CN110376726A - Manual focusing Indoor Video infrared thermal imaging wide-angle lens and its working method - Google Patents
Manual focusing Indoor Video infrared thermal imaging wide-angle lens and its working method Download PDFInfo
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- CN110376726A CN110376726A CN201910665271.1A CN201910665271A CN110376726A CN 110376726 A CN110376726 A CN 110376726A CN 201910665271 A CN201910665271 A CN 201910665271A CN 110376726 A CN110376726 A CN 110376726A
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- lens
- positive lens
- negative lens
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- positive
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
Abstract
The present invention relates to a kind of manual focusing Indoor Video infrared thermal imaging wide-angle lens and its working methods, it is characterised in that: is successively arranged negative lens A, negative lens B, positive lens C and positive lens D along object plane to image planes in the optical system of the camera lens；Airspace between the negative lens A and negative lens B is 9.79mm, and the airspace between the negative lens B and positive lens C is 11.87mm, and the airspace between the positive lens C and positive lens D is 9.4mm；(1) structure of the invention is simple, easy to assembly, suitable for mass production；(2) there is high imaging target surface and field angle, be suitble to large area detection monitoring；(3) compact-sized, cost of manufacture is cheap, and proper scaleization is promoted.
Description
Technical field:
The present invention provides a kind of manual focusing Indoor Video infrared thermal imaging wide-angle lens and its working methods, belong to camera lens
Field.
Background technique:
Infrared lens have good in anti-interference performance；Night operating distance is remote；It is strong to penetrate flue dust, haze ability；It can round-the-clock, whole day
When work；Have many advantages, such as the observation of multiple target panorama, tracking and target identification ability and the ability of good anti-target stealth.But
Be infrared lens material therefor thermal refractive index coefficient it is larger, under different environment temperatures, optical material and mechanical material
Generation is expanded with heat and contract with cold, and the refractive index of optical material can also change with temperature, and then sends out the optimum image plane of optical system
It is raw to deviate, quality of optical imaging is reduced, so that image is smudgy, and contrast decline, the final imaging performance for influencing camera lens.
Summary of the invention:
In place of against the above deficiency, a kind of manual focusing Indoor Video infrared thermal imaging wide-angle is provided
Camera lens and its working method, the manual focusing Indoor Video are used for the camera lens of Indoor Video with infrared thermal imaging wide-angle lens, make
It is tended towards stability with environment temperature, considers to set out for cost control and camera lens are universal, complete difference using the mode of manual focusing
The detection of temperature environment and different object distances, cost performance are high.
Manual focusing Indoor Video infrared thermal imaging wide-angle lens of the present invention, it is characterised in that: the optics of the camera lens
Negative lens A, negative lens B, positive lens C and positive lens D are successively arranged along object plane to image planes in system；The negative lens A and negative saturating
Airspace between mirror B is 9.79mm, and the airspace between the negative lens B and positive lens C is 11.87mm, it is described just
Airspace between lens C and positive lens D is 9.4mm；
The specific performance parameter for the optical texture that negative lens A, negative lens B, positive lens C and positive lens D are formed are as follows:
(1) service band: 8 μm -12 μm；
(2) focal length: f '=7.25mm；
(3) it detector: 640 × 512,20 μm of LWIR Uncooled type and following can all be adapted to；
(4) field angle: 110 °；
(5) relative aperture D/ f ': 1/1.0.
Further, above-mentioned negative lens A, negative lens B, positive lens C and positive lens D parameter list:
Further, above-mentioned camera lens includes body tube, is located at the main cylinder of body tube periphery and is located at the outer cover of main cylinder back periphery,
It is successively arranged negative lens A, negative lens B, positive lens C and positive lens D from object plane to image planes in the body tube body, in negative lens A
Between negative lens B be equipped with AB spacer ring, between negative lens B and positive lens C be equipped with BC spacer ring, positive lens C and positive lens D it
Between be equipped with CD spacer ring, to limit the distance between lens.
Further, it is connected through a screw thread between above-mentioned outer cover and main cylinder, in the middle part of the periphery wall of main cylinder and outer cover front end
Water proof ring is installed between inner wall.
Further, above-mentioned main cylinder front end is equipped with garland structure, to facilitate focus operations；Connection between outer cover and main cylinder
Screw thread is multiple thread, realizes the switching of close-shot office to infinity to guarantee focusing in 180 °；Outer cover is equipped with limited screw
And locking nail, it is locked after controlling focusing range and focusing, makes image stabilization.
Further, above-mentioned negative lens A, negative lens B, positive lens C and positive lens D are germanium material, lens optical dot matrix
Array is 640*512, and pixel dimension 20um, whole lens imaging field angle is up to 110 °.
Further, above-mentioned outer cover rear end periphery wall is machined with the hickey of M34x0.75-6g, with camera phase
Match.
The working method of manual focusing Indoor Video infrared thermal imaging wide-angle lens of the present invention, it is characterised in that: described
Negative lens A, negative lens B, positive lens C and positive lens D are successively arranged along object plane to image planes in the optical system of camera lens；It is described negative saturating
Airspace between mirror A and negative lens B is 9.79mm, and the airspace between the negative lens B and positive lens C is
11.87mm, the airspace between the positive lens C and positive lens D is 9.4mm；
The specific performance parameter for the optical texture that negative lens A, negative lens B, positive lens C and positive lens D are formed are as follows:
(1) service band: 8 μm -12 μm；
(2) focal length: f '=7.25mm；
(3) it detector: 640 × 512,20 μm of LWIR Uncooled type and following can all be adapted to；
(4) field angle: 110 °；
(5) relative aperture D/ f ': 1/1.0；
When work, negative lens A, negative lens B, positive lens C and positive lens D convert high/low temperature and close-shot to away from required amount of movement
Body tube, main cylinder and outer cover are mobile to compensate, and drive the eyeglass on body tube mobile by main cylinder of focusing, realize different temperatures item
To the detection of different distance under part.
Compared with prior art, the present invention has with remarkable advantage: (1) structure is simple, easy to assembly, is suitble to batch raw
It produces；(2) there is high imaging target surface and field angle, be suitble to large area detection monitoring；(3) compact-sized, cost of manufacture is cheap, fits
Suitable large-scale promotion；4) guarantee it is compact-sized under the premise of, adopt a series of measures, improve camera lens vibration resistance, impact
Ability；(5) body tube uses integrated design, has good sealing performance；It can have been carried out just in lens construction design
Degree calculates, suitably increase wall thickness, improves intrinsic frequency, improves the vibration resistance of camera lens, guarantee the requirement of system；It is additional anti-
The use of hydrosphere ensure that the sealing performance of camera lens, can achieve IP67.(6) hand adjustment structure makes camera lens adapt to different distance
Detection monitoring.
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Detailed description of the invention:
Fig. 1 is the schematic diagram of optical system of the embodiment of the present invention；
Fig. 2 is the optical lens structural schematic diagram of the embodiment of the present invention；
In figure: pressing ring before 1-, 2- water proof ring, 3- limited screw, 4- body tube, 5- outer cover, 6-CD spacer ring, 7-BC spacer ring, 8- lock
It marks closely, the main cylinder of 9-, 10-AB spacer ring, A- negative lens A, B- negative lens B, C- positive lens C, D- positive lens D.
Specific embodiment:
The present invention is further described with reference to the accompanying drawings and detailed description.
Manual focusing Indoor Video infrared thermal imaging wide-angle lens of the present invention, along object plane in the optical system of the camera lens
Negative lens A, negative lens B, positive lens C and positive lens D are successively arranged to image planes；Air between the negative lens A and negative lens B
Interval is 9.79mm, and the airspace between the negative lens B and positive lens C is 11.87mm, the positive lens C and positive lens D
Between airspace be 9.4mm；
That is the optical surface of negative lens A towards object space and image space is convex to object space；The optical surface of negative lens B towards object space and image space is equal
It is convex to object space；The optical surface of positive lens D towards object space and image space is convex to image space；The optical surface of positive lens C towards object space is convex to
Object space is convex to image space towards the optical surface of image space.
The specific performance parameter for the optical texture that negative lens A, negative lens B, positive lens C and positive lens D are formed are as follows:
(1) service band: 8 μm -12 μm；
(2) focal length: f '=7.25mm；
(3) it detector: 640 × 512,20 μm of LWIR Uncooled type and following can all be adapted to；
(4) field angle: 110 °；
Relative aperture D/ f ': 1/1.0.Compared to similar optics without thermalization camera lens, camera lens cost is greatly reduced the present invention.Phase
Than in similar machinery, without thermalization camera lens, camera lens reduces two layers without thermalization structure, and overall structure is smaller.
In order to design rationally, above-mentioned negative lens A, negative lens B, positive lens C and positive lens D parameter list:
Further, in order to be easy to operate, above-mentioned camera lens includes body tube 4, the main cylinder 9 for being located at body tube periphery and is located at master
The outer cover 5 of cylinder back periphery, in the body tube body from object plane to image planes be successively arranged negative lens A, negative lens B, positive lens C and
Positive lens D is equipped with AB spacer ring 10 between negative lens A and negative lens B, and BC spacer ring 7 is equipped between negative lens B and positive lens C,
It is equipped with CD spacer ring 6, between positive lens C and positive lens D to limit the distance between lens.
Further, it is connected through a screw thread between above-mentioned outer cover and main cylinder, in the middle part of the periphery wall of main cylinder and outer cover front end
Water proof ring 2 is installed between inner wall, is equipped with preceding pressing ring 1 in body tube front cover.
Further, above-mentioned main cylinder front end is equipped with garland structure, to facilitate focus operations；Connection between outer cover and main cylinder
Screw thread is multiple thread, realizes the switching of close-shot office to infinity to guarantee focusing in 180 °；Outer cover is equipped with limited screw 3
With locking nail 8, it is locked after controlling focusing range and focusing, makes image stabilization.
Further, above-mentioned negative lens A, negative lens B, positive lens C and positive lens D are germanium material, lens optical dot matrix
Array is 640*512, and pixel dimension 20um, whole lens imaging field angle is up to 110 °.
Further, above-mentioned outer cover rear end periphery wall is machined with the hickey of M34x0.75-6g, with camera phase
Match.
The working method of manual focusing Indoor Video infrared thermal imaging wide-angle lens of the present invention, it is characterised in that: described
Negative lens A, negative lens B, positive lens C and positive lens D are successively arranged along object plane to image planes in the optical system of camera lens；It is described negative saturating
Airspace between mirror A and negative lens B is 9.79mm, and the airspace between the negative lens B and positive lens C is
11.87mm, the airspace between the positive lens C and positive lens D is 9.4mm；
The specific performance parameter for the optical texture that negative lens A, negative lens B, positive lens C and positive lens D are formed are as follows:
(1) service band: 8 μm -12 μm；
(2) focal length: f '=7.25mm；
(3) it detector: 640 × 512,20 μm of LWIR Uncooled type and following can all be adapted to；
(4) field angle: 110 °；
(5) relative aperture D/ f ': 1/1.0；
When work, negative lens A, negative lens B, positive lens C and positive lens D convert high/low temperature and close-shot to away from required amount of movement
Body tube, main cylinder and outer cover are mobile to compensate, and drive the eyeglass on body tube mobile by main cylinder of focusing, realize different temperatures item
To the detection of different distance under part.
Use environment of the present invention is interior, and working environment is relatively stable, is the camera lens of no athermal function, thus will
Lens and cost all reduce.The focusing of different object distances under different operating environment is completed by manual focusing, it then will locking
Nail is locked to avoid the shaking of camera lens in use, has ensured the stability of imaging.
Compared with prior art, the present invention has with remarkable advantage: (1) structure is simple, easy to assembly, is suitble to batch raw
It produces；(2) there is high imaging target surface and field angle, be suitble to large area detection monitoring；(3) compact-sized, cost of manufacture is cheap, fits
Suitable large-scale promotion；4) guarantee it is compact-sized under the premise of, adopt a series of measures, improve camera lens vibration resistance, impact
Ability；(5) body tube uses integrated design, has good sealing performance；It can have been carried out just in lens construction design
Degree calculates, suitably increase wall thickness, improves intrinsic frequency, improves the vibration resistance of camera lens, guarantee the requirement of system；It is additional anti-
The use of hydrosphere ensure that the sealing performance of camera lens, can achieve IP67.(6) hand adjustment structure makes camera lens adapt to different distance
Detection monitoring.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of manual focusing Indoor Video infrared thermal imaging wide-angle lens, it is characterised in that: the optical system of the camera lens
It is middle to be successively arranged negative lens A, negative lens B, positive lens C and positive lens D along object plane to image planes；The negative lens A and negative lens B it
Between airspace be 9.79mm, the airspace between the negative lens B and positive lens C is 11.87mm, the positive lens C
Airspace between positive lens D is 9.4mm；
The specific performance parameter for the optical texture that negative lens A, negative lens B, positive lens C and positive lens D are formed are as follows:
Service band: 8 μm -12 μm；
Focal length: f '=7.25mm；
Detector: it 640 × 512,20 μm of LWIR Uncooled type and following can all be adapted to；
Field angle: 110 °；
Relative aperture D/ f ': 1/1.0.
2. manual focusing Indoor Video infrared thermal imaging wide-angle lens according to claim 1, it is characterised in that: described negative
Lens A, negative lens B, positive lens C and positive lens D parameter list:
。
3. manual focusing Indoor Video infrared thermal imaging wide-angle lens according to claim 1, it is characterised in that: the mirror
Head includes body tube, is located at the main cylinder of body tube periphery and is located at the outer cover of main cylinder back periphery, from object in the body tube body
Face to image planes are successively arranged negative lens A, negative lens B, positive lens C and positive lens D, and AB is equipped between negative lens A and negative lens B
Spacer ring is equipped with BC spacer ring between negative lens B and positive lens C, and CD spacer ring is equipped between positive lens C and positive lens D, to limit
The distance between lens.
4. manual focusing Indoor Video infrared thermal imaging wide-angle lens according to claim 3, it is characterised in that: described
It is connected through a screw thread between outer cover and main cylinder, water proof ring is installed between the inner wall of outer cover front end in the middle part of the periphery wall of main cylinder.
5. manual focusing Indoor Video infrared thermal imaging wide-angle lens according to claim 4, it is characterised in that: the master
Cylinder front end is equipped with garland structure, to facilitate focus operations；Connection screw thread between outer cover and main cylinder is multiple thread, to guarantee to adjust
Coke realizes the switching of close-shot office to infinity in 180 °；Outer cover be equipped with limited screw and locking nail, control focusing range with
And be locked after focusing, make image stabilization.
6. manual focusing Indoor Video infrared thermal imaging wide-angle lens according to claim 5, it is characterised in that: described negative
Lens A, negative lens B, positive lens C and positive lens D are germanium materials, and lens optical dot-matrix array is 640*512, and pixel dimension is
20um, whole lens imaging field angle is up to 110 °.
7. manual focusing Indoor Video infrared thermal imaging wide-angle lens according to claim 6, it is characterised in that: described outer
Cover rear end periphery wall is machined with the hickey of M34x0.75-6g, to match with camera.
8. a kind of working method of manual focusing Indoor Video infrared thermal imaging wide-angle lens, it is characterised in that: the camera lens
Optical system in along object plane to image planes be successively arranged negative lens A, negative lens B, positive lens C and positive lens D；The negative lens A
Airspace between negative lens B is 9.79mm, and the airspace between the negative lens B and positive lens C is 11.87mm,
Airspace between the positive lens C and positive lens D is 9.4mm；
The specific performance parameter for the optical texture that negative lens A, negative lens B, positive lens C and positive lens D are formed are as follows:
Service band: 8 μm -12 μm；
Focal length: f '=7.25mm；
Detector: it 640 × 512,20 μm of LWIR Uncooled type and following can all be adapted to；
Field angle: 110 °；
Relative aperture D/ f ': 1/1.0；
When work, negative lens A, negative lens B, positive lens C and positive lens D convert high/low temperature and close-shot to away from required amount of movement
Body tube, main cylinder and outer cover are mobile to compensate, and drive the eyeglass on body tube mobile by main cylinder of focusing, realize different temperatures item
To the detection of different distance under part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910665271.1A CN110376726A (en) | 2019-07-23 | 2019-07-23 | Manual focusing Indoor Video infrared thermal imaging wide-angle lens and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910665271.1A CN110376726A (en) | 2019-07-23 | 2019-07-23 | Manual focusing Indoor Video infrared thermal imaging wide-angle lens and its working method |
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| Publication Number | Publication Date |
|---|---|
| CN110376726A true CN110376726A (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910665271.1A Pending CN110376726A (en) | 2019-07-23 | 2019-07-23 | Manual focusing Indoor Video infrared thermal imaging wide-angle lens and its working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394469A (en) * | 2020-12-01 | 2021-02-23 | 天津津航技术物理研究所 | High-precision mechanical passive athermalization all-silicon lens |
-
2019
- 2019-07-23 CN CN201910665271.1A patent/CN110376726A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394469A (en) * | 2020-12-01 | 2021-02-23 | 天津津航技术物理研究所 | High-precision mechanical passive athermalization all-silicon lens |
| CN112394469B (en) * | 2020-12-01 | 2023-03-10 | 天津津航技术物理研究所 | High-precision mechanical passive athermalization all-silicon lens |
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