CN107632372A - A kind of periscopic two-way flake panorama system of adjustable focus - Google Patents
A kind of periscopic two-way flake panorama system of adjustable focus Download PDFInfo
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- CN107632372A CN107632372A CN201711004533.7A CN201711004533A CN107632372A CN 107632372 A CN107632372 A CN 107632372A CN 201711004533 A CN201711004533 A CN 201711004533A CN 107632372 A CN107632372 A CN 107632372A
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Abstract
The present invention provides a kind of periscopic two-way flake panorama system of adjustable focus, including lens barrel, and two camera lenses are symmetrically arranged with lens barrel.The camera lens sequentially includes condenser lens group, reflecting element and fixed lens group from object space to image space along optical axis, optical axis includes primary optic axis and second optical axis misaligned with primary optic axis, and primary optic axis and the second optical axis form plotted point on the reflecting surface of the reflecting element；Condenser lens group includes at least two lens arranged from object space to image space along primary optic axis, and condenser lens group meets conditional with the fixed lens group：0.2<∣Ff/Gf∣<1.3, wherein, Ff is the focal length of condenser lens group, and Gf is the focal length of fixed lens group.The camera lens there is f Θ distortion to be less than 9%, good imaging quality, the advantages that focusing on easily and be not easy to run Jiao up to 4K resolution ratio, 206 ° of oversized angle；Two camera lens visual angle angle sums are more than 360 degree, reach panorama and adopt picture.
Description
Technical field
The present invention relates to the periscopic two-way flake panorama system in acquisition technology field, more particularly to a kind of adjustable focus
System.
Background technology
With the raising of image-capable, the agitation of one panoramic shooting has gradually been risen in consumer market.It is so-called
" panorama " as the term suggests refer to it can be seen that up and down, left and right, front and rear comprehensive scenery.But to realize so big angle
Degree, only it is impossible by a camera lens.Therefore need to start with from image mosaic and solve this problem, what panorama system needed
Camera lens from 2 to ten more than.The scheme simple possible the most of image mosaic is wherein carried out with two-way fish eye lens.
Double light path flake panorama system is largely to add 2 fish eye lenses to form by 2 sensor at present.Its principle is exactly
It is that overall hardware plan design comparison is simple the advantages of this scheme by the image mosaic of two fish eye cameras to together.But
It needs two circuits to have the synchronism of height, and back-end software processing is more difficult, the problems such as picture incompleteness easily occurs, together
The width at the bigger two of Shi Tiji can reach 60mm, and weight is inconvenient to carry greatly to greatly limit marketing.Fish eye lens is adopted
With the structure of periscopic, light path is symmetrically imaged in side by side from middle 90 ° of deviation, two camera lenses using refraction or reflecting prism
Among 1 sensor.This structure has the advantages that synchronism is good, small volume.But the optical system of this deviation is not
The mode that directly can twist whole camera lens using traditional hickey to focus on.Current such optical system uses in camera lens more
Governor motion is added between image space and sensor and reaches the purpose of focusing, this side by adjusting the distance of camera lens and sensor
Method is complicated, and precision is relatively low, and a feasible focus program is still for single periscope type lens.But pair with
For double light path periscopic fish eye lens, due to 2 optical lens placed side by side, two are then needed using such a focus program
The optic back focal of camera lens has the uniformity of height, burnt inconsistent after two lens opticals arranged side by side, then just to occur
The result of the clear half fuzzy pictures of half picture.So, greatly hardly possible be present for the processing to camera lens and machining
Degree, therefore such camera lens volume production is difficult and also immature in the market.
The content of the invention
The present invention provides a kind of periscopic two-way flake panorama system of adjustable focus, solves Shortcomings in the prior art
Technical problem.
In order to solve the above-mentioned technical problem, the technical solution used in the present invention is：
A kind of optical imaging lens, sequentially include condenser lens group, reflecting element and fixation from object space to image space along optical axis
Lens group, the optical axis include primary optic axis and second optical axis misaligned with primary optic axis, the primary optic axis with it is described
Second optical axis forms plotted point on the reflecting surface of the reflecting element；The condenser lens group include at least two from object space to
The lens that image space arranges along primary optic axis, the condenser lens group meet conditional with the fixed lens group：
0.2<∣Ff/Gf∣<1.3, wherein, Ff is the focal length of condenser lens group, and Gf is the focal length of fixed lens group.
Further, the condenser lens group includes the first lens and second arranged from object space to image space along primary optic axis
Lens, it is the 3rd lens that the fixed lens group includes arranging along the second optical axis from object space to image space, the 4th lens, the 5th saturating
Mirror, the 6th lens and the 7th lens, second lens, the 4th lens, the 5th lens and the 6th lens respectively with whole camera lens
Meet conditional：
3<∣f2/f∣<7.5
5.1<∣f4/f∣<14.8,
0.8<∣f5/f∣<4.5
1.3<∣f6/f∣<4.8, wherein f are the focal length of whole camera lens, and f2, f4, f5, f6 be respectively the second lens, the 4th saturating
The focal length of mirror, the 5th lens and the 6th lens.
Further, second lens, the 4th lens, the 5th lens and the 6th lens are all non-spherical lens.
Further, the reflecting surface of the primary optic axis and the reflecting element is at 45 °, the primary optic axis and described the
Two optical axises are orthogonal.
Preferably, first lens are convex-concave negative-power lenses, and second lens are negative-power lenses, its picture
Square surface is convex surface, and object side surface is one kind in convex surface, concave surface and plane.
Preferably, the 3rd lens are positive power lens, and its image interface is convex surface, and object side surface is convex surface, recessed
One kind in face and plane；4th lens are negative-power lenses, and its object side surface is concave surface, image interface be convex surface,
One kind in concave surface and plane；5th lens are biconvex positive power lens；6th lens are concave-concave negative power
Lens；7th lens are biconvex positive power lens.
A kind of periscopic two-way flake panorama system of adjustable focus, including lens barrel, are symmetrical arranged in the lens barrel both ends
There are two above-mentioned camera lenses.
Further, the lens barrel includes base, and the fixed lens group is arranged on the base, the fixed lens
The image space side of group is provided with the imager chip for imaging.
Further, the lens barrel includes upper mirror holder, has a flat bottoms on the upper mirror holder, and the reflecting element is set
In the flat bottoms, the reflecting element is right-angle prism, and two camera lenses share the right-angle prism, and the two sides of right-angle prism
Plating is provided with total reflection film to be used as reflecting surface respectively.
Preferably, the condenser lens group is threadedly coupled the lens barrel by rotating, and during focusing, rotates lens barrel so that poly-
In being in a suitable distance on optical axis between focus lens group and reflecting element.
The present invention provides a kind of periscopic two-way flake panorama system of adjustable focus, symmetrically poly- using 1 at lens barrel both ends
Focus lens group and the camera lens of 1 fixed group of lens group two, wherein, each camera lens includes 3 glass spheric glasses and 4 modelings
Expect non-spherical lens.Fully with reference to having played, glass lens are easy to process and plastic aspherical element lens performance height, one for the camera lens
The advantages of cause property is good and in light weight so that the volume and weight of camera lens substantially reduce.And using two cluster structures camera lens is held
Easily focus on, lens focus hardly changes during focusing, at the same can reach -30~+80 degree environment under make
With Jiao is not run, solves the problems, such as production so that the difficulty of processing of whole camera lens substantially reduces.Using 3 glass spherical mirrors
Piece adds 4 plastic aspherical element pieces, and totally 7 eyeglasses can reach the oversized angle of single 206 ° of camera lens, and f Θ distortion is less than 9%, 4K
Ultra high-definition resolution ratio, the total length at two are less than 30mm, have very high market value.Two camera lens visual angle angle sums are more than
360 degree, reach panorama and adopt picture.
When panorama system is imaged, light enters from the condenser lens group of two camera lenses, and being all-trans through right-angle prism, it is fixed saturating to be incident upon
Lens group, it is imaged simultaneously on imager chip, and two rear lens focus are constant so that image quality is very high.
Brief description of the drawings
Fig. 1 is a kind of optical texture schematic diagram of the periscopic two-way flake panorama system of adjustable focus of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, embodiments of the present invention are specifically illustrated, accompanying drawing is only for reference and explanation uses, and does not form pair
The limitation of scope of patent protection of the present invention.
As shown in figure 1, a kind of optical imaging lens, condenser lens group, reflection are sequentially included from object space to image space along optical axis
Element 8 and fixed lens group, the optical axis include primary optic axis and second optical axis misaligned with primary optic axis, and described first
Optical axis forms plotted point with second optical axis on the reflecting surface of the reflecting element 8；The condenser lens group is included at least
Two lens arranged from object space to image space along primary optic axis, the condenser lens group meet condition with the fixed lens group
Formula：
0.2<∣Ff/Gf∣<1.3, wherein, Ff is the focal length of condenser lens group, and Gf is the focal length of fixed lens group.
In the present embodiment, the condenser lens group includes the He of the first lens 1 arranged from object space to image space along primary optic axis
Second lens 2, the fixed lens group include arranged from object space to image space along the second optical axis the 3rd lens 3, the 4th lens 4,
5th lens 5, the 6th lens 6 and the 7th lens 7, second lens 2, the 4th lens 4, the 5th lens 5 and the 6th lens 6 divide
Conditional is not met with whole camera lens：
3<∣f2/f∣<7.5
5.1<∣f4/f∣<14.8,
0.8<∣f5/f∣<4.5
1.3<∣f6/f∣<4.8, wherein f are the focal length of whole camera lens, and f2, f4, f5, f6 are respectively the second lens the 2, the 4th
The focal length of lens 4, the 5th lens 5 and the 6th lens 6.
In preferred scheme, the reflecting surface of the primary optic axis and the reflecting element 8 is at 45 °, the primary optic axis and institute
It is orthogonal to state the second optical axis.
Specifically, first lens 1 are convex-concave negative-power lenses, and second lens 2 are negative-power lenses, its
Image interface is convex surface, and object side surface is one kind in convex surface, concave surface and plane.3rd lens 3 are positive power lens,
Its image interface is convex surface, and object side surface is one kind in convex surface, concave surface and plane；4th lens 4 are that negative power is saturating
Mirror, its object side surface are concave surfaces, and image interface is one kind in convex surface, concave surface and plane；5th lens 5 are the positive light of biconvex
Power lenses；6th lens 6 are concave-concave negative-power lenses；7th lens 7 are biconvex positive power lens.It is each
The design parameter of the index of refraction in lens and focal length is as follows：
| F1=-20.8~-4.9 | N1=1.6~1.95 |
| F2=-12.5~-2.1 | N2=1.43~1.75 |
| F3=3.8~15.9 | N3=1.75~2.15 |
| F4=-20.1~-4.3 | N4=1.43~1.8 |
| F5=1.1~5.8 | N5=1.43~1.75 |
| F6=-6.5~-1.2 | N6=1.43~1.85 |
| F7=2.9~12.2 | N7=1.43~1.65 |
| F6=-6.5~-1.2 | N6=1.43~1.85 |
| F7=2.9~12.2 | N7=1.43~1.65 |
Wherein, f1 to f7 represents the first lens to the focal length of lens of the 7th lens respectively in order；N1 to n7 is in order
The first lens are represented respectively to the refractive index of the 7th lens.
In preferred scheme, second lens 2, the 4th lens 4, the 5th lens 5 and the 6th lens 6 are all to be aspherical
Mirror.Each lens mirror shape meets following equation for its：
Wherein, r represents radial coordinate, and unit is identical with length of lens unit, and c is the song corresponding to surface central radius
Rate, k are circular cone whose conic coefficient, α1To α8For high order aspheric surface coefficient.
Meet that the asphericity coefficient of above-mentioned aspherical equation formula is as follows in the present embodiment：
| S3 | S4 | S8 | S9 | S10 | S11 | S12 | S13 | |
| α1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| α2 | -4.20E-04 | -1.40E-03 | 4.38E-03 | -4.58E-03 | -8.12E-03 | 5.12E-05 | 3.40E-03 | 0.032 |
| α3 | -7.13E-04 | 5.88E-03 | 5.31E-03 | 9.19E-04 | 1.77E-03 | 8.11E-04 | 2.07E-03 | -8.72E-03 |
| α4 | -5.04E-04 | -4.89E-03 | -1.95E-03 | -1.83E-04 | 1.67E-04 | 5.36E-05 | 5.37E-03 | -6.32E-03 |
| α5 | 3.33E-04 | 2.35E-03 | -2.26E-03 | -3.71E-05 | 2.69E-06 | -3.09E-05 | 3.17E-03 | 0.013 |
| α6 | -8.61E-05 | -3.52E-04 | 1.70E-03 | 4.34E-05 | -1.92E-05 | 2.31E-05 | -1.27E-03 | -6.02E-03 |
| α7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| α8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
In the present embodiment, the physical optical parameter of camera lens is as follows：
| Face sequence number | Face type | R | D | nd | K values |
| S1 | Sphere | 23.61 | 2.75 | 1.77 | |
| S2 | Sphere | 5.58 | 3.93 | ||
| S3 | It is aspherical | -247.2 | 1.55 | 1.55 | -189.3 |
| S4 | It is aspherical | 2.88 | 5.73 (variable spaceds) | -6.15 | |
| S5 | Reflecting surface | Plane | 3.44 | ||
| S6 | Sphere | 33.74 | 1.17 | 2.1 | |
| S7 | Sphere | -12.21 | 0.55 | ||
| Diaphragm | Plane | Plane | 0.74 | ||
| S8 | It is aspherical | -5.44 | 1.27 | 1.64 | 8.12 |
| S9 | It is aspherical | -85.33 | 0.05 | -105.4 | |
| S10 | It is aspherical | 2.63 | 1 | 1.54 | -2.52 |
| S11 | It is aspherical | -2.39 | 0.05 | -0.17 | |
| S12 | It is aspherical | -3.68 | 0.47 | 1.64 | -10.47 |
| S13 | It is aspherical | 3.91 | 0.41 | 4.22 | |
| S14 | Sphere | 8.11 | 0.93 | 1.44 | |
| S15 | Sphere | -4.48 | |||
| S16 | Image planes | Plane |
Wherein, R is surface central radius size, and D is to correspond to optical surface to next optical surface in the distance on optical axis；
Nd corresponds to the refractive index of d light (wavelength 587nm)；S1 and S2 is the object side surface and image interface of the first lens 1, and S3 and S4 are
The object side surface and image interface of second lens 2, S5 represent the emitting surface of reflecting element, S6 and the thing that S7 is the 3rd lens 3
Square surface and image interface, diaphragm are plane where diaphragm；S8 and S9 is the object side surface and image interface of the 4th lens 4；S10
With the object side surface and image interface that S11 is the 5th lens 5；S12 and S13 is the object side surface and image interface of the 6th lens 6；
S14 and S15 is the object side surface and image interface of the 7th lens 7；S16 is plane where imager chip.
A kind of periscopic two-way flake panorama system of adjustable focus, including lens barrel, are symmetrical arranged in the lens barrel both ends
There are two above-mentioned camera lenses.The lens barrel includes base 12, and the fixed lens group is arranged on the base 12, the fixation
The image space side of lens group is provided with the imager chip 13 for imaging.During imaging, two camera lenses carry out choosing location to outside respectively, and
It is imaged by lens focus to same imager chip, rear Jiao of two camera lenses is fixed and is imaged simultaneously on same imager chip,
So two camera lenses into image synchronism it is very good, image quality is high.
The lens barrel includes upper mirror holder 11, has a flat bottoms on the upper mirror holder 11, the reflecting element 8 is arranged on institute
State in flat bottoms, the reflecting element 8 is right-angle prism, and two camera lenses share the right-angle prism, and the two sides of right-angle prism point
Total reflection film Du be provided with to be used as reflecting surface.Right-angle prism has very high symmetry, can meet high quality imaging
It is required that.
The condenser lens group is threadedly coupled the lens barrel by rotating, and during focusing, rotates lens barrel so that condenser lens group
It is the image interface of the second lens to the side of right-angle prism in being in a suitable distance on optical axis between reflecting element 8
Reflecting surface can change in the distance on optical axis with focussing process, when reaching optimum focusing effect, that is, reach properly away from
From.
During mounted lens, first lens 1 are directly abutted against with the second lens 2, the 3rd lens 3 and the 4th lens 4
Abutted by spacer ring, the 4th lens 3 are abutted with the 5th lens 4 by spacer ring, and the 5th lens 5 and the 6th lens 6 are logical
Cross spacer ring to abut, the 6th lens 6 are abutted with the 7th lens 7 by spacer ring.
Above disclosed is only presently preferred embodiments of the present invention, it is impossible to the rights protection model of the present invention is limited with this
Enclose, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (10)
- A kind of 1. optical imaging lens, it is characterised in that：Sequentially include condenser lens group, reflector from object space to image space along optical axis Part and fixed lens group, the optical axis include primary optic axis and second optical axis misaligned with primary optic axis, first light Axle forms plotted point with second optical axis on the reflecting surface of the reflecting element；The condenser lens group includes at least two The lens arranged from object space to image space along primary optic axis, the condenser lens group meet conditional with the fixed lens group：0.2<∣Ff/Gf∣<1.3, wherein, Ff is the focal length of condenser lens group, and Gf is the focal length of fixed lens group.
- A kind of 2. optical imaging lens according to claim 1, it is characterised in that：The condenser lens group is included from object space The first lens and the second lens arranged to image space along primary optic axis, the fixed lens group are included from object space to image space along second The 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens of optical axis arrangement, it is second lens, the 4th saturating Mirror, the 5th lens and the 6th lens meet conditional with whole camera lens respectively：3<∣f2/f∣<7.55.1<∣f4/f∣<14.8,0.8<∣f5/f∣<4.51.3<∣f6/f∣<4.8, wherein f be whole camera lens focal length, f2, f4, f5, f6 be respectively the second lens, the 4th lens, The focal length of 5th lens and the 6th lens.
- A kind of 3. optical imaging lens according to claim 2, it is characterised in that：Second lens, the 4th lens, Five lens and the 6th lens are all non-spherical lens.
- A kind of 4. optical imaging lens according to claim 2, it is characterised in that：The primary optic axis and the reflector The reflecting surface of part is at 45 °, and the primary optic axis and second optical axis are orthogonal.
- A kind of 5. optical imaging lens according to claim 2, it is characterised in that：First lens are that convex-concave bears light focus Lens are spent, second lens are negative-power lenses, and its image interface is convex surface, and object side surface is convex surface, concave surface and plane In one kind.
- A kind of 6. optical imaging lens according to claim 2, it is characterised in that：3rd lens are that positive light coke is saturating Mirror, its image interface are convex surface, and object side surface is one kind in convex surface, concave surface and plane；4th lens are negative power Lens, its object side surface are concave surfaces, and image interface is one kind in convex surface, concave surface and plane；5th lens be biconvex just Power lenses；6th lens are concave-concave negative-power lenses；7th lens are biconvex positive power lens.
- 7. a kind of periscopic two-way flake panorama system of adjustable focus, including lens barrel, it is characterised in that：It is symmetrical in the lens barrel It is provided with two camera lenses as described in claim any one of 2-6.
- A kind of 8. periscopic two-way flake panorama system of adjustable focus according to claim 7, it is characterised in that：The mirror Cylinder includes base, and the fixed lens group is arranged on the base, and the image space side of the fixed lens group, which is provided with, to be used for The imager chip of imaging.
- A kind of 9. periscopic two-way flake panorama system of adjustable focus according to claim 8, it is characterised in that：The mirror Cylinder includes upper mirror holder, has a flat bottoms on the upper mirror holder, the reflecting element is arranged in the flat bottoms, the reflection Element is right-angle prism, and two camera lenses share the right-angle prism, and the two sides of right-angle prism are plated provided with total reflection film to make respectively For reflecting surface.
- A kind of 10. periscopic two-way flake panorama system of adjustable focus according to claim 7, it is characterised in that：It is described Condenser lens group is threadedly coupled the lens barrel by rotating, and during focusing, rotates lens barrel so that condenser lens group and reflecting element it Between in being in a suitable distance on optical axis.
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| CN201711004533.7A CN107632372B (en) | 2017-10-25 | 2017-10-25 | Periscope type double-path fisheye panoramic system capable of focusing |
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| CN201711004533.7A CN107632372B (en) | 2017-10-25 | 2017-10-25 | Periscope type double-path fisheye panoramic system capable of focusing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769884A (en) * | 2020-09-02 | 2020-10-13 | 北京中创为南京量子通信技术有限公司 | Panoramic beacon light capturing system |
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| CN106168707A (en) * | 2016-06-28 | 2016-11-30 | 嘉兴中润光学科技有限公司 | A kind of imaging device |
| CN106502038A (en) * | 2016-11-10 | 2017-03-15 | 福建福特科光电股份有限公司 | 720 ° of panoramic shooting systems |
| CN206270646U (en) * | 2016-11-10 | 2017-06-20 | 福建福特科光电股份有限公司 | 720 ° of panoramic shooting systems |
| CN207380324U (en) * | 2017-10-25 | 2018-05-18 | 东莞市宇瞳光学科技股份有限公司 | A kind of optical imaging lens and the panorama system comprising the camera lens |
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| CN111769884A (en) * | 2020-09-02 | 2020-10-13 | 北京中创为南京量子通信技术有限公司 | Panoramic beacon light capturing system |
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