CN109375340B - 360-degree looking-around dead-angle-free optical imaging system - Google Patents
360-degree looking-around dead-angle-free optical imaging system Download PDFInfo
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- CN109375340B CN109375340B CN201811101307.5A CN201811101307A CN109375340B CN 109375340 B CN109375340 B CN 109375340B CN 201811101307 A CN201811101307 A CN 201811101307A CN 109375340 B CN109375340 B CN 109375340B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
Abstract
The application discloses a 360-degree looking-around dead-angle-free optical imaging systemFront lens group, diaphragm, rear lens group and image plane are set in order from object plane side to image plane side, optical imaging satisfies: -4.0 < f Front group ＜‑3.0；4.0＜f Rear group ＜4.5；‑1.2＜f Rear group /f Front group < -1.1; wherein: f (f) Front group F is the optical focal length of the front lens group Rear group An optical focal length for the rear lens group. The optical imaging system adopts a six-piece type optical all-glass architecture, single imaging is carried out at 195 ℃, and then critical seamless connection of a front imaging range and a rear imaging range is combined into a picture through splicing and cutting of a rear end software algorithm; realize 360 degrees all-round coverage.
Description
Technical Field
The application relates to an optical imaging system, in particular to a 360-degree looking-around dead-angle-free optical imaging system.
Background
Along with the great popularization of the current vehicle-mounted systems and monitoring systems, the system can hope to have omnibearing coverage for different scenes and different angles; from the safety aspect, on the basis of 360-degree looking around, only one set of equipment is used, so that the cost is saved, and the space and the installation can be saved to the greatest extent;
however, most of the current market can only realize 180 ° coverage, if two devices are required to realize 360 °, one device is equipped with one optical system, and two optical systems as envisaged by the present patent are integrated on one chip and device, but no device exists yet.
Disclosure of Invention
The application aims to provide a 360-degree looking-around dead-angle-free optical imaging system so as to overcome the defects in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions: 360-degree look around dead angle-free optical imaging system is provided with front lens group, diaphragm, rear lens group and image plane in proper order from object plane side to image plane side along the optical axis direction, its characterized in that:
the optical interval between the front lens group and the diaphragm is 3.78mm, the optical interval between the diaphragm and the rear lens group is 2.93mm, and the optical interval between the rear lens group and the image surface is more than or equal to 5.7mm.
Preferably, the front lens group is provided with a first lens, a second lens and a third lens in sequence from the object surface side to the image surface side along the optical axis direction; the rear lens group is provided with a fourth lens, a fifth lens and a sixth lens in sequence from the object surface side to the image surface side along the optical axis direction.
Preferably, the first lens is a meniscus negative lens, the second lens is a biconcave negative lens, the third lens is a biconvex positive lens, the fourth lens is a meniscus negative lens, the fifth lens is a biconvex positive lens, and the sixth lens is a biconvex positive lens.
Preferably, the first lens material is H-K9L, the second lens material is H-ZK9B, the third lens material is H-ZF12, the fourth lens material is H-LAK53, the fifth lens material is H-ZF52A, and the sixth lens material is H-ZBAF20.
Preferably, the fourth lens and the fifth lens form a group of cemented lens groups.
Preferably, the radius of curvature of the left and right surfaces of the third lens is uniform.
Preferably, the optical spacing between the first lens and the second lens is 1.88mm, the optical spacing between the second lens and the third lens is 0.83mm, and the optical spacing between the fifth lens and the sixth lens is 0.35mm.
Preferably, the optical imaging system satisfies:
a first lens: r2 is more than or equal to 10 and less than or equal to 11.8 and R2 is more than or equal to 4.2.0.7 and D is more than or equal to 0.9
A second lens: r1 is more than or equal to-24 and less than or equal to-22.5, R2 is more than or equal to 3.0.6 and D is more than or equal to 0.8
And a third lens: r1 is more than or equal to 17 and less than or equal to 18-18R 2 is more than or equal to-17.3 and D is more than or equal to 2.9
Fourth lens: r1 is more than or equal to 7.0 and less than or equal to 7.2.5, R2 is more than or equal to 3.0.1.8 and D is more than or equal to 2.2
A fifth lens: r1 is more than or equal to 2.5 and less than or equal to 3.0-7, R2 is more than or equal to-8.3 and D is more than or equal to 1.5
A sixth lens: r1 is more than or equal to 4.5 and less than or equal to 5.0-25, R2 is more than or equal to-28.2 and D is more than or equal to 1.4
Wherein: r1 is the curvature radius value of the lens at the side close to the object plane, R2 is the curvature radius value of the lens at the side close to the phase plane, and D is the central thickness value of the lens.
Compared with the prior art, the optical imaging system adopts a six-piece type optical all-glass architecture, images 195 degrees singly, and combines critical seamless connection of a front imaging range and a rear imaging range into a picture through splicing and cutting of a rear end software algorithm; realize 360 degrees all-round coverage. Through reasonable distribution of the focal power of the six optical lenses, the system realizes the following conditions: focal length f=1.45 mm; aperture f# =1.8; angle dfov=195°; chip phi 4.0.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a 360-degree look-around dead-angle-free optical imaging system in an embodiment of the application;
FIG. 2 is a diagram illustrating a 360 degree look-around dead angle-free optical imaging system in accordance with an embodiment of the present application;
FIG. 3 is a schematic view of optical aberration of a 360-degree look-around dead-angle-free optical imaging system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of field curvature and distortion of a 360-degree look-around dead-angle-free optical imaging system in an embodiment of the application;
fig. 5 is a schematic view of a point array of a 360-degree look-around dead-angle-free optical imaging system in an embodiment of the application.
Detailed Description
The following detailed description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, a 360-degree look-around dead-angle-free optical imaging system sequentially comprises a front lens group, a diaphragm, a rear lens group and an image surface from the object surface side to the image surface side along the optical axis direction, wherein the optical interval between the front lens group and the diaphragm is preferably 3.78mm, the optical interval between the diaphragm and the rear lens group is 2.93mm, and the optical interval between the rear lens group and the image surface is greater than or equal to 5.7mm.
In the technical scheme, the rear mirror group can turn by 90 degrees relative to the optical imaging system, and the total thickness of the product can be reduced by 60 percent through the 90-degree turning of the rear mirror group.
Preferably, the front lens group is provided with a first lens, a second lens and a third lens in sequence from the object surface side to the image surface side along the optical axis direction; the rear lens group is provided with a fourth lens, a fifth lens and a sixth lens in sequence from the object surface side to the image surface side along the optical axis direction.
Preferably, the first lens is a meniscus negative lens, the second lens is a biconcave negative lens, the third lens is a biconvex positive lens, the fourth lens is a meniscus negative lens, the fifth lens is a biconvex positive lens, and the sixth lens is a biconvex positive lens.
Preferably, the first lens material is H-K9L, the second lens material is H-ZK9B, the third lens material is H-ZF12, the fourth lens material is H-LAK53, the fifth lens material is H-ZF52A, and the sixth lens material is H-ZBAF20.
In the technical scheme, in order to reduce the production cost as much as possible, the first lens, the second lens and the third lens are made of conventional low-cost glass materials.
Preferably, the fourth lens and the fifth lens form a group of cemented lens groups.
In the technical scheme, the fourth lens and the fifth lens are formed by gluing optical-grade photosensitive glue.
Preferably, the radius of curvature of the left and right surfaces of the third lens is identical.
In the technical scheme, the problem of orientation of the third lens is not needed to be distinguished in the processing and assembling processes, and labor hour is saved.
Preferably, the optical spacing between the first lens and the second lens is 1.88mm, the optical spacing between the second lens and the third lens is 0.83mm, and the optical spacing between the fifth lens and the sixth lens is 0.35mm.
Preferably, the optical imaging system satisfies:
a first lens: r2 is more than or equal to 10 and less than or equal to 11.8 and R2 is more than or equal to 4.2.0.7 and D is more than or equal to 0.9
A second lens: r1 is more than or equal to-24 and less than or equal to-22.5, R2 is more than or equal to 3.0.6 and D is more than or equal to 0.8
And a third lens: r1 is more than or equal to 17 and less than or equal to 18-18R 2 is more than or equal to-17.3 and D is more than or equal to 2.9
Fourth lens: r1 is more than or equal to 7.0 and less than or equal to 7.2.5, R2 is more than or equal to 3.0.1.8 and D is more than or equal to 2.2
A fifth lens: r1 is more than or equal to 2.5 and less than or equal to 3.0-7, R2 is more than or equal to-8.3 and D is more than or equal to 1.5
A sixth lens: r1 is more than or equal to 4.5 and less than or equal to 5.0-25, R2 is more than or equal to-28.2 and D is more than or equal to 1.4
Wherein: r1 is the curvature radius value of the lens at the side close to the object plane, R2 is the curvature radius value of the lens at the side close to the phase plane, and D is the central thickness value of the lens.
In the technical scheme, in order to facilitate mass assembly, the caliber of the front lens group of the optical imaging system is larger than that of the rear lens group, the caliber of the inner lens of the rear lens group is consistent, but the caliber of the inner lens of the front lens group and the caliber of the inner lens of the rear lens group are inconsistent, so that the placement of the lenses is very convenient
As shown in FIG. 2, in order to provide a clipping space for a back-end software algorithm, an optical angle of a single system is 195 degrees, and a 15-degree spatial yield and clipping of the algorithm are provided for the 360-degree optical imaging system without dead angles in the looking-around of the specific embodiment of the application
Fig. 3, 3 and 4 show optical aberration diagrams, field curves, distortion diagrams and dot column diagrams of an optical imaging system with a 4K eight megapixel large target surface according to an embodiment of the present application.
In summary, compared with the prior art, the optical imaging system adopts a six-piece type optical all-glass architecture, images 195 degrees singly, and then combines critical seamless connection of a front imaging range and a rear imaging range into a picture through splicing and cutting of a rear software algorithm; realize 360 degrees all-round coverage. Through reasonable distribution of the focal power of the six optical lenses, the system realizes the following conditions: focal length f=1.45 mm; aperture f# =1.8; angle dfov=195°; chip phi 4.0.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely illustrative of the embodiments of this application and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the application, and it is intended to cover all modifications and variations as fall within the scope of the application.
Claims (2)
1. 360-degree look-around dead-angle-free optical imaging system is formed by a front lens group, a diaphragm, a rear lens group and an image surface from one side of an object surface to one side of the image surface along the optical axis direction, and is characterized in that: the front lens group is formed by a first lens, a second lens and a third lens from the object surface side to the image surface side along the optical axis direction; the rear lens group is composed of a fourth lens, a fifth lens and a sixth lens from the object surface side to the image surface side along the optical axis direction; the first lens is a meniscus type negative lens, the second lens is a biconcave type negative lens, the third lens is a biconvex type positive lens, the fourth lens is a meniscus type negative lens, the fifth lens is a biconvex type positive lens, the sixth lens is a biconvex type positive lens, and the fourth lens and the fifth lens form a group of cemented lens groups;
the optical interval between the front lens group and the diaphragm is 3.78mm, the optical interval between the diaphragm and the rear lens group is 2.93mm, and the optical interval between the rear lens group and the image surface is more than or equal to 5.7mm;
the first lens material is H-K9L, the second lens material is H-ZK9B, the third lens material is H-ZF12, the fourth lens material is H-LAK53, the fifth lens material is H-ZF52A, and the sixth lens material is H-ZBAF20;
the optical imaging system satisfies:
a first lens: r2 is more than or equal to 10 and less than or equal to 11,2.8, R2 is more than or equal to 4.2,0.7, D is more than or equal to 0.9,
a second lens: r1 is more than or equal to-24 and less than or equal to-22,2.5, R2 is more than or equal to 3.0,0.6 and D is more than or equal to 0.8,
and a third lens: r1 is more than or equal to 17 and less than or equal to 18, R2 is more than or equal to 18 and less than or equal to 17,2.3, D is more than or equal to 2.9,
fourth lens: r1 is more than or equal to 7.0 and less than or equal to 7.2,2.5, R2 is more than or equal to 3.0,1.8 and D is more than or equal to 2.2,
a fifth lens: r1 is more than or equal to 2.5 and less than or equal to 3.0, R2 is more than or equal to 7 and less than or equal to 8,1.3, D is more than or equal to 1.5,
a sixth lens: r1 is more than or equal to 4.5 and less than or equal to 5.0, R2 is more than or equal to-25 and less than or equal to 28,1.2, D is more than or equal to 1.4,
wherein: r1 is a curvature radius value of the lens at one side close to the object plane, R2 is a curvature radius value of the lens at one side close to the image plane, D is a central thickness value of the lens, and the units are mm;
the optical imaging system adopts a six-piece type optical all-glass architecture, single imaging is carried out at 195 degrees, and then the critical seamless connection of the front imaging range and the rear imaging range is combined into a picture through the splicing and cutting of a back-end software algorithm, so that 360-degree all-dimensional coverage is realized.
2. The 360-degree look-around dead-angle-free optical imaging system of claim 1, wherein: the curvature radius of the left surface and the right surface of the third lens is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811101307.5A CN109375340B (en) | 2018-09-20 | 2018-09-20 | 360-degree looking-around dead-angle-free optical imaging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811101307.5A CN109375340B (en) | 2018-09-20 | 2018-09-20 | 360-degree looking-around dead-angle-free optical imaging system |
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| CN109375340A CN109375340A (en) | 2019-02-22 |
| CN109375340B true CN109375340B (en) | 2023-10-10 |
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| CN113219637B (en) * | 2021-03-16 | 2023-03-14 | 上海峰梅光学科技有限公司 | Vehicle-mounted ADAS wide-angle lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010224010A (en) * | 2009-03-19 | 2010-10-07 | Olympus Corp | Optical system |
| CN204065536U (en) * | 2012-02-22 | 2014-12-31 | 富士胶片株式会社 | Imaging lens system and possess the camera head of this imaging lens system |
| CN105204142A (en) * | 2015-09-18 | 2015-12-30 | 苏州莱能士光电科技有限公司 | High-resolution and ultra-wide field fish-eye lens optical system with day-and-night confocal function |
| CN107728294A (en) * | 2017-11-21 | 2018-02-23 | 苏州莱能士光电科技股份有限公司 | One kind looks around 360 degree of panoramic high-definition imaging systems |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010224010A (en) * | 2009-03-19 | 2010-10-07 | Olympus Corp | Optical system |
| CN204065536U (en) * | 2012-02-22 | 2014-12-31 | 富士胶片株式会社 | Imaging lens system and possess the camera head of this imaging lens system |
| CN105204142A (en) * | 2015-09-18 | 2015-12-30 | 苏州莱能士光电科技有限公司 | High-resolution and ultra-wide field fish-eye lens optical system with day-and-night confocal function |
| CN107728294A (en) * | 2017-11-21 | 2018-02-23 | 苏州莱能士光电科技股份有限公司 | One kind looks around 360 degree of panoramic high-definition imaging systems |
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