; in the third position, the second compensation lens deviates from the main optical axis.

5. The lens mechanism according to claim 4, characterized in that: The second compensation lens is arranged on the switching component and can move with the switching component. The second compensation lens is arranged opposite to the night vision component, and the optical axis of the second compensation lens coincides with the optical axis of the night vision component.

6. The lens mechanism according to claim 1, characterized in that: When the switching assembly is in a first state, the pattern surface of the graticule coincides with the object-side focal plane of the eyepiece group; when the switching assembly is in a second state, the light-receiving surface of the night vision assembly coincides with the image-side focal plane of the main objective lens group, and the display surface of the night vision assembly coincides with the object-side focal plane of the eyepiece group; the lens mechanism further comprises a third compensation lens, the third compensation lens being movable between a fifth position corresponding to the first state and a sixth position corresponding to the second state, in the fifth position, the third compensation lens is located on the principal optical axis, and the third compensation lens is located between the graticule and the main objective lens group, and the third compensation lens is used to make the object-side focal plane of the eyepiece group coincide with the image-side focal plane of the main objective lens group; In the sixth position, the third compensation lens is offset from the main optical axis.

7. The lens mechanism according to claim 6, characterized in that: The third compensation lens is arranged on the switching component and can move with the switching component. The third compensation lens is arranged opposite to the grating plate, and the optical axis of the third compensation lens coincides with the optical axis of the grating plate.

8. The lens mechanism according to claim 1, wherein: When the switching assembly is in the first state, the image-side focal plane of the main objective lens group coincides with the pattern plane of the grating plate, and the object-side focal plane of the eyepiece group also coincides with the pattern plane of the grating plate; when the switching assembly is in the second state, the light-emitting surface of the night vision assembly coincides with the object-side focal plane of the eyepiece group, the lens mechanism comprises a fourth compensation lens, the optical axis of the fourth compensation lens coincides with the optical axis of the night vision assembly, the fourth compensation lens can move between a seventh position corresponding to the first state and an eighth position corresponding to the second state, in the eighth position, the fourth compensation lens is located on the main optical axis, and the fourth compensation lens is located between the night vision assembly and the main objective lens group, so that when the switching assembly is in the eighth state, the display surface of the night vision assembly coincides with the image-side focal plane of the main objective lens group; In the seventh position, the fourth compensation lens is offset from the main optical axis.

9. The lens mechanism according to claim 8, characterized in that: The fourth compensation lens is arranged on the switching component and can move with the night vision component. The fourth compensation lens is arranged opposite to the night vision component, and the optical axis of the fourth compensation lens coincides with the optical axis of the switching component.

10. The lens mechanism according to any one of claims 2 to 9, characterized in that: The night vision component includes an image sensor and a display, and the lens mechanism also includes a thermal imaging objective lens group and a thermal imaging movement, wherein the thermal imaging movement includes a detector and a signal processing unit, the detector is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the display.

11. The lens mechanism according to any one of claims 2 to 9, characterized in that: The switching component has the freedom to rotate around a rotation axis, and the rotation axis is perpendicular to and intersects with the main optical axis.

12. The lens mechanism according to claim 1, wherein: The lens mechanism satisfies the following relationship: d2=d1 / (1-1 / n) Wherein, d1 represents the thickness of the grating plate, d2 represents the thickness of the night vision component, and n represents the refractive index of the grating plate.

13. A sighting scope, characterized in that: It comprises a lens barrel and a lens mechanism as claimed in any one of claims 1 to 12, wherein at least part of the movement of the switching component is arranged in the lens barrel.

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