High-precision impact-resistant side focusing lens and sighting telescope

Abstract

This utility model relates to the field of optical focusing technology, and particularly to a high-precision, shock-resistant side-focusing lens and scope. The high-precision, shock-resistant side-focusing lens includes an objective lens mechanism, a side-focusing mechanism, and a focusing drive mechanism and a focusing transmission mechanism that are connected in a transmission relationship. The focusing drive mechanism is connected to the side-focusing mechanism. The focusing transmission mechanism includes a focusing worm gear and a self-lubricating component. The focusing worm gear is sleeved around the objective lens mechanism. A guide groove is provided radially on the objective lens mechanism, and the self-lubricating component is fixed within the guide groove and protrudes from the objective lens mechanism. The side-focusing mechanism is designed to be completely exposed to the outside of the visible light rear sight, allowing for rapid single-handed rotation during focusing operations. It can be applied to high-performance scopes with small F-numbers, and can withstand over 10,000 impacts of 1000G while maintaining stable performance and consistently clear, un-focused images.

Description

Technical Field

[0001] This utility model relates to the field of optical focusing technology, and in particular to a high-precision shock-resistant side-focusing lens and sight. Background Technology

[0002] In modern firearms use and related training and recording scenarios, the Visible Light Rear Sight 1 (VLS1) has emerged to record shooting footage. The VLS1 is typically mounted on the eyepiece of a firearm sight. The common installation method involves using an adapter sleeve to accurately align the eyepiece with the objective lens of the VLS1, allowing it to receive the image from the firearm sight. To ensure a clear view of the firearm sight, the objective lens needs to be focused.

[0003] However, existing visible light rear-mounted sights have some technical problems that urgently need to be solved. On the one hand, due to the limitations of the adapter sleeve, existing visible light rear-mounted sights partially integrate the objective lens focusing mechanism into the bottom of the device, exposing only half a turn of the helical drive focusing handwheel. This design makes it extremely difficult for operators to perform focusing operations, making it difficult to complete the focusing action accurately and conveniently, seriously affecting the user experience and operational efficiency of the product.

[0004] On the other hand, in terms of optical performance, existing visible light rear-mounted lenses have an F-number of 4 or higher. For these products, to ensure clear and focused imaging during impact, it is only necessary to ensure that the distance of the objective lens relative to the imaging mechanism (i.e., the focusing clearance) is less than 0.04mm. This is relatively easy to manufacture and implement. However, with technological advancements, newly designed high-performance objectives have an F-number of 2. To achieve clear imaging without blurring during impact, the axial clearance of the threaded drive must be less than 0.02mm. Such a small clearance makes manufacturing extremely difficult, significantly increasing production costs and the manufacturing cycle. Furthermore, the threaded drive will wear down after prolonged use, which may lead to an increase in the clearance, resulting in blurring and ultimately rendering the equipment unusable, severely impacting product reliability and lifespan.

[0005] In summary, the existing visible light rear-mounted sight has significant shortcomings in terms of ease of focusing and stability of optical performance, and a new technical solution is urgently needed to solve these problems. Utility Model Content

[0006] In order to solve the above-mentioned technical problems in the prior art, this utility model provides a high-precision shock-resistant side-focusing lens and aiming scope.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] The first aspect of this utility model is to provide a high-precision, shock-resistant, side-focusing lens, including an objective lens mechanism, a side-focusing mechanism, and a focusing drive mechanism and a focusing transmission mechanism that are connected in a transmission manner. The focusing drive mechanism is connected to the side-focusing mechanism. The focusing transmission mechanism includes a focusing worm gear and a self-lubricating element. The focusing worm gear is sleeved on the circumference of the objective lens mechanism. The objective lens mechanism is provided with a guide groove along the radial direction. The self-lubricating element is fixed in the guide groove and protrudes from the objective lens mechanism.

[0009] The high-precision, shock-resistant, side-focusing lens provided by this invention utilizes a self-lubricating component with self-lubricating properties between the focusing worm gear and the objective lens mechanism. This ensures a smooth transition between the two, reducing or even eliminating axial movement between the objective lens and the focusing worm gear. This guarantees that the axial movement gap is less than 0.02mm, and the self-lubricating component has good elasticity, eliminating axial movement gaps caused by impact vibrations and reducing wear caused by transmission. This ensures that the visible light rear-mounted image remains clear and in focus, while also extending its service life. Furthermore, the side-focusing mechanism is completely exposed outside the visible light rear-mounted lens, allowing for rapid, single-handed rotation during focusing.

[0010] Based on the above technical solution, the present invention can also be improved in the following ways:

[0011] Furthermore, the inner wall of the focusing worm gear is provided with an inner spiral groove, and the self-lubricating component is transitionally fitted with the inner spiral groove.

[0012] The beneficial effect of adopting the above-mentioned further technical solution is that, by setting the inner spiral groove of the focusing worm wheel, the rotational motion of the focusing worm wheel is transformed into the linear motion of the objective lens mechanism during the focusing transmission process, thereby achieving the focusing effect.

[0013] Furthermore, the focusing drive mechanism includes a helical gear pair, which is detachably connected to the side focusing mechanism.

[0014] Furthermore, the transmission ratio between the helical gear pair and the focusing worm gear is 1:(20-40).

[0015] The beneficial effects of adopting the above-mentioned further technical solution are as follows: due to the transitional fit design, the resistance of focusing increases, which in turn requires an increase in the focusing driving force. By setting a helical gear pair and reasonably designing the transmission ratio between the helical gear pair and the focusing worm gear, the driving force generated by the side focusing mechanism can be increased, which can effectively overcome the large friction caused by the transitional fit between the focusing worm gear and the self-lubricating component, and achieve smooth focusing operation.

[0016] Furthermore, the self-lubricating component is provided in two sets, and the two sets of self-lubricating components are arranged alternately or symmetrically in the circumference of the objective lens mechanism; the self-lubricating component is fixed in the guide groove by the focusing guide pin, and the self-lubricating component is a self-lubricating sleeve, which is sleeved on the focusing guide pin.

[0017] Furthermore, the wall thickness of the self-lubricating sleeve is 0.6-0.8 mm.

[0018] The beneficial effects of adopting the above-mentioned further technical solutions are: ensuring the elasticity of the self-lubricating sleeve, which can both eliminate the axial movement gap caused by impact vibration and reduce wear.

[0019] Furthermore, the objective lens mechanism includes an objective lens and an objective lens flange seat. The objective lens flange seat includes a guide shaft with a cavity inside. The objective lens is located inside the cavity, and the guide shaft and the objective lens have corresponding guide grooves.

[0020] Furthermore, the focusing drive mechanism is detachably connected to the objective lens flange.

[0021] Furthermore, the focusing transmission mechanism also includes a worm gear anti-detachment ring, wherein the focusing worm gear and the worm gear anti-detachment ring are both sleeved on the guide shaft, and the worm gear anti-detachment ring is located outside the focusing worm gear.

[0022] The beneficial effects of adopting the above-mentioned further technical solution are as follows: setting a worm gear anti-detachment ring is used to limit and prevent the focusing worm gear from detaching. In addition, the axial movement along the guide shaft generated by the worm gear during rotation is eliminated by the tight cooperation between the anti-detachment ring and the focusing worm gear. That is, the gap other than the cooperation gap between the self-lubricating sleeve and the inner spiral groove of the focusing worm gear is eliminated, ensuring that the focusing worm gear does not move axially along the objective lens during the impact process, thus ensuring clear imaging without blurring.

[0023] Another aspect of this utility model is to provide a sight, including an eyepiece assembly, an adapter sleeve, and the aforementioned high-precision shock-resistant side-focusing lens, wherein the high-precision shock-resistant side-focusing lens is connected to the eyepiece assembly via the adapter sleeve.

[0024] Compared with the prior art, the present invention has the following technical effects:

[0025] This invention provides a high-precision, shock-resistant, side-focusing lens. By incorporating a self-lubricating component with self-lubricating properties between the focusing worm gear and the objective lens mechanism, a transitional fit is achieved between the two, ensuring that the axial clearance of the transmission is less than 0.02mm. The self-lubricating component also possesses excellent elasticity, eliminating axial clearance caused by impact vibrations and reducing wear caused by the transmission. This ensures consistently clear and focused images for the visible light rear sight, while also extending its service life. Furthermore, the side-focusing mechanism is completely exposed outside the visible light rear sight, allowing for rapid, one-handed rotation during focusing. This high-precision, shock-resistant, side-focusing lens can be applied to high-performance sights with small F-numbers. It can withstand over 10,000 impacts of 1000G while maintaining stable performance and consistently clear, focused images. The side-focusing operation is very convenient, and the coupling between the helical gear pair and the focusing worm gear facilitates assembly and adjustment. Attached Figure Description

[0026] Figure 1 This diagram shows the structure of the high-precision shock-resistant side-focusing lens of Embodiment 1 of the present invention;

[0027] Figure 2 A cross-sectional view of the high-precision shock-resistant side-focusing lens of Embodiment 1 of this utility model is shown;

[0028] Figure 3 This is a cross-sectional view of the high-precision shock-resistant side-focusing lens of Embodiment 1 of the present invention from another angle;

[0029] Figure 4 A schematic diagram of the focusing worm gear is shown;

[0030] Figure 5 A schematic diagram of the inner spiral groove of the focusing worm gear is shown;

[0031] Figure 6 This diagram shows the structural schematic of the aiming scope according to Embodiment 2 of the present invention;

[0032] Figure label:

[0033] 1. Visible light rear sight; 2. High-precision shock-resistant side-focusing lens; 3. Side-focusing handwheel; 4. Adapter sleeve; 5. Eyepiece assembly; 6. Helical gear pair; 8. Self-lubricating component; 9. Focusing guide pin; 10. Focusing worm gear; 11. Worm gear anti-detachment ring; 12. Guide shaft; 13. Guide groove; 14. Internal spiral groove; 15. Objective lens; 16. Objective lens flange; 17. Screw one; 18. Screw two; 19. Screw three. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0035] Example 1

[0036] See Figures 1 to 5 A high-precision, shock-resistant, side-focusing lens includes an objective lens mechanism, a side-focusing mechanism, and a focusing drive mechanism and a focusing transmission mechanism that are connected in a transmission relationship. The focusing drive mechanism is connected to the side-focusing mechanism. The focusing transmission mechanism includes a focusing worm gear 10 and a self-lubricating component 8. The focusing worm gear 10 is sleeved around the objective lens mechanism. The objective lens mechanism has a radially arranged guide groove 13. The self-lubricating component 8 is fixed within the guide groove 13 and protrudes from the objective lens mechanism. The inner wall of the focusing worm gear 10 has an inner spiral groove 14, and the self-lubricating component 8 is transitionally fitted with the inner spiral groove 14. The focusing drive mechanism includes a helical gear pair 6, which is detachably connected to the side-focusing mechanism. The transmission ratio between the helical gear pair 6 and the focusing worm gear 10 is 1:30. The self-lubricating component 8 has... Two sets of self-lubricating components 8 are symmetrically arranged around the objective lens mechanism. Each self-lubricating component 8 is fixed to the guide groove 13 via a focusing guide pin 9. The self-lubricating component 8 is a self-lubricating sleeve fitted onto the focusing guide pin 9. The wall thickness of the self-lubricating sleeve is 0.75 mm. The objective lens mechanism includes an objective lens 15 and an objective lens flange 16. The objective lens flange 16 includes a guide shaft 12 with a cavity inside. The objective lens 15 is located within the cavity. The guide shaft 12 and the objective lens 15 have corresponding guide grooves 13. A helical gear pair 6 is detachably connected to the objective lens flange 16. The teeth of the helical gear pair 6 and the teeth of the focusing worm gear 10 can achieve a self-locking function, effectively preventing blurry images caused by the rotation of the focusing worm gear 10 during impact vibrations.

[0037] The focusing transmission mechanism also includes a worm gear anti-detachment ring 11. The focusing worm gear 10 and the worm gear anti-detachment ring 11 are both sleeved on the guide shaft 12, and the worm gear anti-detachment ring 11 is located outside the focusing worm gear 10.

[0038] The installation process of this high-precision, shock-resistant, side-focusing lens is as follows: First, install the objective lens 15 into the objective lens flange 16. Then, install the self-lubricating component 8 and the focusing guide pin 9 together into the two guide grooves 13 of the objective lens flange 16. Next, screw the focusing worm gear 10 onto the guide shaft 12 of the objective lens flange 16, forming a focusing transmission mechanism with the self-lubricating component 8 and the focusing guide pin 9. Then, use four screws 17 to fix the worm gear anti-detachment ring 11 to the rear end face of the objective lens flange 16. Continue to use four screws 18 to fix the helical gear pair 6 to the upper end face of the objective lens flange 16 and couple it with the focusing worm gear 10 to form a focusing drive mechanism. Finally, use one screw 19 to fix the side-focusing handwheel 3 to the helical gear pair 6, completing the installation of the entire mechanism.

[0039] The side focusing mechanism is a side focusing handwheel 3. When performing focusing operation, the operator rotates the side focusing handwheel 3, and the helical gear pair 6 rotates accordingly. The teeth on the helical gear pair 6 drive the focusing worm wheel 10 that meshes with it to rotate. During the rotation of the focusing worm wheel 10, its inner spiral groove 14 drives the self-lubricating component 8 that is in transition with it to move, so that the self-lubricating component 8 moves along the inner spiral groove 14, thereby realizing the linear movement of the objective lens 15, that is, realizing the focusing function.

[0040] Example 2

[0041] See Figure 6 A sight includes an eyepiece assembly 5, an adapter sleeve 4, and a high-precision shock-resistant side-focusing lens as described in Embodiment 1. The high-precision shock-resistant side-focusing lens is connected to the eyepiece assembly 5 via the adapter sleeve 4.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision, shock-resistant, side-focusing lens, characterized in that, The objective lens includes an objective lens mechanism, a side focusing mechanism, and a focusing drive mechanism and a focusing transmission mechanism that are connected in a transmission relationship. The focusing drive mechanism is connected to the side focusing mechanism. The focusing transmission mechanism includes a focusing worm gear (10) and a self-lubricating component (8). The focusing worm gear (10) is sleeved on the circumference of the objective lens mechanism. The objective lens mechanism is provided with a guide groove (13) along the radial direction. The self-lubricating component (8) is fixed in the guide groove (13) and protrudes from the objective lens mechanism.

2. The high-precision shock-resistant side-focusing lens according to claim 1, characterized in that, The inner wall of the focusing worm gear (10) is provided with an inner spiral groove (14), and the self-lubricating component (8) is in transition fit with the inner spiral groove (14).

3. The high-precision shock-resistant side-focusing lens according to claim 2, characterized in that, The focusing drive mechanism includes a helical gear pair (6), which is detachably connected to the side focusing mechanism.

4. The high-precision shock-resistant side-focusing lens according to claim 3, characterized in that, The transmission ratio between the helical gear pair (6) and the focusing worm gear (10) is 1:(20-40).

5. The high-precision shock-resistant side-focusing lens according to claim 1, characterized in that, The self-lubricating component (8) is provided in two sets, and the two sets of self-lubricating components (8) are arranged at intervals or symmetrically in the circumference of the objective lens mechanism; the self-lubricating component (8) is fixed in the guide groove (13) by the focusing guide pin (9), and the self-lubricating component (8) is a self-lubricating sleeve, which is sleeved on the focusing guide pin (9).

6. The high-precision shock-resistant side-focusing lens according to claim 5, characterized in that, The wall thickness of the self-lubricating sleeve is 0.6-0.8 mm.

7. The high-precision shock-resistant side-focusing lens according to any one of claims 1 to 6, characterized in that, The objective lens mechanism includes an objective lens (15) and an objective lens flange (16). The objective lens flange (16) includes a guide shaft (12). A cavity is formed inside the guide shaft (12). The objective lens (15) is located inside the cavity. The guide shaft and the objective lens (15) are respectively provided with guide grooves (13).

8. The high-precision shock-resistant side-focusing lens according to claim 7, characterized in that, The focusing drive mechanism is detachably connected to the objective lens flange (16).

9. The high-precision shock-resistant side-focusing lens according to any one of claims 1 to 6, characterized in that, The focusing transmission mechanism also includes a worm gear anti-detachment ring (11). The focusing worm gear (10) and the worm gear anti-detachment ring (11) are both sleeved on the guide shaft (12), and the worm gear anti-detachment ring (11) is located outside the focusing worm gear (10).

10. A sight, characterized in that, It includes an eyepiece assembly (5), an adapter sleeve (4), and a high-precision shock-resistant side-focusing lens as described in any one of claims 1 to 9, wherein the high-precision shock-resistant side-focusing lens is connected to the eyepiece assembly (5) via the adapter sleeve (4).

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