CN204086663U - Miniature bugeye lens - Google Patents
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- CN204086663U CN204086663U CN201420472737.9U CN201420472737U CN204086663U CN 204086663 U CN204086663 U CN 204086663U CN 201420472737 U CN201420472737 U CN 201420472737U CN 204086663 U CN204086663 U CN 204086663U
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Abstract
The utility model discloses a kind of miniature bugeye lens, comprise lens barrel and in lens barrel along the first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens that object space to image space is coaxially arranged successively, and this first, second, third and fourth and five lens be spheric glass; First, second and third and four lens successively space type are arranged, and are folded with pad between its adjacent lens; The effective aperture value of the first lens is greater than 10mm, first lens are the convex curved month type eyeglass to object space, second lens are biconvex spheric glass, 3rd lens are the convex curved month type eyeglass to image space, 4th lens are biconvex spheric glass, 5th lens are the convex curved month type eyeglass to image space, and the rear surface of the 4th lens and the front surface of the 5th lens glue together each other; By this, the lens optical overall length of the product of the utility model shortens, and reduces overall volume, can have larger visual angle simultaneously, applied widely, and the processing of its lens is simple, with low cost, improves the market competitiveness.
Description
Technical field
The utility model relates to optical imaging field technology, refers in particular to a kind of miniature bugeye lens.
Background technology
In recent years, along with the range of application of pick-up lens is more and more extensive, such as, the industries such as motion DV, mobile phone camera, on-vehicle lens, safe imaging monitoring and electronic entertainment, but, the shortcoming that existing monitoring, vehicle-mounted camera lens ubiquity are such: visual angle is large not, physical dimension is but very large, use monitoring, vehicle-mounted on seem that volume comparatively greatly, takes up room more.
And coordinate the optics overall length on the high definition chip of more than 1/3rd inches to be less than the camera lens of 15mm at present, its visual angle is often less than 140 degree, the scope of captured integral image is too little to such an extent as to will fill the effect that an even several camera lens just can reach large-range monitoring more, and the cost of its total cost is higher.
In prior art, also some adopts the camera lens of 4G structure, and its structure is relatively small and exquisite, and it adopts aspheric mirror chip technology usually, in the hope of obtaining larger visual angle, but aspherical lens difficulty of processing is large, current Glass aspheric processing and detection technique there also are not universalization, and its equipment cost is very high; And moulded plastic aspheric surface can realize scale of mass production, its cost is not high yet, but performance is greatly affected by environment, and large, the logical light of its heat difference is little, smearing of image, can not meet the requirement of camera lens high-definition quality.
Therefore, be badly in need of working out a kind of new technical scheme and solve the problems referred to above.
Utility model content
In view of this, the utility model is for the disappearance of prior art existence, and its fundamental purpose is to provide a kind of miniature bugeye lens, and the total length of its lens optical, volume is little, visual angle is large, and the processing of its lens is simple, with low cost.
For achieving the above object, the utility model adopts following technical scheme:
A kind of miniature bugeye lens, include lens barrel and in lens barrel along object space to image space coaxially arrange successively the first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens, and this first, second, third and fourth and five lens be spheric glass; This first, second and third and four lens successively space type arrange, and be folded with pad between its adjacent lens;
Wherein, the effective aperture value of these the first lens is greater than 10mm, these first lens are the convex curved month type eyeglass to object space, its radius-of-curvature towards the front surface of object space is 12<R<50mm, and its radius-of-curvature towards the rear surface of image space is 2<R<2.5mm; These second lens are biconvex spheric glass, and its radius-of-curvature towards the front surface of object space is 5<R<10mm, and its radius-of-curvature towards the rear surface of image space is 8<R<30mm; 3rd lens are the convex curved month type eyeglass to image space, and the radius-of-curvature of its radius-of-curvature towards the front surface of object space and the rear surface towards image space thereof is 3<R<10mm; 4th lens are biconvex spheric glass, and its radius-of-curvature towards the front surface of object space is 4<R<12mm, and its radius-of-curvature towards the rear surface of image space is 2<R<3mm; 5th lens are the convex curved month type eyeglass to image space, its radius-of-curvature towards the front surface of object space is 2<R<3mm, and its radius-of-curvature towards the rear surface of image space is 6<R<50mm; The rear surface of the 4th lens and the front surface of the 5th lens glue together each other.
As a kind of preferred version, described lens optical overall length is less than or equal to 14.5mm.
As a kind of preferred version, it is 1.70154 that the material of described first lens adopts BAFD7, its Vd to be 41.1, Nd; It is 1.84666 that the material of these the second lens adopts FDS90, its Vd to be 23.8, Nd; It is 1.62041 that the material of the 3rd lens adopts BACD16, its Vd to be 60.3, Nd; It is 1.67003 that the material of the 4th lens adopts BaF2, its Vd to be 47.2, Nd; It is 1.92286 that the material of the 5th lens adopts S-NPH2, its Vd to be 18.9, Nd; Wherein Vd is the abbe number of each optical material, and Nd is the refraction coefficient of each optical material.
As a kind of preferred version, the radius-of-curvature of the front surface towards object space of described first lens is 26.489mm, and the radius-of-curvature of the rear surface towards image space of these the first lens is 2.20mm, and the center thickness of these the first lens is 0.55mm.
As a kind of preferred version, the radius-of-curvature of the front surface towards object space of described second lens is 7.615mm, and the radius-of-curvature of the rear surface towards image space of these the second lens is 16.603mm, and the center thickness of these the second lens is 1.30mm.
As a kind of preferred version, the radius-of-curvature of the front surface towards object space of described 3rd lens is 3.449mm, and the radius-of-curvature of the rear surface towards image space of the 3rd lens is 3.908mm, and the center thickness of the 3rd lens is 2.42mm.
As a kind of preferred version, the radius-of-curvature of the front surface towards object space of described 4th lens is 6.523mm, and the radius-of-curvature of the rear surface towards image space of the 4th lens is 2.600mm, and the center thickness of the 4th lens is 1.93mm.
As a kind of preferred version, the radius-of-curvature of the front surface towards object space of described 5th lens is 2.600mm, and the radius-of-curvature of the rear surface towards image space of the 5th lens is 7.205mm, and the center thickness of the 5th lens is 0.50mm.
As a kind of preferred version, form ink coated layer outside the sphere of the rear surface towards image space of described first lens, its ink coated layer thickness is at 5-10 μm.
As a kind of preferred version, the visual angle of described camera lens is greater than 140 degree.
The utility model compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution, it is mainly by the structural design of first, second, third and fourth and five lens, the lens optical overall length of the product of the utility model is shortened, reduce overall volume, meet miniaturization of products demand, simultaneously, it meets the requirement of high-definition quality and can have larger visual angle, be specially adapted on high definition photosensitive products, such as: motion DV, domestic security, drive recorder etc.; And first, second, third and fourth and five lens of the utility model are all designed to spherical lens, its process is simple, cost is more cheap, is conducive to improve the market competitiveness.
For more clearly setting forth architectural feature of the present utility model, technological means and the specific purposes reached thereof and function, below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:
Accompanying drawing explanation
Fig. 1 is the package assembly schematic diagram of the embodiment of the utility model;
Fig. 2 is the structural representation of lens barrel in the embodiment of the utility model;
Fig. 3 is the structural representation of the first lens in the embodiment of the utility model;
Fig. 4 (a) is the structural representation of the second lens in the embodiment of the utility model;
Fig. 4 (b) is the structural representation of the 3rd lens in the embodiment of the utility model;
Fig. 5 (a) is the structural representation of the 4th lens in the embodiment of the utility model;
Fig. 5 (b) is the structural representation of the 5th lens in the embodiment of the utility model;
Fig. 5 (c) is the structural representation that in the embodiment of the utility model, fourth, fifth lens glue together each other;
Fig. 6 is the imaging optical path schematic diagram of the embodiment of the utility model.
Accompanying drawing identifier declaration:
10, lens barrel 20, first lens
21, ink coated layer 30, second lens
40, the 3rd lens 50, the 4th lens
60, the 5th lens 70, optical filter
80, light-sensitive surface 91, pad
92, pad 93, pad
L, optics overall length θ, visual angle (wide-angle)
Embodiment
Please refer to shown in Fig. 1 to Fig. 6, that show the concrete structure of the multiple preferred embodiment of the utility model, its include lens barrel 10 and in lens barrel 2 along object space to image space coaxially arrange successively the first lens 20, second lens 300, the 3rd lens 40, the 4th lens 50 and the 5th saturating 60 mirrors, and this first, second, third and fourth and five lens be spheric glass; Wherein, this first, second and third and four lens successively space type arrange, and between its adjacent lens, be folded with pad (as shown in Fig. 1 91,92,93), spacing between these first and second lens is 1-4mm, spacing between these second and third lens is 0.2-0.8mm, and the spacing between these third and fourth lens is 0.03-0.3mm; 4th lens and the 5th lens glue together each other; Optical filter 70 and light-sensitive surface 80 (as shown in Figure 6) is provided with in the 5th lens rear.
The bore of these the first lens 20 is greater than 10mm, and its effective aperture value is also greater than 10mm, and in the present embodiment, the front end bore of aforementioned lens barrel 10 is 10.2mm, certainly, is not restricted herein, can required design be also that other is greater than the numerical value of 10mm; These first lens 20 are the convex curved month type eyeglass to object space, and its radius-of-curvature towards the front surface of object space is 12<R<50mm, in this embodiment towards the radius-of-curvature of the front surface of object space be 26.489mm; Its radius-of-curvature towards the rear surface of image space is 2<R<2.5mm, and in this embodiment, the radius-of-curvature of the rear surface towards image space of these the first lens 20 is 2.20mm, and the center thickness of these the first lens 20 is 0.55mm.It is 1.70154 that the material of these the first lens 20 adopts BAFD7, its Vd to be 41.1, Nd, and wherein, Vd is the abbe number of each optical material, and Nd is the refraction coefficient of each optical material; Plated film on the front surface of these the first lens 20 and rear surface is respectively 420-650nm, 550 ± 30nm, and forms ink coated layer 21 outside the sphere of the rear surface towards image space of the first lens, and its ink coated layer thickness is at 5-10 μm.
These second lens 30 are biconvex spheric glass, and its radius-of-curvature towards the front surface of object space is 5<R<10mm, and its radius-of-curvature towards the rear surface of image space is 8<R<30mm; In this embodiment, the radius-of-curvature of the front surface towards object space of these the second lens 30 is 7.615mm, the radius-of-curvature of the rear surface towards image space of these the second lens 30 is 16.603mm, and the center thickness of these the second lens 30 is 1.30mm, and it accounts for optics overall length 1.30/14.5=8.97%; It is 1.84666 that the material of these the second lens 30 adopts FDS90, its Vd to be 23.8, Nd; Plated film on the front surface of these the second lens 30 and rear surface is 550 ± 30nm.
3rd lens 40 are the convex curved month type eyeglass to image space, and the radius-of-curvature of its radius-of-curvature towards the front surface of object space and the rear surface towards image space thereof is 3<R<10mm; In this embodiment, the radius-of-curvature of the front surface towards object space of the 3rd lens 40 is 3.449mm, the radius-of-curvature of the rear surface towards image space of the 3rd lens 40 is 3.908mm, and the center thickness of the 3rd lens 40 is 2.42mm, and it accounts for optics overall length 2.42/14.5=16.69%; It is 1.62041 that the material of the 3rd lens 40 adopts BACD16, its Vd to be 60.3, Nd; Plated film on the front surface of the 3rd lens 40 and rear surface is 550 ± 30nm.
4th saturating 50 mirrors are biconvex spheric glass, and its radius-of-curvature towards the front surface of object space is 4<R<12mm, and its radius-of-curvature towards the rear surface of image space is 2<R<3mm; In this embodiment, the radius-of-curvature of the front surface towards object space of the 4th lens 50 is 6.523mm, the radius-of-curvature of the rear surface towards image space of the 4th lens 50 is 2.600mm, and the center thickness of the 4th lens 50 is 1.93mm, and it accounts for optics overall length 1.93/14.5=13.31%; It is 1.67003 that the material of the 4th lens 50 adopts BaF2, its Vd to be 47.2, Nd; Plated film on the front surface of the 4th lens 50 is 550 ± 30nm.
5th lens 60 are the convex curved month type eyeglass to image space, its radius-of-curvature towards the front surface of object space is 2<R<3mm, and its radius-of-curvature towards the rear surface of image space is 6<R<50mm; In this embodiment, the radius-of-curvature of the front surface towards object space of the 5th lens 60 is 2.600mm, the radius-of-curvature of the rear surface towards image space of the 5th lens 60 is 7.205mm, and the center thickness of the 5th lens 60 is 0.50mm, and it accounts for optics overall length 0.50/14.5=3.45%; It is 1.92286 that the material of the 5th lens 60 adopts S-NPH2, its Vd to be 18.9, Nd; The rear surface of the 4th lens 50 and the front surface of the 5th lens 60 glue together each other, and the plated film on the rear surface of the 5th lens 60 is 550 ± 30nm.
As shown in Figure 1, by the structural design of aforementioned first, second, third and fourth and five lens, the lens optical overall length of the product of the utility model compares conventional art, has had and has shortened largely, and this lens optical overall length L is less than or equal to 14.5mm; As shown in Figure 6, it show generally the imaging optical path schematic diagram of the present embodiment, and the view angle theta of this camera lens is comparatively large, much larger than 140 degree.
Design focal point of the present utility model is, it is mainly by the structural design of first, second, third and fourth and five lens, the lens optical overall length of the product of the utility model is shortened, reduce overall volume, meet miniaturization of products demand, meanwhile, it meets the requirement of high-definition quality and can have larger visual angle, be specially adapted on high definition photosensitive products, such as: motion DV, domestic security, drive recorder etc.; And first, second, third and fourth and five lens of the utility model are all designed to spherical lens, its process is simple, cost is more cheap, is conducive to improve the market competitiveness.
The above, it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore every above embodiment is done according to technical spirit of the present utility model any trickle amendment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a miniature bugeye lens, it is characterized in that: include lens barrel and in lens barrel along object space to image space coaxially arrange successively the first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens, and this first, second, third and fourth and five lens be spheric glass; This first, second and third and four lens successively space type arrange, and be folded with pad between its adjacent lens;
Wherein, the effective aperture value of these the first lens is greater than 10mm, these first lens are the convex curved month type eyeglass to object space, its radius-of-curvature towards the front surface of object space is 12<R<50mm, and its radius-of-curvature towards the rear surface of image space is 2<R<2.5mm; These second lens are biconvex spheric glass, and its radius-of-curvature towards the front surface of object space is 5<R<10mm, and its radius-of-curvature towards the rear surface of image space is 8<R<30mm; 3rd lens are the convex curved month type eyeglass to image space, and the radius-of-curvature of its radius-of-curvature towards the front surface of object space and the rear surface towards image space thereof is 3<R<10mm; 4th lens are biconvex spheric glass, and its radius-of-curvature towards the front surface of object space is 4<R<12mm, and its radius-of-curvature towards the rear surface of image space is 2<R<3mm; 5th lens are the convex curved month type eyeglass to image space, its radius-of-curvature towards the front surface of object space is 2<R<3mm, and its radius-of-curvature towards the rear surface of image space is 6<R<50mm; The rear surface of the 4th lens and the front surface of the 5th lens glue together each other.
2. miniature bugeye lens according to claim 1, is characterized in that: described lens optical overall length is less than or equal to 14.5mm.
3. miniature bugeye lens according to claim 1, is characterized in that: it is 1.70154 that the material of described first lens adopts BAFD7, its Vd to be 41.1, Nd; It is 1.84666 that the material of these the second lens adopts FDS90, its Vd to be 23.8, Nd; It is 1.62041 that the material of the 3rd lens adopts BACD16, its Vd to be 60.3, Nd; It is 1.67003 that the material of the 4th lens adopts BaF2, its Vd to be 47.2, Nd; It is 1.92286 that the material of the 5th lens adopts S-NPH2, its Vd to be 18.9, Nd; Wherein Vd is the abbe number of each optical material, and Nd is the refraction coefficient of each optical material.
4. miniature bugeye lens according to claim 1, it is characterized in that: the radius-of-curvature of the front surface towards object space of described first lens is 26.489mm, the radius-of-curvature of the rear surface towards image space of these the first lens is 2.20mm, and the center thickness of these the first lens is 0.55mm.
5. miniature bugeye lens according to claim 1, it is characterized in that: the radius-of-curvature of the front surface towards object space of described second lens is 7.615mm, the radius-of-curvature of the rear surface towards image space of these the second lens is 16.603mm, and the center thickness of these the second lens is 1.30mm.
6. miniature bugeye lens according to claim 1, it is characterized in that: the radius-of-curvature of the front surface towards object space of described 3rd lens is 3.449mm, the radius-of-curvature of the rear surface towards image space of the 3rd lens is 3.908mm, and the center thickness of the 3rd lens is 2.42mm.
7. miniature bugeye lens according to claim 1, it is characterized in that: the radius-of-curvature of the front surface towards object space of described 4th lens is 6.523mm, the radius-of-curvature of the rear surface towards image space of the 4th lens is 2.600mm, and the center thickness of the 4th lens is 1.93mm.
8. miniature bugeye lens according to claim 1, it is characterized in that: the radius-of-curvature of the front surface towards object space of described 5th lens is 2.600mm, the radius-of-curvature of the rear surface towards image space of the 5th lens is 7.205mm, and the center thickness of the 5th lens is 0.50mm.
9. miniature bugeye lens according to claim 1, is characterized in that: form ink coated layer outside the sphere of the rear surface towards image space of described first lens, and its ink coated layer thickness is at 5-10 μm.
10. miniature bugeye lens according to claim 1, is characterized in that: the visual angle of described camera lens is greater than 140 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472737.9U CN204086663U (en) | 2014-08-20 | 2014-08-20 | Miniature bugeye lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472737.9U CN204086663U (en) | 2014-08-20 | 2014-08-20 | Miniature bugeye lens |
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| CN204086663U true CN204086663U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420472737.9U Active CN204086663U (en) | 2014-08-20 | 2014-08-20 | Miniature bugeye lens |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765466A (en) * | 2017-11-20 | 2018-03-06 | 南京信息职业技术学院 | A kind of big visual field LCD display pixel somascope |
| CN114200616A (en) * | 2020-08-28 | 2022-03-18 | 山东省科学院激光研究所 | Wide-range chromatic dispersion confocal lens convenient to install |
-
2014
- 2014-08-20 CN CN201420472737.9U patent/CN204086663U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765466A (en) * | 2017-11-20 | 2018-03-06 | 南京信息职业技术学院 | A kind of big visual field LCD display pixel somascope |
| CN114200616A (en) * | 2020-08-28 | 2022-03-18 | 山东省科学院激光研究所 | Wide-range chromatic dispersion confocal lens convenient to install |
| CN114200616B (en) * | 2020-08-28 | 2024-02-23 | 山东省科学院激光研究所 | Wide-range chromatic dispersion confocal lens convenient to install |
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