CN208297819U - The low zoom lens of high-resolution, big image planes, tolerance sensitivities - Google Patents
The low zoom lens of high-resolution, big image planes, tolerance sensitivities Download PDFInfo
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- CN208297819U CN208297819U CN201820667951.8U CN201820667951U CN208297819U CN 208297819 U CN208297819 U CN 208297819U CN 201820667951 U CN201820667951 U CN 201820667951U CN 208297819 U CN208297819 U CN 208297819U
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Abstract
The utility model relates to the low zoom lens of a kind of high-resolution, big image planes, tolerance sensitivities, are successively arranged from object side to image side: the first lens group, the focal length that focal length is positive are negative the 4th lens group and sensitive chip that the third lens group that the second lens group, iris diaphgram, focal length be positive, focal length are positive；First lens group, iris diaphgram and the third lens faciation fix sensitive chip, and the second lens group and the 4th lens group can be moved forward and backward with respect to sensitive chip；For optical system from short focus into long-focus change procedure, the second lens group is gradually mobile to the third lens group, and the 4th lens group realizes the effect of focusing relative to sensitive chip when mobile；The lens of the rear end of the lens and the third lens group of the centre of second lens group are non-spherical lens；In the present solution, its non-spherical lens setting can aberration correction, distortion is reduced, so that zoom lens obtains higher image quality.
Description
Technical field
The utility model relates to optical lens technology fields, sensitive more particularly to a kind of high-resolution, big image planes, tolerance
Spend low zoom lens.
Background technique
Zoom lens is widely applied in daily life at present, and Vehicles Collected from Market is toward the side of high-resolution and high image quality
It is bigger using pixel in order to obtain better image quality to development, the more chips of pixel be solve the problems, such as it is basic
One of approach, but current safety monitoring, monitoring road conditions device have the following disadvantages:
Common zoom lens can not often accomplish that big image planes are compatible with volume, and image planes increase can cause camera lens volume simultaneously
Change dramatically, the monitoring camera of big picture currently on the market, such as 1 " camera lens of left and right, image planes size reaches 16.0mm,
Its volume is bigger, and is mostly tight shot, is difficult to control when monitoring distance and changing；
The monitoring camera resolution ratio of the high image quality on the market of mainstream is lower at present, mostly 1080p, pixel number 2,000,000
, however as the promotion of data transmission bauds, the picture transmission of higher image quality is possibly realized, and 2,000,000 pixels cannot expire
Sufficient demand；The camera lens image planes of the 1080P of mainstream are mainly 1/2.8 at present ", use the 1/ of effective imaging face diagonal 6.2mm
2.8 " chip of CMOS, pixel size only have 2.8 μm, and resolution ratio is not very high；And due to pixel very little, sense
The performances such as photosensitiveness and color rendition are all less desirable, are badly in need of performance improvement；
Monitoring camera currently on the market, mostly non-infrared confocal camera lens, therefore the more occasion of optical wavelength section such as
When at dusk, or at night having part lighting, the picture of shooting can not be integrally clear, always has obscure portions；
Monitoring camera currently on the market seldom removes the stray light of elimination camera lens by optical texture, in intense light source or fine
It when, camera lens veiling glare phenomenon is serious, keeps camera lens actual imaging effect poor；
Lens design effectively reduces aberration using aspherical, but will increase camera lens sensibility again simultaneously, usually aspherical
More camera lenses, susceptibility is higher, and eyeglass is difficult to, and lens assembling yield is very low.
Utility model content
Based on this, it is necessary in view of the above technical problems, provide a kind of zoom lens, with reach high-resolution, small size,
Big image planes, low cost, without veiling glare and infrared confocal effect.
The low zoom lens of a kind of high-resolution, big image planes, tolerance sensitivities, is successively arranged from object side to image side:
The first lens group, the focal length that focal length is positive are negative the third lens that the second lens group, iris diaphgram, focal length are positive
The 4th lens group and sensitive chip that group, focal length are positive；
First lens group, iris diaphgram and the third lens faciation fix sensitive chip, the second lens group and the 4th lens
Group can be moved forward and backward with respect to sensitive chip；Optical system from short focus into long-focus change procedure, the second lens group gradually to
The third lens group is mobile, and the 4th lens group realizes the effect of focusing relative to sensitive chip when mobile；
The lens of the rear end of the lens and the third lens group of the centre of second lens group are non-spherical lens.
In one of the embodiments, the third lens group be successively arranged from object side to image side the 7th lens that focal length is positive,
The tenth lens that the 9th lens and focal length that the 8th lens, the focal length that focal length is negative are positive are negative；7th lens and the 9th
The Abbe number of lens is greater than or equal to 50, and the refractive index of the 8th lens is greater than or equal to 1.6, and Abbe number is less than or equal to 50, the
Spacing distance between eight lens and the 9th lens is less than or equal to 0.02mm, and the tenth lens are non-spherical lens.
The 4th lens group is successively arranged the focal length is positive the 11st from object side to image side thoroughly in one of the embodiments,
The 13rd lens that the 12nd lens and focal length that mirror, focal length are negative are positive；11st lens and the 12nd lens are glued saturating
Mirror.
The radius absolute value of the image side surface of the 13rd lens is greater than or equal to 90mm in one of the embodiments,.
The bore of the non-spherical lens is less than or equal to 19mm in one of the embodiments,.
The non-spherical lens is glass aspheric lenses in one of the embodiments,.
In one of the embodiments, the second lens group be successively arranged from object side to image side the 4th lens that focal length is negative,
The 6th lens that the 5th lens and focal length that focal length is negative are positive；The refractive index of 4th lens is greater than or equal to 1.6, and Abbe number is small
In or be equal to 50, the 5th lens be non-spherical lens.
In one of the embodiments, the first lens group be successively arranged that focal length is negative from object side to image side surface first thoroughly
The third lens that the second lens and focal length that mirror, focal length are positive are positive；First lens and the second lens are balsaming lens.
In one of the embodiments, the spacing distance between the first lens group and the third lens group be 38.6mm, second
Spacing distance between lens group and the third lens group is 2.3mm~22.6mm, between the third lens group and the 4th lens group
Spacing distance is 0.9mm~8.46mm, and the distance between the 4th lens group and sensitive chip are 16.7mm~25.1mm.
The utility model compared with prior art, has at least the following advantages:
1, the zoom lens of the utility model has been used containing 13 pieces of lens including 2 pieces of aspherical glass lens, less
Higher quality, and small volume are obtained in the case where quantity, the transmitance of camera lens is also higher；
2, camera lens FNO=EFL/D, wherein EFL is focal length, and D is diaphragm diameter；For imaging lens, diaphragm diameter is bigger,
Light passing amount is bigger；It is just more different than less going out FNO numerical value at this time due to sensor meeting adjust automatically exposure value under general environment
The quality of camera lens, but under the environmental condition of low-light (level), exposure sensor has arrived the limit, therefore the camera lens ratio that FNO numerical value is small
Preferably performance；The zoom lens of the utility model uses iris diaphgram, and reaches 1.7 in nearly coke end FNO, at focal length end
FNO reaches 2.5, there is high photosensitive property, in the case where adjusting aperture variation, is suitble to use under a variety of illuminating positions, also
Adjustable clarity improves lens effect；
3, the zoom lens of the utility model uses glass aspheric lenses, and plastic aspheric lens, therefore temperature is not used
Degree variation influences very little to the performance of camera lens, can be used in a variety of contexts；
4, the zoom lens of the utility model has used 4 lens groups, and the interval between 4 lens groups is variation,
The variation at the interval between preceding 3 lens groups makes the focal length of camera lens change, the 4th lens group for realizing focus function,
Camera lens reaches 12mm in short focus focal length, and focal length focal length is greater than 40mm；
5, the entire camera lens of the utility model is using the first lens group as highest point, and between the first lens group and sensitive chip
Distance be it is not changed, height be less than 110mm, use 1 " in the camera lens of CCD, small volume；
6, the utility model can be realized the resolution ratio higher than 12,000,000 pixels, by the 1 of 16.05mm " CCD for, this
Utility model can achieve center resolution higher than 180lp/mm, periphery 0.7H (70% diagonal positions) high resolution in
The effect of 1800tvline；
7, the zoom lens of the utility model realizes AF automatic focusing function using the 4th lens group, from farthest infinity
Can be at clearly image to nearest 1500mm microspur, imaging effect is good；
8, the camera lens of the utility model realizes whole infrared confocal, in visible wavelength section 430nm-650nm and infrared
Lamp wavelength period 830nm-870nm can reach clearly simultaneously, therefore existing for a variety of wave bands under the conditions of keeps picture entirety all clear
It is clear；
9, Glass aspheric eyeglass bore is both less than 19mm in the utility model, and the bore of the third lens group is minimum, at
This is low, is easy to marketing；
10, the utility model has only used two pieces of glass aspheric lenses, so that camera lens susceptibility reduces, eyeglass is easy to add
Work, lens assembling yield greatly increase.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
Specific embodiment
It is further described below in conjunction with Fig. 1:
The low zoom lens of a kind of high-resolution, big image planes, tolerance sensitivities, is successively arranged from object side to image side:
The first lens group 1, the focal length that focal length the is positive third that the second lens group 2, iris diaphgram 6, focal length are positive that is negative are saturating
The 4th lens group 4 and sensitive chip 5 that lens group 3, focal length are positive；
First lens group 1, iris diaphgram 6 and the third lens group 3 are fixed with respect to sensitive chip 5, the second lens group 2 and the 4th
Lens group 4 can be moved forward and backward with respect to sensitive chip 5, optical system from short focus into long-focus change procedure, the second lens group 2
Gradually mobile to the third lens group 3, the 4th lens group 4 realizes the effect of focusing relative to sensitive chip 5 when mobile；
Lens among second lens group 2 are non-spherical lens, can be reduced distortion with aberration correction, obtain camera lens
High image quality；
The lens of the rear end of the third lens group 3 be non-spherical lens, can with aberration correction, make optical system obtain it is high at
Image quality amount；
Wherein, the surface shape of above-mentioned non-spherical lens meets following relationship:
In formula, parameter c is curvature corresponding to radius, and r is radial coordinate, and unit is identical with length of lens unit, and k is
Circular cone whose conic coefficient, when k-factor is less than -1, face shape curve is hyperbola, is parabola when k-factor is equal to -1, works as k
It is ellipse when coefficient is between -1 to 0, is circle when k-factor is equal to 0, is oblateness, α 1 to α 8 when k-factor is greater than 0
Coefficient corresponding to each radial coordinate is respectively indicated, the geomery of non-spherical lens can be accurately set by the above parameter.
The third lens group 3 is successively arranged the 7th lens that focal length is positive from object side to image side in one of the embodiments,
301, the tenth lens 304 that the 9th lens 303 and focal length that the 8th lens 302, the focal length that focal length is negative are positive are negative；Described
The Abbe number of seven lens 301 and the 9th lens 303 is higher, is all larger than or equal to 50, the refractive index of the 8th lens 302 is higher, greatly
In or be equal to 1.6, Abbe number is lower, be less than or equal to 50, the spacing distance between the 8th lens 302 and the 9th lens 303 is small
In or equal to 0.02mm, the tenth lens 304 are non-spherical lens；Under the collective effect of four pieces of lens, it can effectively reduce abnormal
Become, at the same also can correcting chromatic aberration, achieve the effect that infrared light and visible light with confocal.
The 4th lens group 4 is successively arranged the focal length is positive the 11st from object side to image side thoroughly in one of the embodiments,
The 13rd lens 403 that the 12nd lens 402 and focal length that mirror 401, focal length are negative are positive；11st lens 401 and the 12nd
Lens 402 are balsaming lens, can play the effect of focusing, the positive and negative composite structure of the 4th each piece of the lens group focal length of lens, can be with
Effectively reduce the aberration variation of optical system in zooming procedure.
The image side surface of the 13rd lens 403 is greater than close to plane, radius absolute value in one of the embodiments,
Or it is equal to 90mm, and it eliminates camera lens and a possibility that veiling glare occurs, significant increase imaging effect.
The bore of the non-spherical lens is less than or equal to 19mm in one of the embodiments, at low cost, is easy to city
It promotes field.
The non-spherical lens is glass aspheric lenses in one of the embodiments, and it is saturating that plastic aspherical element is not used
Mirror, therefore temperature change influences very little to the performance of camera lens, can be used in a variety of contexts.
The second lens group 2 is successively arranged the 4th lens that focal length is negative from object side to image side in one of the embodiments,
201, the 6th lens 203 that the 5th lens 202 and focal length that focal length is negative are positive；4th lens 201 are high refractive index, high dispersion
Lens made of material, refractive index are greater than or equal to 1.6, and Abbe number is less than or equal to 50, can effectively correct optical system
It unites in the distortion at short focus end, while the resolution ratio under short focus state can be greatly improved, the 5th lens 202 are non-spherical lens.
The focal length of the first lens 101 is negative in one of the embodiments, and the focal length of the second lens 102 is positive, and third is saturating
The focal length of mirror 103 is positive；First lens 101 and the second lens 102 are balsaming lens.
The spacing distance between the first lens group 1 and the third lens group 3 is 38.6mm in one of the embodiments, the
Spacing distance between two lens groups 2 and the third lens group 3 is 2.3mm~22.6mm, the third lens group 3 and the 4th lens group 4
Between spacing distance be 0.9mm~8.46mm, the distance between the 4th lens group 4 and sensitive chip 5 for 16.7mm~
25.1mm。
As shown in table 1, it is an actual design case of the utility model:
| Face | Type | Radius | Thickness | Material | K value |
| 101a | Spherical surface | 108.182 | 1.200 | ZF7L | 0.000 |
| 101b/102a | Spherical surface | 48.401 | 8.605 | HZPK5 | 0.000 |
| 102b | Spherical surface | -572.407 | 0.080 | 0.000 | |
| 103a | Spherical surface | 36.121 | 5.907 | HLAK53A | 0.000 |
| 103b | Spherical surface | 92.585 | 0.704 | 0.000 | |
| 201a | Spherical surface | 95.477 | 0.700 | HLAF50B | 0.000 |
| 201b | Spherical surface | 11.752 | 8.826 | 0.000 | |
| 202a | It is aspherical | -46.312 | 3.000 | MBACD5N | -1.134 |
| 202b | It is aspherical | 16.817 | 0.842 | 11.006 | |
| 203a | Spherical surface | 53.262 | 2.591 | HZLAF90 | 0.000 |
| 203b | Spherical surface | -68.882 | 19.896 | 0.000 | |
| 6 | Spherical surface | infinity | 2.100 | 0.000 | |
| 301a | Spherical surface | 15.199 | 2.700 | FCD100 | 0.000 |
| 301b | Spherical surface | 49.429 | 5.607 | 0.000 | |
| 302a | Spherical surface | -23.978 | 0.700 | H-TF3 | 0.000 |
| 302b | Spherical surface | 84.682 | 0.020 | 0.000 | |
| 303a | Spherical surface | 19.718 | 4.370 | H-QK3L | 0.000 |
| 303b | Spherical surface | -22.211 | 0.022 | 0.000 | |
| 304a | It is aspherical | -19.065 | 1.200 | M-BACD15 | -5.816 |
| 304b | It is aspherical | -32.687 | 8.573 | 1.189 | |
| 401a | Spherical surface | 17.740 | 5.717 | FCD505 | 0.000 |
| 401b/402a | Spherical surface | -29.127 | 3.502 | HF1 | 0.000 |
| 402b | Spherical surface | 15.992 | 2.345 | 0.000 | |
| 403a | Spherical surface | 20.037 | 3.471 | MFCD500 | 0.000 |
| 403b | Spherical surface | -94.18 | 2.724 | 0.000 | |
| Protect glass | Spherical surface | infinity | 0.450 | H-K9L | 0.000 |
| Protect glass | Spherical surface | infinity | 0.900 | H-K9L | 0.000 |
| 5 | Spherical surface | infinity | 1.300 | 0.000 | |
| 5 | Spherical surface | infinity | 0.000 | 0.000 |
Table 1
As shown in table 2, it is the asphericity coefficient of each non-spherical lens in one actual design case of the utility model:
Table 2
Claims (9)
1. the low zoom lens of a kind of high-resolution, big image planes, tolerance sensitivities, it is characterised in that: successively from object side to image side
It is equipped with:
The first lens group (1), the focal length that focal length is positive are negative the third that the second lens group (2), iris diaphgram (6), focal length are positive
The 4th lens group (4) and sensitive chip (5) that lens group (3), focal length are positive；
First lens group (1), iris diaphgram (6) and the third lens group (3) are fixed with respect to sensitive chip (5), the second lens group (2)
It can opposite sensitive chip (5) back-and-forth motion with the 4th lens group (4)；Optical system from short focus into long-focus change procedure,
Second lens group (2) is gradually mobile to the third lens group (3), realization pair when the 4th lens group (4) is mobile relative to sensitive chip (5)
Burnt effect；
The lens of the rear end of the lens and the third lens group (3) of the centre of second lens group (2) are non-spherical lens；
First lens group (1) includes: the first lens, and with a thickness of 1.2, material ZF7L, object side radius is 108.182, as
Side radius is 48.401；Second lens, with a thickness of 8.605, material HZPK5, object side radius is 48.401, image side surface half
Diameter is -572.407；The third lens, with a thickness of 5.907, material HLAK53A, object side radius is 36.121, image side radius surface
It is 92.585；
Second lens group (2) includes: the 4th lens, and with a thickness of 0.7, material HLAF50B, object side radius is 95.477,
Image side radius surface is 11.752；5th lens, with a thickness of 3, material MBACD5N, object side radius is -46.312, image side surface
Radius is 16.817；6th lens, with a thickness of 2.591, material HZLAF90, object side radius is 53.262, image side radius surface
It is -68.882；
The third lens group (3) includes: the 7th lens, and with a thickness of 2.7, material FCD100, object side radius is 15.199, as
Side radius is 49.429；8th lens, with a thickness of 0.7, material H-TF3, object side radius is -23.978, image side surface half
Diameter is 84.682；9th lens, with a thickness of 4.37, material H-QK3L, object side radius is 19.718, image side radius surface is-
22.211；Tenth lens, with a thickness of 1.2, material M-BACD15, object side radius is -19.065, image side radius surface is -
32.687；
4th lens group (4) includes: the 11st lens, and with a thickness of 5.717, material FCD505, object side radius is
17.74, image side radius surface is -29.127；12nd lens, with a thickness of 3.502, material HF1, object side radius is-
29.127, image side radius surface is 15.992；13rd lens, with a thickness of 3.471, material MFCD500, object side radius is
20.037, image side radius surface is -94.18.
2. the low zoom lens of high-resolution according to claim 1, big image planes, tolerance sensitivities, it is characterised in that: the
Three lens groups (3) are successively arranged the 8th lens that the 7th lens (301), the focal length that focal length is positive are negative from object side to image side
(302), the tenth lens (304) that the 9th lens (303) and focal length that focal length is positive are negative；7th lens (301) and
The Abbe number of nine lens (303) is greater than or equal to 50, and the refractive index of the 8th lens (302) is greater than or equal to 1.6, and Abbe number is less than
Or it is equal to 50, the spacing distance between the 8th lens (302) and the 9th lens (303) is less than or equal to 0.02mm, the tenth lens
It (304) is non-spherical lens.
3. the low zoom lens of high-resolution according to claim 1, big image planes, tolerance sensitivities, it is characterised in that: the
Four lens groups (4) are successively arranged the 12nd lens that the 11st lens (401), the focal length that focal length is positive are negative from object side to image side
(402) and the 13rd lens (403) that are positive of focal length；11st lens (401) and the 12nd lens (402) are balsaming lens.
4. the low zoom lens of high-resolution according to claim 3, big image planes, tolerance sensitivities, it is characterised in that: institute
The radius absolute value for stating the image side surface of the 13rd lens (403) is greater than or equal to 90mm.
5. the low zoom lens of high-resolution according to claim 1, big image planes, tolerance sensitivities, it is characterised in that: institute
The bore for stating non-spherical lens is less than or equal to 19mm.
6. the low zoom lens of high-resolution according to claim 1, big image planes, tolerance sensitivities, it is characterised in that: institute
Stating non-spherical lens is glass aspheric lenses.
7. the low zoom lens of high-resolution according to claim 1, big image planes, tolerance sensitivities, it is characterised in that: the
Two lens groups (2) are successively arranged the 5th lens that the 4th lens (201), the focal length that focal length is negative are negative from object side to image side
(202) and the 6th lens (203) that are positive of focal length；The refractive index of 4th lens (201) is greater than or equal to 1.6, and Abbe number is less than
Or it is equal to 50, the 5th lens (202) are non-spherical lens.
8. the low zoom lens of high-resolution according to claim 1, big image planes, tolerance sensitivities, it is characterised in that: the
One lens group (1) is successively arranged the second lens that the first lens (101), the focal length that focal length is negative are positive from object side to image side surface
(102) and the third lens (103) that are positive of focal length；First lens (101) and the second lens (102) are balsaming lens.
9. the low zoom lens of high-resolution according to claim 1, big image planes, tolerance sensitivities, it is characterised in that: the
Spacing distance between one lens group (1) and the third lens group (3) is 38.6mm, the second lens group (2) and the third lens group (3)
Between spacing distance be 2.3mm~22.6mm, the spacing distance between the third lens group (3) and the 4th lens group (4) is
0.9mm~8.46mm, the distance between the 4th lens group (4) and sensitive chip (5) are 16.7mm~25.1mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820667951.8U CN208297819U (en) | 2018-05-04 | 2018-05-04 | The low zoom lens of high-resolution, big image planes, tolerance sensitivities |
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| CN201820667951.8U CN208297819U (en) | 2018-05-04 | 2018-05-04 | The low zoom lens of high-resolution, big image planes, tolerance sensitivities |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501809A (en) * | 2019-09-20 | 2019-11-26 | 沈阳中一光学科技有限公司 | The digital camera silent frame micro-lens of 1-5 times of zoom |
| WO2022077602A1 (en) * | 2020-10-13 | 2022-04-21 | 诚瑞光学(深圳)有限公司 | Optical camera lens |
-
2018
- 2018-05-04 CN CN201820667951.8U patent/CN208297819U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501809A (en) * | 2019-09-20 | 2019-11-26 | 沈阳中一光学科技有限公司 | The digital camera silent frame micro-lens of 1-5 times of zoom |
| CN110501809B (en) * | 2019-09-20 | 2021-07-23 | 沈阳中一光学科技有限公司 | Full-frame macro lens of digital camera |
| WO2022077602A1 (en) * | 2020-10-13 | 2022-04-21 | 诚瑞光学(深圳)有限公司 | Optical camera lens |
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