Side focusing infrared lens

Abstract

The utility model relates to a side focusing infrared lens, and belongs to the technical field of infrared lenses. The focusing lens mainly comprises a lens, a main lens barrel, a guide block, a focusing lens barrel, a guide groove seat, a focusing cam, a pressing block, a knob, a pressing ring and a separation blade, the side focusing design avoids sufficient space needed by a traditional hand wheel focusing mechanism, reduces the influence of the whole product structure on the focusing mechanism, enables the lens to still achieve the focusing function under the condition that the space is limited, can achieve focusing rapidly and accurately through the design of the focusing cam and the guide block, and enables the focusing mechanism to be stable when the rotary knob rotates. By means of the matching of the arc-shaped groove at the bottom end of the focusing cam and the guide block, the position of the rear lens in the focusing lens cone can be directly driven to be rapidly adjusted, so that the effect of rapid and clear focusing is achieved, the structural design is relatively simple, the assembly relation among all structural parts is clear, high-precision complex structural parts do not need to be machined like a traditional structure, and the production cost is reduced. Therefore, the processing difficulty and the production cost are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of infrared lens technology, and specifically relates to a side-focusing infrared lens. Background Technology

[0002] With the increasing usage and application scenarios of infrared lenses, traditional handwheel focusing mechanisms can no longer meet customer requirements. Traditional handwheel focusing has the following problems: it requires ample space and is easily affected by the overall product structure, making it unusable; the focusing cycle is long, and if rapid and clear focusing is required, the traditional structure is difficult to achieve; the traditional structure is complex to manufacture and requires high precision in structural components. Utility Model Content

[0003] To overcome the problems of traditional handwheel focusing requiring ample space, being easily affected by the overall product structure and rendered unusable, having long focusing cycles and failing to achieve rapid and clear focusing, and the complexity of traditional structures requiring high precision in manufacturing, this invention provides a side-focusing infrared lens. This side-focusing design avoids the ample space required by traditional handwheel focusing mechanisms, reduces the impact of the overall product structure on the focusing mechanism, and allows the lens to achieve focusing even in space-constrained conditions. Through the design of the focusing cam and guide block, it can achieve fast and accurate focusing. When the knob is turned, the arc-shaped groove at the bottom of the focusing cam, in cooperation with the guide block, can directly drive the rear lens element inside the focusing lens barrel to quickly adjust its position, thereby achieving a rapid and clear focusing effect. The structural design is relatively simple, and the assembly relationship between its various structural components is clear. Unlike traditional structures, it does not require the machining of high-precision and complex structural components, thus reducing manufacturing difficulty and production costs.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A side-focusing infrared lens mainly includes a lens, a main lens barrel, a guide block, a focusing lens barrel, a guide groove seat, a focusing cam, a pressure block, a knob, a pressure ring, and a baffle. The lens is divided into a front lens and a rear lens. The focusing lens barrel is installed inside the main lens barrel. The pressure ring is divided into a large pressure ring and a small pressure ring. The front lens is installed inside the main lens barrel, and the large pressure ring, which restricts the axial movement of the front lens, is installed inside the main lens barrel and located at the front end of the front lens. The rear lens is installed inside the focusing lens barrel, and the small pressure ring, which restricts the axial movement of the rear lens, is installed inside the focusing lens barrel and located in front of the rear lens. At the end, a mounting groove is opened at the top of the main lens barrel, and a guide slot seat is installed in the mounting groove. A rectangular groove is opened on the guide slot seat. A mounting hole is opened on the side wall of the focusing lens barrel. A guide block is installed in the rectangular groove and its bottom end is connected to the mounting hole of the focusing lens barrel. A focusing cam is installed inside the guide slot seat. An arc-shaped groove is opened at the bottom end of the focusing cam. The top end of the guide block is installed in the arc-shaped groove. A pressure block is installed on the top of the focusing cam and engages with the guide slot seat. A knob is rotatably installed on the pressure block and is connected to the focusing cam. A connecting groove is opened at the center of the focusing cam and the knob. A baffle is installed in the connecting groove. The pressure block and the knob are connected to the focusing cam through the baffle.

[0005] The knob has an anti-slip groove.

[0006] The guide block includes a rectangular connecting block, an upper connecting roller, and a lower connecting roller. The upper connecting roller and the lower connecting roller are respectively installed at the top and bottom of the rectangular connecting block. The rectangular connecting block is installed in a rectangular groove. The upper connecting roller is installed in the arc-shaped groove of the focusing cam. The lower connecting roller is installed inside the mounting hole of the focusing lens barrel.

[0007] The focusing cam has a cross-shaped protrusion at its top and a cross-shaped groove at its bottom. The focusing cam engages with the cross-shaped groove of the knob via the cross-shaped protrusion.

[0008] The beneficial effects of this utility model are:

[0009] This utility model's side-focusing design avoids the ample space required by traditional handwheel focusing mechanisms, reducing the impact of the overall product structure on the focusing mechanism. This allows the lens to still achieve focusing functionality even in space-constrained conditions. Through the design of the focusing cam and guide block, focusing can be achieved quickly and accurately. When the knob is turned, the arc-shaped groove at the bottom of the focusing cam, in cooperation with the guide block, can directly drive the rear lens element inside the focusing lens barrel to quickly adjust its position, thereby achieving a fast and clear focusing effect. The structural design is relatively simple, and the assembly relationship between its various structural components is clear. Unlike traditional structures, it does not require the processing of high-precision and complex structural components, thus reducing processing difficulty and production costs. Attached Figure Description

[0010] Figure 1This is an isometric schematic diagram of the present invention.

[0011] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0012] Figure 3 This is another three-dimensional schematic diagram of this utility model.

[0013] Figure 4 This is an exploded view of this utility model.

[0014] Figure 5 This is another exploded view of this utility model.

[0015] Figure 6 This is a half-sectional view of the present invention.

[0016] Figure 7 This is a schematic diagram of the focusing lens barrel structure of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a side-focusing infrared lens, which mainly includes a lens 1, a main lens barrel 2, a guide block 3, a focusing lens barrel 4, a guide groove seat 5, a focusing cam 6, a pressure block 7, a knob 8, a pressure ring 9, and a baffle 10. The lens 1 is divided into a front lens 11 and a rear lens 12. The focusing lens barrel 4 is installed inside the main lens barrel 2. The pressure ring 9 is divided into a large pressure ring 91 and a small pressure ring 92. The front lens 11 is installed inside the main lens barrel 2. The large pressure ring 91, which restricts the axial movement of the front lens 11, is installed inside the main lens barrel 2 and located at the front end of the front lens 11. The rear lens 12 is installed inside the focusing lens barrel 4. The small pressure ring 92, which restricts the axial movement of the rear lens 12, is installed inside the focusing lens barrel 4 and located at the front end of the rear lens 12. The top of the tube 2 has a mounting groove 21, and the guide slot seat 5 is installed in the mounting groove 21. The guide slot seat 5 has a rectangular groove 51. The side wall of the focusing lens tube 4 has a mounting hole 41. The guide block 3 is installed in the rectangular groove 51 and its bottom end is connected to the mounting hole 41 of the focusing lens tube 4. The focusing cam 6 is installed inside the guide slot seat 5. The bottom end of the focusing cam 6 has an arc groove 61. The top end of the guide block 3 is installed in the arc groove 61. The pressure block 7 is installed on the top end of the focusing cam 6 and is engaged with the guide slot seat 5. The knob 8 is rotatably installed on the pressure block 7 and is connected to the focusing cam 6. The center of the focusing cam 6 and the knob 8 has a connecting groove 81. The baffle 10 is installed in the connecting groove 81. The pressure block 7 and the knob 8 are connected to the focusing cam 6 through the baffle 10.

[0019] like Figure 3 , Figure 5As shown, the knob 8 has an anti-slip groove 82; the anti-slip groove 82 on the knob 8 increases the friction, making the focusing operation smoother and less prone to slipping.

[0020] like Figure 6 As shown, the guide block 3 includes a rectangular connecting block 31, an upper connecting roller 32, and a lower connecting roller 33. The upper connecting roller 32 and the lower connecting roller 33 are respectively installed at the top and bottom of the rectangular connecting block 31. The rectangular connecting block 31 is installed in the rectangular groove 51, the upper connecting roller 32 is installed in the arc-shaped groove 61 of the focusing cam 6, and the lower connecting roller 33 is installed inside the mounting hole 41 of the focusing lens barrel 4. This connection method can provide high guiding accuracy. The rectangular connecting block 31 is located in the rectangular groove 51, which makes the overall structure more stable during movement, thereby helping to improve the accuracy and stability of the entire focusing system.

[0021] like Figure 4 , Figure 5 As shown, the focusing cam 6 has a cross-shaped protrusion 62 at its top and a cross-shaped groove 83 at its bottom. The focusing cam 6 engages with the cross-shaped groove 83 of the knob 8 via the cross-shaped protrusion 62, ensuring a secure connection between the focusing cam 6 and the knob 8. The design of the cross-shaped protrusion 62 at the top of the focusing cam 6 engaging with the cross-shaped groove 83 at the bottom of the knob 8 allows for easy focusing by rotating the knob 8. This engagement method ensures effective force transmission; simply operating the knob 8 will rotate the focusing cam 6, thereby adjusting the position of the focusing lens barrel 4 through the action of the guide block 3, thus achieving the focusing function.

[0022] Work process:

[0023] When focusing the lens is required, the user rotates the knob 8 by holding the anti-slip groove 82 with their fingers. Since the knob 8 is connected to the focusing cam 6, the rotation of the knob 8 drives the focusing cam 6, which is engaged with it, to rotate. When the focusing cam 6 rotates, the arc-shaped groove 61 at its bottom pushes the upper connecting roller 32 of the guide block 3, causing the guide block 3 to move within the rectangular groove 51. The lower connecting roller 33 of the guide block 3 is connected to the mounting hole 41 of the focusing lens barrel 4. Therefore, the movement of the guide block 3 drives the focusing lens barrel 4 to move within the main lens barrel 2. The inward movement of the focusing lens barrel 4 causes the rear lens element 12 to move as well. This is because the rear lens element 12 is installed inside the focusing lens barrel 4 via a small pressure ring 92, which restricts the axial movement of the rear lens element 12. Therefore, it moves along with the focusing lens barrel 4. During this process, the position of the front lens element 11 remains unchanged, while the relative distance between the front and rear lenses changes, thereby achieving the purpose of adjusting the focal length and realizing the adjustment of clear imaging of the subject. If it is necessary to readjust the focal length, the user can rotate the knob 8 again and repeat the above steps.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A side-focusing infrared lens, characterized in that: The side-focusing infrared lens includes a lens (1), a main lens barrel (2), a guide block (3), a focusing lens barrel (4), a guide slot seat (5), a focusing cam (6), a pressure block (7), a knob (8), a pressure ring (9), and a baffle (10). The lens (1) is divided into a front lens (11) and a rear lens (12). The focusing lens barrel (4) is installed inside the main lens barrel (2). The pressure ring (9) is divided into a large pressure ring (91) and a small pressure ring (92). The front lens (11) is installed inside the main lens barrel (2). The large pressure ring (91), which is used to restrict the axial movement of the front lens (11), is installed inside the main lens barrel (2) and located at the front end of the front lens (11). The rear lens (12) is installed inside the focusing lens barrel (4). The small pressure ring (92), which is used to restrict the axial movement of the rear lens (12), is installed inside the focusing lens barrel (4) and located at the front end of the rear lens (12). A mounting groove (2) is provided at the top of the main lens barrel (2). 1) The guide slot (5) is installed in the mounting slot (21). A rectangular slot (51) is provided on the guide slot (5). Mounting holes (41) are provided on the side wall of the focusing lens barrel (4). The guide block (3) is installed in the rectangular slot (51). Its bottom end is connected to the mounting hole (41) of the focusing lens barrel (4). The focusing cam (6) is installed inside the guide slot (5). An arc-shaped groove (61) is provided at the bottom end of the focusing cam (6). The top of the guide block (3) is... Installed in the arc groove (61), the pressure block (7) is installed on the top of the focusing cam (6) and is engaged with the guide groove seat (5). The knob (8) is rotatably installed on the pressure block (7) and connected to the focusing cam (6). A connecting groove (81) is provided at the center of the focusing cam (6) and the knob (8). The baffle (10) is installed in the connecting groove (81). The pressure block (7) and the knob (8) are connected to the focusing cam (6) through the baffle (10).

2. The side-focusing infrared lens as described in claim 1, characterized in that: The knob (8) is provided with an anti-slip groove (82).

3. A side-focusing infrared lens as described in claim 1, characterized in that: The guide block (3) includes a rectangular connecting block (31), an upper connecting roller (32), and a lower connecting roller (33). The upper connecting roller (32) and the lower connecting roller (33) are respectively installed at the top and bottom of the rectangular connecting block (31). The rectangular connecting block (31) is installed in the rectangular groove (51). The upper connecting roller (32) is installed in the arc groove (61) of the focusing cam (6). The lower connecting roller (33) is installed inside the mounting hole (41) of the focusing lens barrel (4).

4. A side-focusing infrared lens as described in claim 1, characterized in that: The focusing cam (6) has a cross-shaped protrusion (62) at its top and a cross-shaped groove (83) at its bottom. The focusing cam (6) engages with the cross-shaped groove (83) of the knob (8) through the cross-shaped protrusion (62).

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