CN216310368U - Optical focal plane adjusting structure of non-refrigeration detector - Google Patents
Optical focal plane adjusting structure of non-refrigeration detector Download PDFInfo
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- CN216310368U CN216310368U CN202123283390.2U CN202123283390U CN216310368U CN 216310368 U CN216310368 U CN 216310368U CN 202123283390 U CN202123283390 U CN 202123283390U CN 216310368 U CN216310368 U CN 216310368U
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Abstract
The utility model relates to an optical focal plane adjusting structure of a non-refrigeration detector, which comprises a lens adapter and a machine core adapter; one end of the lens adapter is fixedly connected with the infrared lens component, the other end of the lens adapter is of a first hollow cylindrical structure, an outer straight surface is arranged on the outer side wall of the first hollow cylindrical structure, and a threaded hole is formed in the outer straight surface; one end of the core adaptor is fixedly connected with the non-refrigeration standard core, the other end of the core adaptor is of a second hollow cylindrical structure, an inner straight surface is arranged on the inner side wall of the second hollow cylindrical structure, and a long slot hole is formed in the inner straight surface; the first hollow cylindrical structure is inserted into the second hollow cylindrical structure, the outer diameter of the first hollow cylindrical structure is in tolerance fit with the inner diameter of the second hollow cylindrical structure through an aperture, and the outer straight surface is in tolerance fit with the inner straight surface. The utility model simplifies the adjustment of the optical focal plane of the non-refrigeration detector, does not need to be repeatedly assembled and disassembled, and can ensure that the imaging of the machine core is positive.
Description
Technical Field
The utility model relates to the field of non-refrigeration detectors, in particular to an optical focal plane adjusting structure of a non-refrigeration detector.
Background
Because an error exists between the focal plane of the uncooled detector and the installation reference plane of the machine core, the processing and installation errors also exist between the imaging plane of the uncooled fixed-focus lens and the theoretical value; therefore, in practical use, the distance between the focal plane of the lens and the focal plane of the detector is usually required to be adjusted to achieve the best imaging effect.
In the prior art, the distance between a lens focal plane and a detector focal plane is adjusted by adjusting the thickness of a gasket/the number of the gaskets between an infrared lens assembly and a non-refrigeration standard movement in one or more ways; the method needs repeated tests and disassembly and assembly, and the operation process is complicated.
In the second prior art, adjustment is performed by arranging threads, and a threaded structure adapter is additionally arranged between the infrared lens assembly and the non-refrigeration standard machine core. The method is convenient, but the distance adjustment is carried out by rotating due to the characteristic of the thread, so that the 'right image' of the core imaging is difficult to guarantee, and the adjustment needs to be tested repeatedly, thereby causing complex operation.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an optical focal plane adjusting structure of an uncooled detector, which can simply adjust the parallel front-back distance of an infrared lens component and an uncooled standard machine core without repeated disassembly and ensure that the imaging of the machine core is positive.
The technical scheme for solving the technical problems is as follows: an optical focal plane adjusting structure of a non-refrigeration detector comprises a lens adapter and a core adapter which are arranged between an infrared lens component and a non-refrigeration standard core of the non-refrigeration detector; one end of the lens adapter is provided with a structure matched with the interface of the infrared lens assembly and fixedly connected with the infrared lens assembly, the other end of the lens adapter is of a first hollow cylindrical structure, the outer side wall of the first hollow cylindrical structure is provided with a plurality of outer straight surfaces, and each outer straight surface is provided with a threaded hole; one end of the core adaptor is provided with a structure matched with the interface of the non-refrigeration standard core and is fixedly connected with the non-refrigeration standard core, the other end of the core adaptor is of a second hollow cylindrical structure, the inner side wall of the second hollow cylindrical structure is provided with a plurality of inner straight surfaces, and each inner straight surface is provided with a long slot hole extending along the direction of the optical axis; the first hollow cylindrical structure is inserted into the second hollow cylindrical structure, the outer diameter of the first hollow cylindrical structure is matched with the inner diameter of the second hollow cylindrical structure through aperture tolerance, and meanwhile, the plurality of outer straight surfaces are in one-to-one correspondence with the plurality of inner straight surfaces and are matched through tolerance; the first hollow cylindrical structure and the second hollow cylindrical structure are fixedly connected together through a plurality of screws which are correspondingly inserted in a plurality of groups of screw hole site pairs formed by the long slotted holes and the threaded holes.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, a plurality of the outer straight surfaces are uniformly distributed on the outer side wall of the first hollow cylindrical structure, and a plurality of the inner straight surfaces are uniformly distributed on the inner side wall of the second hollow cylindrical structure.
Furthermore, the number of the outer straight surfaces and the number of the inner straight surfaces are four, and the four outer straight surfaces are uniformly distributed on the upper position, the lower position, the left position and the right position of the outer side wall of the first hollow cylindrical structure; the four inner straight surfaces are uniformly distributed on the upper, lower, left and right positions of the inner side wall of the second hollow cylindrical structure.
Furthermore, one end of the lens adapter is fixedly connected with the infrared lens assembly through a screw; and one end of the movement adapter is fixedly connected with the non-refrigeration standard movement through a screw.
The utility model has the beneficial effects that: in the optical focal plane adjusting structure of the uncooled detector, the outer diameter of the first hollow cylindrical structure is in tolerance fit with the inner diameter of the second hollow cylindrical structure through the aperture, and the outer straight surface on the outer side wall of the first hollow cylindrical structure is in tolerance fit with the inner straight surface on the inner side wall of the second hollow cylindrical structure, so that the movement adaptor can be sleeved with the lens adaptor to move in parallel along the optical axis direction for adjusting the distance under the condition of ensuring that the imaging angle is fixed, namely the movement is imaged as a positive image; in addition, the threaded hole on the outer straight surface and the long slotted hole on the inner straight surface form a screw hole position type interface, so that the movement adapter and the lens adapter can be fixed by using screws when moving to a clear imaging position in parallel along the optical axis direction; the utility model simplifies the adjustment of the optical focal plane of the non-refrigeration detector, does not need to be repeatedly assembled and disassembled, and can ensure that the imaging angle of the machine core is positive.
Drawings
Fig. 1 is an exploded view of an optical focal plane adjustment structure of an uncooled detector according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the infrared lens assembly comprises an infrared lens assembly, 2, a lens adapter, 21, an outer straight surface, 22, a threaded hole, 3, a movement adapter, 31, an inner straight surface, 32, a long slotted hole, 4, a non-refrigeration standard movement, 5 and a screw.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1, an optical focal plane adjusting structure of an uncooled detector includes a lens adapter 2 and a core adapter 3, which are arranged between an infrared lens assembly 1 and an uncooled standard core 4 of the uncooled detector; one end of the lens adapter 2 is provided with a structure matched with the interface of the infrared lens assembly 1 and is fixedly connected with the infrared lens assembly 1, the other end of the lens adapter 2 is of a first hollow cylindrical structure, the outer side wall of the first hollow cylindrical structure is provided with a plurality of outer straight surfaces 21, and each outer straight surface 21 is provided with a threaded hole 22; one end of the machine core adaptor 3 is provided with a structure matched with the interface of the non-refrigeration standard machine core 4 and is fixedly connected with the non-refrigeration standard machine core 4, the other end of the machine core adaptor 3 is of a second hollow cylindrical structure, the inner side wall of the second hollow cylindrical structure is provided with a plurality of inner straight surfaces 31, and each inner straight surface 31 is provided with a long slot hole 32 extending along the optical axis direction; the first hollow cylindrical structure is inserted into the second hollow cylindrical structure, the outer diameter of the first hollow cylindrical structure is matched with the inner diameter of the second hollow cylindrical structure through aperture tolerance, and meanwhile, the plurality of outer straight surfaces 21 are in one-to-one correspondence with the plurality of inner straight surfaces 31 and are matched through tolerance; the first hollow cylindrical structure and the second hollow cylindrical structure are fixedly connected together by inserting a plurality of screws 5 into a plurality of screw hole pairs formed by the long slotted hole 32 and the threaded hole 22 in a one-to-one correspondence manner.
In this particular embodiment: the plurality of outer straight surfaces 21 are uniformly distributed on the outer side wall of the first hollow cylindrical structure, and the plurality of inner straight surfaces 31 are uniformly distributed on the inner side wall of the second hollow cylindrical structure. Specifically, four outer straight surfaces 21 and four inner straight surfaces 31 are respectively arranged, and the four outer straight surfaces 21 are uniformly distributed on four positions, namely the upper position, the lower position, the left position and the right position, of the outer side wall of the first hollow cylindrical structure; the four inner straight surfaces 31 are uniformly distributed on the upper, lower, left and right positions of the inner side wall of the second hollow cylindrical structure; four corresponding screws 5 are also provided.
In this particular embodiment: one end of the lens adapter 2 is fixedly connected with the infrared lens component 1 through a screw; or/and one end of the movement adaptor 3 is fixedly connected with the non-refrigeration standard movement 4 through a screw.
The process of adjusting the optical focal plane by using the optical focal plane adjusting structure of the uncooled detector comprises the following steps:
the lens adapter 2 is arranged on the infrared lens component 1, and the core adapter 3 is arranged on the non-refrigeration standard core 4;
sleeving the movement adapter 3 into the lens adapter 2, matching the lens adapter 2 with the movement adapter 3 through the aperture tolerance, and enabling the threaded hole 22 on the lens adapter 2 to correspond to the long slotted hole 32 on the movement adapter 3; moving the movement adaptor 3 back and forth, and observing an image in the moving process until the image is clear;
and (3) sequentially penetrating through the long slotted hole 32 and the corresponding threaded hole 22 by using a screw 5, and locking the movement adapter 3 and the lens adapter 2.
In the optical focal plane adjusting structure of the uncooled detector, the outer diameter of the first hollow cylindrical structure is in tolerance fit with the inner diameter of the second hollow cylindrical structure through the aperture, and the outer straight surface on the outer side wall of the first hollow cylindrical structure is in tolerance fit with the inner straight surface on the inner side wall of the second hollow cylindrical structure, so that the movement adaptor can be sleeved with the lens adaptor to move in parallel along the optical axis direction for adjusting the distance under the condition of ensuring that the imaging angle is fixed, namely the movement is imaged as a positive image; in addition, the threaded hole on the outer straight surface and the long slotted hole on the inner straight surface form a screw hole position type interface, so that the movement adapter and the lens adapter can be fixed by using screws when moving to a clear imaging position in parallel along the optical axis direction; the utility model simplifies the adjustment of the optical focal plane of the non-refrigeration detector, does not need to be repeatedly assembled and disassembled, and can ensure that the imaging angle of the machine core is positive.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides an optical focal plane of uncooled detector adjusts structure which characterized in that: the optical lens adapter comprises a lens adapter (2) and a core adapter (3) which are arranged between an infrared lens assembly (1) and a non-refrigeration standard core (4) of a non-refrigeration detector; one end of the lens adapter (2) is provided with a structure matched with the interface of the infrared lens component (1) and is fixedly connected with the infrared lens component (1), the other end of the lens adapter (2) is of a first hollow cylindrical structure, the outer side wall of the first hollow cylindrical structure is provided with a plurality of outer straight surfaces (21), and each outer straight surface (21) is provided with a threaded hole (22); one end of the machine core adaptor (3) is provided with a structure matched with the interface of the non-refrigeration standard machine core (4) and is fixedly connected with the non-refrigeration standard machine core (4), the other end of the machine core adaptor (3) is of a second hollow cylindrical structure, the inner side wall of the second hollow cylindrical structure is provided with a plurality of inner straight surfaces (31), and each inner straight surface (31) is provided with a long slotted hole (32) extending along the optical axis direction; the first hollow cylindrical structure is inserted into the second hollow cylindrical structure, the outer diameter of the first hollow cylindrical structure is matched with the inner diameter of the second hollow cylindrical structure through aperture tolerance, and meanwhile, the outer straight surfaces (21) are in one-to-one correspondence with the inner straight surfaces (31) and are matched through tolerance; the first hollow cylindrical structure and the second hollow cylindrical structure are fixedly connected together through a plurality of screw holes (5) which are correspondingly inserted in a plurality of screw hole pairs formed by the long slotted holes (32) and the threaded holes (22).
2. The optical focal plane adjustment structure of an uncooled detector as recited in claim 1, wherein: the outer straight surfaces (21) are uniformly distributed on the outer side wall of the first hollow cylindrical structure, and the inner straight surfaces (31) are uniformly distributed on the inner side wall of the second hollow cylindrical structure.
3. The optical focal plane adjustment structure of the uncooled detector as recited in claim 2, wherein: the number of the outer straight surfaces (21) and the number of the inner straight surfaces (31) are four, and the four outer straight surfaces (21) are uniformly distributed on the upper position, the lower position, the left position and the right position of the outer side wall of the first hollow cylindrical structure; the four inner straight surfaces (31) are uniformly distributed on the upper, lower, left and right positions of the inner side wall of the second hollow cylindrical structure.
4. The optical focal plane adjustment structure of an uncooled detector as set forth in any one of claims 1 to 3, wherein: one end of the lens adapter (2) is fixedly connected with the infrared lens assembly (1) through a screw; or/and one end of the movement adapter (3) is fixedly connected with the non-refrigeration standard movement (4) through a screw.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123283390.2U CN216310368U (en) | 2021-12-24 | 2021-12-24 | Optical focal plane adjusting structure of non-refrigeration detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123283390.2U CN216310368U (en) | 2021-12-24 | 2021-12-24 | Optical focal plane adjusting structure of non-refrigeration detector |
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| CN216310368U true CN216310368U (en) | 2022-04-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824417A (en) * | 2022-11-17 | 2023-03-21 | 四川省星时代智能卫星科技有限公司 | Snapshot type satellite-borne thermal infrared optical system based on non-refrigeration detector |
-
2021
- 2021-12-24 CN CN202123283390.2U patent/CN216310368U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824417A (en) * | 2022-11-17 | 2023-03-21 | 四川省星时代智能卫星科技有限公司 | Snapshot type satellite-borne thermal infrared optical system based on non-refrigeration detector |
| CN115824417B (en) * | 2022-11-17 | 2024-06-25 | 四川省星时代智能卫星科技有限公司 | Snapshot type satellite-borne thermal infrared optical system based on uncooled detector |
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