CN206573767U - A kind of super large aperture high-definition fixed-focus camera lens - Google Patents
A kind of super large aperture high-definition fixed-focus camera lens Download PDFInfo
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- CN206573767U CN206573767U CN201720055270.1U CN201720055270U CN206573767U CN 206573767 U CN206573767 U CN 206573767U CN 201720055270 U CN201720055270 U CN 201720055270U CN 206573767 U CN206573767 U CN 206573767U
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Abstract
The utility model belongs to field of optical device technology, more particularly to a kind of super large aperture high-definition fixed-focus camera lens, including the first lens being arranged in order from the object side to the image side, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, 7th lens and the 8th lens, first lens are plano-concave negative power glass spherical lens, second lens are concavo-convex negative power plastic aspheric lens, 3rd lens are biconvex positive light coke glass spherical lens, 4th lens are biconvex positive light coke glass spherical lens, 5th lens are concave-concave negative power glass spherical lens, 6th lens are biconvex positive light coke glass spherical lens, 7th lens are concavo-convex positive light coke plastic aspheric lens, 8th lens are convex-concave positive light coke plastic aspheric lens；The super large aperture high-definition fixed-focus camera lens that the utility model is provided has bigger aperture, smaller volume, higher pixel, so as to realize real starlight level camera, and then drives the development of security protection industry, wide market.
Description
Technical field
The utility model belongs to field of optical device technology, more particularly to a kind of super large aperture high-definition fixed-focus camera lens.
Background technology
How to improve the quality monitoring under night and poor light condition is security protection industry a great problem.Existing solution is
Install infrared light compensating lamp additional on video camera, infrared light compensating lamp is opened when ambient brightness is relatively low, and simultaneous camera is switched to infrared
Pattern.Current this mode of operation is most commonly seen pattern, and its advantage is the relatively simple easy realization of solution.But take the photograph
Picture is black and white when camera works under infrared mode, and color information is all lost, and infrared light compensating lamp sphere of action is limited,
It is still very dark outside effective range, simultaneously because infrared lamp produces the longevity that substantial amounts of heat will significantly shorten video camera
Life.This pattern can not gradually adapt to demand of the society to high-quality monitoring.
With the development of electronic technology occur in that it is a kind of there is highly sensitive imager chip to light, compared with common chip
Say that it has been obviously improved signal to noise ratio.If the brightness of image that the camera lens of collocation large aperture will be greatly promoted under poor light condition so that night
Between realize that colour picture monitoring becomes possibility, be referred to as starlight grade camera in security protection industry this concept.
But common its maximum ring of large aperture camera lens only F1.4 on the market at present, resolution is no more than 3,000,000 pictures
Element, still has too many difficulties to cope with for starlight level video camera.Only a few maximum ring can reach that F1.2 camera lens is generally also
Bulky, optics overall length reaches more than 50mm, while resolution is no more than two mega pixels, expensive practicality is poor.
In view of this, it is necessory to provide a kind of super large aperture high-definition fixed-focus camera lens, it has bigger aperture, smaller
Volume, higher pixel, so as to realize real starlight level camera, and then drive the development of security protection industry, wide market.
Utility model content
The purpose of this utility model is：In view of the shortcomings of the prior art, a kind of super large aperture high-definition fixed-focus mirror is provided
Head, it has bigger aperture, smaller volume, higher pixel, so as to realize real starlight level camera, and then drives peace
The development of anti-industry, wide market.
In order to achieve the above object, the utility model is adopted the following technical scheme that：
A kind of super large aperture high-definition fixed-focus camera lens, including be arranged in order from the object side to the image side the first lens, the second lens,
3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, first lens are that plano-concave bears light
Focal power glass spherical lens, second lens are concavo-convex negative power plastic aspheric lens, and the 3rd lens are biconvex
Positive light coke glass spherical lens, the 4th lens are biconvex positive light coke glass spherical lens, and the 5th lens are double
Recessed negative power glass spherical lens, the 6th lens are biconvex positive light coke glass spherical lens, and the 7th lens are
Concavo-convex positive light coke plastic aspheric lens, the 8th lens are convex-concave positive light coke plastic aspheric lens；
3rd lens, the 4th lens, the focal length of the 5th lens and the 6th lens and whole camera lens
The ratio of focal length meet following condition：
1 ＜ | f3/f | ＜ 3；
1 ＜ | f4/f | ＜ 3；
0.3 ＜ | f5/f | ＜ 1.5；
0.5 ＜ | f6/f | ＜ 2；
Wherein, f is the focal length of whole camera lens；F3 is the focal length of the 3rd lens；F4 is the focal length of the 4th lens；
F5 is the focal length of the 5th lens；F6 is the focal length of the 6th lens.
Improved as one kind of the utility model super large aperture high-definition fixed-focus camera lens, it is second lens, the described 7th saturating
The ratio of the focal length of mirror and the 8th lens and the focal length of whole camera lens meets following condition：
5 ＜ | f2/f | ＜ 30；
10 ＜ | f7/f | ＜ 30；
1.5 ＜ | f8/f | ＜ 5；
Wherein, f is the focal length of whole camera lens；F2 is the focal length of second lens；F7 is the focal length of the 7th lens；
F8 is the focal length of the 8th lens.
Improved as one kind of the utility model super large aperture high-definition fixed-focus camera lens, it is the 4th lens, the described 5th saturating
Mirror and the 6th lens are bonded as one group of lens, and the focal length fe and whole camera lens of this group of lens focal length by optical cement
F ratio meets following condition：4 ＜ | fe/f | ＜ 10.
Improved as one kind of the utility model super large aperture high-definition fixed-focus camera lens, first lens and described second saturating
Mirror is directly bearing on.
Improved as one kind of the utility model super large aperture high-definition fixed-focus camera lens, second lens and described 3rd saturating
Mirror is by spacer ring close-fitting, and the 3rd lens and the 4th lens are by spacer ring close-fitting, the 6th lens and the described 7th
Lens pass through spacer ring close-fitting by spacer ring close-fitting, the 7th lens and the 8th lens.
Improved as one kind of the utility model super large aperture high-definition fixed-focus camera lens, first lens are to the described 8th saturating
Focal length, refractive index and the radius of curvature of mirror meet following condition：
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius of curvature, and "-" number represents that direction is negative；
Wherein, f1 to f8 corresponds respectively to first lens to the focal length of the 8th lens；N1 to n8 is corresponded to respectively
In the refractive index of first lens to the 8th lens；R1, R3, R5, R7, R9, R11, R13 and R15 correspond respectively to institute
The first lens are stated to the radius of curvature of the one side of the close object space of the 8th lens, R2, R4, R6, R8, R10, R12, R14 and
R16 corresponds respectively to first lens to the radius of curvature of the one side of the remote object space of the 8th lens.
Improved as one kind of the utility model super large aperture high-definition fixed-focus camera lens, the overall length of the camera lens is less than 32mm.
Relative to prior art, the utility model has the following advantages：
First, the second lens of the present utility model, the 7th lens and the 8th lens employ glass lens, accomplished it is low into
Sheet and high-performance, the cost of glass lens are far below glass spheric glass, so reduce cost；Again due to of the present utility model
Second lens, the 7th lens and the 8th lens employ aspherical lens, and performance is improved compared to traditional spheric glass.
Second, the utility model adds the structure of 3 plastic aspherical element eyeglasses using 5 glass spheric glasses, by reasonable
F0.98 large apertures can be reached using the combination of glass spheric glass and plastic aspherical element eyeglass, also can be under poor light condition
The picture clearly become clear, image quality is good, and clearly bright monitored picture, maximum 1/ can be also realized under night low-light (level)
2.5 " image planes, six mega pixel resolution ratio, optics overall length is less than 32mm, small volume.The utility model, which is combined, commonly to be focused
Camera lens small volume high resolution and the bigger advantage of traditional large aperture camera lens thang-kng amount.The structure for moulding mixing as a result of glass is big
It is big to reduce cost with production difficulty so that the utility model and conventional camera lens ratio more advantage.
3rd, the utility model passes through reasonably optimizing, it is possible to achieve temperature compensation function, i.e., in -30 °~+80 ° of environment
Lower use does not run Jiao.
In a word, the super large aperture high-definition fixed-focus camera lens that the utility model is provided has bigger aperture, smaller volume, more
High pixel, so as to realize real starlight level camera, and then drives the development of security protection industry, wide market.
Brief description of the drawings
Fig. 1 is optical texture schematic diagram of the present utility model.
Fig. 2 is assembling assumption diagram of the present utility model.
Embodiment
The utility model and its advantage are described in further detail below with reference to specific embodiment, still,
Embodiment of the present utility model is not limited thereto.
As depicted in figs. 1 and 2, the utility model provide a kind of super large aperture high-definition fixed-focus camera lens, including from object space to
The first lens 1 that image space is arranged in order, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6,
Seven lens 7 and the 8th lens 8, the first lens 1 are plano-concave negative power glass spherical lens, and the second lens 2 are concavo-convex negative light focus
Plastic aspheric lens are spent, the 3rd lens 3 are biconvex positive light coke glass spherical lens, and the 4th lens 4 are biconvex positive light coke
Glass spherical lens, the 5th lens 5 are concave-concave negative power glass spherical lens, and the 6th lens 6 are biconvex positive light coke glass
Spherical lens, the 7th lens 7 are concavo-convex positive light coke plastic aspheric lens, and the 8th lens 8 are that convex-concave positive light coke plastics are non-
Spherical lens；
3rd lens 3, the 4th lens 4, the ratio of the focal length of the 5th lens 5 and the 6th lens 6 and the focal length of whole camera lens
Meet following condition：
1 ＜ | f3/f | ＜ 3；
1 ＜ | f4/f | ＜ 3；
0.3 ＜ | f5/f | ＜ 1.5；
0.5 ＜ | f6/f | ＜ 2；
Wherein, f is the focal length of whole camera lens；F3 is the focal length of the 3rd lens 3；F4 is the focal length of the 4th lens 4；F5 is
The focal length of five lens 5；F6 is the focal length of the 6th lens 6.3rd lens 3, the 4th lens 4, the 5th lens 5 and the 6th lens 6
When the ratio of focal length and the focal length of whole camera lens meets conditions above, it is possible to achieve miniaturization, high-performance.
The ratio of the focal length of second lens 2, the 7th lens 7 and the 8th lens 8 and the focal length of whole camera lens meets following article
Part：
5 ＜ | f2/f | ＜ 30；
10 ＜ | f7/f | ＜ 30；
1.5 ＜ | f8/f | ＜ 5；
Wherein, f is the focal length of whole camera lens；F2 is the focal length of the second lens 2；F7 is the focal length of the 7th lens 7；F8 is
The focal length of eight lens 8.
The ratio of the focal length of second lens 2, the 7th lens 7 and the 8th lens 8 and the focal length of whole camera lens meets the above article
During part, it is possible to achieve high/low temperature is confocal.
4th lens 4, the 5th lens 5 and the 6th lens 6 are bonded as one group of lens by optical cement, and this group of lens
The ratio of focal length and the focal length of whole camera lens meets following condition：4 ＜ | fe/f | ＜ 10.Due to the 4th lens 4, the 5th lens 5
One group of lens is bonded as by optical cement with the 6th lens 6, therefore the utility model is actually the tight shot of 6 groups 8.The
Four lens 4, the 5th lens 5 and the 6th lens 6 can reduce assembly difficulty by way of optics glue bond, reduce volume.
First lens 1 and the second lens 2 are directly bearing on.Second lens 2 and the 3rd lens 3 are saturating by spacer ring close-fitting, the 3rd
The lens 4 of mirror 3 and the 4th are by spacer ring close-fitting, and the 6th lens 6 and the 7th lens 7 are by spacer ring close-fitting, and the 7th lens 7 and the 8th are saturating
Mirror 8 passes through spacer ring close-fitting.
Focal length, refractive index and the radius of curvature of the lens 8 of first lens 1 to the 8th meet following condition：
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius of curvature, and "-" number represents that direction is negative；
Wherein, f1 to f8 corresponds respectively to the focal length of the lens 8 of the first lens 1 to the 8th；N1 to n8 corresponds respectively to first
The refractive index of the lens 8 of lens 1 to the 8th；R1, R3, R5, R7, R9, R11, R13 and R15 correspond respectively to the first lens 1 to the 8th
The radius of curvature of the one side of the close object space of lens 8, it is saturating that R2, R4, R6, R8, R10, R12, R14 and R16 correspond respectively to first
The radius of curvature of the one side of the remote object space of the lens 8 of mirror 1 to the 8th.
The overall length of camera lens is less than 32mm.
Embodiment 1
As depicted in figs. 1 and 2, a kind of super large aperture high-definition fixed-focus camera lens is present embodiments provided, including from object space to picture
The first lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens the 6, the 7th that side is arranged in order
The lens 8 of lens 7 and the 8th, the first lens 1 are plano-concave negative power glass spherical lens, and the second lens 2 are concavo-convex negative power
Plastic aspheric lens, the 3rd lens 3 are biconvex positive light coke glass spherical lens, and the 4th lens 4 are biconvex positive light coke glass
Glass spherical lens, the 5th lens 5 are concave-concave negative power glass spherical lens, and the 6th lens 6 are biconvex positive light coke glass marble
Face lens, the 7th lens 7 are concavo-convex positive light coke plastic aspheric lens, and the 8th lens 8 are convex-concave positive light coke plastics aspheric
Face lens.
Face type, radius of curvature R, lens thickness, eyeglass spacing, lens index nd and the K value of each lens meet respectively with
Lower condition (table 1)：
Table 1：The physical parameter of each lens
In table 1, " R " is radius of curvature, and "-" number represents that direction is negative, and " PL " represents plane, and upper table the same face sequence number is existing
Refractive index data nd, has data D, data D to represent the thickness at the lens axial line again, the same face sequence number there was only data D and
There is no refractive index data nd, data D to represent the lens to the spacing of next lens face.It is saturating that face sequence number 1 and 2 corresponds to first respectively
The face towards the face of object space and towards image space of mirror 1；Face sequence number 3 and 4 correspond to respectively the second lens 2 towards the face of object space and court
To the face of image space；Face sequence number 5 and 6 corresponds to the face towards the face of object space and towards image space of the 3rd lens 3 respectively；Face sequence number 7 and 8
The face towards the face of object space and towards image space of the 4th lens 4 is corresponded to respectively；Face sequence number 9 and 10 corresponds to the 5th lens 5 respectively
Face towards the face of object space and towards image space, face sequence number 11 and 12 correspond to respectively the 6th lens 6 towards the face of object space and direction
The face of image space, face sequence number 13 and 14 corresponds to the face towards the face of object space and towards image space of the 7th lens 7, the He of face sequence number 15 respectively
16 correspond to the face towards the face of object space and towards image space of the 8th lens 8 respectively.
The face of face serial number 3,4,13,14,15 and 16 is aspherical in table 1, and aspherical lens meet equation below：
Wherein：Wherein c=1/R, k are the K values in table 1.
Aspherical face shape parameter is shown in Table 2 in the present embodiment：
Table 2：The aspherical parameter on the surface of the 3rd, 4,13,14,15 and 16.
| Face sequence number：3 | Face sequence number：4 | Face sequence number：13 | Face sequence number：14 | Face sequence number：15 | Face sequence number：16 | |
| The parameters of α 1 | -6.258E-003 | 2.365E-004 | -5.184E-003 | -2.254E-004 | -9.241E-003 | 8.594E-003 |
| The parameters of α 2 | -5.121E-004 | -8.241E-004 | 8.241E-004 | 2.584E-003 | -8.241E-005 | 7.241E-004 |
| The parameters of α 3 | -5.241E-004 | 2.541E-006 | 5.271E-004 | 4.284E-004 | -8.574E-004 | 2.247E-005 |
| The parameters of α 4 | -9.274E-005 | -4.274E-006 | 2.574E-005 | -2.674E-006 | -9.274E-007 | 3.274E-006 |
| The parameters of α 5 | -6.274E-008 | 8.584E-007 | 5.274E-006 | -5.274E-006 | -3.274E-007 | -2.274E-008 |
| The parameters of α 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| The parameters of α 7 | 0 | 0 | 0 | 0 | 0 | 0 |
| The parameters of α 8 | 0 | 0 | 0 | 0 | 0 | 0 |
In a word, the utility model has the following advantages：
First, the second lens 2 of the present utility model, the 7th lens 7 and the 8th lens 8 employ glass lens, accomplish
Low cost and high-performance, the cost of glass lens are far below glass spheric glass, so reduce cost；Again because this practicality is new
The second lens 2, the 7th lens 7 and the 8th lens 8 of type employ aspherical lens, are improved compared to traditional spheric glass
Performance.
Second, the utility model adds the structure of 3 plastic aspherical element eyeglasses using 5 glass spheric glasses, by reasonable
F0.98 large apertures can be reached using the combination of glass spheric glass and plastic aspherical element eyeglass, also can be under poor light condition
The picture clearly become clear, image quality is good, and clearly bright monitored picture, maximum 1/ can be also realized under night low-light (level)
2.5 " image planes, six mega pixel resolution ratio, optics overall length is less than 32mm, small volume.The utility model, which is combined, commonly to be focused
Camera lens small volume high resolution and the bigger advantage of traditional large aperture camera lens thang-kng amount.The structure for moulding mixing as a result of glass is big
It is big to reduce cost with production difficulty so that the utility model and conventional camera lens ratio more advantage.
3rd, the utility model passes through reasonably optimizing, it is possible to achieve temperature compensation function, i.e., in -30 °~+80 ° of environment
Lower use does not run Jiao.
In a word, the super large aperture high-definition fixed-focus camera lens that the utility model is provided has bigger aperture, smaller volume, more
High pixel, so as to realize real starlight level camera, and then drives the development of security protection industry, wide market.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying carries out appropriate change and modification.Therefore, the utility model is not limited to specific implementation disclosed and described above
Some modifications and changes of the present utility model should also be as falling into scope of the claims of the present utility model by mode.
Although in addition, used some specific terms in this specification, these terms merely for convenience of description, not to this reality
With any limitation of new composition.
Claims (7)
1. a kind of super large aperture high-definition fixed-focus camera lens, it is characterised in that：Including be arranged in order from the object side to the image side the first lens,
Second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, first lens
For plano-concave negative power glass spherical lens, second lens are concavo-convex negative power plastic aspheric lens, the described 3rd
Lens are biconvex positive light coke glass spherical lens, and the 4th lens are biconvex positive light coke glass spherical lens, described the
Five lens are concave-concave negative power glass spherical lens, and the 6th lens are biconvex positive light coke glass spherical lens, described
7th lens are concavo-convex positive light coke plastic aspheric lens, and the 8th lens are that convex-concave positive light coke plastic aspherical element is saturating
Mirror；
3rd lens, the 4th lens, Jiao of the focal length of the 5th lens and the 6th lens and whole camera lens
Away from ratio meet following condition：
1 ＜ | f3/f | ＜ 3；
1 ＜ | f4/f | ＜ 3；
0.3 ＜ | f5/f | ＜ 1.5；
0.5 ＜ | f6/f | ＜ 2；
Wherein, f is the focal length of whole camera lens；F3 is the focal length of the 3rd lens；F4 is the focal length of the 4th lens；F5 is
The focal length of 5th lens；F6 is the focal length of the 6th lens.
2. super large aperture high-definition fixed-focus camera lens according to claim 1, it is characterised in that：Second lens, described
The ratio of the focal length of seven lens and the 8th lens and the focal length of whole camera lens meets following condition：
5 ＜ | f2/f | ＜ 30；
10 ＜ | f7/f | ＜ 30；
1.5 ＜ | f8/f | ＜ 5；
Wherein, f is the focal length of whole camera lens；F2 is the focal length of second lens；F7 is the focal length of the 7th lens；F8 is
The focal length of 8th lens.
3. super large aperture high-definition fixed-focus camera lens according to claim 1, it is characterised in that：4th lens, described
Five lens and the 6th lens are bonded as one group of lens, and the focal length fe and whole camera lens of this group of lens by optical cement
Focal length f ratio meets following condition：4 ＜ | fe/f | ＜ 10.
4. super large aperture high-definition fixed-focus camera lens according to claim 3, it is characterised in that：First lens and described the
Two lens are directly bearing on.
5. super large aperture high-definition fixed-focus camera lens according to claim 3, it is characterised in that：Second lens and described
Three lens are by spacer ring close-fitting, and the 3rd lens and the 4th lens are by spacer ring close-fitting, the 6th lens and described
7th lens are by spacer ring close-fitting, and the 7th lens and the 8th lens pass through spacer ring close-fitting.
6. super large aperture high-definition fixed-focus camera lens according to claim 1, it is characterised in that：First lens are to described
Focal length, refractive index and the radius of curvature of eight lens meet following condition：
In upper table, " f " is focal length, and " n " is refractive index, and " R " is radius of curvature, and "-" number represents that direction is negative；
Wherein, f1 to f8 corresponds respectively to first lens to the focal length of the 8th lens；N1 to n8 corresponds respectively to institute
The first lens are stated to the refractive index of the 8th lens；R1, R3, R5, R7, R9, R11, R13 and R15 correspond respectively to described
One lens are to the radius of curvature of the one side of the close object space of the 8th lens, and R2, R4, R6, R8, R10, R12, R14 and R16 divide
Not Dui Yingyu first lens to the one side of the remote object space of the 8th lens radius of curvature.
7. super large aperture high-definition fixed-focus camera lens according to claim 1, it is characterised in that：The overall length of the camera lens is less than
32mm。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720055270.1U CN206573767U (en) | 2017-01-16 | 2017-01-16 | A kind of super large aperture high-definition fixed-focus camera lens |
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| CN201720055270.1U CN206573767U (en) | 2017-01-16 | 2017-01-16 | A kind of super large aperture high-definition fixed-focus camera lens |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741632A (en) * | 2017-11-14 | 2018-02-27 | 嘉兴中润光学科技有限公司 | Multispectral super large aperture telephotolens |
| CN107765507A (en) * | 2017-11-24 | 2018-03-06 | 中山依瓦塔光学有限公司 | The big relaying lens head of high-precision small range simulated range |
| WO2021128383A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN114609764A (en) * | 2022-03-09 | 2022-06-10 | 浙江舜宇光学有限公司 | Optical imaging system |
-
2017
- 2017-01-16 CN CN201720055270.1U patent/CN206573767U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741632A (en) * | 2017-11-14 | 2018-02-27 | 嘉兴中润光学科技有限公司 | Multispectral super large aperture telephotolens |
| CN107741632B (en) * | 2017-11-14 | 2019-08-23 | 嘉兴中润光学科技有限公司 | Multispectral super large aperture telephotolens |
| CN107765507A (en) * | 2017-11-24 | 2018-03-06 | 中山依瓦塔光学有限公司 | The big relaying lens head of high-precision small range simulated range |
| WO2021128383A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN114609764A (en) * | 2022-03-09 | 2022-06-10 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN114609764B (en) * | 2022-03-09 | 2023-10-27 | 浙江舜宇光学有限公司 | Optical imaging system |
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Inventor after: Zhang Pinguang Inventor after: He Jianwei Inventor after: Liu Guanlu Inventor after: Mao Caiying Inventor before: He Jianwei |
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