A kind of aspherical refractive and reflective panorama imaging lens
Technical field
The present invention relates to optical systems and device design field, and in particular to a kind of aspherical refractive and reflective panorama imaging
Camera lens.
Background technique
Currently, video monitoring system is widely used in each field, automobile, aircraft have been increasingly equipped with view on submarine
Frequency monitoring system, however traditional camera is due to camera lens limiting factor, thus visual field be it is extremely limited, in order to obtain big visual field,
Multiple sensors will often be increased.In this way, which increased costs are many, furthermore in order to which the image for obtaining multiple sensors melts
Panoramic picture is synthesized, multiple splicing is needed, complexity is big, and it is also relatively time consuming, it tends not to achieve the effect that real time monitoring,
Its function is enabled to have a greatly reduced quality.
Therefore, developing one kind can overcome the full shot of disadvantages mentioned above imperative.Existing full shot generally includes
Along extrawide angle lens, multiple optical lenses and the image sensor of same optical axis arrangement, optical lens and extrawide angle lens obtain respectively
Front and around 360 degree of ring fields of optical lens optical axis panoramic rays, Image Sensor can receive from extrawide angle lens with
And the light of imaging len incidence forms panoramic picture.The present invention develops one kind by the optimization and upgrading to existing full shot
It can be realized the omnidirectional imaging system of high definition imaging.
Summary of the invention
The object of the present invention is to provide a kind of aspherical refractive and reflective panorama imaging lens, to realize full view ultra-wide angle high definition
Imaging, and compact-sized, compact, the effect that is easily installed.
Technical scheme is as follows:
A kind of aspherical refractive and reflective panorama imaging lens, from object plane to image planes direction by ball cover, catadioptric microscope group, can darkening
Door screen and relaying microscope group are arranged successively composition;Wherein, catadioptric microscope group is by coaxially arranged and along catadioptric microscope group to relay lens prescription
To the first lens of catadioptric 21 and the second lens of catadioptric 22 composition being arranged successively, the first lens of catadioptric 21 and catadioptric the
Two lens 22 are connected by joint face, and the joint face is plane;The first lens of catadioptric 21 have first refractive face 12 and the
Two interior reflective surfaces 14, first refractive face 12 are the spherical convex surface of clear aperture 25-119mm, are 30mm away from joint face distance;Second
Interior reflective surface 14 is the spherical concave surface of clear aperture 25mm, is 27.6mm away from joint face distance;In the center in first refractive face 12
The outer ring side edge at ring edge and the second interior reflective surface 14;The second lens of catadioptric 22 have the first interior reflective surface 13 and second
Plane of refraction 16;First interior reflective surface 13 is the spherical concave surface towards object plane direction of clear aperture 21-72mm, away from joint face distance
For 40mm;Second plane of refraction 16 is plane, is 38.8mm away from joint face distance;The inner annular edge and second of first interior reflective surface 13
The outer ring side edge of plane of refraction 16;It relays microscope group and catadioptric microscope group is coaxially arranged, relaying microscope group is made of 10 lens;Point
Not Wei the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens,
9th lens and the tenth lens;It is divided into 6.45mm between first lens 1 and iris diaphgram, the first lens 1 are with a thickness of 11.4mm, and first
Lens 1 include 2 planes of refraction, are aspherical concave surface, clear aperture 22mm close to catadioptric microscope group direction plane of refraction;Another folding
Penetrating face is spherical convex surface, clear aperture 29.2mm;0.2mm, 2 thickness of the second lens are divided between second lens 2 and the first lens 1
For 12.95mm, it is spherical surface close to catadioptric microscope group direction plane of refraction, clear aperture is that the second lens 2, which include 2 planes of refraction,
30.1mm;Another plane of refraction is spherical surface, clear aperture 33.3mm;1.4mm, third are divided between the third lens 3 and the second lens 2
For lens 3 with a thickness of 4.5mm, the third lens 3 include 2 planes of refraction, are spherical surface, light admission port close to catadioptric microscope group direction plane of refraction
Diameter is 33.2mm;Another plane of refraction is spherical surface;4th lens 4 and the third lens 3 without interval, the 4th lens 4 with a thickness of 17.8mm,
4th lens 4 include 2 planes of refraction, are spherical surface, clear aperture 45.6mm close to catadioptric microscope group direction plane of refraction;Another folding
Penetrating face is spherical surface, clear aperture 50mm;Be divided into 0.2mm between 5th lens 5 and the 4th lens 4, the 5th lens 5 with a thickness of
18.16mm, the 5th lens 5 include 2 planes of refraction, are spherical surface close to catadioptric microscope group direction plane of refraction, clear aperture is
59.5mm;Another plane of refraction is spherical surface, clear aperture 60.7mm;It is divided into 0.2mm between 6th lens 6 and the 5th lens 5, the 6th
For lens 6 with a thickness of 4.4mm, the 6th lens 6 include 2 planes of refraction, are spherical surface, light admission port close to catadioptric microscope group direction plane of refraction
Diameter is 58.6mm;Another plane of refraction is spherical surface, clear aperture 54mm;0 is divided between 7th lens 7 and the 6th lens 6, the 7th thoroughly
For mirror 7 with a thickness of 20.45mm, the 7th lens 7 include 2 planes of refraction, are spherical surface, light admission port close to catadioptric microscope group direction plane of refraction
Diameter is 54mm;Another plane of refraction is spherical surface, clear aperture 52.9mm;It is divided into 0.2mm between 8th lens 8 and the 7th lens 7, the
For eight lens 8 with a thickness of 9.67mm, the 8th lens 8 include 2 planes of refraction, are spherical surface close to catadioptric microscope group direction plane of refraction, lead to
Optical port diameter is 48.8mm;Another plane of refraction is spherical surface, clear aperture 45.9mm;It is divided between 9th lens 9 and the 8th lens 8
0.2mm, the 9th lens 9 are with a thickness of 12.57mm, and the 9th lens 9 include 2 planes of refraction, close to catadioptric microscope group direction plane of refraction
For spherical surface, clear aperture 35.6mm;Another plane of refraction is spherical surface, clear aperture 28.8mm;Tenth lens 10 and the 9th are saturating
0 is divided between mirror 9, the tenth lens 10 are with a thickness of 3.58mm, and the tenth lens 10 include 2 planes of refraction, close to catadioptric microscope group direction
Plane of refraction is spherical surface, clear aperture 28.8mm;Another plane of refraction is spherical surface, clear aperture 20.8mm;Tenth lens 10 with
15.89mm is divided between image planes, clear aperture is 9.6mm at image planes.
Further, the second lens, the 4th lens, the 5th lens, the 7th lens and the 9th lens material are ultra-low dispersion
Material.
The present invention has the advantage that and has the beneficial effect that compared with the prior art
1) aspherical refractive and reflective panorama imaging lens provide angle enlargement ratio appropriate to expand visual field.It is mainly simultaneous when design
The requirement for caring for system focal length and structure size, carries out aberration correction under the premise of each visual field optical path is explicit.
2) visual field of the invention and aperture are all very big, and longer back work distance is from the installation space for ensuring other parts.
Image space chief ray and optical axis included angle very little, ensure that image illumination uniformity.
3) processability of product structure of lens is good, is conducive to process and reduce cost.
4) catadioptric microscope group uses lens group, can undertake bigger vertical field of view and relative aperture.
Detailed description of the invention
Attached drawing 1 is the aspherical refractive and reflective panorama imaging lens structural schematic diagram of the present invention.
Attached drawing 2 is the aspherical refractive and reflective panorama imaging lens light path schematic diagram of the present invention.
Wherein, the first lens of 1-, the second lens of 2-, 3- the third lens, the 4th lens of 4-, the 5th lens of 5-, 6- the 6th are saturating
Mirror, 7 the 7th lens, the 8th lens of 8-, the 9th lens of 9-, the tenth lens of 10-, 11- image planes, 12- first refractive face, 13- first
Interior reflective surface, the second interior reflective surface of 14-, 15- joint face, the second plane of refraction of 16-, 17- iris diaphgram, 21- catadioptric first are saturating
Mirror, the second lens of 22- catadioptric.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing, and following embodiment facilitates the understanding of the present invention,
It is relatively good application example, but is not construed as limiting thereof.
As shown in Figure 1, the present invention is aspherical refractive and reflective panorama imaging lens.Including catadioptric microscope group, iris diaphgram and
Relaying microscope group is arranged successively;Wherein, catadioptric microscope group have it is coaxially arranged and along catadioptric microscope group to relay lens group direction successively
The first lens of catadioptric 21 and the second lens of catadioptric 22 of arrangement, the first lens of catadioptric 21 and the second lens of catadioptric 22 are logical
Cross joint face connection.Relaying microscope group is made of 10 lens.
The first lens of catadioptric 21 have first refractive face 12 and the second interior reflective surface 14, and first refractive face 12 is light admission port
The spherical convex surface of diameter 25-119mm is 30mm away from joint face distance;Second interior reflective surface 14 is the spherical female of clear aperture 25mm
Face is 27.6mm away from joint face distance;The second lens of catadioptric 22 have the first interior reflective surface 13 and the second plane of refraction 16;First
Interior reflective surface 13 is the spherical concave surface of clear aperture 21-72mm, is 40mm away from joint face distance;Second plane of refraction 16 is plane,
It is 38.8mm away from joint face distance.The outer ring side edge of the inner annular edge of first interior reflective surface and the second plane of refraction.
Aspherical refractive and reflective panorama imaging lens provide angle enlargement ratio appropriate to expand visual field.This optical system optics
Visual field is ± 30 ° to ± 90 °, focal length 3mm.The requirement that system focal length and structure size are mainly taken into account when design, in each visual field
Aberration correction is carried out under the premise of optical path is explicit.Catadioptric microscope group does not carry out independent school aberration design, but allows system
Retain a certain amount of positive curvature of field, to be conducive to the aberration balancing of entire panorama system.Relay lens is an object lens of large relative aperture, in
Etc. visual fields optical system, convergence of rays is acted on strong, is easy to produce the negative curvature of field, can be with the positive curvature of field of reflection microscope group remnants
Balance.Meanwhile veneer type refractive and reflective panorama imaging lens belong to big aberration system, to reduce each advanced amount of aberration, should control as far as possible
Primary aberration processed.
As shown in Figure 1, detector is arranged at image planes receives optical imagery.
It relays microscope group and catadioptric microscope group is coaxially arranged.10 lens are respectively the first lens 1 in relaying microscope group, and second thoroughly
Mirror 2, the third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7, the 8th lens 8, the 9th lens 9 and
Ten lens 10.The effect of transmission-type relay lens is will to reflect the virtual image formed by microscope group to be imaged onto image planes with appropriate multiplying power.It protects
Pupil matching is demonstrate,proved, and optical aberration is corrected to certain state mutually to balance with catadioptric microscope group aberration.In in addition,
It is compact-sized after microscope group, it should not be separated too far between lens.Although preceding group of ray height is bigger, rear group has undertaken part light focus
Degree, is entered interpupillary distance by system and is limited, preceding group is not suitable for being re-introduced into negative power.
Relaying microscope group is specifically arranged as follows, and design parameter is shown in Table 1.
6.45mm is divided between first lens 1 and iris diaphgram.First lens 1 are with a thickness of 11.4mm.First lens 1 include 2
A plane of refraction is aspherical concave surface, clear aperture 22mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical shape
Convex surface, clear aperture 29.2mm.
0.2mm is divided between second lens 2 and the first lens 1.Second lens 2 are with a thickness of 12.95mm.Second lens 2 include 2
A plane of refraction is spherical surface, clear aperture 30.1mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, is led to
Optical port diameter is 33.3mm.
1.4mm is divided between the third lens 3 and the second lens 2.The third lens 3 are with a thickness of 4.5mm.The third lens 3 include 2
Plane of refraction is spherical surface, clear aperture 33.2mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface.
4th lens 4 are with the third lens 3 without interval.4th lens 4 are with a thickness of 17.8mm.4th lens 4 include 2 refractions
Face is spherical surface, clear aperture 45.6mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, clear aperture
For 50mm.
0.2mm is divided between 5th lens 5 and the 4th lens 4.5th lens 5 are with a thickness of 18.16mm.5th lens 5 include 2
A plane of refraction is spherical surface, clear aperture 59.5mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, is led to
Optical port diameter is 60.7mm.
0.2mm is divided between 6th lens 6 and the 5th lens 5.6th lens 6 are with a thickness of 4.4mm.6th lens 6 include 2
Plane of refraction is spherical surface, clear aperture 58.6mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, light passing
Bore is 54mm.
0 is divided between 7th lens 7 and the 6th lens 6.7th lens 7 are with a thickness of 20.45mm.7th lens 7 include 2 foldings
Face is penetrated, is spherical surface, clear aperture 54mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, clear aperture
For 52.9mm.
0.2mm is divided between 8th lens 8 and the 7th lens 7.8th lens 8 are with a thickness of 9.67mm.8th lens 8 include 2
A plane of refraction is spherical surface, clear aperture 48.8mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, is led to
Optical port diameter is 45.9mm.
0.2mm is divided between 9th lens 9 and the 8th lens 8.9th lens 9 are with a thickness of 12.57mm.9th lens 9 include 2
A plane of refraction is spherical surface, clear aperture 35.6mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, is led to
Optical port diameter is 28.8mm.
0 is divided between tenth lens 10 and the 9th lens 9.Tenth lens 10 are with a thickness of 3.58mm.Tenth lens 10 include 2
Plane of refraction is spherical surface, clear aperture 28.8mm close to catadioptric microscope group direction plane of refraction;Another plane of refraction is spherical surface, light passing
Bore is 20.8mm.
15.89mm, clear aperture 9.6mm are divided between tenth lens 10 and image planes.
The resolution capability of image space 200 lines it is right/mm or more, the resolution capability in no space is at 1.4 jiaos points or more.
The aspherical refractive and reflective panorama imaging lens optical data of table 1
In another preferred embodiment of the present, joint face described in catadioptric microscope group is plane.
In another preferred embodiment of the present, the first interior reflective surface 13 and the second interior reflective surface 14 plate high-reflecting film.First refractive
Face 12, the second plane of refraction 16 plate anti-reflection film.
In another preferred embodiment of the present, the second lens, the 4th lens, the 5th lens, the 7th lens and the 9th lens material
Material is ultra-low dispersion material.
The above embodiments do not limit the invention in any form, all using similar structure of the invention, method and its similar
Variation pattern technical solution obtained, all falls within protection scope of the present invention.