CN110488460A - A kind of 2.82mm focal length Streaming Media intelligent back vision camera lens and its imaging method - Google Patents
A kind of 2.82mm focal length Streaming Media intelligent back vision camera lens and its imaging method Download PDFInfo
- Publication number
- CN110488460A CN110488460A CN201910750466.6A CN201910750466A CN110488460A CN 110488460 A CN110488460 A CN 110488460A CN 201910750466 A CN201910750466 A CN 201910750466A CN 110488460 A CN110488460 A CN 110488460A
- Authority
- CN
- China
- Prior art keywords
- lens
- bent moon
- streaming media
- focal length
- camera lens
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
Abstract
The present invention relates to a kind of 2.82mm focal length Streaming Media intelligent back vision camera lens, rear group of B being positive in the optical system of the camera lens along light incident direction is successively arranged that focal power is negative from front to back preceding group of A, light bar C and focal power；Group A includes bent moon negative lens A1, biconcave lens A2 and the biconvex lens A3 set gradually from front to back before described；Group B includes the bent moon positive lens B1 set gradually from front to back, by biconvex lens B2 and the close gluing unit of bent moon negative lens B3 after described, have many advantages, such as high resolution, optical texture simplify, material price it is relatively inexpensive, can be adapted to the CCD of 2,000,000 pixel high-resolutions or CMOS.
Description
Technical field
The present invention relates to a kind of 2.82mm focal length Streaming Media intelligent back vision camera lens and its imaging methods.
Background technique
Early stage has various wide-angle tight shots to be applied in onboard system in the market, still, due to many products
At edge, aberration and high-order spherical aberration are difficult to correct, and belong to the vehicle-mounted product of low side.Currently, in vehicle-mounted industry, it is few this
Economical Streaming Media intelligent back vision camera lens.
Summary of the invention
In place of against the above deficiency, a kind of simple 2.82mm focal length Streaming Media intelligence of structure is provided
Energy backsight camera lens and its imaging method realize economical, high-resolution and high image quality.
The technical scheme is that a kind of 2.82mm focal length Streaming Media intelligent back vision camera lens, the optical system of the camera lens
Rear group of B being positive in system along light incident direction is successively arranged that focal power is negative from front to back preceding group of A, light bar C and focal power；
Group A includes bent moon negative lens A1, biconcave lens A2 and the biconvex lens A3 set gradually from front to back before described；B is organized after described
Including set gradually from front to back bent moon positive lens B1, by biconvex lens B2 and the close gluing unit of bent moon negative lens B3.
Further, the airspace between the preceding group A and rear group B is 2.37mm.
Further, the airspace between the bent moon negative lens A1 and biconcave lens A2 is 1.50mm, biconcave lens
Airspace between A2 and biconvex lens A3 is 0.98mm；The bent moon positive lens B1 and biconvex lens B2 and bent moon negative lens
Airspace between the close gluing unit of B3 is 0.1mm.
Further, the close gluing unit rear biconvex lens B2 and bent moon negative lens B3 is provided with optical filter.
A kind of imaging method of 2.82mm focal length Streaming Media intelligent back vision camera lens, sequentially includes the following steps: light from left-hand
The right side is successively through bent moon negative lens A1, biconcave lens A2, biconvex lens A3, bent moon positive lens B1, biconvex lens B2, bent moon negative lens
It is imaged after B3.
Compared with prior art, the invention has the following advantages:
From the technical indicator of completion it is found that total length of light path is shorter, then camera lens is small in size；Jiao Shizhong afterwards, can be with trigger interface
Video camera be used cooperatively.
Clear aperture is big, and light-inletting quantity is sufficient, lower under the environment of light condition difference can use；
The glass for using negative dn/dt close to diaphragm lens is organized afterwards, greatly compensates for the high/low temperature temperature drift of system；
The crown glass gluing of high refraction, the flint glass of high dispersion and high-refractivity and low-dispersion is selected to carry out achromatism and the axis that disappears
Outer spherical aberration.
Eyeglass used in the present invention is global face, and R value is moderate, mitigates eyeglass assembly difficulty, using low price glass, is reduced
Processing and material cost, while reducing the optical sensitive degree of camera lens.
Detailed description of the invention
The invention patent is further illustrated with reference to the accompanying drawing.
Fig. 1 is the optical texture schematic diagram of the embodiment of the present invention；
Fig. 2 is the mechanical structure schematic diagram of the embodiment of the present invention；
Fig. 3 is focused so that the MTF under visible light central vision image quality optimal cases schemes.
In figure: organizing B, A1 bent moon negative lens A1, A2 biconcave lens A2, A3 biconvex lens A3, B1 after organizing A, C light bar C, B before A
Bent moon positive lens B1, B2 biconvex lens B2, B3 bent moon negative lens B3.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 3, a kind of 2.82mm focal length Streaming Media intelligent back vision camera lens, edge in the optical system of the camera lens
The rear group of B that light incident direction is successively arranged that focal power is negative from front to back preceding group of A, light bar C and focal power are positive；Before described
Group A includes bent moon negative lens A1, biconcave lens A2 and the biconvex lens A3 set gradually from front to back；Group B includes certainly after described
The bent moon positive lens B1 that is set gradually after forward direction, by biconvex lens B2 and the close gluing unit of bent moon negative lens B3.
In the present embodiment, the airspace between the preceding group A and rear group B is 2.37mm.
In the present embodiment, the airspace between the bent moon negative lens A1 and biconcave lens A2 is 1.50mm, concave-concave
Airspace between lens A2 and biconvex lens A3 is 0.98mm；The bent moon positive lens B1 and biconvex lens B2 and bent moon are negative
Airspace between the close gluing unit of lens B3 is 0.1mm.
In the present embodiment, the close gluing unit rear biconvex lens B2 and bent moon negative lens B3 is provided with optical filter.
A kind of imaging method of 2.82mm focal length Streaming Media intelligent back vision camera lens, sequentially includes the following steps: light from left-hand
The right side is successively through bent moon negative lens A1, biconcave lens A2, biconvex lens A3, bent moon positive lens B1, biconvex lens B2, bent moon negative lens
It is imaged after B3.
The camera lens has the automotive field market advantage, and preceding group of negative power corrects 3 rank aberrations and 5 rank spherical aberrations, organize glue afterwards
It closes piece and main correction color difference and axis is formed by the flint glass of the high dispersion of high refractive index and the crown glass of high-refractivity and low-dispersion
Outer spherical aberration, reasonable distribution focal power reduce each face incidence angle, reach high-definition camera level with lower susceptibility, in optical design
When, lens element material is reasonably selected, camera lens is made to obtain reasonable school in the aberration of the wave-length coverage of 420~700nm
Just and balance.Spacer ring 2 also is provided with before biconcave lens A2 and biconvex lens A3, between bent moon positive lens B1 and biconvex lens B2.
In the present embodiment, the design of mechanical structure need to meet the assembly that production and assembly technique required, met client simultaneously
Size requires and meets concentricity, effective clear aperature and the airspace in light path design between each eyeglass.Wherein, CD spacer ring
1: the mechanical parts major function is airspace and its optical axis assembly of guarantee biconvex lens A3 and bent moon positive lens B1, while right
Invalid light is intercepted and is absorbed, and can effectively solve the problem that lens stray light problem using the design of delustring line inside spacer ring.Lens barrel:
Sleeve of this mechanical parts as bearing lens and spacer ring, using metal material, metal lens barrel is sturdy and durable, and intensity preferably also compares
It is wear-resisting.The internal diameter of each ladder needs to process in strict accordance with drawing tolerance outer inside lens barrel, and the concentricity between each ladder is also true
An important factor for protecting image quality, the i.e. plane of spacer ring and lens contacts will have accurate verticality and concentricity to guarantee eyeglass
The accuracy of assembly keeps it close with eyeglass cooperation, guarantees the consistency of lens light axis.The lens barrel is connect using M12X0.5-4h's
Mouth mode, to match the requirement of client's video camera.
In the present embodiment, following optical index has been reached by the optical system that above-mentioned lens set is constituted:
Focal length: f '=2.82mm；
Relative aperture F=1.8；
Field angle: 2w >=100 ° (image space is as 2 η ' of visual field >=Ф 4.8mm)；
Distortion: < -25%；
Resolution ratio: it can be adapted to 2,000,000 pixel high-resolution CCD or cmos camera；
Total length of light path ∑≤16.5mm, optics rear cut-off distance L ' >=4.5mm；
It is applicable in spectral line range: 420nm~700nm.
In the present embodiment, the parameter of each eyeglass is as shown in the table:
Entire camera lens guarantees camera lens refractive index and the distribution of focal power approximate ratio, guarantees the equal of the incidence angle size of front and back group eyeglass
Weighing apparatus property improves manufacturing feasibility to reduce the sensibility of camera lens.Guarantee the reversed property of front and back group focal power, simultaneously to improve
The popularity that entire camera lens uses, concrete scheme are as follows:
As can be seen from Figure 3, it is seen that when light is imaged, 120 line of central vision is greater than 0.5 to place, and 120 line of peripheral field is greater than 0.4 to place.
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 (5)
1. a kind of 2.82mm focal length Streaming Media intelligent back vision camera lens, it is characterised in that: along light in the optical system of the camera lens
The rear group of B that preceding group of A, light bar C and the focal power that incident direction is successively arranged that focal power is negative from front to back are positive；A is organized before described
Including bent moon negative lens A1, biconcave lens A2 and the biconvex lens A3 set gradually from front to back；Group B includes from forward direction after described
The bent moon positive lens B1 that sets gradually afterwards, by biconvex lens B2 and the close gluing unit of bent moon negative lens B3.
2. 2.82mm focal length Streaming Media intelligent back vision camera lens according to claim 1, it is characterised in that: it is described before group A and
Organizing the airspace between B afterwards is 2.37mm.
3. 2.82mm focal length Streaming Media intelligent back vision camera lens according to claim 1, it is characterised in that: the bent moon is negative saturating
Airspace between mirror A1 and biconcave lens A2 is 1.50mm, and the airspace between biconcave lens A2 and biconvex lens A3 is
0.98mm；Airspace between the bent moon positive lens B1 and biconvex lens B2 and the close gluing unit of bent moon negative lens B3 is
0.1mm。
4. 2.82mm focal length Streaming Media intelligent back vision camera lens according to claim 1, it is characterised in that: biconvex lens B2 and
The close gluing unit rear bent moon negative lens B3 is provided with optical filter.
5. a kind of imaging method of 2.82mm focal length Streaming Media intelligent back vision camera lens, which is characterized in that using such as claim 1-4
Any 2.82mm focal length Streaming Media intelligent back vision camera lens, and light is sequentially included the following steps: from left to right successively through curved
It is imaged after moon negative lens A1, biconcave lens A2, biconvex lens A3, bent moon positive lens B1, biconvex lens B2, bent moon negative lens B3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750466.6A CN110488460A (en) | 2019-08-14 | 2019-08-14 | A kind of 2.82mm focal length Streaming Media intelligent back vision camera lens and its imaging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750466.6A CN110488460A (en) | 2019-08-14 | 2019-08-14 | A kind of 2.82mm focal length Streaming Media intelligent back vision camera lens and its imaging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110488460A true CN110488460A (en) | 2019-11-22 |
Family
ID=68549924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910750466.6A Pending CN110488460A (en) | 2019-08-14 | 2019-08-14 | A kind of 2.82mm focal length Streaming Media intelligent back vision camera lens and its imaging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110488460A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150253548A1 (en) * | 2014-03-05 | 2015-09-10 | Takahiro Nakayama | Imaging-optical system, stereo camera apparatus, and in-vehicle camera apparatus |
| CN107561670A (en) * | 2017-09-01 | 2018-01-09 | 福建福光股份有限公司 | A kind of big thang-kngs of 2.8mm day and night confocal camera lens |
| CN107656360A (en) * | 2017-11-17 | 2018-02-02 | 福建福光股份有限公司 | The vehicle-mounted tight shot of 2.8mm ultra-wide angle |
| CN108020909A (en) * | 2017-12-12 | 2018-05-11 | 福建福光股份有限公司 | A kind of 2.8mm focal lengths high definition ultra-wide angle on-vehicle lens |
| CN108169875A (en) * | 2017-12-20 | 2018-06-15 | 福建福光股份有限公司 | A kind of big thang-kng of 2.8mm day and night confocal high definition camera lens |
| CN210514764U (en) * | 2019-08-14 | 2020-05-12 | 福建福光天瞳光学有限公司 | 2.82mm focus streaming media intelligence rear-view mirror head |
-
2019
- 2019-08-14 CN CN201910750466.6A patent/CN110488460A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150253548A1 (en) * | 2014-03-05 | 2015-09-10 | Takahiro Nakayama | Imaging-optical system, stereo camera apparatus, and in-vehicle camera apparatus |
| CN107561670A (en) * | 2017-09-01 | 2018-01-09 | 福建福光股份有限公司 | A kind of big thang-kngs of 2.8mm day and night confocal camera lens |
| CN107656360A (en) * | 2017-11-17 | 2018-02-02 | 福建福光股份有限公司 | The vehicle-mounted tight shot of 2.8mm ultra-wide angle |
| CN108020909A (en) * | 2017-12-12 | 2018-05-11 | 福建福光股份有限公司 | A kind of 2.8mm focal lengths high definition ultra-wide angle on-vehicle lens |
| CN108169875A (en) * | 2017-12-20 | 2018-06-15 | 福建福光股份有限公司 | A kind of big thang-kng of 2.8mm day and night confocal high definition camera lens |
| CN210514764U (en) * | 2019-08-14 | 2020-05-12 | 福建福光天瞳光学有限公司 | 2.82mm focus streaming media intelligence rear-view mirror head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107991762A (en) | A kind of 1.3mm focal lengths panorama day and night confocal high definition camera lens | |
| CN108020909A (en) | A kind of 2.8mm focal lengths high definition ultra-wide angle on-vehicle lens | |
| CN105445906B (en) | A kind of big thang-kng of 4mm focal wide angles day and night confocal camera lens | |
| CN105425365B (en) | The big thang-kng tight shots of 6mm | |
| CN105259646A (en) | 2.8-8mm small-size zoom lens | |
| CN105259638A (en) | High-light through high-definition fixed-focus aspheric lens | |
| CN105372797B (en) | A kind of mini-focal aspheric lens | |
| CN105938240A (en) | 2.2mm ultra wide-angle day and night confocal lens and manufacturing method thereof | |
| CN210514764U (en) | 2.82mm focus streaming media intelligence rear-view mirror head | |
| CN108319005A (en) | A kind of super clear 4K optical systems of the aspherical day and nights of 4mm | |
| CN209343020U (en) | A kind of 3.9mm focal length Streaming Media intelligent back vision camera lens | |
| CN107797260A (en) | The economical tight shots of 4mm day and night ultra high-definition 4K | |
| CN209343025U (en) | A kind of 3.24mm focal length automobile data recorder high definition camera lens | |
| CN108181702A (en) | A kind of 6mm small sizes, super large thang-kng, double light path optical system | |
| CN110488460A (en) | A kind of 2.82mm focal length Streaming Media intelligent back vision camera lens and its imaging method | |
| CN107436483A (en) | 1.7mm ultra-wide angle backsight on-vehicle lens | |
| CN205027964U (en) | 2. 8 -12mm zoom aspherical mirror head | |
| CN209343029U (en) | A kind of 3.2mm high definition bugeye lens | |
| CN107741631A (en) | A kind of 2.8mm high definition day and night confocal camera lens | |
| CN109358407B (en) | 3.8mm super-economical low-sensitivity high-order aspheric optical system and imaging method thereof | |
| CN109633863B (en) | Vehicle-mounted front-view high-definition lens with focal length of 5.47mm and imaging method thereof | |
| CN113376811A (en) | 2.8mm large-aperture day and night dual-purpose glass-plastic fixed-focus optical system | |
| CN105353500A (en) | Low-sensitivity high-definition zoom lens | |
| CN108169875A (en) | A kind of big thang-kng of 2.8mm day and night confocal high definition camera lens | |
| CN110333591A (en) | A kind of 0.95mm vehicle-mounted high-definition looks around optical system and its imaging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |