A lead selenide detector with adjustable focus
By incorporating a retainer, movable plate, mounting bracket, and lens assembly into the lead selenide detector, and employing plug-in connections and drive screw adjustments, the problem of inflexible focal length adjustment was solved. This enabled precise focal length adjustment and improved stability, while reducing operational complexity and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIYUAN INFRARED DETECTOR ELECTRONIC TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-26
AI Technical Summary
Existing lead selenide detectors have a fixed focal length, which cannot be flexibly adjusted according to actual application scenarios. This results in cumbersome operation, high cost, and difficulty in guaranteeing adjustment accuracy, thus affecting the accuracy of detection results.
By incorporating a retainer, movable plate, mounting bracket, and lens assembly into the lead selenide detector and employing a plug-in connection method, the lens assembly can be disassembled, replaced, and precisely adjusted. Combined with a drive screw and adjustment knob, this ensures flexible adjustment and stability of the focal length.
It enables flexible adjustment of the focal length, improves the detector's usability and adjustment accuracy, reduces the cost of replacing equipment, and enhances the detector's stability and accuracy.
Smart Images
Figure CN224286129U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lead selenide detector technology, specifically to a lead selenide detector with adjustable focal length. Background Technology
[0002] In the field of lead selenide detector technology, lead selenide detectors are widely used in many fields such as spectral analysis, environmental monitoring, industrial inspection, and security monitoring due to their high sensitivity to infrared radiation. In practical applications, different scenarios have different requirements for the detector's focal length. For example, in long-distance target detection scenarios, a longer focal length is needed to clearly capture the target's infrared signal; while in close-range, high-precision detection tasks, a shorter focal length is required to achieve high-resolution detection.
[0003] However, existing technologies, such as the multi-channel lead selenide detector disclosed in patent application number CN202321139583.7, include a detector housing and a cooling device located at the top of the detector housing. The detector housing includes an outer shell and a support cylinder on the top surface of the outer shell. A ventilation pipe is fixedly installed on the inner wall of the outer shell. The cooling device includes a top cover fixedly installed on the top surface of the support cylinder. A semiconductor cooling chip is disposed on the top plate of the top cover. An air delivery device is disposed on the top cover. The air delivery device includes a conical shroud disposed on the inner wall of the top cover. A fan is fixedly installed on the inner wall of the conical shroud. Multiple inclined tubes arranged in a ring at equal intervals are fixedly installed at the bottom end of the conical shroud. A vertical insertion tube is fixedly installed at the end of the inclined tube. This utility model has multiple channels for cooling and heat dissipation, which is beneficial to improving heat dissipation and facilitating use. However, the lead selenide detector in this technical solution has a fixed focal length, which cannot be flexibly adjusted according to the actual application scenario. When faced with different detection requirements, users can only replace the entire detector device, which is not only cumbersome to operate, but also significantly increases the cost of use. Even if some detectors have adjustable focal lengths, their adjustment methods are quite complex, the adjustment accuracy is difficult to guarantee, and the stability of the detector is poor during the adjustment process, which affects the accuracy of the detection results.
[0004] In view of this, we propose a lead selenide detector with adjustable focal length. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a lead selenide detector with adjustable focal length.
[0006] The technical solution of this utility model is:
[0007] An adjustable-focus lead selenide detector includes an instrument body and a base for mounting the instrument body. Two retainers are fixedly connected to the top of the base, and the instrument body is mounted within the retainers. A movable plate is slidably mounted on the top of the base. A placement bracket is fixedly connected to the top end of the movable plate, away from the instrument body. A lens assembly is housed within the placement bracket and is plugged into it. The lens assembly includes an external lens frame and a lens body mounted inside the lens frame. By incorporating retainers, a movable plate, a placement bracket, and a lens assembly into the instrument body and base, and by plugging the lens assembly into the placement bracket, the lens assembly can be detachably replaced. This allows for the replacement of lenses of different specifications to adjust the detector's focus according to different usage requirements. Simultaneously, the retainers and placement bracket provide a stable support structure for the instrument body and the lens assembly.
[0008] In a preferred embodiment, the top of the base body is provided with a mounting groove that slidably connects to the movable plate. This mounting groove provides a precise sliding path for the movable plate, allowing it to slide stably in a specific direction. This ensures more accurate adjustment of the relative position between the lens assembly and the instrument body, thereby improving the accuracy of focus adjustment.
[0009] In a preferred embodiment, a drive screw is rotatably mounted within the mounting slot, and the drive screw is threadedly connected to the movable plate. An adjustment knob, coaxially fixed to the drive screw, is mounted on the outer wall of the base. The drive screw within the mounting slot, threadedly connected to the movable plate, along with the adjustment knob on the outer wall of the base, forms a precisely controllable transmission mechanism. By rotating the adjustment knob, the drive screw rotates, causing the movable plate to move within the mounting slot, thus achieving fine-tuning of the lens assembly's position.
[0010] In a preferred embodiment, the axis of the instrument body and the axis of the lens body are on the same horizontal plane. Ensuring that the axis of the instrument body and the axis of the lens body are on the same horizontal straight line guarantees that light can propagate in a straight line.
[0011] In a preferred embodiment, two guide rods are symmetrically fixedly connected to one end of the placement frame near the instrument body, and the guide rods are plugged into both retainers. Providing guide rods at the end of the placement frame near the instrument body and plugging them into the two retainers provides additional guidance and support for the movement of the placement frame, enhancing the stability of the entire adjustment mechanism.
[0012] In a preferred embodiment, a vertically penetrating limiting groove is provided on each of the left and right outer walls of the lens frame, and a limiting block that cooperates with the limiting groove is integrally formed inside the placement frame. By providing limiting grooves on the left and right outer walls of the lens frame and providing corresponding limiting blocks inside the placement frame, accurate installation and positioning of the lens assembly within the placement frame is achieved.
[0013] In a preferred embodiment, the top of the lens frame is integrally formed with a U-shaped handle. The U-shaped handle at the top of the lens frame facilitates the insertion and removal of the lens assembly by the operator, improving the ease of lens assembly replacement.
[0014] In a preferred embodiment, a support wheel is fixedly connected to the bottom end of the movable plate away from the instrument body, and a placement groove for the support wheel is provided on the bottom of the base. The support wheel at the bottom end of the movable plate away from the instrument body and the placement groove on the bottom of the base provide additional support points for the movable plate. When the movable plate moves to a farther position, the support wheel can share some of the weight.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This invention, by setting a retainer, a movable plate, a placement rack, and a lens assembly on the basis of the instrument body and base, and by connecting the lens assembly and the placement rack with a plug-in connection, realizes the detachable replacement of the lens assembly. This allows for the replacement of different specifications of lenses according to different usage requirements, thereby adjusting the focal length of the detector. At the same time, adjusting the distance between the lens body and the instrument body can also change the focal length of the instrument body. Meanwhile, the setting of the retainer and the placement rack provides a stable support structure for the instrument body and the lens assembly. Attached Figure Description
[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the base and the placement rack in this utility model;
[0019] Figure 3 This is a schematic diagram of the movable plate and the placement rack in this utility model;
[0020] Figure 4 This is a schematic diagram of the lens assembly in this utility model;
[0021] Figure 5 This is the second schematic diagram of the overall structure of this utility model;
[0022] The meanings of the labels in the diagram are as follows:
[0023] 1. Instrument body; 2. Base; 20. Mounting slot; 21. Placement slot; 3. Holder; 4. Adjustment knob; 40. Drive screw; 5. Placement rack; 50. Limiting block; 51. Movable plate; 52. Support wheel; 6. Lens assembly; 60. Lens frame; 61. Lens body; 62. Limiting slot; 63. Handle; 7. Guide rod. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please refer to the accompanying drawings. This utility model provides a technical solution:
[0026] like Figure 1 and Figure 4 As shown, a lead selenide detector with adjustable focal length includes an instrument body 1 and a base 2 for mounting the instrument body 1. Two retainers 3 are fixedly connected to the top of the base 2. The instrument body 1 is mounted within the retainers 3. A movable plate 51 is slidably mounted on the top of the base 2. A placement frame 5 is fixedly connected to the top end of the movable plate 51 away from the instrument body 1. A lens assembly 6 is housed within the placement frame 5 and is plugged into the placement frame 5. The lens assembly 6 includes an external lens frame 60 and a lens body 61 installed inside the lens frame 60. By setting up retainers 3, movable plate 51, placement frame 5, and lens assembly 6 on the instrument body 1 and base 2, and by plugging the lens assembly 6 into the placement frame 5, the lens assembly 6 can be detached and replaced. This allows for the replacement of lenses of different specifications according to different usage requirements, thereby adjusting the detector's focal length. Simultaneously, adjusting the distance between the lens body 61 and the instrument body 1 also changes the focal length of the instrument body 1. Furthermore, the retainers 3 and placement frame 5 provide a stable support structure for the instrument body 1 and the lens assembly 6.
[0027] like Figure 1 As shown, in a preferred embodiment, the top of the base 2 body is provided with a mounting groove 20 that is slidably connected to the movable plate 51. The mounting groove 20 on the top of the base 2 body provides a precise sliding path for the movable plate 51, enabling it to slide stably along a specific direction. This ensures more precise adjustment of the relative position between the lens assembly 6 and the instrument body 1, thereby improving the accuracy of focus adjustment.
[0028] like Figure 2As shown, in a preferred embodiment, a drive screw 40 is rotatably mounted in the mounting groove 20. The drive screw 40 is threadedly connected to the movable plate 51, and an adjustment knob 4, coaxially fixed with the drive screw 40, is mounted on the outer wall of the base 2. The drive screw 40, threadedly connected to the movable plate 51 within the mounting groove 20, along with the adjustment knob 4 on the outer wall of the base 2, forms a precisely controllable transmission mechanism. By rotating the adjustment knob 4, the drive screw 40 rotates, causing the movable plate 51 to move within the mounting groove 20, thus achieving fine-tuning of the position of the lens assembly 6.
[0029] As a preferred embodiment, the axis of the instrument body 1 and the axis of the lens body 61 are on the same horizontal plane. Ensuring that the axis of the instrument body 1 and the axis of the lens body 61 are on the same horizontal straight line guarantees that light can propagate in a straight line.
[0030] like Figure 1 As shown, in a preferred embodiment, the placement frame 5 has two guide rods symmetrically fixedly connected to one end near the instrument body 1. The guide rods 7 are plugged into both retainers 3. The placement of guide rods 7 at the end of the placement frame 5 near the instrument body 1 and their plugging into the two retainers 3 provides additional guidance and support for the movement of the placement frame 5, enhancing the stability of the entire adjustment mechanism.
[0031] like Figure 3 and Figure 4 As shown, in a preferred embodiment, a vertically penetrating limiting groove 62 is provided on the outer walls of both the left and right sides of the lens frame 60, and a limiting block 50 that cooperates with the limiting groove 62 is integrally formed inside the placement frame 5. By providing limiting grooves 62 on the outer walls of both the left and right sides of the lens frame 60 and providing corresponding limiting blocks 50 inside the placement frame 5, accurate installation and positioning of the lens assembly 6 within the placement frame 5 is achieved.
[0032] like Figure 4 As shown, in a preferred embodiment, the top of the lens frame 60 is integrally formed with a U-shaped handle 63. The U-shaped handle 63 on the top of the lens frame 60 facilitates the insertion and removal of the lens assembly 6 by the operator, improving the ease of replacement of the lens assembly 6.
[0033] like Figure 5 As shown, in a preferred embodiment, a support wheel 52 is fixedly connected to the bottom of the movable plate 51 at the end furthest from the instrument body 1, and a placement groove 21 for the support wheel 52 is provided at the bottom of the base 2. The support wheel 52 at the bottom of the movable plate 51 furthest from the instrument body 1, and the placement groove 21 at the bottom of the base 2, provide additional support points for the movable plate 51. When the movable plate 51 moves to a more distant position, the support wheel 52 can share some of the weight.
[0034] In use, the adjustable-focus lead selenide detector of this invention is first securely mounted on top of the base 2 via a retainer 3. The movable plate 51 is placed in the mounting groove 20 of the base 2, and its top mounting bracket 5 is inserted into the retainer 3 via a guide rod 7. The lens assembly 6 is inserted into the mounting bracket 5 via a limiting groove 62 and a limiting block 50, with the axis of the instrument body 1 and the lens body 61 aligned horizontally. When adjusting the focus, rotating the adjusting knob 4 on the outer wall of the base 2 drives the drive screw 40 to rotate, causing the movable plate 51, which is threadedly connected to the screw, to move within the mounting groove 20, thereby driving the mounting bracket 5 and the lens assembly 6 to move synchronously. The support wheel 52 at the bottom of the movable plate 51 can distribute the weight and reduce friction when moving to a greater position. When it is necessary to replace the lens with a different specification, the original lens assembly 6 can be pulled out through the U-shaped handle 63 on the top of the lens frame 60, and the new assembly can be inserted. At the same time, the position of the lens assembly 6 can be finely adjusted, thereby adjusting the distance between the lens assembly 6 and the instrument body 1, and also adjusting the focus of the instrument body 1.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A lead selenide detector with adjustable focus, characterized in that: The instrument includes an instrument body (1) and a base (2) for mounting the instrument body (1). Two retainers (3) are fixedly connected to the top of the base (2). The instrument body (1) is installed in the retainers (3). A movable plate (51) is slidably mounted on the top of the base (2). A placement frame (5) is fixedly connected to the top of the movable plate (51) away from the instrument body (1). A lens assembly (6) is provided in the placement frame (5). The lens assembly (6) is plugged into the placement frame (5). The lens assembly (6) includes a lens frame (60) located on the outside and a lens body (61) installed inside the lens frame (60).
2. The lead selenide detector with adjustable focal length as described in claim 1, characterized in that: The base (2) has a mounting groove (20) on its top that is slidably connected to the movable plate (51).
3. The lead selenide detector with adjustable focal length as described in claim 2, characterized in that: A drive screw (40) is rotatably installed in the mounting groove (20). The drive screw (40) is threadedly connected to the movable plate (51). An adjustment knob (4) is installed on the outer wall of the base (2) and is coaxially fixed with the drive screw (40).
4. The lead selenide detector with adjustable focal length as described in claim 3, characterized in that: The axis of the instrument body (1) and the axis of the lens body (61) are on the same horizontal plane.
5. The lead selenide detector with adjustable focal length as described in claim 4, characterized in that: The placement rack (5) has two guide rods (7) symmetrically fixedly connected to one end of the instrument body (1), and the guide rods (7) are inserted into the two retainers (3).
6. The lead selenide detector with adjustable focal length as described in claim 5, characterized in that: The lens frame (60) has a vertical through-hole limiting groove (62) on both the left and right outer walls, and the placement frame (5) has an integrally formed limiting block (50) that works with the limiting groove (62).
7. The lead selenide detector with adjustable focal length as described in claim 6, characterized in that: The top of the lens frame (60) is integrally formed with a U-shaped handle (63).
8. The lead selenide detector with adjustable focal length as described in claim 7, characterized in that: A support wheel (52) is fixedly connected to the bottom of the movable plate (51) at the end away from the instrument body (1), and a placement groove (21) for preventing the support wheel (52) from being placed at the bottom of the base (2).