CN204964860U - Optical lens - Google Patents
Optical lens Download PDFInfo
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- CN204964860U CN204964860U CN201520757238.9U CN201520757238U CN204964860U CN 204964860 U CN204964860 U CN 204964860U CN 201520757238 U CN201520757238 U CN 201520757238U CN 204964860 U CN204964860 U CN 204964860U
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- lens
- focal power
- meniscus
- lens group
- meniscus lens
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Abstract
The utility model relates to an optical imaging field discloses an optical lens, include the front lens group of following the light incidence direction and arranging in proper order, diaphragm, rear mirror group and imaging surface, wherein: first biconvex lens is organized, is reached to meniscus lens, the 2nd meniscus lens, first biconcave lens, first contact lens that the focal power is followed the light incidence orientation and is arranged in proper order for positive front lens group includes, the 5th meniscus lens, second contact lens group, third biconvex lens, the 6th meniscus lens that the focal power is followed the light incidence direction and is arranged in proper order for positive rear lens group includes, in the above -mentioned camera lens, but meniscus lens correction system distortion, the 2nd meniscus lens can enlarge camera lens angle of vision degree and effectively compress the light beam bore, and the rear lens group can improve the lens opening, and the 6th meniscus lens can further adjust the camera lens focal power in order to satisfy the interface requirement, and consequently, it is at least for the characteristic of 8, 000, 000 pixels that this camera lens has large aperture, high resolution, ultralow cost, formation of image resolution ratio.
Description
Technical field
The utility model relates to optical imaging field, particularly a kind of optical lens.
Background technology
Along with socioeconomic development, highway network is day by day intensive, traffic is day by day busy, in order to effectively safeguard traffic safety, realize real-time monitoring road conditions, intelligent transportation system has realistic meaning to perfect road management level, and video frequency camera sensor is the gordian technique in intelligent transportation system, therefore promoting image information collecting instrument---the performance of pick-up lens is vital.At present, the optical lens feature of intelligent transportation field mostly is high definition, Large visual angle, large aperture etc.; And substantially all at the CCD of use 1 inch and 2/3 inch, the price is rather stiff of this class photo-sensitive cell, and the camera lens mated often volume is also comparatively large, cost is very high.But in today that modern photoelectric technology is maked rapid progress, optical imagery chip technology is constantly brought forth new ideas, and recent technological advances direction is the CMOS of 1/1.8 inch; 5,000,000,8,000,000 even higher pixels can be realized simultaneously, the market and the imager chip that imaging target surface is less, photosensitive property is better releases one after another, make high resolving power, large aperture, possess again the high-quality video pick-up lens of Ultra Low Cost by the active demand of market institute simultaneously.
But, for the camera lens of the related fields such as intelligent transportation electronic police, knotmeter in prior art, meet while the little target surface CMOS of at least 800 ten thousand pixel requires at imaging resolution, and large aperture can be realized, the video camera lens product of Ultra Low Cost is still blank.
Utility model content
The utility model provides a kind of optical lens, and this optical lens has the characteristic of large aperture, high resolving power, Ultra Low Cost, the full interface picture rich in detail that simultaneously imaging resolution can be provided to be at least 8,000,000 pixels.
For achieving the above object, the utility model provides following technical scheme:
A kind of optical lens, comprises the front lens group be arranged in order along light direction, diaphragm, rear lens group and imaging surface; Wherein:
The focal power of described front lens group is just, described front lens group comprises that the focal power be arranged in order along light direction is positive the first meniscus lens, focal power is negative the second meniscus lens, focal power is negative the first biconcave lens, focal power be the first positive balsaming lens group and focal power is the first positive biconvex lens;
The focal power of described rear lens group is just, described rear lens group comprises that the focal power be arranged in order along light direction is positive the 5th meniscus lens, focal power is negative the second balsaming lens group, focal power is positive the 3rd biconvex lens, focal power is the 6th positive meniscus lens.
In above-mentioned optical lens, the distortion of the first meniscus lens to system in front lens group effectively corrects, reduce perspective distortion and distortion, second meniscus lens can effective compression light beam bore while expansion camera lens field of view angle, be conducive to the miniaturization of lens construction, diaphragm between front lens group and rear lens group controls the size of luminous flux, rear lens group effectively can improve the aperture of camera lens, and the 6th meniscus lens in rear lens group can adjust the focal power of camera lens further, burnt after adjusting the optics of camera lens simultaneously, to meet the requirement of interface in structure, when light beam enters into camera lens, pass through front lens group successively, diaphragm, rear mirror group, finally arrive imaging surface, by selection and the debugging of optical element, the image planes of 1/1.8 inch of imaging can be realized, focal length is 8 millimeters, aperture simultaneously-reach F1.4, pixel-be at least 8,000,000 pixel CCD/CMOS requirements, therefore, above-mentioned optical lens has large aperture, high resolving power, the characteristic of Ultra Low Cost, the full interface picture rich in detail that simultaneously imaging resolution can be provided to be at least 8,000,000 pixels.
Preferably, in described front lens group the first meniscus lens convex surface facing incident ray.
Preferably, in described front lens group the second meniscus lens convex surface facing incident ray; Have interval between described second meniscus lens and described first meniscus lens, the second meniscus lens step surface is directly near the step surface of described first biconcave lens.
Preferably, described first balsaming lens group comprises:
Focal power is the 3rd positive meniscus lens;
Focal power is the 4th negative meniscus lens;
Described 3rd meniscus lens and the seamless gummed of described 4th meniscus lens are to form the first balsaming lens group.
Preferably, before described first biconcave lens is positioned at described 3rd meniscus lens; Between described first biconcave lens and described first balsaming lens group, there is interval.
Preferably, after described first biconvex lens is positioned at described 4th meniscus lens; Between described first balsaming lens group and described first biconvex lens, there is interval.
Preferably, the concave surface facing incident ray of described 5th meniscus lens.
Preferably, described second balsaming lens group comprises:
Focal power is the second negative biconcave lens;
Focal power is the second positive biconvex lens;
Described second biconcave lens and the seamless gummed of described second biconvex lens are to form the second balsaming lens group.
Preferably, before described 5th meniscus lens is positioned at described second biconcave lens; Between described 5th meniscus lens and described second balsaming lens group, there is interval.
Preferably, after described 3rd biconvex lens is positioned at described second biconvex lens; Between described second balsaming lens group and described 3rd biconvex lens, there is interval.
Preferably, described 6th meniscus lens is convex surface facing incident ray; Between described 6th meniscus lens and the 3rd biconvex lens, there is interval.
Accompanying drawing explanation
The optical element schematic diagram of a kind of optical lens that Fig. 1 provides for the utility model;
The structural representation of a kind of optical lens that Fig. 2 provides for the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of optical lens that the utility model embodiment provides, comprises the front lens group 100 be arranged in order along light direction, diaphragm 200, rear lens group 300 and imaging surface 400; Wherein:
The focal power of front lens group 100 is just, front lens group 100 comprises that the focal power be arranged in order along light direction is positive the first meniscus lens 110, focal power is negative the second meniscus lens 120, focal power is negative the first biconcave lens 130, focal power be the first positive balsaming lens group and focal power is the first positive biconvex lens 160.
The focal power of rear lens group 300 is just, rear lens group 300 comprises that the focal power be arranged in order along light direction is positive the 5th meniscus lens 310, focal power is negative the second balsaming lens group, focal power is positive the 3rd biconvex lens 340, focal power is the 6th positive meniscus lens 350.
In above-mentioned optical lens, the distortion of the first meniscus lens 110 pairs of systems in front lens group 100 effectively corrects, reduce perspective distortion and distortion, second meniscus lens 120 can effective compression light beam bore while expansion camera lens field of view angle, be conducive to the miniaturization of lens construction, diaphragm 200 between front lens group 100 and rear lens group 300 controls the size of luminous flux, rear lens group 300 effectively can improve the aperture of camera lens, and the 6th meniscus lens 350 in rear lens group 300 can adjust the focal power of camera lens further, burnt after adjusting the optics of camera lens simultaneously, to meet the requirement of interface in structure, when light beam enters into camera lens, successively by front lens group 100, diaphragm 200, rear lens group 300, finally arrive imaging surface 400, by selection and the debugging of optical element, the image planes of 1/1.8 inch of imaging can be realized, focal length is 8 millimeters, aperture simultaneously-reach F1.4, pixel-be at least 8,000,000 pixel CCD/CMOS requirements, therefore, above-mentioned optical lens has large aperture, high resolving power, the characteristic of Ultra Low Cost, the full interface picture rich in detail that simultaneously imaging resolution can be provided to be at least 8,000,000 pixels.
On the basis of above-mentioned optical lens, in order to realize effectively correcting the distortion of optical system, as shown in Figure 1, in a kind of preferred implementation, in front lens group 100, the first meniscus lens 110 is convex surface facing incident ray, and the focal power of the first meniscus lens 110 is just, can converging ray, spherical aberration is minimized, obtains good focal length effect, reduce perspective distortion and distortion.
In a kind of preferred implementation, as depicted in figs. 1 and 2, in front lens group 100, the second meniscus lens 120 is convex surface facing incident ray; Have interval between second meniscus lens 120 and the first meniscus lens 110, the second meniscus lens 120 step surface is directly near the step surface of the first biconcave lens 130.
In front lens group 100, by airspace that the mode arranging spacer ring 61 ensures each other between first meniscus lens 110 and the second meniscus lens 120, the focal power of front lens group 100 is made just to be, the step surface of the first biconcave lens 130 is passed through directly near the second meniscus lens 120 step surface between first biconcave lens 130 and the second meniscus lens 120, locate without the need to spacer ring, compression light beam bore while effectively increasing field angle, is conducive to the miniaturization of lens construction.
In a kind of preferred implementation, as shown in Figure 1, the first balsaming lens group comprises:
Focal power is the 3rd positive meniscus lens 140;
Focal power is the 4th negative meniscus lens 150;
3rd meniscus lens 140 and the seamless gummed of the 4th meniscus lens 150 are to form the first balsaming lens group, and the focal power of the first balsaming lens group is just.
Because focal power is that the 3rd positive meniscus lens 140 has negative aberration, focal power is that the 4th negative meniscus lens 150 has positive aberration, by the 3rd meniscus lens 140 and the seamless gummed of the 4th meniscus lens 150 are compensated to realize aberration mutually to form the first balsaming lens group, color difference eliminating, the sharpness of optimal imaging, improve the picture element of optical system, improve resolution.
After solving the low problem of systematical distortion and resolution in above-described embodiment, in order to ensure that the focal power of front lens group 100 is just, particularly, as depicted in figs. 1 and 2, before first biconcave lens 130 is positioned at the 3rd meniscus lens 140, and the first biconcave lens 130 focal power is negative; Between first biconcave lens 130 and the first balsaming lens group, there is interval, first biconcave lens 130 and the first balsaming lens group are fixed in the sleeve 5 of camera lens, simultaneously between the first biconcave lens 130 and the first balsaming lens group by airspace that the mode arranging spacer ring 66 ensures each other.
Particularly, as depicted in figs. 1 and 2, after the first biconvex lens 160 is positioned at the 4th meniscus lens 150, and the focal power of the first biconvex lens 160 is just; Have interval between first balsaming lens group and the first biconvex lens 160, the first biconvex lens 160 is fixed in the sleeve 5 of camera lens, and sleeve 5 is fixed on main cylinder 7; By airspace that the mode arranging spacer ring 65 ensures each other between first balsaming lens group and the first biconvex lens 160.
In a kind of preferred implementation, as shown in Figure 1, the concave surface facing incident ray of the 5th meniscus lens 310, and the focal power of the 5th meniscus lens 310 is just, 5th meniscus lens 310 can improve the susceptibility of element near diaphragm 200, improves system margins performance.
In a kind of preferred implementation, as shown in Figure 1, the second balsaming lens group comprises:
Focal power is the second negative biconcave lens 320;
Focal power is the second positive biconvex lens 330;
Second biconcave lens 320 and the seamless gummed of the second biconvex lens 330 are to form the second balsaming lens group, and the focal power of the second balsaming lens group is negative.
Second balsaming lens group and the first balsaming lens group effect similar, mutually compensate for aberration, color difference eliminating, the sharpness of optimal imaging, improve the picture element of optical system, improve resolution.
In a kind of preferred implementation, as depicted in figs. 1 and 2, before the 5th meniscus lens 310 is positioned at the second biconcave lens 320, and the focal power of the 5th meniscus lens 310 is just; Have interval between 5th meniscus lens 310 and the second balsaming lens group, the second balsaming lens group is fixed in the main cylinder 7 of camera lens, by airspace that the mode arranging spacer ring 64 ensures each other between the 5th meniscus lens 310 and the second balsaming lens group.
Particularly, as depicted in figs. 1 and 2, after the 3rd biconvex lens 340 is positioned at the second biconvex lens 330, and the focal power of the 3rd biconvex lens 340 is just; Between second balsaming lens group and the 3rd biconvex lens 340, there is interval, by airspace that the mode arranging spacer ring 62 ensures each other between the second balsaming lens group and the 3rd biconvex lens 340.
In a kind of preferred implementation, as depicted in figs. 1 and 2, the 6th meniscus lens 350 is convex surface facing incident ray, and the focal power of the 6th meniscus lens 350 is just; Between 6th meniscus lens 350 and the 3rd biconvex lens 340, there is interval, by airspace that the mode arranging spacer ring 63 ensures each other between the 3rd biconvex lens 340 and the 6th meniscus lens 350; Meanwhile, the 6th meniscus lens 350 can adjust the focal power of camera lens further, and burnt after optics, to meet the requirement of interface in structure.
Obviously, those skilled in the art can carry out various change and modification to the utility model embodiment and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (11)
1. an optical lens, is characterized in that, comprises the front lens group be arranged in order along light direction, diaphragm, rear mirror group and imaging surface; Wherein:
The focal power of described front lens group is just, described front lens group comprises that the focal power be arranged in order along light direction is positive the first meniscus lens, focal power is negative the second meniscus lens, focal power is negative the first biconcave lens, focal power be the first positive balsaming lens group and focal power is the first positive biconvex lens;
The focal power of described rear lens group is just, described rear lens group comprises that the focal power be arranged in order along light direction is positive the 5th meniscus lens, focal power is negative the second balsaming lens group, focal power is positive the 3rd biconvex lens, focal power is the 6th positive meniscus lens.
2. optical lens according to claim 1, is characterized in that, in described front lens group, the first meniscus lens is convex surface facing incident ray.
3. optical lens according to claim 1, is characterized in that, in described front lens group, the second meniscus lens is convex surface facing incident ray; Have interval between described second meniscus lens and described first meniscus lens, the second meniscus lens step surface is directly near the step surface of described first biconcave lens.
4. optical lens according to claim 1, is characterized in that, described first balsaming lens group comprises:
Focal power is the 3rd positive meniscus lens;
Focal power is the 4th negative meniscus lens;
Described 3rd meniscus lens and the seamless gummed of described 4th meniscus lens are to form the first balsaming lens group.
5. optical lens according to claim 4, is characterized in that, before described first biconcave lens is positioned at described 3rd meniscus lens; Between described first biconcave lens and described first balsaming lens group, there is interval.
6. optical lens according to claim 4, is characterized in that, after described first biconvex lens is positioned at described 4th meniscus lens; Between described first balsaming lens group and described first biconvex lens, there is interval.
7. optical lens according to claim 1, is characterized in that, the concave surface facing incident ray of described 5th meniscus lens.
8. optical lens according to claim 1, is characterized in that, described second balsaming lens group comprises:
Focal power is the second negative biconcave lens;
Focal power is the second positive biconvex lens;
Described second biconcave lens and the seamless gummed of described second biconvex lens are to form the second balsaming lens group.
9. optical lens according to claim 8, is characterized in that, before described 5th meniscus lens is positioned at described second biconcave lens; Between described 5th meniscus lens and described second balsaming lens group, there is interval.
10. optical lens according to claim 8, is characterized in that, after described 3rd biconvex lens is positioned at described second biconvex lens; Between described second balsaming lens group and described 3rd biconvex lens, there is interval.
11. optical lens according to claim 1, is characterized in that, described 6th meniscus lens is convex surface facing incident ray; Between described 6th meniscus lens and the 3rd biconvex lens, there is interval.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757238.9U CN204964860U (en) | 2015-09-25 | 2015-09-25 | Optical lens |
| PCT/CN2016/086000 WO2016202273A1 (en) | 2015-06-17 | 2016-06-16 | A zoom lens system |
| US15/737,281 US10495860B2 (en) | 2015-06-17 | 2016-06-16 | Zoom lens system |
| EP16811014.6A EP3311212B1 (en) | 2015-06-17 | 2016-06-16 | A zoom lens system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757238.9U CN204964860U (en) | 2015-09-25 | 2015-09-25 | Optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204964860U true CN204964860U (en) | 2016-01-13 |
Family
ID=55059916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520757238.9U Expired - Fee Related CN204964860U (en) | 2015-06-17 | 2015-09-25 | Optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204964860U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182504A (en) * | 2015-09-25 | 2015-12-23 | 浙江大华技术股份有限公司 | Optical lens |
| WO2016202273A1 (en) * | 2015-06-17 | 2016-12-22 | Zhejiang Dahua Technology Co., Ltd | A zoom lens system |
| CN112006639A (en) * | 2019-05-31 | 2020-12-01 | 北京点阵虹光光电科技有限公司 | Imaging lens of electronic endoscope |
| CN112099204A (en) * | 2020-11-16 | 2020-12-18 | 北京领邦智能装备股份公司 | Lens assembly, imaging device, detection device and detection system |
-
2015
- 2015-09-25 CN CN201520757238.9U patent/CN204964860U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016202273A1 (en) * | 2015-06-17 | 2016-12-22 | Zhejiang Dahua Technology Co., Ltd | A zoom lens system |
| US10495860B2 (en) | 2015-06-17 | 2019-12-03 | Zhejiang Dahua Technology Co., Ltd. | Zoom lens system |
| CN105182504A (en) * | 2015-09-25 | 2015-12-23 | 浙江大华技术股份有限公司 | Optical lens |
| CN105182504B (en) * | 2015-09-25 | 2017-11-21 | 浙江大华技术股份有限公司 | A kind of optical lens |
| CN112006639A (en) * | 2019-05-31 | 2020-12-01 | 北京点阵虹光光电科技有限公司 | Imaging lens of electronic endoscope |
| CN112006639B (en) * | 2019-05-31 | 2024-02-23 | 北京点阵虹光光电科技有限公司 | Electronic endoscope imaging lens |
| CN112099204A (en) * | 2020-11-16 | 2020-12-18 | 北京领邦智能装备股份公司 | Lens assembly, imaging device, detection device and detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20210925 |