Lens mechanism and sight

Abstract

The present invention is applicable to the technical field of optical instruments. Provided are a lens mechanism and a sight. The lens mechanism comprises a main objective lens group, an ocular lens group and a switching assembly, wherein the switching assembly is movably located between the main objective lens group and the ocular lens group and is provided with a reticle and a night vision assembly thereon. The sight comprises a lens barrel and further comprises the lens mechanism, wherein at least part of the switching assembly is movably arranged in the lens barrel. Compared with a sight in the prior art, the reticle and the night vision assembly can be driven to move only by means of the switching of the switching assembly between a first state and a second state, such that quick switching of the lens mechanism between a white light state and a night vision state is achieved, and there is no need to re-calibrate the sight during replacement; furthermore, the cost of the sight can be reduced, and the sight is convenient and efficient to use, such that time delays resulting in missed combat opportunities can be avoided.

Description

Lens mechanism and sighting telescope TECHNICAL FIELD

[0001] The present application belongs to the technical field of optical instruments, and particularly relates to a lens mechanism and a sighting telescope. BACKGROUND

[0002] A sighting telescope, also known as an optical sighting device, is an optical device used to help a shooter aim at a target. Its principle is to use optical imaging principle and reflection principle to achieve accurate aiming. In the daytime, a white light sighting telescope is usually used, and at night, a night vision sighting telescope is used. The shooter changes different types of sighting telescopes according to different environments. Changing the sighting telescope requires recalibration of the sighting telescope graduation line and the position of the impact point, which is complex and tedious. Some sighting telescopes on the market have two working modes of white light sighting and night vision sighting to cope with daytime or nighttime use, respectively. However, these sighting telescopes cannot realize quick conversion between white light sighting and night vision sighting. SUMMARY

[0003] The present application belongs to the technical field of optical instruments, and particularly relates to a lens mechanism and a sighting telescope.

[0004] The present application is implemented in the following manner. In a first aspect, a lens mechanism is provided. The lens mechanism includes a main objective lens group, an eyepiece group, and a switching assembly. The main objective lens group and the eyepiece group are arranged along a main optical axis. The switching assembly is movably arranged between the main objective lens group and the eyepiece group. The switching assembly is provided with a reticle and a night vision assembly. The switching assembly has a first state and a second state. When the switching assembly is in the first state, the reticle 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 reticle deviates from the main optical axis.

[0005] In an optional embodiment, when the switching assembly is in the first state, a pattern surface of the reticle coincides with an image-side focal surface of the main objective lens group. When the switching assembly is in the second state, a light-receiving surface of the night vision assembly coincides with the image-side focal surface of the main objective lens group, and a display surface of the night vision assembly coincides with an object-side focal surface of the eyepiece group. The lens mechanism further includes a first compensation lens. The first compensation lens is movable 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 reticle and the eyepiece group. The first compensation lens is used to make the object-side focal surface of the eyepiece group coincide with the image-side focal surface of the main objective lens group. In the second position, the first compensation lens deviates from the main optical axis.

[0006] In an alternative embodiment, the first compensating lens is arranged on the switching assembly and can move with the switching assembly, the first compensating lens is arranged opposite to the reticle, and the optical axis of the first compensating lens coincides with the optical axis of the reticle.

[0007] In an alternative embodiment, when the switching assembly is in the first state, the image-side focal plane of the main objective group coincides with the pattern plane of the reticle, and the object-side focal plane of the eyepiece group also coincides with the pattern plane of the reticle; when the switching assembly is in the second state, the light-receiving plane of the night vision assembly coincides with the image-side focal plane of the main objective group, the lens mechanism includes a second compensating lens, the second compensating lens 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 compensating lens is located on the main optical axis, and the second compensating lens is located between the night vision assembly and the eyepiece group, so that when the switching assembly is in the fourth state, the display plane of the night vision assembly coincides with the object-side focal plane of the eyepiece group; in the third position, the second compensating lens deviates from the main optical axis.

[0008] In an alternative embodiment, the second compensating lens is arranged on the switching assembly and can move with the switching assembly, the second compensating lens is arranged opposite to the night vision assembly, and the optical axis of the second compensating lens coincides with the optical axis of the night vision assembly.

[0009] In an alternative embodiment, when the switching assembly is in the first state, the pattern plane of the reticle coincides with the object-side focal plane of the eyepiece group, and when the switching assembly is in the second state, the light-receiving plane of the night vision assembly coincides with the image-side focal plane of the main objective group, and the display plane of the night vision assembly coincides with the object-side focal plane of the eyepiece group; the lens mechanism further includes a third compensating lens, the third compensating lens 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 compensating lens is located on the main optical axis, and the third compensating lens is located between the reticle and the main objective group, the third compensating 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 group; in the sixth position, the third compensating lens deviates from the main optical axis.

[0010] In an alternative embodiment, the third compensating lens is arranged on the switching assembly and can move with the switching assembly, the third compensating lens is arranged opposite to the reticle, and the optical axis of the third compensating lens coincides with the optical axis of the reticle.

[0011] In an optional embodiment, when the switching assembly is in the first state, the image-side focal plane of the main objective group coincides with the pattern surface of the reticle, and the object-side focal plane of the eyepiece group also coincides with the pattern surface of the reticle; when the switching assembly is in the second state, the light-outcoming 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 is movable 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 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 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 arranged in the switching assembly and movable with the switching assembly, the fourth compensation lens is arranged opposite to the night vision assembly, and the optical axis of the fourth compensation lens coincides with the optical axis of the night vision assembly.

[0013] In an optional embodiment, the night vision assembly comprises an image sensor and a display, and the lens mechanism further comprises a thermal imaging objective group and a thermal imaging core, wherein the thermal imaging core comprises 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 assembly has the freedom of rotation 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]

[0017] wherein, represents the thickness of the reticle, represents the thickness of the night vision assembly, represents the refractive index of the reticle.

[0018] In a second aspect, a scope is provided, comprising a lens barrel, and further comprising the lens mechanism according to any one of the above-mentioned embodiments, at least part of the switching assembly is movably arranged in the lens barrel.

[0019] The technical effect compared with the prior art in the first aspect of the present application is that: a switching assembly is arranged between the main objective lens group and the eyepiece group, and a reticle and a night vision assembly are arranged on the switching assembly. The switching assembly is movably arranged between the main objective lens group and the eyepiece group, and the switching assembly has a first state and a second state. When the switching assembly is in the first state, the reticle 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 reticle deviates from the main optical axis. Compared with the prior art, the switching assembly can be switched between the first state and the second state to drive the reticle and the night vision assembly to move, so that the lens mechanism can be quickly switched between the white light state and the night vision state. The sighting telescope does not need to be re-calibrated when the sighting telescope is replaced, the cost of the sighting telescope is reduced, the sighting telescope is convenient and fast to use, and the time is not wasted and the battle opportunity is not missed.

[0020] It can be understood that the beneficial effects of the second aspect described above can be referred to the related description in the first aspect described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application or the prior art description. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Fig. 1 is a structural schematic diagram of a lens mechanism provided by the embodiment 1 of the present application;

[0023] Fig. 2 is a structural schematic diagram of a lens mechanism provided by the embodiment 2 of the present application;

[0024] Fig. 3 is an enlarged structural schematic diagram of A in Fig. 2;

[0025] Fig. 4 is a structural schematic diagram of a lens mechanism provided by the embodiment 2 of the present application;

[0026] Fig. 5 is an enlarged structural schematic diagram of B in Fig. 4;

[0027] Fig. 6 is a structural schematic diagram of a lens mechanism provided by the embodiment 3 of the present application;

[0028] Fig. 7 is a structural schematic diagram of a lens mechanism provided by the embodiment 3 of the present application;

[0029] Fig. 8 is a structural schematic diagram of a lens mechanism provided by the embodiment 4 of the present application;

[0030] Fig. 9 is an enlarged structural schematic diagram of C in Fig. 8;

[0031] Figure 10 is a second structural schematic diagram of the lens mechanism provided in Embodiment 4 of the present invention;

[0032] Figure 11 is an enlarged structural diagram of point D in Figure 10;

[0033] Figure 12 is a schematic diagram of the lens mechanism provided in Embodiment 5 of the present invention;

[0034] Figure 13 is a second structural schematic diagram of the lens mechanism provided in Embodiment 5 of the present invention;

[0035] Figure 14 is a schematic diagram of the lens mechanism provided in Embodiment 6 of the present invention;

[0036] Figure 15 is an enlarged structural diagram of point E in Figure 14;

[0037] Figure 16 is a second structural schematic diagram of the lens mechanism provided in Embodiment 6 of the present invention;

[0038] Figure 17 is an enlarged structural diagram of point F in Figure 16;

[0039] Figure 18 is a schematic diagram of the lens mechanism provided in Embodiment 7 of the present invention;

[0040] Figure 19 is a second structural schematic diagram of the lens mechanism provided in Embodiment 7 of the present invention;

[0041] Figure 20 is a schematic diagram of the lens mechanism provided in Embodiment 8 of the present invention;

[0042] Figure 21 is an enlarged structural diagram of point G in Figure 20;

[0043] Figure 22 is a second structural schematic diagram of the lens mechanism provided in Embodiment 8 of the present invention;

[0044] Figure 23 is an enlarged structural diagram of point H in Figure 22;

[0045] Figure 24 is a schematic diagram of the lens mechanism provided in Embodiment 9 of the present invention;

[0046] Figure 25 is a second structural schematic diagram of the lens mechanism provided in Embodiment 9 of the present invention;

[0047] Figure 26 is a partial structural schematic diagram of the aiming scope provided in an embodiment of the present invention;

[0048] Figure 27 is a schematic cross-sectional view of the structure along line II in Figure 26;

[0049] Figure 28 is a partial structural schematic diagram of the aiming scope provided in an embodiment of the present invention;

[0050] Figure 29 is a schematic cross-sectional view of the structure along line JJ in Figure 28.

[0051] Reference Signs List:

[0052] 1, main objective 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 group; 11, thermal imaging core; 12, main optical axis; 13, rotating shaft; 14, lens barrel; 15, connecting rotating shaft; 16, avoiding structure; 17, rotating handle; 18, positioning piece; 19, positioning elastic piece; 20, bearing. DETAILED DESCRIPTION

[0053] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0054] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and examples.

[0058] Please refer to the drawings 1-4, in the embodiment of the present application, the first aspect, a lens mechanism is provided, the lens mechanism comprises a main objective group 1, an eyepiece group 2 and a switching assembly 3, the main objective group 1 and the eyepiece group 2 are arranged along the main optical axis 12, the switching assembly 3 is movably arranged between the main objective group 1 and the eyepiece group 2, the switching assembly 3 is provided with a reticle 4 and a night vision assembly 5, the switching assembly 3 has a first state and a second state, when the switching assembly 3 is in the first state, the reticle 4 is located on the main optical axis 12, 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, the reticle 4 deviates from the main optical axis 12.

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

[0060] The reticle 4 refers to a light-transmitting component with a certain thickness, and the reticle 4 can be made of high-quality glass or quartz. Its surface is specially treated and has high transparency and hardness, as well as excellent properties such as impact resistance. The reticle 4 is engraved with various specific marks, such as division lines, scales or degree rings, etc., which are used for aiming and measuring external objects, wherein the surface of the reticle 4 engraved with marks is the pattern surface 41. The night vision assembly 5 refers to an assembly that can enhance visual ability in night or low light environment, and its working principle is to capture light through a photoelectric imaging device and convert it into an electrical signal to be transmitted to a display unit. In the transmission process, the signal is processed and enhanced, and the user sees the image that cannot be seen by the naked eye through the display unit.

[0061] The lens mechanism provided by the embodiment of the present application comprises a switching assembly 3 arranged between the main objective group 1 and the ocular group 2, and a reticle 4 and a night vision assembly 5 arranged on the switching assembly 3. The switching assembly 3 is movably arranged between the main objective group 1 and the ocular group 2, and the switching assembly 3 has a first state and a second state. When the switching assembly 3 is in the first state, the reticle 4 is located on the main optical axis 12, and the night vision assembly 5 deviates from the main optical axis 12. 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 reticle 4 deviates from the main optical axis 12. Compared with the prior art, the reticle 4 and the night vision assembly 5 can be driven to move by switching the switching assembly 3 between the first state and the second state, so that the lens mechanism can be quickly switched between the white light state and the night vision state, the lens does not need to be recalibrated when the lens is replaced, the cost of the lens can be reduced, the lens is convenient and fast to use, and the time delay of the war can be avoided.

[0062] In one embodiment, referring to FIGS. 2 to 5, when the switching assembly 3 is in the first state, the pattern surface 41 of the reticle 4 coincides with the image-side focal plane of the main objective group 1, and 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 group 1, and the display surface of the night vision assembly 5 coincides with the object-side focal plane of the ocular group 2. The lens mechanism further comprises a first compensation lens 6 having a negative refractive power, 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 6 is located on the main optical axis 12 and between the reticle 4 and the ocular group 2, and is used to make the object-side focal plane of the ocular group 2 coincide with the image-side focal plane of the main objective group 1. In the second position, the first compensation lens 6 deviates from the main optical axis 12. Specifically, the first compensation lens 6 is an optical element made of transparent material, and is made according to the refraction law. The first compensation lens 6 is made of glass or acrylic material, and the focal length of the optical system can be compensated by the arrangement of 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 assembly 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 assembly 3 is in the second state.

[0063] At present, in the night vision state, in order to clearly image, the light receiving surface of the night vision assembly 5 needs to be coincided with the image side focal surface of the main objective group 1, and the display surface of the night vision assembly 5 needs to be coincided with the object side focal surface of the eyepiece group 2. However, due to the thickness of the night vision assembly 5, there is a certain distance between the light receiving surface and the display surface of the night vision assembly 5, which causes the image side focal surface of the main objective group 1 and the object side focal surface of the eyepiece group 2 to also have a distance in the direction of the optical axis. However, when the sighting telescope is switched to the white light state, the focal surface of the main objective group 1 and the focal surface of the eyepiece group 2 need to be coincided with the pattern surface 41 of the reticle 4 to clearly image. In order to clearly image in both night vision mode and white light mode, the current method is to use a reticle 4 with a certain thickness, first make the pattern surface 41 of the reticle 4 coincided with the focal surface of the main objective group 1, and then through the refraction of the reticle 4, the image side focal surface of the eyepiece group 2 is coincided with the pattern surface 41 of the reticle 4, so as to achieve the purpose of clear imaging. However, this method requires the reticle 4 to have a large thickness, and the large thickness of the reticle 4 increases the weight of the product and also causes imaging chromatic aberration to affect the image quality. In order to solve the above problems, the first compensation lens 6 is added to the lens mechanism in the embodiment, and after adding the first compensation lens 6, the specific working process is as follows:

[0064] The first compensation lens 6 can move between the first position corresponding to the first state and the second position corresponding to the second state, as shown in FIGS. 2 and 3, when the switching assembly 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 assembly 5 is located on the main optical axis 12, the light receiving surface of the night vision assembly 5 is coincided with the image side focal surface of the main objective group 1, and the display surface of the night vision assembly 5 is coincided with the object side focal surface of the eyepiece group 2, and the night vision state can clearly image; as shown in FIGS. 4 and 5, when the switching assembly 3 is in the first state, the first compensation lens 6 is located at the first position and located on the main optical axis 12, and the reticle 4 is also located on the main optical axis 12, the pattern surface 41 of the reticle 4 is coincided with the image side focal surface of the main objective group 1, and the object side focal surface of the eyepiece group 2 is also coincided with the pattern surface 41 of the reticle 4 under the joint action of the compensation lens and the reticle 4, which can clearly image in the white light mode under the premise of clear imaging in the night vision mode.

[0065] When the switching assembly 3 is in the first state, the setting of the first compensation lens 6 can increase the focal length of the eyepiece group 2, so that the entire lens mechanism can clearly image in both white light state and night vision state, and also can reduce the thickness size of the reticle 4, avoiding causing imaging chromatic aberration to affect the quality of imaging.

[0066] In addition, the first compensation lens 6 can be arranged to move with the switching assembly 3, or can be arranged on other movable components and driven to move with the switching assembly 3 to cooperate with the imaging of the reticle 4, so that the first compensation lens 6 is more convenient to use and more flexible.

[0067] In one embodiment, referring to FIGS. 3 and 5, the first compensation lens 6 is arranged on the switching assembly 3 and can move with the switching assembly 3, and the first compensation lens 6 is arranged 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 arranging the first compensation lens 6 on the switching assembly 3, the first compensation lens 6 can move with the reticle 4 and the night vision assembly 5, so that the state switching of the sighting scope is faster, and the structure of the lens mechanism is simpler.

[0068] In one embodiment, referring to FIGS. 3 and 5, the switching assembly 3 has the freedom of rotation around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects with the main optical axis 12. Specifically, the switching assembly 3 has the freedom of rotation around the rotation axis 13 means that the switching assembly 3 can rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects with the main optical axis 12. At the same time, the distance between the light receiving surface of the night vision assembly 5 and the rotation axis 13 is a first distance, and the distance between the pattern surface 41 of the reticle 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 assembly 3 is determined, when the switching assembly 3 rotates around the rotation axis 13 to the first state, the pattern surface 41 of the reticle 4 coincides with the image-side focal plane of the main objective group 1, and since the first distance is equal to the second distance, when the switching assembly 3 rotates around the rotation axis 13 to the second state, the light receiving surface of the night vision assembly 5 also coincides with the image-side focal plane of the main objective group 1. The switching assembly 3 adopts a rotating mounting mode, which can adjust the positions of the night vision assembly 5 and the reticle 4 through its own movement, and can also save the space occupied by the movement of the switching assembly 3.

[0069] In one optional embodiment, referring to FIGS. 3 and 5, the first compensation lens 6 is a negative power lens, and the negative power lens is used to increase the focal length of the ocular group 2. Specifically, the optical power is a parameter in optics to describe the focusing ability of a lens or optical system on light rays, and the negative power lens refers to a lens structure capable of diverging light rays, which can be a negative lens, an aspheric lens, a diffractive lens, etc., and the body of the negative power lens can be made of glass, quartz or acrylic, etc. with high light transmittance and good optical performance. The arrangement of the first compensation lens 6 can better increase the focal length of the ocular group 2, so that the sighting scope can image more clearly with the assistance of the first compensation lens 6.

[0070] On the basis of the first compensation lens 6 in the above technical features, referring to FIG. 6 and FIG. 7, the night vision assembly 5 includes an image sensor 51 and a display 52, and the lens mechanism further includes a thermal imaging objective 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 with the signal processing unit, and the signal processing unit is electrically connected with the display 52. Specifically, the image sensor 51 is used to receive light and convert the light into an electrical signal to send to the display 52, and the display 52 is used to display images. 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 assembly 5, and the light emitting surface of the display 52 is the display surface of the entire night vision assembly 5. Through the image sensor 51 and the display 52 to form the above-mentioned night vision assembly 5, the image sensor 51 converts the light into an electrical signal after capturing the light, and the electrical signal is sent to the display 52 after processing and enhancement processing, and the user sees the image that cannot be seen by the naked eye through the display 52. The processed signal is displayed to enhance the visual ability in low light environment.

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

[0072] The thermal imaging core 11 comprises 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 group 10 and is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with 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 is transmitted to the display 52, the digital information is converted into visual image information in the display 52, and when the switching assembly 3 is in the second state, the user can see the image on the display 52 through the ocular group 2, so that the user can aim in the thermal imaging night vision mode.

[0073] In another embodiment, referring to FIGS. 8-11, when the switching assembly 3 is in the first state, the image-side focal plane of the main objective group 1 coincides with the pattern surface 41 of the reticle 4, and the object-side focal plane of the ocular group 2 also coincides with the pattern surface 41 of the reticle 4; 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 group 1, the lens mechanism comprises a second compensation lens 7, the second compensation lens 7 has positive refractive power, 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 assembly 5 and the ocular group 2, so that when the switching assembly 3 is in the fourth state, the light-receiving surface of the night vision assembly 5 coincides with the image-side focal plane of the main objective group 1, and the display surface of the night vision assembly 5 coincides with the object-side focal plane of the ocular 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 transparent material, the second compensation lens 7 is made according to the refraction law, and the second compensation lens 7 can be made of glass, crystal or acryl. 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 assembly 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 assembly 3 is in the second state.

[0074] At present, in the white light state, in order to clearly image, the pattern surface 41 of the reticle 4 needs to coincide with the image-side focal plane of the main objective group 1 and the object-side focal plane of the ocular group 2. However, when switched to the night vision state, the night vision assembly 5 itself has a certain thickness, and there is a certain distance between the light-receiving surface and the display surface of the night vision assembly 5, which results in that when the image-side focal plane of the main objective group 1 coincides with the light-receiving surface of the night vision assembly 5, the object-side focal plane of the ocular group 2 cannot coincide with the display surface of the night vision assembly 5, thereby affecting the clarity of imaging. In order to solve the above problems, the second compensation lens 7 is added to the lens mechanism in the embodiment, and the working process of the lens mechanism after adding the second compensation lens 7 is as follows:

[0075] 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, as shown in FIGS. 6 and 7, 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 reticle 4 is located on the main optical axis 12, the pattern surface 41 of the reticle 4 coincides with the image-side focal surface of the main objective group 1 and the object-side focal surface of the ocular group 2, and the sighting telescope can clearly image in the white light state; as shown in FIGS. 8 and 9, when the switching assembly 3 is in the second state, the second compensation lens 7 is located at the fourth position and on the main optical axis 12, and the night vision assembly 5 is also located on the main optical axis 12, at this time, the light-receiving surface of the night vision assembly 5 coincides with the image-side focal surface of the main objective group 1, and the object-side focal surface of the ocular group 2 also coincides with the display surface of the night vision assembly 5 under the action of the compensation lens, so that the sighting telescope can clearly image in the night vision mode on the premise that the white light mode can clearly image.

[0076] When the switching assembly 3 is in the second state, the setting of the second compensation lens 7 can shorten the focal length of the ocular group 2, so that the entire lens mechanism can clearly image in the white light state and the night vision state, and at the same time, the thickness size of the reticle 4 itself can be reduced, avoiding causing imaging chromatic aberration and affecting the quality of imaging.

[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 assembly 3 and move with the switching assembly 3, or the second compensation lens 7 can be arranged on other components and move with the other components to cooperate with the imaging of the night vision assembly 5.

[0078] In one embodiment, referring to FIGS. 9 and 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 sighting telescope more rapid and make the structure of the lens mechanism more simple.

[0079] In one embodiment, referring to FIG. 9 and FIG. 11, the switching component 3 has the freedom of rotation around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects with the main optical axis 12. Specifically, the freedom of rotation of the switching component 3 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 with 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 reticle 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 reticle 4 coincides with the image side focal plane of the main objective group 1, and 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 also coincides with the image side focal plane of the main objective group 1. The switching component 3 adopts a rotating mounting mode, which can not only adjust the positions of the night vision component 5 and the reticle 4 through its own movement, but also save the space occupied by the movement of the switching component 3, reduce the overall volume of the lens mechanism, and reduce the cost of the sighting telescope.

[0080] In an optional embodiment, referring to FIG. 9 and FIG. 11, the second compensation lens 7 is a positive power lens, and the positive power lens is used to reduce the focal length of the ocular group 2. Specifically, the power is a parameter in optics to describe the focusing ability of a lens or optical system on light, and the positive power lens refers to a lens structure that can converge light. The positive power lens can adopt a positive lens, an aspherical lens, a diffractive lens, etc., and the body of the positive power lens can adopt glass, quartz, or acrylic, etc. materials with high light transmittance and good optical performance. Through the setting of the second compensation lens 7, the focal length of the ocular group 2 can be shortened better, the lens mechanism can image more clearly with the assistance of the second compensation lens 7, and the use of the sighting telescope is also more convenient.

[0081] On the basis of the above technical features of the second compensation lens 7, referring to Figs. 12 and 13, the night vision assembly 5 comprises an image sensor 51 and a display 52, and the lens mechanism further comprises the thermal imaging objective group 10 and the thermal imaging core 11, wherein the thermal imaging core 11 comprises a detector and a signal processing unit, the detector is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the display 52. Specifically, the image sensor 51 is used to receive light and convert the light into an electrical signal to be sent to the display 52, and the display 52 is used to display images. 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 assembly 5, and the light emitting surface of the display 52 is the display surface of the entire night vision assembly 5. The image sensor 51 and the display 52 form the above-mentioned night vision assembly 5, the image sensor 51 converts the light into an electrical signal after capturing the light, the electrical signal is sent to the display 52 after processing and enhancement, and the display 52 displays the processed signal, so that the user can see the images that cannot be seen by the naked eye, thereby enhancing the visual ability in the night or low light environment.

[0082] In addition, the lens mechanism further comprises the thermal imaging objective group 10 and the thermal imaging core 11, wherein the thermal imaging core 11 comprises a detector and a signal processing unit, the detector is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the display 52. Specifically, the thermal imaging objective group 10 can be a single lens, and the thermal imaging objective group 10 can also refer to a lens group composed of multiple lenses. The thermal imaging objective 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 recognize light waves with a wavelength of 8-14 microns, the lens material used for transmitting light waves with this wavelength is different from the lens material used for transmitting visible light, so the thermal imaging core 11 and the night vision assembly 5 cannot share the objective group, and the thermal imaging objective group 10 needs to be separately arranged. Arranging the thermal imaging objective group 10 and the thermal imaging core 11 in sequence along a straight line parallel to the main optical axis 12 can ensure that the user can aim in the white light mode and the thermal imaging night vision mode, and ensure that the target image information obtained by the main objective group 1 and the thermal imaging objective group 10 is consistent, so that the night vision effect of the lens mechanism is better.

[0083] The thermal imaging core 11 comprises 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 group 10 and is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with 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 is transmitted to the display 52, the digital information is converted into visual image information in the display 52, and when the switching assembly 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, referring to FIGS. 14-17, when the switching assembly 3 is in the first state, the pattern surface 41 of the reticle 4 coincides with the object side 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 side focal plane of the main objective 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 further comprises a third compensation lens 8, the third compensation lens 8 is 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 8 is located on the main optical axis 12, and the third compensation lens 8 is located between the reticle 4 and the main objective group 1, the third compensation lens 8 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 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 transparent material, the third compensation lens 8 is made according to the refraction law, the third compensation lens 8 is made of glass or acrylic material, and the focal length of the optical system can be compensated by 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 assembly 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 assembly 3 is in the second state.

[0085] At present, in the night vision state, in order to clearly image, the light receiving surface of the night vision assembly 5 needs to be coincided with the image side focal surface of the main objective group 1, and the display surface of the night vision assembly 5 needs to be coincided with the object side focal surface of the eyepiece group 2. However, due to the thickness of the night vision assembly 5, there is a certain distance between the light receiving surface and the display surface of the night vision assembly 5, which causes the distance between the image side focal surface of the main objective group 1 and the object side focal surface of the eyepiece group 2 in the direction of the main optical axis 12. However, when the sighting telescope is switched to the white light state, the focal surface of the main objective group 1 and the focal surface of the eyepiece group 2 need to be coincided with the pattern surface 41 of the reticle 4 to clearly image. In order to clearly image in the night vision mode and the white light mode, the current method is to use a reticle 4 with a certain thickness, first make the pattern surface 41 of the reticle 4 coincided with the object side focal surface of the eyepiece group 2, and then make the image side focal surface of the main objective group 1 coincided with the pattern surface 41 of the reticle 4 through the refraction of the reticle 4, so as to achieve the purpose of clear imaging. However, this method requires the reticle 4 to have a large thickness, and the large thickness of the reticle 4 will increase the weight of the product and cause imaging chromatic aberration affecting the image quality. In order to solve the above problems, a third compensation lens is added to the lens mechanism, and after adding the third compensation lens, the specific working process is as follows:

[0086] The third compensation lens 8 can move between the fifth position corresponding to the first state and the sixth position corresponding to the second state, as shown in FIGS. 14 and 15, when the switching assembly 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 assembly 5 is located on the main optical axis 12, the light receiving surface of the night vision assembly 5 is coincided with the image side focal surface of the main objective group 1, and the display surface of the night vision assembly 5 is coincided with the object side focal surface of the eyepiece group 2, and the night vision state can clearly image; as shown in FIGS. 16 and 17, when the switching assembly 3 is in the first state, the third compensation lens 8 is located at the fifth position and located on the main optical axis 12, and the reticle 4 is also located on the main optical axis 12, the pattern surface 41 of the reticle 4 is coincided with the object side focal surface of the eyepiece group, and the image side focal surface of the main objective group 1 is also coincided with the pattern surface 41 of the reticle 4 under the joint action of the compensation lens and the reticle 4, which can clearly image in the white light mode under the premise of clear imaging in the night vision mode.

[0087] When the switching assembly 3 is in the first state, the third compensation lens 8 can increase the focal length of the main objective group 1, so that the entire lens mechanism can clearly image in the white light state and the night vision state, and can also reduce the thickness size of the reticle 4 to avoid causing imaging chromatic aberration affecting the quality of imaging.

[0088] In addition, the third compensation lens 8 can be arranged on the switching assembly 3 and move with the switching assembly 3, or the third compensation lens 8 can be arranged on other movable components and move with the other movable components to cooperate with the imaging of the reticle 4, so that the third compensation lens 8 is more convenient and flexible to use.

[0089] In an optional embodiment, referring to FIG. 15 and FIG. 17, the third compensation lens 8 is a negative focal length lens, which is used to increase the focal length of the main objective group 1. Specifically, the focal length is a parameter in optics to describe the focusing ability of a lens or optical system, and the negative focal length lens refers to a lens structure capable of diverging light. The negative focal length lens can be a negative lens, an aspheric lens, a diffractive lens, etc., and the body of the negative focal length lens can be made of glass, quartz or acrylic, etc. with high light transmittance and good optical performance. The arrangement of the third compensation lens 8 can better increase the focal length of the main objective group 1, so that the lens mechanism can image more clearly with the assistance of the third compensation lens 8, and the imaging of the scope is also clearer.

[0090] In an embodiment, referring to FIG. 15 and FIG. 17, the third compensation lens 8 is arranged on the switching assembly 3 and can move with the switching assembly 3, the third compensation lens 8 is arranged 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 arranging the third compensation lens 8 on the switching assembly 3 and arranging 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 scope is more rapid.

[0091] In an embodiment, referring to FIG. 15 and FIG. 17, the switching assembly 3 has the freedom of rotation around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects with the main optical axis 12. Specifically, the freedom of rotation of the switching assembly 3 around the rotation axis 13 means that the switching assembly 3 can rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects with the main optical axis 12. At the same time, the distance between the display surface of the night vision assembly 5 and the rotation axis 13 is a first distance, and the distance between the pattern surface 41 of the reticle 4 and the rotation axis 13 is a second distance, and the first distance is equal to the second distance. After the positions of the switching assembly 3 and the rotation axis 13 are determined, when the switching assembly 3 rotates around the rotation axis 13 to a first state, the pattern surface 41 of the reticle 4 coincides with the object side focal surface of the eyepiece group 2, and since the first distance is equal to the second distance, when the switching assembly 3 rotates around the rotation axis 13 to a second state, the display surface of the night vision assembly 5 also coincides with the object side focal surface of the eyepiece group 2. In addition, the switching assembly 3 is installed in a rotating manner, which can adjust the positions of the night vision assembly 5, the third compensation lens 8 and the reticle 4 through the rotation of the switching assembly 3, and also can save the space occupied by the movement of the switching assembly 3, reduce the overall volume of the lens mechanism, and reduce the manufacturing cost of the scope.

[0092] On the basis of the third compensation lens 8 in the above technical features, referring to FIG. 18 and FIG. 19, the night vision assembly 5 comprises an image sensor 51 and a display 52, and the lens mechanism further comprises a thermal imaging objective group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 comprises a detector and a signal processing unit, the detector is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the display 52. Specifically, the image sensor 51 is used to receive light and convert the light into an electrical signal to send to the display 52, and the display 52 is used to display images. 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 assembly 5, and the light emitting surface of the display 52 is the display surface of the entire night vision assembly 5. Through the image sensor 51 and the display 52 to form the above-mentioned night vision assembly 5, the image sensor 51 converts the captured light into an electrical signal, and the electrical signal is sent to the display 52 after processing and enhancement processing, and the processed signal is displayed through the display 52, so that the user can see the image that cannot be seen by the naked eye, thereby enhancing the visual ability in the night or low light environment.

[0093] In addition, the lens mechanism further comprises a thermal imaging objective group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 comprises a detector and a signal processing unit, the detector is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the display 52. Specifically, the thermal imaging objective group 10 can be a single lens, and the thermal imaging objective group 10 can also refer to a lens group composed of multiple lenses. Among them, the thermal imaging objective 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 8-14 microns, the lens material used for light waves with this wavelength and visible light is different, so the thermal imaging core 11 and the night vision assembly 5 cannot share the objective group, and a separate thermal imaging objective group 10 is needed. Arranging the thermal imaging objective group 10 and the thermal imaging core 11 in sequence along a straight line parallel to the main optical axis 12 can ensure that the user can aim in the white light mode and the thermal imaging night vision mode, and ensure that the target image information obtained by the main objective group 1 and the thermal imaging objective group 10 is consistent. The thermal imaging core 11 comprises 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 group 10 and is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with 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 and sent to the display 52, and then converted into visual image information in the display 52, and when the switching assembly 3 is in the second state, the user can see the image on the display 52 in the thermal imaging night vision mode through the eyepiece group 2.

[0094] In one embodiment, referring to FIGS. 20-23, when the switching assembly 3 is in the first state, the image-side focal plane of the main objective group 1 coincides with the pattern surface 41 of the reticle 4, and the object-side focal plane of the eyepiece group 2 also coincides with the pattern surface 41 of the reticle 4; when the switching assembly 3 is in the second state, the light exit surface of the night vision assembly 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 assembly 5, the fourth compensation lens 9 is movable 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 assembly 5 and the main objective group 1, so that when the switching assembly 3 is in the eighth state, the display surface of the night vision assembly 5 coincides with the image-side focal plane of the main objective 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 transparent material, the fourth compensation lens 9 is made according to the refraction law, and the fourth compensation lens 9 can be made of glass, crystal or acryl. 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 assembly 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 assembly 3 is in the second state.

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

[0096] 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, as shown in FIGS. 20 and 21, 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, the pattern surface 41 of the graticule 4 coincides with the image-side focal plane of the main objective group 1 and the object-side focal plane of the eyepiece group 2, and the sighting scope can clearly image in the white light state; as shown in FIGS. 22 and 23, when the switching assembly 3 is in the second state, the fourth compensation lens 9 is located at the eighth position and on the main optical axis 12, and the night vision assembly 5 is also located on the main optical axis 12, at this time, the display surface of the night vision assembly 5 coincides with the object-side focal plane of the eyepiece group 2, and the image-side focal plane of the main objective group 1 also coincides with the light-receiving surface of the night vision assembly 5 under the action of the fourth compensation lens 9, so that the sighting scope can clearly image in the night vision mode on the premise that the white light mode can clearly image.

[0097] When the switching assembly 3 is in the second state, the setting of the fourth compensation lens 9 can shorten the focal length of the main objective group 1, so that the entire lens mechanism can clearly image in the white light state and the night vision state, and at the same time, the thickness size of the graticule 4 itself can be reduced, avoiding the influence of imaging chromatic aberration on 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 to move with the switching assembly 3, or the fourth compensation lens 9 can be arranged on other components and driven to move by other components to cooperate with the imaging of the night vision assembly 5.

[0099] In one embodiment, referring to FIGS. 21 and 23, the fourth compensation lens 9 is arranged on the switching assembly 3 and can move with the switching assembly 3, the fourth compensation lens 9 is arranged 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 arranging the fourth compensation lens 9 on the switching assembly 3, the fourth compensation lens 9 can move with the graticule 4 and the night vision assembly 5, which can make the state switching of the sighting scope more rapid and make the structure of the lens mechanism more simple.

[0100] In one embodiment, referring to FIG. 21 and FIG. 23, the switching assembly 3 has the freedom of rotation around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects with the main optical axis 12. Specifically, the freedom of rotation of the switching assembly 3 around the rotation axis 13 means that the switching assembly 3 can rotate around the rotation axis 13, and the rotation axis 13 is perpendicular to and intersects with the main optical axis 12. At the same time, the distance between the display surface of the night vision assembly 5 and the rotation axis 13 is a first distance, and the distance between the pattern surface 41 of the reticle 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 assembly 3 and the rotation axis 13 is determined, when the switching assembly 3 rotates around the rotation axis 13 to the first state, the pattern surface 41 of the reticle 4 coincides with the object side focal plane of the objective lens group 2, and since the first distance is equal to the second distance, when the switching assembly 3 rotates around the rotation axis 13 to the second state, the display surface of the night vision assembly 5 also coincides with the object side focal plane of the objective lens group 2. At the same time, the switching assembly 3 adopts a rotating mounting mode, which can not only adjust the positions of the night vision assembly 5 and the reticle 4 through its own movement, but also save the space occupied by the movement of the switching assembly 3, reduce the overall volume of the lens mechanism, and reduce the cost of the sighting telescope.

[0101] In an optional embodiment, referring to FIG. 21 and FIG. 23, the fourth compensation lens 9 is a positive power lens, and the positive power lens is used to reduce the focal length of the main objective lens group 1. Specifically, the power is a parameter in optics to describe the focusing ability of a lens or optical system on light, and the positive power lens refers to a lens structure that can converge light. The positive power lens can adopt a positive lens, an aspherical lens, a diffractive lens, etc., and the body of the positive power lens can adopt glass, quartz, or acrylic, etc. materials with high light transmittance and good optical performance. Through the setting of the fourth compensation lens 9, the focal length of the main objective lens group 1 can be shortened better, and the imaging of the sighting telescope in the night vision mode under the assistance of the fourth compensation lens 9 is clearer.

[0102] On the basis of the fourth compensation lens 9 in the above technical features, referring to FIG. 24 and FIG. 25, the night vision assembly 5 comprises an image sensor 51 and a display 52, and the lens mechanism further comprises a thermal imaging objective group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 comprises a detector and a signal processing unit, the detector is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the display 52. The image sensor 51 is used for receiving light and converting the light into an electrical signal to send to the display 52, and the display 52 is used for displaying images. 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 assembly 5, and the light emitting surface of the display 52 is the display surface of the entire night vision assembly 5. The image sensor 51 and the display 52 form the above-mentioned night vision assembly 5, the image sensor 51 converts the light into an electrical signal after capturing the light, the electrical signal is sent to the display 52 after processing and enhancement processing, and the display 52 displays the processed signal, so that the user can see the images that cannot be seen by the naked eye, thereby enhancing the visual ability in the night or low light environment.

[0103] In addition, the lens mechanism further comprises a thermal imaging objective group 10 and a thermal imaging core 11, wherein the thermal imaging core 11 comprises a detector and a signal processing unit, the detector is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the display 52. Specifically, the thermal imaging objective group 10 can be a single lens, and the thermal imaging objective group 10 can also refer to a lens group composed of multiple lenses. The thermal imaging objective 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 recognize light waves with a wavelength of 8 microns to 14 microns, the lens material used for transmitting light waves with this wavelength is different from the lens material used for transmitting visible light, so the thermal imaging core 11 and the night vision assembly 5 cannot share the objective group, and the thermal imaging objective group 10 needs to be separately arranged. Arranging the thermal imaging objective group 10 and the thermal imaging core 11 in sequence along a straight line parallel to the main optical axis 12 can ensure that the user can aim in the white light mode and the thermal imaging night vision mode, and ensure that the target image information obtained by the main objective group 1 and the thermal imaging objective group 10 is consistent, so that the use of the entire lens mechanism is more convenient.

[0104] The thermal imaging core 11 comprises 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 group 10 and is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with 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 is sent to the display 52, the digital information is converted into visual image information in the display 52, and when the switching assembly 3 is in the second state, the user can see the image on the display 52 through the ocular group 2, so that the user can aim in the thermal imaging night vision mode. In one embodiment, please refer to FIG. 1, the lens mechanism satisfies the following relationship:

[0105]

[0106] Wherein, the thickness of the reticle 4, the thickness of the night vision assembly 5, and the refractive index of the reticle 4. Specifically, the thickness of the reticle 4 refers to the thickness of the reticle 4 in the direction of the main optical axis 12 when the switching assembly 3 is in the first state. The thickness of the night vision assembly 5 refers to the thickness of the night vision assembly 5 in the direction of the main optical axis 12 when the switching assembly 3 is in the second state. By making the thickness of the reticle 4 and the overall thickness of the night vision assembly 5 satisfy the above relationship, the scope of the present application can achieve the purpose of clear imaging in both white light state and night vision state without changing the position and structure of the main objective group 1 and the ocular group 2, thereby making the use of the entire scope more convenient.

[0107] Please refer to FIGS. 26-29, in the second aspect, a scope is provided, comprising a lens barrel 14, and further comprising any of the above lens mechanisms, at least part of the switching assembly 3 is movably arranged in the interior of the lens barrel 14. Specifically, the lens barrel 14 refers to a cylindrical component with a certain length, the lens barrel 14 has a containing space in the interior and is provided with openings at both ends. By arranging the above lens mechanism in the lens barrel 14, compared with the prior art scope, 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, realizing the rapid switching of the white light state and the night vision state, without the need to replace the scope and without the need to calibrate when switching modes, and also reducing the cost of the scope.

[0108] In one embodiment, referring to FIGS. 26-29, the two ends of the switching assembly 3 are respectively provided with connecting shafts 15, the axes of the two connecting shafts 15 are coincident with the rotation axis 13, and the rotation mounting of the switching assembly 3 can be realized by the rotation connection of the two connecting shafts 15 with the lens barrel 14. The reticle 4, the night vision assembly 5, and the compensation lens can be respectively arranged at different positions of the switching assembly 3, and the switching assembly 3 can be further provided with a relief structure 16. When the compensation lens is arranged opposite to the reticle 4, the relief structure 16 is arranged opposite to the night vision assembly 5, so that the light can pass through the night vision assembly 5 and the relief structure 16 when the switching assembly 3 is in the second state. When the compensation lens is arranged opposite to the night vision assembly 5, the relief structure 16 is arranged opposite to the reticle 4, so that the light can pass through the reticle 4 and the relief structure 16 when the switching assembly 3 is in the first state, thereby avoiding the switching assembly 3 from blocking the light and affecting the imaging of the scope. The switching of the positions of the reticle 4, the night vision assembly 5, and the compensation lens can be realized by the rotation of the switching assembly 3 around the rotation axis 13, thereby making the mode switching of the scope more convenient. In addition, as a preferred embodiment, 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 rotation handle 19 can be further arranged on the part of the connecting shaft 15 outside the lens barrel 14, so that the operator can drive the switching assembly 3 to rotate more conveniently, and the state switching of the switching assembly 3 is more convenient.

[0109] In addition, a bearing 20 can be further arranged between the connecting shaft 15 and the lens barrel 14, so that the rotation of the connecting shaft 15 is more convenient, and the rotation of the switching assembly 3 is more convenient and smooth.

[0110] In one specific embodiment, referring to FIGS. 26-29, the switching assembly 3 can be a rotating cylinder, the two ends of the rotating cylinder are respectively provided with connecting shafts 15, and the rotating cylinder is arranged in the lens barrel 14 by the connecting shafts 15. The axis of the rotating cylinder is coincident with the rotation axis 13, so that the rotating cylinder can rotate around the rotation axis 13. The reticle 4, the night vision assembly 5, and the compensation lens are arranged on the side wall of the rotating cylinder, and a relief hole is further arranged on the side wall of the rotating cylinder. When the compensation lens is arranged opposite to the reticle 4, the relief hole is arranged opposite to the night vision assembly 5. When the compensation lens is arranged opposite to the night vision assembly 5, the relief hole is arranged opposite to the reticle 4, so that the overall structure of the switching assembly 3 is simpler.

[0111] In an alternative embodiment, referring to Figs. 26-29, a positioning unit for positioning the switching assembly 3 can also be provided on the lens barrel 14, which includes a positioning member 18 and a positioning elastic member 19. The positioning member 18 is slidingly arranged on the lens barrel 14, and the positioning elastic member 19 is arranged between the lens barrel 14 and the positioning member 18 for pushing the positioning member 18 towards 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 component with a certain volume, which can be block-shaped, strip-shaped or column-shaped. The positioning elastic member 19 refers to an elastic component with a certain length, which can be a spring, a rubber column or the like. A sliding structure such as a sliding hole or a sliding groove can be provided on the lens barrel 14, and at least part of the positioning member 18 is slidingly arranged in the sliding structure, and the positioning elastic member 19 is also arranged in the sliding structure for applying a force towards the rotating handle 17 to the positioning member 18 so that the positioning member 18 abuts against the rotating handle 17 to fix the rotating handle 17 and keep the connecting shaft 15 and the switching assembly 3 fixed when the rotating handle 17 is not subjected to an external force.

[0112] On the basis of the above-mentioned feature positioning unit, referring to Figs. 26 and 28, a positioning groove for cooperating with the end of the positioning member 18 can also be provided on the rotating handle 17, and the number of the positioning grooves can be two, and the positions of the two positioning grooves can correspond to the positions of the switching assembly 3 in the first state and the second state, respectively. For example, when the switching assembly 3 is in the first state, the end of the positioning member 18 can abut into the positioning groove, and when the switching assembly 3 is in the second state, the end of the positioning member 18 can abut into the other positioning groove, and when the switching assembly 3 needs to be rotated, the switching assembly 3 can make the end of the positioning member 18 out of the positioning groove under the action of an external force. By providing the positioning groove to cooperate with the end of the positioning member 18, the switching assembly 3 can be more stable in the first state or the second state.

[0113] The above only describes the preferred embodiments of the present application, and only specifically describes the technical principles of the present application, which are only for explaining the principles of the present application and cannot be explained as limitations on the protection scope of the present application in any way. Based on the explanations herein, any modifications, equivalent replacements and improvements made within the spirit and principles of the present application, and other specific embodiments of the present application that can be conceived by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A lens mechanism characterized by comprising: The lens mechanism comprises a main objective group, an eyepiece group and a switching assembly, the main objective group and the eyepiece group are arranged along a main optical axis, the switching assembly is movably arranged between the main objective group and the eyepiece group, a reticle and a night vision assembly are arranged on the switching assembly, the switching assembly has a first state and a second state, when the switching assembly is in the first state, the reticle is located on the main optical axis, the night vision assembly deviates from the main optical axis, and when the switching assembly is in the second state, the night vision assembly is located on the main optical axis, the reticle deviates from the main optical axis.

2. The lens mechanism according to Claim 1, wherein When the switching assembly is in the first state, a pattern surface of the reticle coincides with an image-side focal surface of the main objective group, when the switching assembly is in the second state, a light-receiving surface of the night vision assembly coincides with the image-side focal surface of the main objective group, and a display surface of the night vision assembly coincides with an object-side focal surface of the eyepiece group; the lens mechanism further comprises a first compensation lens, the first compensation lens is movable 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 reticle and the eyepiece group, the first compensation lens is used for making the object-side focal surface of the eyepiece group coincide with the image-side focal surface of the main objective group; In the second position, the first compensation lens deviates from the main optical axis.

3. The lens mechanism according to Claim 2, wherein The first compensation lens is arranged on the switching assembly and can move with the switching assembly, the first compensation lens is arranged opposite to the reticle, and an optical axis of the first compensation lens coincides with an optical axis of the reticle.

4. The lens mechanism according to Claim 1, wherein When the switching assembly is in the first state, the image-side focal surface of the main objective group coincides with the pattern surface of the reticle, and the object-side focal surface of the eyepiece group also coincides with the pattern surface of the reticle; when the switching assembly is in the second state, the light-receiving surface of the night vision assembly coincides with the image-side focal surface of the main objective group, the lens mechanism comprises a second compensation lens, the second compensation lens is movable 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 is located on the main optical axis, and the second compensation lens is located between the night vision assembly and the eyepiece group, so that when the switching assembly is in the fourth state, the display surface of the night vision assembly coincides with the object-side focal surface 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, wherein The second compensation lens is arranged on the switching assembly and can move with the switching assembly, the second compensation lens is arranged opposite to the night vision assembly, and an optical axis of the second compensation lens coincides with an optical axis of the night vision assembly.

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

7. The lens mechanism according to Claim 6, wherein The third compensation lens is arranged in the switching assembly and can move with the switching assembly, the third compensation lens is arranged opposite to the reticle, and the optical axis of the third compensation lens coincides with the optical axis of the reticle.

8. The lens mechanism according to Claim 1, wherein When the switching assembly is in the first state, the image-side focal surface of the main objective group coincides with the pattern surface of the reticle, and the object-side focal surface of the eyepiece group also coincides with the pattern surface of the reticle; when the switching assembly is in the second state, the light-emitting surface of the night vision assembly coincides with the object-side focal surface of the eyepiece group, and 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 is movable between a seventh position corresponding to the first state and an eighth position corresponding to the second state, and in the eighth position, the fourth compensation lens is located on the main optical axis and between the night vision assembly and the main objective 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 surface of the main objective group; In the seventh position, the fourth compensation lens deviates from the main optical axis.

9. The lens mechanism according to Claim 8, wherein The fourth compensation lens is arranged in the switching assembly and can move with the night vision assembly, the fourth compensation lens is arranged opposite to the night vision assembly, and the optical axis of the fourth compensation lens coincides with the optical axis of the switching assembly.

10. The lens mechanism according to any one of claims 2 to 9, characterized in that, The night vision assembly comprises an image sensor and a display, and the lens mechanism further comprises a thermal imaging objective group and a thermal imaging core, wherein the thermal imaging core comprises a detector and a signal processing unit, the detector is electrically connected with the signal processing unit, and the signal processing unit is electrically connected with the display.

11. The lens mechanism according to any one of claims 2 to 9, characterized in that, The switching assembly has the freedom of rotation around a rotation axis, 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: ； wherein denotes the thickness of the reticle, denotes a thickness of the night vision assembly, The refractive index of the reticle is represented by n.

13. A riflescope, comprising: The lens mechanism comprises a lens barrel, and further comprises the lens mechanism according to any one of claims 1 to 12, and at least part of the switching assembly is movably arranged in the lens barrel.

Images