CN214252707U - Long-wave motor focusing infrared lens - Google Patents
Long-wave motor focusing infrared lens Download PDFInfo
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- CN214252707U CN214252707U CN202022463126.6U CN202022463126U CN214252707U CN 214252707 U CN214252707 U CN 214252707U CN 202022463126 U CN202022463126 U CN 202022463126U CN 214252707 U CN214252707 U CN 214252707U
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Abstract
The utility model relates to a long wave motor focusing infrared camera lens: including setting up positive lens A, positive lens B, the positive lens C that sets gradually along light incident direction in the camera lens structure, the air interval between positive lens A and the positive lens B is 38.4mm, and the air interval between positive lens B and the positive lens C is 8.5mm, and the air interval between positive lens A and the positive lens C is 46.9mm, the utility model relates to a rationally, compact structure, convenient to carry, high luminousness, focusing process camera lens optical axis is stable, is fit for batch planning ization production, makes things convenient for specialized production.
Description
Technical Field
The utility model relates to a long wave motor focusing infrared camera lens.
Background
The infrared lens has wide application range, can be used for infrared corresponding to special purposes, and can also be used as a common lens. In other words, the infrared correspondence lens can be flexibly matched with a conventional color camera, a black-and-white camera and a day-and-night conversion camera according to different use occasions.
In the current security monitoring market of China, infrared cameras with low illumination are mainly popular. For a low-light camera, if light and illumination are insufficient, an unclear picture is likely to be generated. And the additional installation of the infrared illuminator can relieve the problem of light fog illumination to a certain extent.
Disclosure of Invention
The utility model provides a long wave motor focusing infrared camera lens.
The invention adopts the technical scheme that a long-wave motor focusing infrared lens comprises the following components: including setting up positive lens A, positive lens B, the positive lens C that sets gradually along light incidence direction in the camera lens structure, the air interval between positive lens A and the positive lens B is 38.4mm, and the air interval between positive lens B and the positive lens C is 8.5mm, and the air interval between positive lens A and the positive lens C is 46.9 mm.
Furthermore, the lens structure comprises a main lens cone, a focusing sliding frame and a connecting flange, wherein the focusing sliding frame is sleeved at the rear side inside the main lens cone, and the connecting flange is screwed on the rear end face of the main lens cone.
Further, the positive lens A is arranged in the main lens barrel, a pressing ring piece A used for pressing the positive lens A is arranged in the main lens barrel, the positive lens B is arranged in the focusing sliding frame, the focusing sliding frame is provided with a pressing ring piece B used for pressing the positive lens B, the positive lens C is arranged in the connecting flange, and a pressing ring piece C used for pressing the positive lens C is arranged in the connecting flange.
Furthermore, a focusing cam is sleeved on the outer periphery of the rear side of the main lens barrel corresponding to the focusing carriage, a driven gear A is arranged on the outer periphery of the front end of the focusing cam, at least one corresponding guide groove is formed in the outer peripheries of the focusing cam and the main lens barrel, a focusing guide nail is arranged in the guide groove of the main lens barrel and connected with the focusing carriage and the focusing cam, and bearings are arranged between the focusing guide nail and the focusing cam and between the focusing guide nail and the main lens barrel.
Further, a motor base is screwed on the periphery of the main lens cone, a motor is screwed on the motor base, and driving gears meshed with the driven gear A are respectively installed on a main shaft of the motor.
Furthermore, a right microswitch and a left microswitch are fixed on the periphery of the main lens barrel correspondingly, and a stop block which rotates along with the focusing cam and is matched with the focusing cam to touch the microswitch is arranged on the periphery of the focusing cam.
Furthermore, the main lens cone is provided with a positioning outer convex shoulder, a positioning inner convex shoulder matched with the positioning convex shoulder is arranged in the front end of the focusing cam, the focusing cam is sleeved on the rear part of the main lens cone, the positioning inner convex shoulder at the front end of the focusing cam abuts against the positioning outer convex shoulder, the connecting flange is fixed on the end part in a threaded manner, and the outer edge of the connecting flange abuts against the rear end of the focusing cam, so that the focusing cam is fixed.
Furthermore, the main lens cone is provided with a platform surface for screwing the left and right micro switches, and the focusing sliding frame is provided with 4 grooves penetrating through the outer diameter of the sliding frame.
Compared with the prior art, the utility model discloses following beneficial effect has: the optical lens has the advantages of reasonable design, compact structure, moderate structural length of the lens, stable and non-offset optical axis and high transmittance in the focusing process, can be adapted to a long-wave infrared refrigeration 1024 x 768, 14 mu m detector in the optical design to carry out live recording and monitoring tasks, is simple to assemble, is suitable for large-scale production, and has practicability.
Drawings
The following describes the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic view of a lens structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a perspective view of the present invention;
fig. 4 is an exploded view of the present invention.
In the figure: 1-a main barrel; 2-pressing ring piece A; 3-positive lens B; 4-a focusing cam; 5-a focusing guide pin; 6-connecting a flange; 7-pressing ring piece C; 8-positive lens C; 9-a bearing; 10-a gasket; 11-a focusing carriage; 12-pressing ring piece B; 13-positive lens a; 14-a drive gear; 15-a motor base; 16-an electric machine; 17-left or right micro-switches; 18-stop block.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1-4, a long wave motor focusing infrared lens: the lens comprises a positive lens A13, a positive lens B3 and a positive lens C8 which are arranged in a lens structure in sequence along the incident direction of light rays, wherein the air interval between the positive lens A and the positive lens B is 38.4mm, the air interval between the positive lens B and the positive lens C is 8.5mm, and the air interval between the positive lens A and the positive lens C is 46.9 mm;
in this embodiment, the optical structure formed by the positive lens a13, the positive lens B3, and the positive lens C8 achieves the following optical criteria:
the working wave band is as follows: 8-12 μm; focal length: f ═ 70 mm; a detector: the long-wave infrared uncooled type is 1024 multiplied by 768 with 14 mu m; the field angle: 11.6 ° × 8.7 °; relative pore diameter D/f': 1/2.
In this embodiment, the parameters of the positive lens a13, the positive lens B3 and the positive lens C8 are as follows:
in the above table, surface numbers S1, S3, and S5 are mirror surfaces of the lenses viewed from left to right, and surface numbers S2, S4, and S6 are mirror surfaces of the lenses viewed from right to left.
In this embodiment, the lens structure includes a main lens barrel 1, a focusing carriage 11, and a connecting flange 6, the focusing carriage is sleeved on the rear side inside the main lens barrel, the connecting flange is screwed on the rear end face of the main lens barrel, the front end of the connecting flange is provided with an avoiding groove matched with the rear end of the focusing carriage, the avoiding groove can prevent the rear end of the focusing carriage from interfering with the front end of the connecting flange, and the connecting flange is screwed with the main lens barrel through 5 countersunk screws.
In this embodiment, the positive lens a is mounted in the main barrel, a clamping ring piece a2 for compressing the positive lens a is mounted in the main barrel, the positive lens B is mounted in the focusing carriage, the focusing carriage is mounted with a clamping ring piece B12 for compressing the positive lens B, the positive lens C is mounted in the connecting flange, and a clamping ring piece C7 for compressing the positive lens C is mounted in the connecting flange.
In this embodiment, a focusing cam 4 is sleeved on the outer periphery of the rear side of the main lens barrel corresponding to the focusing carriage, a driven gear a is arranged on the outer periphery of the front end of the focusing cam, at least one corresponding guide groove is arranged on the outer periphery of the focusing cam and the main lens barrel, the guide groove is spirally distributed on the main lens barrel, a focusing guide nail 5 is arranged in the guide groove of the main lens barrel, and the focusing guide nail is connected with the focusing carriage and the focusing cam; the main lens cone is connected with the focusing cam and the focusing sliding frame through stainless steel screws and stainless steel bearings, the roughness of the surface is reduced by stainless steel materials, so that the friction force among 3 parts is reduced, the guide grooves are distributed on the focusing cam and the periphery of the main lens cone at a central angle of 120 degrees, the focusing guide nails are limited to move at an angle of 120 degrees, and the guide grooves are spiral, so that the focusing guide nails can be driven to shift forwards and backwards at the same time of selection, the focusing sliding frame is driven to move forwards and backwards, the focusing is carried out, the optical axis of the lens is ensured to move forwards and backwards in the focusing process, and the optical axis of the lens is prevented from generating large shift in the moving process; meanwhile, in order to facilitate the rotation and sliding of the focusing guide nail on the guide grooves of the focusing cam and the main lens barrel, bearings 9 are arranged between the focusing guide nail and the focusing cam and between the focusing guide nail and the main lens barrel, the two bearings are sleeved on the focusing guide nail, and a gasket 10 for separating the bearings is sleeved on the focusing guide nail between the two bearings and the focusing guide nail between the bearing close to the focusing sliding frame and the focusing sliding frame.
In this embodiment, a motor base 15 is screwed on the periphery of the main lens barrel, a motor 16 is screwed on the motor base, a driving gear 14 meshed with the driven gear a is respectively installed on a main shaft of the motor, and the specific motor is a motor driven by 2-3V voltage; the side of the motor base is provided with a wire arranging hole and a wire bundling side plate, so that wire arrangement is convenient to carry out during assembly.
In this embodiment, the periphery of the main lens cone is provided with a right microswitch 17 and a left microswitch which are fixed on the corresponding screws, the periphery of the focusing cam is provided with a plurality of stop blocks which rotate along with the focusing cam and are matched with the focusing cam to touch the microswitches, the two stop blocks are correspondingly arranged, the two circular grooves are formed in the stop blocks, bolts are arranged in the circular grooves, the stop blocks are fixed on the focusing cam through the bolts, and meanwhile, the positions of the stop blocks are adjusted when the circular grooves are conveniently assembled, so that the test and the adjustment are simpler.
In this embodiment, the main lens barrel is provided with a positioning external shoulder, the front end of the focusing cam is internally provided with a positioning internal shoulder matched with the positioning shoulder, the focusing cam is sleeved on the rear part of the main lens barrel, the positioning internal shoulder at the front end of the focusing cam abuts against the positioning external shoulder, the connecting flange is screwed on the end part, and the outer edge of the connecting flange abuts against the rear end of the focusing cam, so that the fixing of the focusing cam is realized.
In the embodiment, the main lens cone is provided with a platform surface for screwing the left and right micro switches, compared with the existing pure round main lens cone, the platform surface strengthens the locking strength of the micro switches, a gasket for reducing vibration is arranged between the micro switches and the platform surface,
the focusing sliding frame is provided with 4 grooves penetrating through the outer diameter of the sliding frame, when the focusing sliding frame moves back and forth, the situation that the focusing sliding frame rebounds due to overlarge air pressure in the main lens barrel cannot be caused due to the existence of the grooves, the weight of the focusing sliding frame is reduced, the friction force between the focusing sliding frame and the inner wall of the main lens barrel is reduced, and the abrasion between a motor gear and a gear on a focusing cam is reduced.
In this embodiment, during assembly, (1) the main barrel, the focusing cam, and the focusing carriage are fixed and connected in sequence by the focusing guide pins; (2) fixing the connecting flange by using a countersunk head screw; (3) placing the two micro switches on the platform surfaces of the two micro switches of the main lens barrel respectively and screwing the two micro switches; (4) attaching a motor lock to a motor base of the main barrel; (5) locking a motor gear on a motor rotating shaft and fixing the motor gear on a motor by using AB glue; (6) horizontally placing the positive lens C on the connecting flange and fixing the positive lens C by using a pressing ring sheet C; (7) the positive lens B is horizontally assembled into the main lens cone and is fixed by a pressing ring piece B; (8) finally, the positive lens A is horizontally assembled into the main lens barrel and is fixed by the pressing ring piece A.
In the embodiment, the device can be matched with a long-wave infrared uncooled 1024X 768, 14-micron detector to perform live recording and monitoring tasks.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the orientation or positional relationship indicated in any of the above-mentioned technical solutions of the present disclosure for indicating positional relationship, such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of describing the present disclosure, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present disclosure, and the term used for indicating shape applied in any of the above-mentioned technical solutions of the present disclosure includes a shape similar, analogous or approximate thereto unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (8)
1. The utility model provides a long wave motor focusing infrared lens which characterized in that: including setting up positive lens A, positive lens B, the positive lens C that sets gradually along light incidence direction in the camera lens structure, the air interval between positive lens A and the positive lens B is 38.4mm, and the air interval between positive lens B and the positive lens C is 8.5mm, and the air interval between positive lens A and the positive lens C is 46.9 mm.
2. The long wave motor focusing infrared lens of claim 1, characterized in that: the lens structure comprises a main lens cone, a focusing sliding frame and a connecting flange, wherein the focusing sliding frame is sleeved on the rear side inside the main lens cone, and the connecting flange is screwed on the rear end face of the main lens cone.
3. The long wave motor focusing infrared lens of claim 2, characterized in that: the positive lens A is arranged in the main lens barrel, a pressing ring piece A used for pressing the positive lens A is arranged in the main lens barrel, the positive lens B is arranged in the focusing sliding frame, the focusing sliding frame is provided with a pressing ring piece B used for pressing the positive lens B, the positive lens C is arranged in the connecting flange, and a pressing ring piece C used for pressing the positive lens C is arranged in the connecting flange.
4. The long wave motor focusing infrared lens of claim 3, characterized in that: the focusing mechanism is characterized in that a focusing cam is sleeved on the periphery of the rear side of the main lens barrel corresponding to the focusing sliding frame, a driven gear A is arranged on the periphery of the front end of the focusing cam, at least one corresponding guide groove is formed in the peripheries of the focusing cam and the main lens barrel, a focusing guide nail is arranged in the guide groove of the main lens barrel and connected with the focusing sliding frame and the focusing cam, and bearings are arranged between the focusing guide nail and the focusing cam and between the focusing guide nail and the main lens barrel.
5. The long wave motor focusing infrared lens of claim 3, characterized in that: the periphery of the main lens cone is fixedly screwed with a motor base, the motor base is fixedly screwed with a motor, and a main shaft of the motor is respectively provided with a driving gear which is meshed with the driven gear A.
6. The long wave motor focusing infrared lens of claim 4, characterized in that: the periphery of the main lens barrel is correspondingly screwed with a right microswitch and a left microswitch, and the periphery of the focusing cam is provided with a stop block which rotates along with the focusing cam and is matched with the contact microswitch.
7. The long wave motor focusing infrared lens of claim 4, characterized in that: the main lens cone is provided with a positioning outer convex shoulder, a positioning inner convex shoulder matched with the positioning convex shoulder is arranged in the front end of the focusing cam, the focusing cam is sleeved on the rear portion of the main lens cone, the positioning inner convex shoulder at the front end of the focusing cam abuts against the positioning outer convex shoulder, the connecting flange is screwed on the end portion, the outer edge of the connecting flange abuts against the rear end of the focusing cam, and the focusing cam is fixed.
8. The long wave motor focusing infrared lens of claim 3, characterized in that: the main lens cone is provided with a platform surface for screwing the left and right micro switches, and the focusing sliding frame is provided with 4 grooves penetrating the outer diameter of the sliding frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463126.6U CN214252707U (en) | 2020-10-30 | 2020-10-30 | Long-wave motor focusing infrared lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463126.6U CN214252707U (en) | 2020-10-30 | 2020-10-30 | Long-wave motor focusing infrared lens |
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| Publication Number | Publication Date |
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| CN214252707U true CN214252707U (en) | 2021-09-21 |
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| CN202022463126.6U Active CN214252707U (en) | 2020-10-30 | 2020-10-30 | Long-wave motor focusing infrared lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355596A (en) * | 2021-12-31 | 2022-04-15 | 福建福光股份有限公司 | Infrared lens |
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2020
- 2020-10-30 CN CN202022463126.6U patent/CN214252707U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355596A (en) * | 2021-12-31 | 2022-04-15 | 福建福光股份有限公司 | Infrared lens |
| CN114355596B (en) * | 2021-12-31 | 2023-08-11 | 福建福光股份有限公司 | Infrared lens |
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