CN105068219B - A kind of high resolution day and night fish eye lens and its focus adjustment method - Google Patents
A kind of high resolution day and night fish eye lens and its focus adjustment method Download PDFInfo
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- CN105068219B CN105068219B CN201510602210.2A CN201510602210A CN105068219B CN 105068219 B CN105068219 B CN 105068219B CN 201510602210 A CN201510602210 A CN 201510602210A CN 105068219 B CN105068219 B CN 105068219B
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Abstract
The present invention relates to a kind of high resolution day and night fish eye lenses, it is characterised in that：It is to organize B after negative lens set that the optical module of the camera lens, which includes group A and a focal power before being negative lens set along the light focal power that incident direction is set gradually from left to right,；Group A is from a left side to being disposed with a negative meniscus lens A 1, plastic aspheric lens A 2, positive bent moon tooth form lens A 3 before described, group B is disposed with a plastic aspheric lens B 1 and a biconcave lens gluing unit B 2 from left to right after described, the negative meniscus lens A 1, plastic aspheric lens A 2, positive bent moon tooth form lens A 3,1 and one biconcave lens gluing unit B 2 of plastic aspheric lens B center be respectively positioned on the optical axis of light.The beneficial effects of the present invention are：It is not only compact-sized, it is small, it is light-weight, and can realize day and night.
Description
Technical field
The present invention relates to optical field more particularly to a kind of high resolution day and night fish eye lenses and its focus adjustment method.
Background technology
With the expansion in optical material library and the enhancing of social security protection consciousness, the commercially available swift and violent extension of safety monitoring,
Security product performance also shows diversified variation simultaneously.Now as advanced technology of video compressing encoding is constantly ripe, base
In the rapid development of the network transmission of IP and the application of Digital Zoom technology, a series of 3,000,000, five are had been introduced on the market
The high-definition camera of mega pixel.Fish eye lens disclosure satisfy that 360 degree of overall view monitoring demands, but its distortion is very big so that edge
Enlargement ratio is low so as to influence edge picture clarity.
Micro television monitor camera is from occurring having 20~30 years history till now, by innovation and development for many years,
Currently form the micro pick-up lens of different series plurality of specifications model with it match but the performance indicator of these camera lenses
Very different, most of to belong to low grade products, performance indicator is low, only adapts to the common camera of mega pixel;Image it is abnormal
Variable is larger, and pattern distortion becomes larger with visions of reality picture difference, and authenticity is poor, and edge resolving power is inadequate, and cost is higher.
Invention content
The purpose of the present invention is being directed to more than shortcoming, provide a kind of high resolution day and night fish eye lens and its
Focus adjustment method, it is compact-sized, it is small, it is light-weight, it can realize day and night.
Scheme is used by the present invention solves technical problem：A kind of high resolution day and night fish eye lens, the mirror
The optical module of head includes organizing A and one before being negative lens set along the light focal power that incident direction is set gradually from left to right
Focal power is to organize B after negative lens set；Group A is from a left side to being disposed with a negative meniscus lens A-1, plastic aspherical element before described
Lens A-2, positive bent moon tooth form lens A-3 organize B after described and are disposed with a plastic aspheric lens B-1 and one from left to right
Biconcave lens gluing unit B-2, the negative meniscus lens A-1, plastic aspheric lens A-2, positive bent moon tooth form lens A-3, modeling
The center of a material non-spherical lens B-1 and biconcave lens gluing unit B-2 is respectively positioned on the optical axis of light.
Further, the airspace between the preceding group A and rear group B is 5.939mm.
Further, the airspace of the negative meniscus lens A-1 and plastic aspheric lens A-2 is 2.865mm；Institute
The airspace for stating plastic aspheric lens B-1 and biconcave lens gluing unit B-2 is 0.095mm.
Further, one is further included for housing the body tube of the optical module, is transversely corresponded in the body tube
Several are provided with for housing the accommodating cavity of the optical module, A is organized before described and rear group B is respectively arranged at the body tube
Rear and front end in.
Further, the body tube front end is equipped with the pressure for compressing the negative meniscus lens A-1 both sides outer edge
Circle；A BC spacer rings are folded between the plastic aspheric lens A-2 and positive bent moon tooth form lens A-3, are organized in A just before described
CD spacer rings are folded between plastic aspheric lens B-1 in bent moon tooth form lens A-3 and the rear group B.
Further, the primary mirror tube rear end both sides are equipped with to fix the biconcave lens gluing unit B-2 radially
The stopper to extend internally.
The present invention also provides a kind of based on the fish-eye focus adjustment method of high resolution day and night described above, packet
Include following steps：
Step S1：By negative meniscus lens A-1, plastic aspheric lens A-2, the positive bent moon tooth form lens A-3 in preceding group of A
With plastic aspheric lens B-1, the biconcave lens gluing unit B-2 in rear group of B along light from left to right incident direction from a left side to
The right side is set gradually；
Step S2：The negative meniscus lens A-1, plastic aspheric lens A-2, positive bent moon tooth form lens A-3, plastics are non-
The center of spherical lens B-1 and a biconcave lens gluing unit B-2 are respectively positioned on the optical axis of light；
Step S3：The optical module of the camera lens in the wide spectral range of 485nm-850nm is subjected to aberration correction, is made
The preceding group of A and rear group B for obtaining the optical module are confocal.
Compared with prior art, the present invention has following advantageous effect：
（1）In optical design, aberration correction and balance are carried out to the wide spectral range of 485~850nm, make camera lens in width
Spectral region all has excellent image quality, and it is confocal to realize wide spectrum so that clear under the light environment that camera lens can not only be in the daytime
Clear imaging,, also can blur-free imaging by infrared light filling under night extremely low illumination environment；
（2）High refraction, the optical glass material of low dispersion and plastic aspherical element eyeglass are selected, it is auxiliary by computer optics
It helps design and correct the various aberrations of optical lens with optimizing, make the high resolution of camera lens, adapt to 5,000,000 pixels height
The requirement of clarity video camera；
（3）The enlargement ratio of lens edge visual field is improved by controlling f- θ distortion, so as to improve its resolving power, is made
It meets after peripheral field picture evens up expansion, there is enough resolution ratio.
（4）The B-1 in A-2 and rear group B before described in group A is plastic aspherical element eyeglass, has higher cost performance.
（5）In structure design, the present invention had not only ensured the accurate of the concentricity of camera lens, precision and axial position, but also made knot
Structure is compact to design compact（Overall dimensions can be designed as Ф 18mm x 26.2mm）, the overall compact occasion of structure is can be suitably used for,
Such as small-sized ball machine, half ball machine etc., applicable surface is wider.Optical module uses NC super machining technique, meets optics
The strict demand to air distance is designed, makes the compact-sized of camera lens, it is small, it is light-weight.
Description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the index path of the lens optical component of the embodiment of the present invention.
Fig. 2 is the structure diagram of the camera lens of the embodiment of the present invention.
1- negative meniscus lens A-1；2- plastic aspheric lens A-2；The positive bent moon tooth form lens A-3 of 3-；4- plastics aspheric
Face lens B-1；5- biconcave lens gluing units B-2；6- body tubes；7-BC spacer rings；8-CD spacer rings；9- trim rings；10- stoppers.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Fig. 1~2, the embodiment of the present invention provides a kind of high resolution day and night fish eye lens, the camera lens
Optical module includes group A and a light focus before being negative lens set along the light focal power that incident direction is set gradually from left to right
It spends to organize B after negative lens set；Group A is from a left side to being disposed with a negative meniscus lens A-1 before described（1）, plastic aspherical element
Lens A-2（2）, positive bent moon tooth form lens A-3（3）, organize B after described and be disposed with a plastic aspheric lens B- from left to right
1（4）With a biconcave lens gluing unit B-2（5）, the negative meniscus lens A-1（1）, plastic aspheric lens A-2（2）, it is just curved
Selenodont lens A-3（3）, plastic aspheric lens B-1（4）With a biconcave lens gluing unit B-2（5）Center be respectively positioned on light
Optical axis on.
From the foregoing, the beneficial effects of the present invention are：In structure design, the present invention had both ensured the concentric of camera lens
Degree, precision and axial position it is accurate, and make structure design compact compact, meet optical design strictly to air distance
It asks, makes the compact-sized of camera lens, it is small, it is light-weight.Select high refraction, the optical glass material of low dispersion and plastics aspheric
Face eyeglass by computer optics Computer Aided Design and correct optical lens various aberrations with optimizing, makes point of camera lens
Resolution is high, adapts to the requirement of 5,000,000 pixel high definition videos camera shooting.
In the present embodiment, the airspace between the preceding group A and rear group B is 5.939mm.
In the present embodiment, the negative meniscus lens A-1（1）With plastic aspheric lens A-2（2）Airspace be
2.865mm；The plastic aspheric lens B-1（4）With biconcave lens gluing unit B-2（5）Airspace be 0.095mm.
In the present embodiment, one is further included for housing the body tube of the optical module（6）, the body tube（6）It is interior
Several are transversely correspondingly arranged on for housing the accommodating cavity of the optical module, A is organized before described and rear group B is respectively arranged at
The body tube（6）Rear and front end in.The diameter of the accommodating cavity is corresponded with the optical module of eyeglass, ensures eyeglass light
The stability of component is learned, while ensures the negative meniscus lens A-1（1）, plastic aspheric lens A-2（2）, positive bent moon tooth form
Lens A-3（3）, plastic aspheric lens B-1（4）With a biconcave lens gluing unit B-2（5）Center be respectively positioned on the optical axis of light
On.And the body tube（6）Outer diameter matched using the interface of M12 interfaces and video camera.
In the present embodiment, the body tube（6）Front end is equipped with to compress the negative meniscus lens A-1（1）Both sides
The trim ring of outer edge（9）；The plastic aspheric lens A-2（2）With positive bent moon tooth form lens A-3（3）Between be folded with a BC
Spacer ring（7）, the positive bent moon tooth form lens A-3 in A is organized before described（3）With the plastic aspheric lens B-1 in the rear group B（4）
Between be folded with CD spacer rings（8）.Pass through the trim ring（9）, ensure the negative meniscus lens A-1（1）It is firmly secured at institute
State body tube（6）Front end in, prevent its movement；Pass through the BC spacer rings（7）With CD spacer rings（8）Ensure lens optical inter-module
Airspace.The BC spacer rings（7）Annular in shape and its both ends withstand on the plastic aspheric lens A-2 respectively（2）It is just curved
Selenodont lens A-3（3）Surface, the CD spacer rings（8）The ring-type being gradually reduced from left to right in internal diameter, the CD spacer rings（8）
Left and right ends withstand on positive bent moon tooth form lens A-3 respectively（3）Cambered surface and plastic aspheric lens B-1（4）Surface on.
In the present embodiment, the body tube（6）Rear end both sides are equipped with to fix the biconcave lens gluing unit B-2
（5）Radially inwardly extending stopper（10）.Pass through the stopper（10）Cause the biconcave lens gluing unit B-2（5）
Body tube（6）Stability in rear end.
The present invention also provides a kind of based on the fish-eye focus adjustment method of high resolution day and night described above, packet
Include following steps：
Step S1：By the negative meniscus lens A-1 in preceding group of A（1）, plastic aspheric lens A-2（2）, positive bent moon tooth form
Lens A-3（3）With the plastic aspheric lens B-1 in rear group of B（4）, biconcave lens gluing unit B-2（5）Along light from left to right
Incident direction is set gradually from left to right；
Step S2：The negative meniscus lens A-1（1）, plastic aspheric lens A-2（2）, positive bent moon tooth form lens A-3
（3）, plastic aspheric lens B-1（4）With a biconcave lens gluing unit B-2（5）Center be respectively positioned on the optical axis of light；
Step S3：The optical module of the camera lens in the wide spectral range of 485nm-850nm is subjected to aberration correction, is made
The preceding group of A and rear group B for obtaining the optical module are confocal.
In the present embodiment, the technical indicator in the present invention is as follows：
1st, focal length：f′=1.07mm；
2nd, relative aperture F=2.5；
3rd, field angle：2w>180 ° (image space is as 2 η ' of visual field >=Ф 3.15mm)；
4th, f- θ distort：＜ -2%；
5th, resolution ratio：It can be adapted with 5,000,000 pixel high-resolution video cameras；
6th, total length of light path ∑≤26.2mm, optics rear cut-off distance l ' >=4.81mm；
7th, it is applicable in spectral line range：480nm~850nm.
The fish-eye focus adjustment method of high resolution day and night of the present embodiment, passes through the wide spectrum to 485~850nm
Range carries out aberration correction and balance, and camera lens is made all to have excellent image quality in wide spectral range, and it is confocal to realize wide spectrum, makes
Blur-free imaging under the light environment that camera lens can not only be in the daytime is obtained, under night extremely low illumination environment, by infrared light filling, also can
Blur-free imaging.
In conclusion a kind of high resolution day and night fish eye lens provided by the invention and its focus adjustment method, both ensured
The concentricity of camera lens, precision and axial position it is accurate, and make structure design compact compact, meet optical design to air away from
From strict demand, make the compact-sized of camera lens, it is small, it is light-weight, and can realize day and night.
Above-listed preferred embodiment provided by the invention has carried out the object, technical solutions and advantages of the present invention further
It is described in detail, it should be understood that the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of fish-eye focus adjustment method of high resolution day and night, it is characterised in that：The high resolution day and night
Fish-eye optical module is included before being the lens set born along the light focal power that incident direction is set gradually from left to right
Group A and a focal power be bear lens set after organize B；It is described before group A be disposed with from left to right a negative meniscus lens A-1,
Plastic aspheric lens A-2, positive bent moon tooth form lens A-3, it is saturating that the rear group B is disposed with a plastic aspherical element from left to right
The gluing unit B-2, the negative meniscus lens A-1 of mirror B-1 and a biconcave lens biconvex lens, plastic aspheric lens A-2, just
The center of the gluing unit B-2 of bent moon tooth form lens A-3, plastic aspheric lens B-1 and a biconcave lens biconvex lens is respectively positioned on
On the optical axis of light；Airspace before described between group A and rear group B is 5.939mm；The negative meniscus lens A-1 and modeling
The airspace for expecting non-spherical lens A-2 is 2.865mm；The plastic aspheric lens B-1 and biconcave lens biconvex lens
The airspace of gluing unit B-2 is 0.095mm；
The focus adjustment method, includes the following steps：
Step S1：By in preceding group of A negative meniscus lens A-1, plastic aspheric lens A-2, positive bent moon tooth form lens A-3 and after
Group B in plastic aspheric lens B-1, biconcave lens biconvex lens gluing unit B-2 along light from left to right incident direction from
Left-to-right is set gradually；
Step S2：The negative meniscus lens A-1, plastic aspheric lens A-2, positive bent moon tooth form lens A-3, plastic aspherical element
The center of the gluing unit B-2 of lens B-1 and biconcave lens biconvex lens is respectively positioned on the optical axis of light；
Step S3：The optical module of the camera lens is subjected to aberration correction in the wide spectral range of 485nm-850nm so that institute
The preceding group of A and rear group B for stating optical module are confocal.
2. a kind of fish-eye focus adjustment method of high resolution day and night according to claim 1, it is characterised in that：Also
Including one for housing the body tube of the optical module, several are transversely correspondingly arranged in the body tube for housing
The accommodating cavity of the optical module, organizes A before described and rear group B is respectively arranged in the rear and front end of the body tube.
3. a kind of fish-eye focus adjustment method of high resolution day and night according to claim 2, it is characterised in that：Institute
Body tube front end is stated equipped with the trim ring for compressing the negative meniscus lens A-1 both sides outer edge；The plastic aspherical element is saturating
A BC spacer rings are folded between mirror A-2 and positive bent moon tooth form lens A-3, positive bent moon tooth form lens A-3 and institute in A are organized before described
It states and is folded with CD spacer rings between the plastic aspheric lens B-1 in rear group of B.
4. a kind of fish-eye focus adjustment method of high resolution day and night according to claim 2, it is characterised in that：Institute
State primary mirror tube rear end both sides be equipped with for fix the biconcave lens biconvex lens gluing unit B-2 it is radially inwardly extending
Stopper.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510602210.2A CN105068219B (en) | 2015-09-21 | 2015-09-21 | A kind of high resolution day and night fish eye lens and its focus adjustment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510602210.2A CN105068219B (en) | 2015-09-21 | 2015-09-21 | A kind of high resolution day and night fish eye lens and its focus adjustment method |
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| CN105068219B true CN105068219B (en) | 2018-06-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105938240B (en) * | 2016-06-17 | 2018-06-12 | 福建福光股份有限公司 | A kind of 2.2mm ultra-wide angle day and night confocal camera lens and preparation method thereof |
| CN107861226A (en) * | 2017-12-26 | 2018-03-30 | 中国计量大学 | A kind of low distortion pick-up lens of big visual field |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201984200U (en) * | 2010-12-31 | 2011-09-21 | 福建福光数码科技有限公司 | Ultra-wide-angle high-resolution daytime and nighttime dual-purpose pickup lens |
| CN102323657A (en) * | 2011-10-12 | 2012-01-18 | 舜宇光学(中山)有限公司 | Monitoring lens |
| CN104570286A (en) * | 2014-12-08 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Micro fisheye camera lens and head-mounted display equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005195624A (en) * | 2003-12-26 | 2005-07-21 | Cosina Co Ltd | Lens apparatus for vehicle-mounted camera |
| JP4625711B2 (en) * | 2005-03-31 | 2011-02-02 | 日本電産ニッシン株式会社 | Wide angle lens |
| US7869141B2 (en) * | 2007-09-25 | 2011-01-11 | Alex Ning | Compact fisheye objective lens |
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2015
- 2015-09-21 CN CN201510602210.2A patent/CN105068219B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201984200U (en) * | 2010-12-31 | 2011-09-21 | 福建福光数码科技有限公司 | Ultra-wide-angle high-resolution daytime and nighttime dual-purpose pickup lens |
| CN102323657A (en) * | 2011-10-12 | 2012-01-18 | 舜宇光学(中山)有限公司 | Monitoring lens |
| CN104570286A (en) * | 2014-12-08 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Micro fisheye camera lens and head-mounted display equipment |
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