CN214252712U - Infrared lens - Google Patents
Infrared lens Download PDFInfo
- Publication number
- CN214252712U CN214252712U CN202022469156.8U CN202022469156U CN214252712U CN 214252712 U CN214252712 U CN 214252712U CN 202022469156 U CN202022469156 U CN 202022469156U CN 214252712 U CN214252712 U CN 214252712U
- Authority
- CN
- China
- Prior art keywords
- lens
- focusing
- cam
- main
- cone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lens Barrels (AREA)
Abstract
The utility model relates to an infrared camera lens: the optical system of camera lens includes positive lens A and the positive lens B that sets up along light incident direction interval in proper order, wherein the air interval between positive lens A and the positive lens B is 69mm, the camera lens structure include main lens cone, focusing lens cone, flange, focusing lens cone suit in the main lens cone, the flange spiral shell is fixed on main lens cone rear end face, the utility model relates to a compactness, reasonable, optical system is stable, and imaging quality is good, can with long wave infrared uncooled 640 x 512,17 mu m detector adaptation, carry out live record and monitoring task, low in manufacturing cost, but large-scale production.
Description
Technical Field
The utility model relates to an infrared camera lens.
Background
With the continuous development and the increasing maturity of the uncooled detector technology, the long-wave infrared uncooled optical system is widely applied to the military and civil fields because the infrared lens has good anti-interference performance; the working distance is long in the evening; smoke penetration and haze penetration are strong; can work all weather and all day long; the method has the advantages of multi-target panoramic observation, tracking and target recognition capabilities, good target stealth resistance and the like, so that higher and higher requirements are put on the imaging quality of an optical system. However, due to a certain thermal effect of the infrared optical material and the mechanical material, severe changes in the operating temperature may have a serious effect on the optical system, such as a change in focal length, a shift in image plane, a decrease in imaging quality, and the like. Therefore, in order to adapt to different environmental temperatures, the infrared lens is required to have certain temperature self-adaptive capacity; under the condition of long-time continuous monitoring, the infrared lens is required to have the characteristics of large-scale adaptation to different weather and climate conditions and the like, so that the lens is required to have the characteristics of high resolution, strong fog penetration, low distortion rate, simple and convenient structure, reliable strength, strong stability and the like under the condition of long-time monitoring. However, most of the lenses on the market have complicated structures, high processing difficulty and cost, poor fog penetration and low resolution, and particularly, the ambient temperature is basically close to each other during night monitoring, so that the form of the monitored object is difficult to distinguish.
Disclosure of Invention
To the technical problem, the utility model provides an infrared camera lens.
The invention solves the technical problem by adopting the scheme that the infrared lens comprises the following components: the optical system of the lens comprises a positive lens A and a positive lens B which are sequentially arranged at intervals along the incident direction of light rays, wherein the air interval between the positive lens A and the positive lens B is 69 mm.
Furthermore, the lens structure comprises a main lens cone, a focusing lens cone and a connecting flange, wherein the focusing lens cone is sleeved in 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 front end of the main lens cone, a pressing ring piece A used for pressing the positive lens A is arranged in the main lens cone, the positive lens B is arranged at the rear end of the focusing lens cone, and a pressing ring piece B used for pressing the positive lens B is arranged on the focusing lens cone.
Furthermore, a focusing cam is sleeved on the outer periphery of the rear side of the main lens barrel corresponding to the focusing lens barrel, a driven gear A is arranged on the outer periphery of the front end of the focusing cam, a convex shoulder used for fixing the focusing cam is arranged on the outer periphery of the main lens barrel, the front end of the focusing cam abuts against the convex shoulder, and the rear end of the focusing cam abuts against the outer edge of the connecting flange.
Furthermore, the focusing cam drives the focusing lens barrel to move axially along the main lens barrel through the focusing guide pin, a curve groove matched with the cam guide pin is formed in the focusing cam, a linear groove matched with the cam guide top is formed in the main lens barrel, one end of the cam guide pin is fixedly connected with the rear lens barrel, and the other end of the cam guide pin extends into the curve groove through the linear groove.
Furthermore, a motor base is screwed on the periphery of the main lens cone, a motor is screwed on the motor base, a driving gear meshed with the driven gear A is installed on the motor base, and the driving gear is driven by the motor.
Furthermore, the motor cabinet be the L type, the motor cabinet includes fixed part, installation department, the installation department vertical fixation is on the tip of fixed part, the fixed part be with main lens cone periphery matched with curved surface, the fixed part spiral shell is on main lens cone periphery, the installation department on through pivot installation driving gear, the other meshing of driving gear has drive gear, the main shaft of motor runs through the installation department and drive gear suit is on the main shaft of motor.
Furthermore, the installation part is provided with a potentiometer beside the driving gear, and the shaft end of the potentiometer is provided with a potentiometer gear meshed with the driving gear.
Furthermore, a switching flange is arranged between the focusing cam and the connecting flange, and a cam pressing ring is arranged on the end face of the switching flange corresponding to the focusing cam.
Compared with the prior art, the utility model discloses following beneficial effect has: the device has the advantages of compact and reasonable design, stable optical system, good imaging quality, low manufacturing cost and large-scale production, and can be adapted to a long-wave infrared uncooled 640 x 512 and 17 mu m detector to perform live recording and monitoring tasks.
Drawings
The following describes the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an optical system of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an exploded view of the motor and motor mount;
fig. 4 is an exploded view of the lens barrel;
fig. 5 is an overall exploded view.
In the figure: 1-a main barrel; 2-positive lens A; 3-pressing ring piece A; 4-a focusing lens base; 5-a focusing cam; 6-pressing a ring by a cam; 7-positive lens B; 8-pressing ring piece B; 9-a connecting flange; 10-a transfer flange; 11-a motor; 12-a motor base; 13-a drive gear; 14-a bearing; 15-bearing cover plate; 16-a drive gear; 17-a rotating shaft; 18-potentiometer gear; 19-an image plane; 20-a potentiometer; 21-focusing guide pins; 22-a microswitch; 23-microswitch rack.
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 to 3, an infrared lens: the optical system of the lens comprises a positive lens A and a positive lens B which are sequentially arranged at intervals along the incident direction of light rays and then reach an image surface 19, wherein the air interval between the positive lens A and the positive lens B is 69 mm; the positive lens A2 and the positive lens B7 are both meniscus germanium positive lenses with the convex surface facing the object space.
In this embodiment, the optical system composed of the above lens can achieve the following technical indexes:
(1) the working wave band is as follows: 8-12 μm;
(2) focal length: f' is 75;
(3) a detector: long-wave infrared uncooled 640X 512,17um
(4) Field angle FOV: 8.3 degree x6.6 degree
(5) Relative pore diameter D/f': 1/1.0.
In this example, the lens surface parameters of the lens are as follows:
table one: optical element parameter table
Table two: data relating to aspherical surface
The aspheric expression is:
z represents the position in the direction of the optical axis, r represents the height in the perpendicular direction with respect to the optical axis, c represents the radius of curvature, k represents the conic coefficient, α4α、6α、8α、10.., represents aspheric coefficients. In the aspherical number, E-n represents ". times.10-n", for example 4.525E-005 stands for 4.525X 10-5。
In this embodiment, the lens structure includes a main lens barrel 1, a focusing lens barrel, and a connecting flange 9, where the focusing lens barrel is sleeved in the main lens barrel, and the connecting flange is screwed on the rear end face of the main lens barrel.
In this embodiment, the positive lens a is mounted in the front end of the main barrel, a clamping ring sheet a4 for pressing the positive lens a is mounted in the main barrel, the positive lens barrel B is mounted at the rear end of the focus lens barrel, and a clamping ring sheet B8 for pressing the positive lens barrel B is mounted on the focus lens barrel.
In this embodiment, a focusing cam 5 is sleeved on the outer periphery of the rear side of the main lens barrel corresponding to the focusing lens barrel, a driven gear a is arranged on the outer periphery of the front end of the focusing cam, a convex shoulder for fixing the focusing cam is arranged on the outer periphery of the main lens barrel, the front end of the focusing cam abuts against the convex shoulder, and the rear end of the focusing cam abuts against the outer edge of the connecting flange.
The focusing cam drives the focusing lens barrel to move axially along the main lens barrel through a focusing guide pin 21, a curve groove matched with the cam guide pin is formed in the focusing cam, a linear groove matched with the cam guide top is formed in the main lens barrel, one end of the cam guide pin is fixedly connected with the rear lens barrel, and the other end of the cam guide pin extends into the curve groove through the linear groove;
the focusing motor drives the focusing cam to rotate, the focusing cam drives the focusing guide nail arranged in the curve groove of the focusing cam to rotate and axially move, the linear groove in the main lens cone limits the focusing guide nail to rotate, the focusing guide nail is fixed on the focusing lens cone, and the linear motion of the focusing lens cone can be realized by the movement of the focusing guide nail.
In this embodiment, the main lens barrel is screwed with a motor base 12 on the periphery thereof, the motor base is screwed with a motor 11 thereon, and the motor base is provided with a driving gear 13 engaged with the driven gear a, and the driving gear is driven by the motor.
In this embodiment, the motor base is L-shaped, the motor base includes a fixing portion and an installation portion, the installation portion is vertically fixed on an end portion of the fixing portion, the fixing portion is a curved surface matched with the periphery of the main lens barrel, the fixing portion is screwed on the periphery of the main lens barrel, a driving gear is installed on the installation portion through a rotating shaft 17, a driving gear 16 is meshed beside the driving gear, a main shaft of the motor penetrates through the installation portion, and the driving gear is sleeved on the main shaft of the motor;
in order to prolong the service life of the motor, the driving gear is sleeved on the rotating shaft through the bearing 14, poor matching caused by abrasion between the driving gear and the rotating shaft is reduced, and then the driving gear is prevented from moving, so that the service life of the motor is prolonged, and the end part of the rotating shaft is screwed with the bearing cover plate 15 which is used for limiting the driving gear to be separated.
In this embodiment, the mounting portion is provided with a potentiometer 20 beside the driving gear, a potentiometer gear 18 engaged with the driving gear is mounted at the shaft end of the potentiometer, and the potentiometer provides position parameters for the lens stroke.
In the embodiment, an adapter flange 10 is arranged between the focusing cam and the connecting flange, and a cam pressing ring 6 is arranged on the end face of the adapter flange corresponding to the focusing cam; in order to realize that the direction of the movement can still be adjusted after the movement is fixed to the connecting flange, the connecting flange is designed with a half-moon groove adjusting direction, and due to the additional arrangement of an adjusting structure, the connecting flange is large in size and cannot be directly assembled to the main lens cone, and an extension space of the adapter flange is fixedly arranged for bearing the main lens cone and the connecting flange.
In the embodiment, in order to prevent the lens from being sealed excessively and form air pressure difference, the periphery of the focusing lens barrel is provided with air holes for balancing air pressure at two sides of the focusing lens barrel; meanwhile, in order to ensure the lens sealing, a glue groove is formed on the inner wall of the front end of the main cylinder corresponding to the pressing ring sheet A so as to facilitate the gluing and sealing.
In this embodiment, a micro switch 22 is disposed on the outer side wall of the main barrel, the micro switch is fixed on the outer side wall of the main barrel through a micro switch frame 23, and a stopper for touching the micro switch is disposed on the focusing cam.
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 (9)
1. An infrared lens, its characterized in that: the optical system of the lens comprises a positive lens A and a positive lens B which are sequentially arranged at intervals along the incident direction of light rays, wherein the air interval between the positive lens A and the positive lens B is 69 mm.
2. An infrared lens according to claim 1, characterized in that: the lens structure comprises a main lens cone, a focusing lens cone and a connecting flange, wherein the focusing lens cone is sleeved in the main lens cone, and the connecting flange is screwed on the rear end face of the main lens cone.
3. An infrared lens according to claim 2, characterized in that: the positive lens A is arranged in the front end of the main lens cone, a pressing ring piece A used for pressing the positive lens A is arranged in the main lens cone, the positive lens B is arranged at the rear end of the focusing lens cone, and the pressing ring piece B used for pressing the positive lens B is arranged on the focusing lens cone.
4. An infrared lens according to claim 3, characterized in that: the focusing device is characterized in that a focusing cam is sleeved on the outer periphery of the rear side of the main lens barrel corresponding to the focusing lens barrel, a driven gear A is arranged on the outer periphery of the front end of the focusing cam, a convex shoulder used for fixing the focusing cam is arranged on the outer periphery of the main lens barrel, the front end of the focusing cam abuts against the convex shoulder, and the rear end of the focusing cam abuts against the outer edge of the connecting flange.
5. An infrared lens according to claim 4, characterized in that: the focusing cam drives the focusing lens barrel to move axially along the main lens barrel through the focusing guide pin, a curve groove matched with the cam guide pin is formed in the focusing cam, a linear groove matched with the cam guide top is formed in the main lens barrel, one end of the cam guide pin is fixedly connected with the rear lens barrel, and the other end of the cam guide pin extends into the curve groove through the linear groove.
6. An infrared lens according to claim 4, 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, a driving gear meshed with the driven gear A is installed on the motor base, and the driving gear is driven by the motor.
7. An infrared lens according to claim 6, characterized in that: the motor cabinet be the L type, the motor cabinet include fixed part, installation department, the installation department vertical fixation is on the tip of fixed part, the fixed part be with main lens cone periphery matched with curved surface, the fixed part spiral shell is fixed in main lens cone periphery, the installation department on through pivot installation driving gear, the other meshing of driving gear has drive gear, the main shaft of motor runs through the installation department and drive gear suit is on the main shaft of motor.
8. An infrared lens according to claim 7, characterized in that: the installation department on install the potentiometre in the driving gear side, install the potentiometre gear with driving gear engaged with on the axle head of potentiometre.
9. An infrared lens according to claim 5, characterized in that: and a switching flange is arranged between the focusing cam and the connecting flange, and a cam pressing ring is arranged on the end face of the switching flange corresponding to the focusing cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022469156.8U CN214252712U (en) | 2020-10-30 | 2020-10-30 | Infrared lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022469156.8U CN214252712U (en) | 2020-10-30 | 2020-10-30 | Infrared lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214252712U true CN214252712U (en) | 2021-09-21 |
Family
ID=77730865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022469156.8U Active CN214252712U (en) | 2020-10-30 | 2020-10-30 | Infrared lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214252712U (en) |
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 |
-
2020
- 2020-10-30 CN CN202022469156.8U patent/CN214252712U/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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209388011U (en) | Pick-up lens | |
| JP4706787B2 (en) | Imaging lens, imaging unit, and portable terminal equipped with the same | |
| CN212675251U (en) | Long-wave electric focusing high-pixel high-resolution infrared lens | |
| CN108732710B (en) | Optical imaging system and electronic device | |
| KR20200084181A (en) | Image Capturing Lens System | |
| CN214252712U (en) | Infrared lens | |
| CN113433659B (en) | Optical lens, camera module, electronic equipment and automobile | |
| CN210199381U (en) | Infrared lens with detachable sealing structure | |
| CN107505690B (en) | Airborne light 120mm medium wave infrared fixed focus lens | |
| CN210090811U (en) | Compact medium-wave refrigeration infrared electric lens | |
| CN209542936U (en) | A kind of auto-manual focusing infrared lens | |
| CN108427186B (en) | Light continuous zooming uncooled thermal infrared imager | |
| CN201133963Y (en) | Day and night dual-purpose -type fixed focus lens possessing infrared night viewing function | |
| CN213517725U (en) | Large-target-surface long-focus double-view-field infrared optical lens | |
| CN209979913U (en) | Long-wave mechanical athermal focusing infrared lens | |
| CN217821039U (en) | Infrared lens of vertical optical axis manual focusing structure | |
| CN114442271A (en) | Optical system, camera module and electronic equipment | |
| CN114355596A (en) | Infrared lens | |
| CN113777755A (en) | 20mm manual focusing infrared lens and assembling method | |
| CN111722351A (en) | Long-wave electric focusing high-pixel high-resolution infrared lens and assembling method thereof | |
| CN107608061B (en) | F200mm refrigeration type medium wave infrared athermal lens | |
| CN216083253U (en) | Four-component zoom lens | |
| CN210514767U (en) | Long-wave infrared large-aperture zoom lens | |
| CN110412753B (en) | Long-wave infrared large-aperture zoom lens and focusing method thereof | |
| CN114236794B (en) | Double-view-field electric focusing infrared lens and imaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |