CN106125261A - A kind of wide-angle lens - Google Patents
A kind of wide-angle lens Download PDFInfo
- Publication number
- CN106125261A CN106125261A CN201610733641.7A CN201610733641A CN106125261A CN 106125261 A CN106125261 A CN 106125261A CN 201610733641 A CN201610733641 A CN 201610733641A CN 106125261 A CN106125261 A CN 106125261A
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- China
- Prior art keywords
- eyeglass
- group
- positive light
- angle
- light coke
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Classifications
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
A kind of wide-angle lens, includes the first group G1, aperture diaphragm STP and the second group G2 from object plane to image planes successively；At imaging surface IMG, it is configured with the light receiving surface of solid-state imager；Described first group G1 is by the first eyeglass L1 with negative power being coaxially disposed, the second eyeglass L2 with negative power and has the 3rd eyeglass L3 of positive light coke and forms；Described first eyeglass L1, the front surface of the second eyeglass L2 are convex surface, and rear surface is concave surface；Described second group G2 by the 4th eyeglass L4 with positive light coke being coaxially disposed, there is the 5th eyeglass L5 of positive light coke, there is the 6th eyeglass L of negative power) and there is the 7th eyeglass L7 of positive light coke form；Described 5th eyeglass L5 and the 6th eyeglass L6 forms cemented doublet, and the cemented surface of cemented doublet bends towards thing side；First group G1 and the second group G2 is connected by threaded frame, lay respectively at outdoors with both sides in door；By rotating screw thread, change the distance between two groups.
Description
Technical field
The present invention relates to the wide-angle lens of a kind of wide-angle lens, especially opal.
Background technology
Solve the technical problem that or purpose: (this technical problem refers to solve the difficulty run in production at present or deposit
Problem, it is also possible to be to bring newly to create.) opal, also known as peephole, it is installed in the one on the door of house family
Compact optical instrument, it is simple to resident observes outdoor situation.Become the necessary of home safety.Outside by peephole from indoor
See, all scenes in the range of the angle of visual field is about 120 degree outdoors can be seen clearly, and from seeing indoor by peephole outdoors
Anything.If on the gate in public housing or private residence etc., loading onto this mirror, for the antitheft of family and safety, can play certain
Effect.
Opal, according to imaging mode, can be divided into tradition opal and electronic peephole viewer.Tradition opal is optical imagery, in reality
There is a lot of inconvenience on border in using.Such as, visual angle is big not, and viewing is limited in scope.Emergent pupil is less, it is necessary to outside pressing close to just can see clearly
The picture in face.And because tradition opal does not provide light source, cannot use when night, corridor was without lamp.Have old the most at home
In the case of people and child, because old man's eyesight is bad, child's height is inadequate, and tradition opal is often not easy to them and uses.And
Tradition opal not only inconvenient old man child use, and there is the biggest household safe hidden danger: occurred in that in society simultaneously
Opal peeps device, more can be able to be given in addition to privacy has no way of protection from seeing indoor situation outdoors by its offender
Offender implements crime provides convenient.In recent years, the news utilizing tradition opal defect to carry out crime day by day increases, as long as slightly
Adding and notice, we often see relevant report from media: offender finds no one in room, pulls down opal, stretches with instrument
Open lockset in entering and carry out the cases such as theft.
Electronic peephole viewer, be otherwise known as video doorbell, and it is integrated with the function of opal and doorbell, and overcomes traditional optical cat
The deficiency of eye and potential safety hazard, add the effect in terms of monitoring, is now widely used in family and high-grade hotel doorway, is to biography
A kind of upgrading of the optical cat-eye of system and substitute products.Electronic peephole viewer is by camera lens, mechanism shell and imageing sensor, screen four
It is grouped into.And determine the image quality of electronic peephole viewer and the angle of visual field, most important ingredient be camera lens.The most existing
The shortcoming of some electronic peephole viewers is as follows:
1. lens length cannot change, it is impossible to adapts to not fellow disciple thick.
At present the most existing electronic peephole viewer camera lens, all uses the optical system of integration form, its optics overall length without
Method changes.The design of integration makes opal camera lens there is certain inadaptability when installing on the door of different-thickness, in order to
Eliminate the impact that fellow disciple is not thick, camera lens and mechanism shell can only be incorporated into outdoors, then by connection to door inner sensor
Part obtains image information.Such opal lens design safety is the lowest, and lawless person is easy to from outdoors by in-house
Circuit damage fall, make whole device to use.
2. can change lens length, but the angle of visual field reduces, image quality is deteriorated.
The size of the angle of visual field determines the field range that optical system can show, the angle of visual field is the biggest, and the visual field is the biggest.Mesh
Before on the market major part electronic peephole viewer camera lens use optical system, the angle of visual field is smaller, it is impossible to realize a wide range of bat
Take the photograph and monitor, have bigger dead angle area, there is certain potential safety hazard.And thick in order to adapt to different doors, changing mirror
During head length, the performance of camera lens is made that bigger sacrifice, and the angle of visual field significantly reduces.
3. resolution is low.
The resolution of opal lens optical system on the market is the most poor, and resolution, below 1,300,000 pixels, causes whole
The poor definition of individual optical system, Consumer's Experience is bad.
Summary of the invention
The present invention to overcome the defect of the existence of existing electronic peephole viewer, it is provided that a kind of be suitable for that not fellow disciple is thick, the angle of visual field is big and
A kind of wide-angle lens of the electronic peephole viewer that constant, resolution is high.
A kind of wide-angle lens, it is characterised in that: include successively from object plane to image planes the first group G1, aperture diaphragm STP and
Second group G2；At imaging surface IMG, it is configured with the light receiving surface of solid-state imager；
Described first group G1 by the first eyeglass L1 with negative power being coaxially disposed, there is the second of negative power
Eyeglass L2 and the 3rd eyeglass L3 composition with positive light coke；
Described first eyeglass L1, the front surface of the second eyeglass L2 are convex surface, and rear surface is concave surface；
Described second group G2 by the 4th eyeglass L4 with positive light coke being coaxially disposed, there is the 5th of positive light coke
Eyeglass L5, have negative power the 6th eyeglass L6 and have positive light coke the 7th eyeglass L7 composition；
Described 5th eyeglass L5 and the 6th eyeglass L6 forms cemented doublet, and the cemented surface of cemented doublet bends towards thing side；
First group G1 and the second group G2 is connected by threaded frame, by rotating screw thread, changes between two groups
Distance.
The glazed thread of same visual field and lower light are substantially parallel by after the first group G1, and meet equation below:WhereinFor glazed thread and optical axis angle,Angle for lower light Yu optical axis.
Based on being engaged in the abundant practical experience of this type of product design manufacture and Professional knowledge, and coordinate the utilization of scientific principle, long-pending
Pole research and innovation in addition, to founding the Radix Rumicis tight shot of a kind of new structure, it is possible to improve general existing opal camera lens,
It is made to have more practicality.Through constantly research, design, and after repeatedly studying sample and improving, finally create really
The present invention having practical value.
The advantage of the invention is as follows:
1. realize variable optical overall length, and in change procedure, its angle of visual field and performance can remain unchanged.
The optical system of camera lens of the present invention, is divided into Liang Ge group, by the opal camera lens group being placed on outdoors be placed in door
Pin hole group camera lens two parts composition, these two parts are connected by threaded frame.Set by special light path and lens construction
Meter, in the case of the optical system of the present invention can accomplish to change optics overall length (TTL), its angle of visual field and performance can maintain not
Become.That is the present invention can use on the door of different-thickness, has universality.
Simultaneously as a traditional opal (inside it be the present invention design opal camera lens group), pin the most only need to be being filled
Aperture mirror head group and other mechanism shells are all placed in door with imageing sensor, therefore present invention effectively avoids mechanism and are broken
Bad risk.
2. the angle of visual field is big.
The angle of view of the present invention, up to 150 °, adapts to not visual field in the case of fellow disciple's thickness changing optical system overall length
Angle is constant, has accomplished big Radix Rumicis simultaneously, under the same conditions it can be seen that larger range of visual field, it is achieved on a large scale shooting and
Monitoring, dead angle area significantly reduces, and improves the safety of peephole system.
3. resolution is high.
By the camera lens of the present invention is carried out picture element optimization design, its resolution can mate the imageing sensor of 1080P,
2,000,000 pixels are reached.Compared to other products on the market, the present invention has higher definition so that picture is apparent,
Also Consumer's Experience is improved while improve safety.The problem existed for electronic peephole viewer the most on the market, the present invention will
Design a kind of novel wide-angle lens, it is provided that a kind of novel electron opal, it is achieved variable optical overall length (TTL), and ensureing
Under 2000000 pixel 1080P high definition image quality, expand the angle of view, improve image sharpness.
Accompanying drawing explanation
Fig. 1 is the structural representation of optical system in the present invention；
Fig. 2 is the embodiment 1 axial aberration schematic diagram of optical system in the case of diverse location and curvature of the image figure.
Fig. 3 is the embodiment 1 optical system MTF schematic diagram in the case of diverse location.
Detailed description of the invention
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment with existing
In having technology to describe, the required accompanying drawing used is briefly described.
Embodiment 1
Referring to the drawings 1,2,3
This wide-angle lens, includes the first group G1, aperture diaphragm STP and the second group G2 from object plane to image planes successively.?
Imaging surface IMG, is configured with the light receiving surface of the solid-state imager of CCD and CMOS etc..
For the first group G1, configure in order from object side and there is the first eyeglass L1 of negative power, there is negative light
Second eyeglass L2 of focal power and the 3rd eyeglass L3 composition with positive light coke.
For the second group G2, configure in order from object side and there is the 4th eyeglass L4 of positive light coke, there is positive light
5th eyeglass L5 of focal power, there is the 6th eyeglass L6 of negative power and there is the 7th eyeglass L7 composition of positive light coke.Wherein
5th eyeglass L5 and the 6th eyeglass L6 forms cemented doublet, and the cemented surface of cemented doublet bends towards thing side.
The first group G1 and the second group G2 of wide-angle lens are connected by threaded frame, by rotating screw thread, can change
Distance between two groups, to adapt to different door thickness scopes.Can accomplish that resolution is basically unchanged while changing distance.
Below, it is shown that about embodiment 1 wide-angle lens various numeric datas in the case of diverse location.
EFL (effective focal length)=2.63mm (P1)～2.74mm (P2)～2.68mm (P3)
FNo (image space F number)=3.9 (P1)～4.1 (P2)～4.0 (P3)
FOV (angle of visual field)=150 ° (P1)～150 ° (P2)～150 ° (P3)
TTL (optics overall length)=63.6mm (P1)～84.6mm (P2)～103.6mm (P3)
Table 1 shows that the structural parameters of embodiment 1 optical system, table 2 show that the camera lens of diverse location is joined by embodiment 1
Number.
Table 1 embodiment 1 optical system structure parameter
| Surface sequence number | Surface type | Radius of curvature | Thickness | Refractive index | Abbe number |
| S1 | Sphere | 29.49 | 0.89 | 1.85 | 40.3 |
| S2 | Sphere | 6.85 | 4.61 | ||
| S3 | Sphere | 39.54 | 1.47 | 1.91 | 35.2 |
| S4 | Sphere | 10.51 | 30.41 | ||
| S5 | Sphere | INF | 2.55 | 1.53 | 61.3 |
| S6 | Sphere | -18.11 | 0.44 | ||
| Diaphragm | Sphere | INF | A | ||
| S8 | Sphere | 12.20 | 2.97 | 1.75 | 51.4 |
| S9 | Sphere | 64.26 | 2.92 | ||
| S10 | Sphere | 7.64 | 4.22 | 1.47 | 85.3 |
| S11 | Sphere | -16.32 | 1.38 | 1.95 | 18.0 |
| S12 | Sphere | 6.78 | 4.97 | ||
| S13 | Sphere | 9.27 | 2.31 | 1.52 | 64.3 |
| S14 | Sphere | -62.45 | 2.43 | ||
| Image planes | Sphere |
Table 2 embodiment 1 is to diverse location lens parameters
| Surface sequence number | Position 1 | Position 2 | Position 3 |
| A | 2 | 21 | 42 |
Fig. 1 is the structural representation of the embodiment 1 optical system in the case of diverse location
Fig. 2 is the embodiment 1 axial aberration schematic diagram of optical system in the case of diverse location and curvature of the image figure.From figure
2 it can be seen that the lateral chromatic aberration major part of light of different frequency is all in the range of Airy disk, and imaging aberrations is relatively uniform, i.e.
Axial chromatic aberration has obtained good correction, it is possible to achieve blur-free imaging.And the curvature of field of system preferably corrects, although have wide
Angular field, but full filed picture element is the most uniform.
Fig. 3 is the embodiment 1 optical system MTF schematic diagram in the case of diverse location.Picture element has obtained very as seen from Figure 3
Good correction, can easily realize the output performance of more than 2,000,000 pixels.
Claims (3)
1. a wide-angle lens, it is characterised in that: from object plane to image planes, include the first group G1, aperture diaphragm STP and successively
Two group G2；At imaging surface IMG, it is configured with the light receiving surface of solid-state imager；
Described first group G1 is had the first eyeglass L1 of negative power by be coaxially disposed, had the second eyeglass of negative power
L2 and the 3rd eyeglass L3 composition with positive light coke；
Described first eyeglass L1, the front surface of the second eyeglass L2 are convex surface, and rear surface is concave surface；
Described second group G2 is had the 4th eyeglass L4 of positive light coke by be coaxially disposed, had the 5th eyeglass of positive light coke
L5, have negative power the 6th eyeglass L6 and have positive light coke the 7th eyeglass L7 composition.
2. a kind of wide-angle lens as claimed in claim 1, it is characterised in that: the first group G1 and the second group G2 is by screw thread even
Connect frame to connect, by rotating screw thread, change the distance between two groups.
3. wide-angle lens as claimed in claim 2 a kind of, it is characterised in that: the glazed thread of same visual field and lower light are by the
It is substantially parallel after one group G1, and meets equation below:WhereinFor glazed thread and light
The angle of axle,Angle for lower light Yu optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733641.7A CN106125261A (en) | 2016-08-25 | 2016-08-25 | A kind of wide-angle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733641.7A CN106125261A (en) | 2016-08-25 | 2016-08-25 | A kind of wide-angle lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106125261A true CN106125261A (en) | 2016-11-16 |
Family
ID=57275370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610733641.7A Withdrawn CN106125261A (en) | 2016-08-25 | 2016-08-25 | A kind of wide-angle lens |
Country Status (1)
| Country | Link |
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| CN (1) | CN106125261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106791293A (en) * | 2016-11-23 | 2017-05-31 | 嘉兴中润光学科技有限公司 | A kind of optical system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323302A (en) * | 1979-03-02 | 1982-04-06 | Olympus Optical Co., Ltd. | Wide-angle zoom lens system |
| US4452512A (en) * | 1979-09-18 | 1984-06-05 | Olympus Optical Co., Ltd. | Wide angle zoom lens system |
| US4792215A (en) * | 1983-02-02 | 1988-12-20 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens |
| JPH03255416A (en) * | 1990-03-05 | 1991-11-14 | Matsushita Electric Ind Co Ltd | Zoom lens |
| US5546232A (en) * | 1993-06-14 | 1996-08-13 | Asahi Kogaku Kogyo Kabushiki Kaisha | Two-group zoom lens |
| CN206002757U (en) * | 2016-08-25 | 2017-03-08 | 嘉兴中润光学科技有限公司 | A kind of wide-angle lens |
-
2016
- 2016-08-25 CN CN201610733641.7A patent/CN106125261A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323302A (en) * | 1979-03-02 | 1982-04-06 | Olympus Optical Co., Ltd. | Wide-angle zoom lens system |
| US4452512A (en) * | 1979-09-18 | 1984-06-05 | Olympus Optical Co., Ltd. | Wide angle zoom lens system |
| US4792215A (en) * | 1983-02-02 | 1988-12-20 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens |
| US4812022A (en) * | 1983-02-02 | 1989-03-14 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens |
| JPH03255416A (en) * | 1990-03-05 | 1991-11-14 | Matsushita Electric Ind Co Ltd | Zoom lens |
| US5546232A (en) * | 1993-06-14 | 1996-08-13 | Asahi Kogaku Kogyo Kabushiki Kaisha | Two-group zoom lens |
| CN206002757U (en) * | 2016-08-25 | 2017-03-08 | 嘉兴中润光学科技有限公司 | A kind of wide-angle lens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106791293A (en) * | 2016-11-23 | 2017-05-31 | 嘉兴中润光学科技有限公司 | A kind of optical system |
| CN106791293B (en) * | 2016-11-23 | 2023-08-18 | 嘉兴中润光学科技股份有限公司 | Optical system |
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Application publication date: 20161116 |