CN205507188U - F5mm large relative aperture machinery passive form does not have camera lens of heating - Google Patents
F5mm large relative aperture machinery passive form does not have camera lens of heating Download PDFInfo
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- CN205507188U CN205507188U CN201620088674.6U CN201620088674U CN205507188U CN 205507188 U CN205507188 U CN 205507188U CN 201620088674 U CN201620088674 U CN 201620088674U CN 205507188 U CN205507188 U CN 205507188U
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Abstract
The utility model relates to a F5mm large relative aperture machinery passive form does not have camera lens of heating, including optical system and mechanical structure, negative lens A, diaphragm, positive lens B, negative lens C and positive lens D have been set gradually along the light incidence direction among the optical system of camera lens, the mechanical structure of camera lens includes a primary mirror section of thick bamboo, it carries out the telescopic machanism group of stretching out and drawing back to link firmly the principle that is used for the location to guarantee the accessible expend with heat and contract with cold of distance through the spacing collar on the primary mirror section of thick bamboo. The utility model discloses possess large relative aperture, big visual field, mechanical passive form do not have heat with characteristics such as high permeability, in optical design, choose equitable optical structure, the rational distribution focal power relies on different coefficient of expansion's the whole group's lens of lens cone material combinations drive to move with the drift of retrieved image face, and realization temperature adaptive machinery passive form does not have the characteristics of heating.
Description
Technical field
This utility model relates to f5mm object lens of large relative aperture machinery passive type without transconversion into heat camera lens.
Background technology
It is remote that infrared imaging system has night operating distance；Good in anti-interference performance；Good concealment；Image is directly perceived, it is easy to observe；Environment suitability is better than visible ray；Penetrate flue dust, haze ability strong；Can round-the-clock, round-the-clock work；There is multiple target panorama observe, follow the trail of and the advantage such as target recognition ability and good anti-target stealth ability.Therefore infrared imagery technique becomes a focus of current design development tracking system.Compared with refrigeration type infrared detector, the sensitivity of non-refrigerated infrared detector is relatively low, thus requires that the relative aperture of optical system is the biggest.Additionally, also require that infrared optical system has big visual field to obtain the infrared image of large scene.
Due to the infrared optical material sensitive to temperature, the change of operating temperature can make the external structure etc. of the refractive index of optical material, the size dough-making powder shape of optical element and system that corresponding change all occurs, make optical system produce out of focus and other aberration, cause optical system imaging quality to be deteriorated and systematic function reduces.In order to adapt to special application scenario, also require that camera lens adapts to adverse circumstances, there is temperature self-adaptation ability, and this type of camera lens kind is less in the market, it is impossible to meet the demand in market.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of simple in construction, can realize LWIR Uncooled type short focus, object lens of large relative aperture, big visual field f5mm object lens of large relative aperture machinery passive type without transconversion into heat camera lens.
To achieve these goals, a technical scheme of the present utility model is: f5mm object lens of large relative aperture machinery passive type is without transconversion into heat camera lens, including optical system and frame for movement, the optical system of described camera lens is disposed with minus lens A, diaphragm, plus lens B, minus lens C and plus lens D along light direction, the frame for movement of described camera lens includes body tube, described body tube is fixed with by spacing collar and carries out, by the principle expanded with heat and contract with cold, the telescoping mechanism group stretched for position assurance distance.
Further, the airspace between described minus lens A and diaphragm is 17mm.
Further, the airspace between described diaphragm and plus lens B is 2.5mm.
Further, the airspace between described plus lens B and minus lens C is 9mm.
Further, the airspace between described minus lens C and plus lens D is 6mm.
Further, it is positioned at front end in described body tube and is equipped with plus lens A, it is positioned at rear end in described body tube and is equipped with plus lens B, minus lens C and plus lens D, it is provided with the BC spacer ring for ensureing the air clearance between plus lens B and minus lens C between described plus lens B and minus lens C, between described minus lens C and plus lens D, is provided with the CD spacer ring for ensureing the air clearance between minus lens C and plus lens D.
Further, the front end of described body tube is positioned at the side of minus lens A and is provided with the front trim ring for installing fixing minus lens A, and the rear end of described body tube is positioned at the side of plus lens D and is provided with the rear trim ring for installing fixing plus lens D.
Further, the outer circumferential side of described body tube is arranged with sleeve, the compensation shell fragment for compensating displacement it is provided with between described body tube and sleeve, the outer circumferential side of described sleeve is arranged with outer housing, it is provided with the O RunddichtringO II for sealing between described sleeve and body tube, between described sleeve and outer housing, is provided with the O RunddichtringO I for sealing.
Further, the regulation screw for focusing it is provided with on described sleeve, described telescoping mechanism group includes that the expansion ring being made up of special material, one end of described body tube are extended with flange, and the other end of body tube is arranged with for card and the spacing collar of installing expansion ring.
Compared with prior art, this utility model has the advantage that (1), in optical design, uses and counter takes the photograph remote type objective lens arrangement, makes the short burnt system of this object lens of large relative aperture, big visual field have good imaging effect；(2) in optical design, the focal power of each eyeglass of reasonable distribution is excellent to ensure optical system picture element；(3) in optical design, using two even aspheric surfaces to balance the aberration of system so that optical system simple and compact for structure, image quality is good；(4) in optical design, moved by whole group of lens and realize high/low temperature and distance away from compensation, to ensure camera lens use requirement under high temperature and low temperature environment；(5) body tube uses integrated design, has good sealing property；Rigidity Calculation can be carried out in lens construction designs, suitably increase wall thickness, improve natural frequency, improve the vibration resistance of camera lens, it is ensured that the use requirement of system；Meanwhile, each position that seals uses O RunddichtringO to seal, it is ensured that the sealing property of camera lens.
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the optical system diagram of this utility model embodiment；
Fig. 2 is the organigram of this utility model embodiment.
Labelling in Fig. 1: A minus lens A, B plus lens B, C minus lens C, D plus lens D, E-diaphragm, F-image planes；
Labelling in Fig. 2: 1-outer housing, 2-sleeve, 3-regulates screw, 4-O RunddichtringO I, 5-spacing collar, trim ring after 6-, 7-plus lens D, 8-CD spacer ring, 9-minus lens C, 10-BC spacer ring, 11-expansion ring, 12-plus lens B, 13-body tube, 14-O RunddichtringO II, trim ring before 15-, 16-minus lens A, 17-compensate shell fragment.
Detailed description of the invention
In order to allow features described above of the present utility model and advantage become apparent, special embodiment below, and coordinate accompanying drawing, it is described in detail below.
As shown in Figure 1 and 2, f5mm object lens of large relative aperture machinery passive type is without transconversion into heat camera lens, including optical system and frame for movement, the optical system of described camera lens is disposed with minus lens A, diaphragm, plus lens B, minus lens C and plus lens D along light direction, the frame for movement of described camera lens includes body tube 13, described body tube 13 is fixed with by spacing collar 5 and carries out, by the principle expanded with heat and contract with cold, the telescoping mechanism group stretched for position assurance distance.
In the present embodiment, the airspace between described minus lens A and diaphragm E is 17mm.
In the present embodiment, the airspace between described diaphragm E and plus lens B is 2.5mm.
In the present embodiment, the airspace between described plus lens B and minus lens C is 9mm.
In the present embodiment, the airspace between described minus lens C and plus lens D is 6mm.
In the present embodiment, it is positioned at front end in described body tube 13 and is equipped with plus lens A, it is positioned at rear end in described body tube 13 and is equipped with plus lens B, minus lens C and plus lens D, it is provided with the BC spacer ring 10 for ensureing the air clearance between plus lens B and minus lens C between described plus lens B and minus lens C, between described minus lens C and plus lens D, is provided with the CD spacer ring 8 for ensureing the air clearance between minus lens C and plus lens D.
In the present embodiment, the front end of described body tube 13 is positioned at the side of minus lens A and is provided with the front trim ring 15 for installing fixing minus lens A, and the rear end of described body tube 13 is positioned at the side of plus lens D and is provided with the rear trim ring 6 for installing fixing plus lens D.
In the present embodiment, the outer circumferential side of described body tube 13 is arranged with sleeve 2, the compensation shell fragment 17 for compensating displacement it is provided with between described body tube 13 and sleeve 2, the outer circumferential side of described sleeve 2 is arranged with outer housing 1, it is provided with the O RunddichtringO II 14 for sealing between described sleeve 2 and body tube 13, between described sleeve 2 and outer housing 1, is provided with the O RunddichtringO I 4 for sealing.
In the present embodiment, the regulation screw 3 for focusing it is provided with on described sleeve 2, described telescoping mechanism group includes that the expansion ring 11 being made up of special material, one end of described body tube 13 are extended with flange, and the other end of body tube is arranged with for card and the spacing collar 5 of installing expansion ring 11.
In the present embodiment, when camera lens is heated, telescoping mechanism group starts to stretch by the principle expanded with heat and contract with cold, and whole group of camera lens synchronizes to be subjected to displacement；After whole group of camera lens is subjected to displacement, the displacement of generation of being expanded with heat and contract with cold by the compensation shell fragment 17 compensation regulation telescoping mechanism group between body tube 13 and sleeve 2.
In the present embodiment, reasonable distribution focal power in optical design so that whole group of lens move less distance and realize high/low temperature and distance away from compensation；Cooperated by the many layer mirror barrel structure of different heat expansion coefficient in structure designs, whole group of lens are driven to move, realize high/low temperature self adaptation without transconversion into heat technology, calculate according to optical design, this f5mm object lens of large relative aperture machinery passive type is without transconversion into heat camera lens, whole group of lens moving is-0.1mm/+0.07mm, and whole group of lens are negative away from detector, is just near detector.
In the present embodiment, the structure body tube 13 of described camera lens uses integrated design, described body tube 13 has good sealing property and intensity, ensure processing, debug convenience, Rigidity Calculation can have been carried out in structure designs, suitably increase wall thickness, improve natural frequency, thus improve resistance to shock.
In the present embodiment, in the present embodiment, the optical system being made up of above-mentioned lens set has reached following technical specification: (1) service band: 8 μm-12 μm；(2) focal length: f '=5mm；(3) detector: LWIR Uncooled type 384 × 288,25 μm；(4) angle of visual field: 90 ° × 71.8 °；(5) relative aperture D/ f ': 1/1；(6) optics volume: 53mm × 25.6mm × 25.6mm(length × width × height).
The foregoing is only preferred embodiment of the present utility model, all impartial changes done according to this utility model claim and modification, all should belong to covering scope of the present utility model.
Claims (9)
1.f5mm object lens of large relative aperture machinery passive type is without transconversion into heat camera lens, it is characterized in that: include optical system and frame for movement, the optical system of described camera lens is disposed with minus lens A, diaphragm, plus lens B, minus lens C and plus lens D along light direction, the frame for movement of described camera lens includes body tube, described body tube is fixed with by spacing collar and carries out, by the principle expanded with heat and contract with cold, the telescoping mechanism group stretched for position assurance distance.
F5mm object lens of large relative aperture machinery passive type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that: the airspace between described minus lens A and diaphragm is 17mm.
F5mm object lens of large relative aperture machinery passive type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that: the airspace between described diaphragm and plus lens B is 2.5mm.
F5mm object lens of large relative aperture machinery passive type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that: the airspace between described plus lens B and minus lens C is 9mm.
F5mm object lens of large relative aperture machinery passive type the most according to claim 1 is without transconversion into heat camera lens, it is characterised in that: the airspace between described minus lens C and plus lens D is 6mm.
F5mm object lens of large relative aperture machinery passive type the most according to claim 1 is without transconversion into heat camera lens, it is characterized in that: be positioned at front end in described body tube and be equipped with plus lens A, it is positioned at rear end in described body tube and is equipped with plus lens B, minus lens C and plus lens D, it is provided with the BC spacer ring for ensureing the air clearance between plus lens B and minus lens C between described plus lens B and minus lens C, between described minus lens C and plus lens D, is provided with the CD spacer ring for ensureing the air clearance between minus lens C and plus lens D.
F5mm object lens of large relative aperture machinery passive type the most according to claim 1 is without transconversion into heat camera lens, it is characterized in that: the front end of described body tube is positioned at the side of minus lens A and is provided with the front trim ring for installing fixing minus lens A, the rear end of described body tube is positioned at the side of plus lens D and is provided with the rear trim ring for installing fixing plus lens D.
F5mm object lens of large relative aperture machinery passive type the most according to claim 1 is without transconversion into heat camera lens, it is characterized in that: the outer circumferential side of described body tube is arranged with sleeve, the compensation shell fragment for compensating displacement it is provided with between described body tube and sleeve, the outer circumferential side of described sleeve is arranged with outer housing, it is provided with the O RunddichtringO II for sealing between described sleeve and body tube, between described sleeve and outer housing, is provided with the O RunddichtringO I for sealing.
F5mm object lens of large relative aperture machinery passive type the most according to claim 8 is without transconversion into heat camera lens, it is characterized in that: on described sleeve, be provided with the regulation screw for focusing, described telescoping mechanism group includes expansion ring, one end of described body tube is extended with flange, and the other end of body tube is arranged with for card and the spacing collar of installing expansion ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088674.6U CN205507188U (en) | 2016-01-29 | 2016-01-29 | F5mm large relative aperture machinery passive form does not have camera lens of heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088674.6U CN205507188U (en) | 2016-01-29 | 2016-01-29 | F5mm large relative aperture machinery passive form does not have camera lens of heating |
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| CN205507188U true CN205507188U (en) | 2016-08-24 |
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| CN201620088674.6U Active CN205507188U (en) | 2016-01-29 | 2016-01-29 | F5mm large relative aperture machinery passive form does not have camera lens of heating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467549A (en) * | 2016-01-29 | 2016-04-06 | 福建福光股份有限公司 | F5mm large relative aperture mechanical passive athermalization lens and compensation adjusting method thereof |
| CN106443938A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | High-transmittance type far infrared long wave focusing lens and working method thereof |
-
2016
- 2016-01-29 CN CN201620088674.6U patent/CN205507188U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467549A (en) * | 2016-01-29 | 2016-04-06 | 福建福光股份有限公司 | F5mm large relative aperture mechanical passive athermalization lens and compensation adjusting method thereof |
| CN106443938A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | High-transmittance type far infrared long wave focusing lens and working method thereof |
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