A tooling and method for mounting and adjusting the focal plane of an optical-mechanical system

Abstract

This application discloses a fixture and method for adjusting the focal plane of an optical-mechanical system, comprising: a base plate (201) used as a mounting substrate; a bracket (202) fixed on the base plate; a lens adapter (203) for connecting an optical lens and fixed on one side of the bracket (202); a front limiter (204) fixed on the other side of the bracket (202); a sliding frame (205) fixedly connected to the mechanism and serving as a mounting component of the mechanism; a rear limiter (207) fixed to the front limiter (204), and a spring (206) is pressed between the rear limiter (207) and the slot; and a measuring ruler (208) passing through a corresponding hole in the sliding frame (205) and serving as a measuring component. The fixture of this application simplifies the adjustment process and improves the efficiency of focal plane adjustment in optical-mechanical systems, particularly for small optical-mechanical systems.

Description

Technical Field

[0001] This application relates to the field of applied optics technology, and in particular to a focal plane mounting tool and mounting method for an optomechanical system. Background Technology

[0002] Uncooled infrared focal plane detectors have advantages such as small size, light weight, low power consumption, long life, low cost, and fast start-up. At present, the performance of uncooled infrared detectors can meet the technical requirements of most different fields. For most miniaturized optoelectronic products, uncooled infrared detectors are widely used. Therefore, there are strict requirements for the assembly efficiency and reliability in the production process of the corresponding optomechanical system.

[0003] Currently, the focal plane adjustment of small optomechanical systems using uncooled infrared detectors mostly involves repeatedly replacing shims to adjust the focal plane to the ideal position. The corresponding adjustment fixtures are mainly used for installation and elevation. This method requires the installation and debugging experience of the personnel involved and is not easy to operate, resulting in a cumbersome and inefficient adjustment process. Summary of the Invention

[0004] This application provides a tooling and method for mounting and adjusting the focal plane of an optical-mechanical system, which simplifies the mounting and adjusting process and improves the efficiency of focal plane mounting and adjusting in optical-mechanical systems, especially in small optical-mechanical systems.

[0005] This application provides a focal plane mounting fixture for an optical-mechanical system, comprising:

[0006] Base plate 201 is used as a mounting base plate;

[0007] The bracket 202 is fixed on the base plate and is arranged perpendicular to the plane of the base plate 201, and has a first opening thereon;

[0008] Lens adapter 203 is used to connect an optical lens. The lens adapter 203 is fixed to one side of the bracket 202 with the bracket 202 as a reference, and a second opening is provided thereon.

[0009] The front limit 204 is fixed on the other side of the bracket 202, and a third opening corresponding to the first opening and the second opening is provided in the middle area of ​​the bracket.

[0010] The sliding frame 205 is fixedly connected to the movement and serves as a mounting part for the movement. After being fixed, the whole can slide into the first opening, the second opening, and the third opening. The sliding frame 205 is provided with slots.

[0011] The rear limit 207 is fixed to the front limit 204, and a spring 206 is pressed between the rear limit 207 and the slot. The rear limit 207 is used for static support during the assembly and adjustment process. A distance measuring ruler 208 is also provided on the side edge of the rear limit 207.

[0012] The measuring ruler 208 passes through the corresponding hole in the sliding frame 205 and serves as a measuring component.

[0013] Optional, also includes:

[0014] Adjusting screw 209 passes through the hole in the middle of the rear limit 207 and is installed in the corresponding threaded hole of the sliding frame 205 to drive the sliding frame 205 to slide back and forth.

[0015] Optionally, the first opening, the second opening, and the third opening are all rectangular.

[0016] Optionally, the bracket 202 is provided with corresponding stops on both sides for connecting and installing the lens adapter 203 and the front limit 204.

[0017] Optionally, the sliding frame 205 is provided with a plurality of holes and slots for installing a corresponding number of springs.

[0018] This application also proposes a method for adjusting the focal plane of an optical-mechanical system, which is implemented using the aforementioned optical-mechanical system focal plane adjustment fixture, and includes the following steps:

[0019] Connect the optical lens to the lens adapter 203;

[0020] During the assembly and adjustment process, the sliding bracket 205, which is fixed to the movement, is positioned to engage with the optical lens stop by turning the adjusting screw 209.

[0021] Record the first scale reading using the 208 rangefinder;

[0022] Tighten the adjusting screw 209 in the opposite direction to drive the sliding bracket 205 to slide in the square hole of the front limit 204 to determine the optimal imaging position.

[0023] Record the second graduation using the 208 measuring ruler;

[0024] Calculate the difference between the two scale positions to determine the shim spacing between the movement and the lens. Select the appropriate shim to install the optical lens and the movement, and complete the assembly and adjustment.

[0025] This application provides a simple optical-mechanical system focal plane assembly and adjustment fixture, which simplifies the assembly and adjustment process and improves the efficiency of focal plane assembly and adjustment in optical-mechanical systems, especially in small optical-mechanical systems.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is an example of the overall structure of the focal plane assembly tooling for the optomechanical system according to an embodiment of this application;

[0029] Figure 2 This is a schematic illustration of an application example applicable to the focal plane adjustment of the optomechanical system in this application embodiment;

[0030] Figure 3 A cross-sectional schematic diagram of an application example applicable to the assembly and adjustment of the optomechanical system in this application embodiment. Detailed Implementation

[0031] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0032] This application provides a focal plane mounting fixture for an optical-mechanical system, such as... Figure 1 As shown, the focal plane mounting fixture for the optical-mechanical system includes a base plate 201, a bracket 202, a lens adapter 203, a front limiter 204, a sliding bracket 205, a spring 206, a rear limiter 207, a rangefinder 208, and an adjusting screw 209. Specifically, in some embodiments:

[0033] The base plate 201 is used as the mounting base plate, that is, the mounting base plate of the entire tooling.

[0034] The bracket 202 is fixed to the base plate and is arranged perpendicular to the plane of the base plate 201, and has a first opening. The bracket 202 can be connected and fastened to the base plate 201 with screws, and also serves as the positioning reference for the lens adapter 203.

[0035] A lens adapter 203 is used to connect the optical lens 10. The lens adapter 203 is fixed to one side of the bracket 202 with the bracket 202 as a reference, and has a second opening. In some examples, the lens adapter 203 and the bracket 201 can be fastened together with screws. The lens adapter 203 is used for positioning and mounting the optical lens 10 and the optical dome.

[0036] A front limiter 204 is fixed to the other side of the bracket 202, and a third opening corresponding to the first and second openings is provided in its middle area. The front limiter 204 can be pressed... Figure 1 The position shown is for installation in conjunction with the stop of bracket 202.

[0037] The sliding frame 205 is fixedly connected to the movement and serves as a mounting part for the movement. After being fixed, the whole can slide into the first opening, the second opening, and the third opening. The sliding frame 205 is provided with slots.

[0038] The rear limiter 207 is fixed to the front limiter 204, and a spring 206 is pressed between the rear limiter 207 and the slot. The rear limiter 207 is used for static support during assembly and adjustment. A rangefinder 208 is also provided on the side edge of the rear limiter 207. In some examples, the sliding frame 205 is fastened to the infrared movement with screws and is used as a mounting part of the movement. After installation, the whole assembly slides into the square hole of the front limiter 204. Then, the spring 206 is locked into the slot at the rear end of the sliding frame 205, and the rear limiter 207 is fastened to the front limiter 204 to ensure that the spring 206 is firmly pressed and used for static support during assembly and adjustment.

[0039] The measuring ruler 208 passes through the corresponding hole in the sliding frame 205 and serves as a measuring component. The measuring ruler 208 is pressed... Figure 1 The distance measuring ruler 208 is installed in the rear limiter 207 at the indicated position, passing through the corresponding hole in the sliding frame 205, and is used as a measuring component. In some examples, the distance measuring ruler 208 can be a cylindrical structure. Designing a cylindrical distance measuring ruler provides accurate and reliable quantitative results for the selection of shims during assembly and adjustment, thereby improving assembly and adjustment efficiency.

[0040] This application provides a simple optical-mechanical system focal plane assembly and adjustment fixture, which simplifies the assembly and adjustment process and improves the efficiency of focal plane assembly and adjustment in optical-mechanical systems, especially in small optical-mechanical systems.

[0041] In some embodiments, it also includes:

[0042] Adjusting screw 209 passes through the hole in the middle of the rear limit 207 and is installed in the corresponding threaded hole of the sliding frame 205 to drive the sliding frame 205 to slide back and forth. In different application examples, the overall tooling shape and corresponding mating stop dimensions can be changed according to the different optomechanical systems and the size and volume of the mechanism.

[0043] In some embodiments, the first opening, the second opening, and the third opening are all rectangular, for example, square holes.

[0044] In some embodiments, the bracket 202 is provided with corresponding stops on both sides for connecting and installing the lens adapter 203 and the front limit 204.

[0045] In some embodiments, the sliding frame 205 is provided with a plurality of slots for mounting a corresponding number of springs. In some examples, the sliding frame 205 is provided with four slots distributed at 90° to mount four springs 206.

[0046] This application also proposes a method for adjusting the focal plane of an optical-mechanical system, which is implemented using the aforementioned optical-mechanical system focal plane adjustment fixture, and includes the following steps:

[0047] Connect the optical lens to the lens adapter 203;

[0048] During the assembly and adjustment process, the sliding bracket 205, which is fixed to the movement, is positioned to engage with the optical lens stop by turning the adjusting screw 209.

[0049] Record the first scale reading using the 208 rangefinder;

[0050] Tighten the adjusting screw 209 in the opposite direction to drive the sliding bracket 205 to slide in the square hole of the front limit 204 to determine the optimal imaging position.

[0051] Record the second graduation using the 208 measuring ruler;

[0052] Calculate the difference between the two scale positions to determine the shim spacing between the movement and the lens. Select the appropriate shim to install the optical lens and the movement, and complete the assembly and adjustment.

[0053] Specifically, after installing the focal plane adjustment fixture of the optical-mechanical system described in the aforementioned embodiment, focal plane adjustment can begin according to different lenses. Figure 2 The following is a schematic illustration of an application example suitable for focal plane adjustment in an optical-mechanical system. Figure 3A cross-sectional diagram of an application example of the assembly and adjustment of an optical-mechanical system is given. In this example, the optical lens 10 and the lens adapter 203 are positioned and installed using screws and a stop. During the assembly and adjustment process, the sliding bracket 205, which is fixed to the mechanism, is positioned with the optical lens stop by turning the adjusting screw 209. The current scale is recorded according to the distance measuring ruler 208. Then, the adjusting screw 209 is turned in the opposite direction to move the sliding bracket 205 to slide in the square hole of the front limit 204 to find the optimal imaging position. The scale after assembly and adjustment is recorded. The infrared mechanism is removed, and the difference between the two scale positions is calculated to determine the shim distance between the infrared mechanism and the lens. Finally, a suitable shim is selected to install the optical lens and the infrared mechanism, thus completing the assembly and adjustment.

[0054] The optical-mechanical system focal plane assembly tooling of this application embodiment has a simple structure and is easy to install. It achieves linear adjustment of the optical-mechanical focal plane through simple limiting parts and sliding components, which greatly improves production assembly efficiency.

[0055] The optical-mechanical system focal plane mounting fixture of this application provides lens and optical dome mounting interfaces, offering mounting and adjustment conditions for different types of optical-mechanical systems. It has wide applications and is compatible with various optical-mechanical systems.

[0056] It should be noted that, in the embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0057] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0058] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims. All of these forms are within the protection scope of this application.

Claims

1. A focal plane mounting fixture for an optical-mechanical system, characterized in that, include: Base plate (201), used as a mounting base plate; A bracket (202) is fixed on the base plate and is arranged perpendicular to the plane of the base plate (201), and a first opening is provided thereon; A lens adapter (203) is used to connect an optical lens. The lens adapter (203) is fixed to one side of the bracket (202) with the bracket (202) as a reference, and a second opening is provided thereon. A front limiter (204) is fixed on the other side of the bracket (202), and a third opening corresponding to the first opening and the second opening is provided in the middle area; The sliding frame (205) is fixedly connected to the movement and serves as the mounting part of the movement. After being fixed, the whole can slide into the first opening, the second opening, and the third opening. The sliding frame (205) is provided with slots. The rear limit (207) is fixed to the front limit (204), and a spring (206) is pressed between the rear limit (207) and the slot. The rear limit (207) is used for static support during the assembly and adjustment process. A measuring ruler (208) is also provided on the side edge of the rear limit (207). The measuring ruler (208) passes through the corresponding hole in the sliding frame (205) and is used as a measuring component; Also includes: The adjusting screw (209) passes through the hole in the middle of the rear limit (207) and is installed in the corresponding threaded hole of the sliding frame (205) to drive the sliding frame (205) to slide back and forth.

2. The focal plane mounting fixture for the optical-mechanical system as described in claim 1, characterized in that, The first opening, the second opening, and the third opening are all rectangular.

3. The focal plane mounting fixture for the optical-mechanical system as described in claim 1, characterized in that, The bracket (202) has corresponding stops on both sides for connecting and installing the lens adapter (203) and the front limit (204).

4. The focal plane mounting fixture for the optical-mechanical system as described in claim 1, characterized in that, The sliding frame (205) is provided with multiple holes and slots for installing a corresponding number of springs.

5. A method for adjusting the focal plane of an optical-mechanical system, characterized in that, The process, implemented using the optical-mechanical system focal plane mounting fixture as described in any one of claims 1-4, includes the following steps: Connect the optical lens to the lens adapter (203); During the assembly and adjustment process, the sliding frame (205) fixed to the movement is positioned in conjunction with the optical lens stop by turning the adjusting screw (209); Record the first scale reading using a distance measuring ruler (208); Tighten the adjusting screw (209) in the opposite direction to drive the sliding frame (205) to slide in the square hole of the front limit (204) to determine the optimal imaging position; Record the second graduation using the measuring ruler (208); Calculate the difference between the two scale positions to determine the shim spacing between the movement and the lens. Select the appropriate shim to install the optical lens and the movement, and complete the assembly and adjustment.

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