CN209343025U - A kind of 3.24mm focal length automobile data recorder high definition camera lens - Google Patents
A kind of 3.24mm focal length automobile data recorder high definition camera lens Download PDFInfo
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- CN209343025U CN209343025U CN201822233063.8U CN201822233063U CN209343025U CN 209343025 U CN209343025 U CN 209343025U CN 201822233063 U CN201822233063 U CN 201822233063U CN 209343025 U CN209343025 U CN 209343025U
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Abstract
The utility model relates to a kind of 3.24mm focal length automobile data recorder high definition camera lenses, including lens barrel and the optical system being arranged in lens barrel, the optical system includes rear group of eyeglass B being positive along preceding group of eyeglass A, diaphragm C and the focal power that the light focal power that incident direction is set gradually from front to back is negative；Group eyeglass A includes the bent moon negative lens A-1 set gradually from front to back and bent moon negative lens A-2 before described；Group eyeglass B includes the bent moon positive lens B-1 set gradually from front to back, by the gluing unit of biconvex lens B-2 and bent moon negative lens B-3 contiguity after described.The utility model is structurally reasonable, have many advantages, such as larger field angle, 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 utility model relates to a kind of 3.24mm focal length automobile data recorder high definition camera lenses.
Background technique:
Currently, thering are 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 the optical index of market demands are reached using more eyeglasses, therefore big
Product cost is increased greatly.Currently, rarely having the on-vehicle lens of the high image quality of low cost truly in vehicle-mounted industry.
Utility model content:
The utility model makes improvement for the above-mentioned problems of the prior art, i.e., skill to be solved in the utility model
Art problem is to provide the 3.24mm focal length automobile data recorder high definition camera lens of a kind of economical, high-resolution and high image quality.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of 3.24mm focal length automobile data recorder
High definition camera lens, including lens barrel and the optical system being arranged in lens barrel, the optical system includes incident from front to back along light
The rear group of eyeglass B that preceding group of eyeglass A, diaphragm C and the focal power that the focal power that direction is set gradually is negative are positive；Eyeglass is organized before described
A includes the bent moon negative lens A-1 set gradually from front to back and bent moon negative lens A-2；Group eyeglass B includes from front to back after described
The bent moon positive lens B-1 set gradually, the gluing unit touched by biconvex lens B-2 and bent moon negative lens B-3.
Further, the airspace between the preceding group eyeglass A and rear group eyeglass B is 0.63mm.
Further, the airspace in the preceding group eyeglass A between bent moon negative lens A-1 and bent moon negative lens A-2 is
2.73 mm, the airspace between the bent moon negative lens A-2 and bent moon positive lens B-1 are 0.7 mm；Eyeglass B is organized after described
Airspace between middle bent moon positive lens B-1 and the gluing unit touched by biconvex lens B-2 and bent moon negative lens B-3 is 0.1
mm。
Further, optical filter is provided with by the rear of the biconvex lens B-2 and bent moon negative lens B-3 gluing unit touched.
Further, the first spacer ring, the bent moon are provided between the bent moon negative lens A-2 and bent moon positive lens B-1
It is provided with the second spacer ring between negative lens A-2 and bent moon positive lens B-1, is arranged between the bent moon positive lens B-1 and gluing unit
There is third spacer ring.
Compared with prior art, the utility model has the effect that
(1) total length of light path is shorter, then camera lens is small in size；Jiao Shizhong afterwards, can cooperate with the video camera of trigger interface makes
With；
(2) clear aperture is big, and light-inletting quantity is sufficient, can be in the more dim lower use of environment；
(3) group eyeglass A is negative power before, and the rear eyeglass B that organizes is positive light coke, and the two matches certifiable camera lens in height
Warm environment still can normal use；
(4) select high refraction, the flint glass of low dispersion and the crown glass of the high dispersion of high refractive index come achromatism and
Astigmatism realizes high-resolution and high image quality；
(5) eyeglass used in is global face, and R value is moderate, mitigates eyeglass assembly difficulty, using low price glass, reduces and adds
Work and material cost, while reducing the optical sensitive degree of camera lens.
Detailed description of the invention:
Fig. 1 is the optical system structure schematic diagram of the utility model embodiment；
Fig. 2 is the organigram of the utility model embodiment；
Fig. 3 is focused so that the MTF under visible light central vision image quality optimal cases schemes.
In figure:
1- lens barrel；The first spacer ring of 2-；The second spacer ring of 3-；4- third spacer ring；Eyeglass A is organized before A-；A-1: bent moon negative lens A-
1；A-2: bent moon negative lens A-2；Eyeglass B is organized after B-；B-1: bent moon positive lens B-1；B-2: biconvex lens B-2；B-3: bent moon is negative
Lens B-3；C- diaphragm.
Specific embodiment:
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
As shown in Figs. 1-2, a kind of 3.24mm focal length automobile data recorder high definition camera lens of the utility model, including lens barrel 1 and set
The optical system in lens barrel 1 is set, the optical system includes along the light focal power that incident direction is set gradually from front to back
The rear group of eyeglass B that preceding group of eyeglass A, diaphragm C and the focal power being negative are positive；Group eyeglass A includes successively setting from front to back before described
The bent moon negative lens A-1 and bent moon negative lens A-2 set；Group eyeglass B includes that the bent moon that sets gradually from front to back is just saturating after described
Mirror B-1, the gluing unit touched by biconvex lens B-2 and bent moon negative lens B-3.
In the present embodiment, the airspace organized between eyeglass A and rear group eyeglass B before described is 0.63mm.
In the present embodiment, the airspace in eyeglass A between bent moon negative lens A-1 and bent moon negative lens A-2 is organized before described
For 2.73 mm, the airspace between the bent moon negative lens A-2 and bent moon positive lens B-1 is 0.7 mm；Eyeglass is organized after described
Airspace in B between bent moon positive lens B-1 and the gluing unit touched by biconvex lens B-2 and bent moon negative lens B-3 is 0.1
mm。
In the present embodiment, optical filtering is provided with by the rear of the biconvex lens B-2 and bent moon negative lens B-3 gluing unit touched
Piece.
In the present embodiment, the parameter of each eyeglass is as shown in the table:
Following optical index has been reached by the optical system that above-mentioned eyeglass forms:
Focal length: f '=3.24mm；
Relative aperture F=2.2；
Field angle: 2w >=140 ° (image space is as 2 η ' of visual field >=Ф 6.6mm)；
Distortion: < -15.6%；
Resolution ratio: it can be adapted to 2,000,000 pixel high-resolution CCD or cmos camera；
Total length of light path ∑≤17.5mm, optics rear cut-off distance L ' >=5.5mm；
It is applicable in spectral line range: 420nm~700nm.
In the present embodiment, entire camera lens guarantees camera lens refractive index and the distribution of focal power approximate ratio, guarantees forward and backward group of eyeglass
The harmony of incidence angle size improve manufacturing feasibility to reduce the sensibility of camera lens.Guarantee that focal power is organized in front and back simultaneously
Reversed property, to improve the popularity that entire camera lens uses, concrete scheme is as follows:
As can be seen from Figure 3, it is seen that the distance in light and infrared light rear lens focus face differs very little, can be same in same image planes
When meet two kinds of wave band imaging requirements.When visual light imaging, 120 line of central vision is greater than 0.5 to place, 120 line pair of peripheral field
Place is greater than 0.35.
In the present embodiment, which has the automotive field market advantage, and preceding group of negative power corrects 3 rank aberrations and 5 ranks
Spherical aberration, rear group glue pellet form main rectify by the crown glass of the high dispersion of flint glass and high refractive index of high-refractivity and low-dispersion
Positive color difference and astigmatism, reasonable distribution focal power reduce each face incidence angle, reach high-definition camera level with lower susceptibility, in light
When learning design, lens element material is reasonably selected, closes camera lens in the aberration of the wave-length coverage of 480~700nm
The correction and balance of reason.
In the present embodiment, the design of mechanical structure need to meet the assembly ruler that production and assembly technique required, met client simultaneously
It is very little to require and meet concentricity, effective clear aperature and the airspace in light path design between each eyeglass.
In the present embodiment, the first spacer ring 2 is provided between the bent moon negative lens A-2 and bent moon positive lens B-1, to protect
The airspace and its optical axis for demonstrate,proving bent moon negative lens A-2 and bent moon positive lens B-1 are assembled, at the same to invalid light intercept with
It absorbs, lens stray light problem can effectively solve the problem that using the design of delustring line inside the first spacer ring.
In the present embodiment, the second spacer ring 3 is provided between the bent moon negative lens A-2 and bent moon positive lens B-1, to protect
The air price and its optical axis for demonstrate,proving bent moon negative lens A-2 and bent moon positive lens B-1 are assembled, at the same to invalid light intercept with
It absorbs, lens stray light problem can effectively solve the problem that using hook design in step inside the second spacer ring, by stop position
Hole size control, can guarantee the clear aperature of camera lens, step convenient working personnel take one's bearings, prevent wrongly installed.
In the present embodiment, it is provided with third spacer ring 4 between the bent moon positive lens B-1 and gluing unit, to guarantee bent moon
The airspace and its optical axis of positive lens B-1 and gluing unit are assembled, while invalid light is intercepted and being absorbed, third spacer ring
Inside can effectively solve the problem that lens stray light problem using stepped design.
In the present embodiment, sleeve of the lens barrel as bearing lens and spacer ring, using plastics, plastics lens barrel is cheap, and one
The preferable intensity of cause property is preferable also more wear-resisting.The internal diameter of each ladder needs to process in strict accordance with drawing tolerance outer inside lens barrel, respectively
An important factor for concentricity between ladder is also to ensure that image quality, the i.e. plane of spacer ring and lens contacts will have accurate hang down
Straight degree guarantees the accuracy of eyeglass assembly with concentricity, keeps it close with eyeglass cooperation, guarantees the consistency of lens light axis.It should
Lens barrel uses the interface mode of M12X0.5-4h, to match the requirement of client's video camera.
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the patents it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (5)
1. a kind of 3.24mm focal length automobile data recorder high definition camera lens, it is characterised in that: including lens barrel and the light being arranged in lens barrel
System, the optical system include preceding group of eyeglass A being negative along the light focal power that incident direction is set gradually from front to back,
The rear group of eyeglass B that diaphragm C and focal power are positive；Group eyeglass A includes the bent moon negative lens A-1 set gradually from front to back before described
With bent moon negative lens A-2；Group eyeglass B includes the bent moon positive lens B-1 set gradually from front to back, by biconvex lens B- after described
The gluing unit of 2 and bent moon negative lens B-3 contiguity.
2. a kind of 3.24mm focal length automobile data recorder high definition camera lens according to claim 1, it is characterised in that: described preceding group
Airspace between eyeglass A and rear group eyeglass B is 0.63mm.
3. a kind of 3.24mm focal length automobile data recorder high definition camera lens according to claim 1, it is characterised in that: described preceding group
Airspace in eyeglass A between bent moon negative lens A-1 and bent moon negative lens A-2 is 2.73 mm, the bent moon negative lens A-2
Airspace between bent moon positive lens B-1 is 0.7 mm；It is described after group eyeglass B in bent moon positive lens B-1 with by lenticular
Airspace between the gluing unit of mirror B-2 and bent moon negative lens B-3 contiguity is 0.1 mm.
4. a kind of 3.24mm focal length automobile data recorder high definition camera lens according to claim 1, it is characterised in that: by lenticular
The rear of the gluing unit of mirror B-2 and bent moon negative lens B-3 contiguity is provided with optical filter.
5. a kind of 3.24mm focal length automobile data recorder high definition camera lens according to claim 1, it is characterised in that: the bent moon
Be provided with the first spacer ring between negative lens A-2 and bent moon positive lens B-1, the bent moon negative lens A-2 and bent moon positive lens B-1 it
Between be provided with the second spacer ring, be provided with third spacer ring between the bent moon positive lens B-1 and gluing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233063.8U CN209343025U (en) | 2018-12-28 | 2018-12-28 | A kind of 3.24mm focal length automobile data recorder high definition camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233063.8U CN209343025U (en) | 2018-12-28 | 2018-12-28 | A kind of 3.24mm focal length automobile data recorder high definition camera lens |
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|---|---|
| CN209343025U true CN209343025U (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822233063.8U Active CN209343025U (en) | 2018-12-28 | 2018-12-28 | A kind of 3.24mm focal length automobile data recorder high definition camera lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633862A (en) * | 2018-12-28 | 2019-04-16 | 福建福光天瞳光学有限公司 | A kind of 3.24mm focal length automobile data recorder high definition camera lens and its imaging method |
-
2018
- 2018-12-28 CN CN201822233063.8U patent/CN209343025U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633862A (en) * | 2018-12-28 | 2019-04-16 | 福建福光天瞳光学有限公司 | A kind of 3.24mm focal length automobile data recorder high definition camera lens and its imaging method |
| CN109633862B (en) * | 2018-12-28 | 2023-07-21 | 福建福光天瞳光学有限公司 | High-definition lens of 3.24mm focal length automobile data recorder and imaging method thereof |
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