CN206757162U - Iris lens - Google Patents
Iris lens Download PDFInfo
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- CN206757162U CN206757162U CN201720545624.0U CN201720545624U CN206757162U CN 206757162 U CN206757162 U CN 206757162U CN 201720545624 U CN201720545624 U CN 201720545624U CN 206757162 U CN206757162 U CN 206757162U
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Abstract
This application provides a kind of iris lens, the iris lens sequentially include the first lens and the second lens along optical axis by thing side to image side.Wherein, the first lens have positive light coke, and its thing side is convex surface, and image side surface is concave surface；Second lens have a negative power, and the distance TTL of the imaging surface of the spacing distance T12 and the first lens of the first lens and the second lens on optical axis thing side to iris lens on optical axis meets T12/TTL>0.32.
Description
Technical field
The present invention relates to a kind of iris lens, more particularly it relates to a kind of iris lens for including two panels lens.
Background technology
In recent years, with the development of science and technology, portable type electronic product progressively rises, and has the portable of camera function
Electronic product, which obtains people, more to be favored, therefore market is gradual to the demand of the pick-up lens suitable for portable type electronic product
Increase.The photo-sensitive cell of currently used pick-up lens is generally CCD and (Charge-Coupled Device, feels optical coupling element
Part) or CMOS (Complementary Metal-Oxide Semiconductor, Complimentary Metal-Oxide semiconductor element).
With progressing greatly for manufacture of semiconductor technology, optical system is intended to higher pixel, and the Pixel Dimensions of chip are less and less, to matching
The high image quality and miniaturization for covering the camera lens used propose higher requirement.
Particularly in safety-security area, requirement to the camera lens with iris recognition also more and more higher, not only need to ensure mirror
Header structure it is compact, it is also necessary to the brightness and resolving power of camera lens are improved, to lift the accuracy of identification of camera lens.
Accordingly, it is desirable to provide a kind of high brightness, high resolution, compact iris lens simple in construction.
Utility model content
The technical scheme that the application provides solves the problems, such as techniques discussed above at least in part.
Such a iris lens are provided according to the one side of the application, the iris lens are along optical axis by thing side to picture
Side sequentially includes the first lens and the second lens.Wherein, the first lens have positive light coke, and its thing side is convex surface, image side surface
For concave surface；Second lens have negative power, the spacing distance T12 and the first lens of the first lens and the second lens on optical axis
Thing side can meet T12/TTL between distance TTL of the imaging surface on optical axis of iris lens>0.32.
The application employs multi-disc (for example, two panels) lens, passes through the focal power of each eyeglass of reasonable distribution optical lens
And face type, during lens construction is simplified, make system that there is the advantage that relative illumination is high and resolving power is high.
Such a iris lens are additionally provided according to further aspect of the application, the iris lens are along optical axis by thing side
Sequentially include the first lens and the second lens to image side.Wherein, the first lens have positive light coke, and its thing side is convex surface, as
Side is concave surface；Second lens have negative power, the effective radius DT11 of the thing side of the first lens and the picture of the second lens
It can meet 0.7 between the effective radius DT22 of side<DT11/DT22<1.
In one embodiment, the maximum gauge ET1max and first of the first lens in a direction parallel to the optical axis is saturating
It can meet 1 between the minimum thickness ET1min of mirror in a direction parallel to the optical axis<ET1max/ET1min<1.45.
In one embodiment, iris lens also include the electronics photo-sensitive cell being arranged on imaging surface, wherein, key light
The maximum incident angle degree CRAmax of line incident electron photo-sensitive cell can meet CRAmax<30°.
In one embodiment, the edge thickness ET1 of the first lens and the first lens are in the center thickness CT1 on optical axis
Between can meet 0.5<ET1/CT1<1.
In one embodiment, iris lens also include the optical filter being arranged between the second lens and imaging surface, should
Optical filter is IR infrared fileters.
In one embodiment, the band logical wave band of above-mentioned IR infrared fileters can be about 785nm to about 835nm.
In one embodiment, the thing side of the first lens to iris lens distance TTL of the imaging surface on optical axis,
The half ImgH of electronics photo-sensitive cell effective pixel area diagonal line length and iris lens always has on the imaging surface of iris lens
It can meet 0.4mm between effect focal length-1<TTL/(ImgH*f)<0.7mm-1。
In one embodiment, the image side surface of the effective radius DT12 of the image side surface of the first lens and the second lens has
It can meet 0.7 between effect radius DT22<DT12/DT22<1.
In one embodiment, electricity on the effective radius DT22 of the image side surface of the second lens and the imaging surface of iris lens
It can meet 0.5 between the half ImgH of sub- photo-sensitive cell effective pixel area diagonal line length<DT22/ImgH<1.
In one embodiment, iris lens also include the aperture diaphragm being arranged between thing side and the first lens, the
Can meet between the radius of curvature R 4 of the image side surface of two lens and total effective focal length f of iris lens | R4/f |<3.
In one embodiment, iris lens also include the aperture light being arranged between the first lens and the second lens
Door screen, 0.5 can be met between the effective focal length f1 of the lens of radius of curvature R 2 and first of the image side surface of the first lens<R2/f1<0.9.
By the iris lens of above-mentioned configuration, can also further have for example high accuracy of identification, effectively correct aberration, have
The effect correction curvature of field, shorten at least one beneficial effects such as overall length of system.
Brief description of the drawings
With reference to accompanying drawing, by the detailed description of following non-limiting embodiment, other features of the invention, purpose and excellent
Point will be apparent.In the accompanying drawings：
Fig. 1 shows the structural representation of the iris lens according to the embodiment of the present application 1；
Fig. 2A shows chromatic curve on the axle of the iris lens of embodiment 1；
Fig. 2 B show the astigmatism curve of the iris lens of embodiment 1；
Fig. 2 C show the distortion curve of the iris lens of embodiment 1；
Fig. 2 D show the ratio chromatism, curve of the iris lens of embodiment 1；
Fig. 2 E show the relative illumination curve of the iris lens of embodiment 1；
Fig. 3 shows the structural representation of the iris lens according to the embodiment of the present application 2；
Fig. 4 A show chromatic curve on the axle of the iris lens of embodiment 2；
Fig. 4 B show the astigmatism curve of the iris lens of embodiment 2；
Fig. 4 C show the distortion curve of the iris lens of embodiment 2；
Fig. 4 D show the ratio chromatism, curve of the iris lens of embodiment 2；
Fig. 4 E show the relative illumination curve of the iris lens of embodiment 2；
Fig. 5 shows the structural representation of the iris lens according to the embodiment of the present application 3；
Fig. 6 A show chromatic curve on the axle of the iris lens of embodiment 3；
Fig. 6 B show the astigmatism curve of the iris lens of embodiment 3；
Fig. 6 C show the distortion curve of the iris lens of embodiment 3；
Fig. 6 D show the ratio chromatism, curve of the iris lens of embodiment 3；
Fig. 6 E show the relative illumination curve of the iris lens of embodiment 3；
Fig. 7 shows the structural representation of the iris lens according to the embodiment of the present application 4；
Fig. 8 A show chromatic curve on the axle of the iris lens of embodiment 4；
Fig. 8 B show the astigmatism curve of the iris lens of embodiment 4；
Fig. 8 C show the distortion curve of the iris lens of embodiment 4；
Fig. 8 D show the ratio chromatism, curve of the iris lens of embodiment 4；
Fig. 8 E show the relative illumination curve of the iris lens of embodiment 4；
Fig. 9 shows the structural representation of the iris lens according to the embodiment of the present application 5；
Figure 10 A show chromatic curve on the axle of the iris lens of embodiment 5；
Figure 10 B show the astigmatism curve of the iris lens of embodiment 5；
Figure 10 C show the distortion curve of the iris lens of embodiment 5；
Figure 10 D show the ratio chromatism, curve of the iris lens of embodiment 5；
Figure 10 E show the relative illumination curve of the iris lens of embodiment 5；
Figure 11 shows the structural representation of the iris lens according to the embodiment of the present application 6；
Figure 12 A show chromatic curve on the axle of the iris lens of embodiment 6；
Figure 12 B show the astigmatism curve of the iris lens of embodiment 6；
Figure 12 C show the distortion curve of the iris lens of embodiment 6；
Figure 12 D show the ratio chromatism, curve of the iris lens of embodiment 6；
Figure 12 E show the relative illumination curve of the iris lens of embodiment 6.
Embodiment
In order to more fully understand the application, refer to the attached drawing is made into more detailed description to the various aspects of the application.Should
Understand, these describe the description of the simply illustrative embodiments to the application in detail, rather than limit the application in any way
Scope.In the specification, identical reference numbers identical element.Stating "and/or" includes associated institute
Any and all combinations of one or more of list of items.
It should be noted that in this manual, the statement of first, second grade is only used for a feature and another feature differentiation
Come, and do not indicate that any restrictions to feature.Therefore, it is discussed below in the case of without departing substantially from teachings of the present application
First lens are also known as the second lens.
In the accompanying drawings, for convenience of description, thickness, the size and dimension of lens are somewhat exaggerated.Specifically, accompanying drawing
Shown in sphere or aspherical shape be illustrated by way of example.That is, sphere or aspherical shape is not limited to accompanying drawing
In the sphere that shows or aspherical shape.Accompanying drawing is merely illustrative and and non-critical drawn to scale.
In addition, near axis area refers to the region near optical axis.Herein, claim in each lens near the surface of object
For thing side, it is referred to as image side surface near the surface of imaging surface in each lens.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
Represent stated feature, entirety, step, operation, element and/or part be present when being used in bright book, but do not exclude the presence of or
It is attached with one or more of the other feature, entirety, step, operation, element, part and/or combinations thereof.In addition, ought be such as
When the statement of " ... at least one " is appeared in after the list of listed feature, whole listed feature, rather than modification are modified
Individual component in list.In addition, when describing presently filed embodiment, use " can with " represent " one of the application or
Multiple embodiments ".Also, term " exemplary " is intended to refer to example or illustration.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein be respectively provided with
The application one skilled in the art's is generally understood that identical implication.It will also be appreciated that term (such as in everyday words
Term defined in allusion quotation) implication consistent with their implications in the context of correlation technique should be interpreted as having, and
It will not explained with idealization or excessively formal sense, unless clearly so limiting herein.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The feature of the application, principle and other aspects are described in detail below.
Include such as two lens according to the iris lens of the application illustrative embodiments, i.e. the first lens and second saturating
Mirror.First lens and the second lens are along optical axis from thing side to image side sequential.
In the exemplary embodiment, the first lens can have positive light coke, and its thing side is convex surface, and image side surface is recessed
Face；And second lens can have negative power.
Alternatively, iris lens may also include the optical filter being arranged between the second lens and imaging surface.The optical filter can
For IR infrared fileters, IR infrared fileters can be used for filtering visible optical noise, so as to realize the high-performance recognition effect of camera lens.
The band logical wave band of the optical filter can be about 785nm to about 835nm, to ensure that the iris of different ethnic group eyeball colors can be correct
Identification.
In the exemplary embodiment, the thing of spacing distance T12 and the first lens on the axle of the first lens and the second lens
It can meet T12/TTL between distance TTL on side to the axle of the imaging surface of iris lens>0.32, more specifically, T12 and TTL enter
One step can meet 0.33≤T12/TTL≤0.43.Spacing distance T12 and on the axle of the lens of reasonable disposition first and the second lens
Distance TTL can reduce angle of incidence of light degree, reduce optical aberration on the thing side of one lens to the axle of the imaging surface of iris lens,
So as to lift the resolving power of camera lens.
In order to realize the miniaturization of camera lens, the effective radius of each minute surface can be optimized.For example, the thing side of the first lens
It can meet 0.7 between the effective radius DT22 of the effective radius DT11 in face and the image side surface of the second lens<DT11/DT22<1, more
Specifically, DT11 and DT22 can further meet 0.80≤DT11/DT22≤0.99.In another example the image side surface of the first lens
It can meet 0.7 between the effective radius DT22 of the image side surface of effective radius DT12 and the second lens<DT12/DT22<1, more specifically
Ground, DT12 and DT22 can further meet 0.72≤DT12/DT22≤0.86.
In addition, in order to realize the matched well realized while Lens miniaturization with chip, can be to the second lens
The effective radius DT22 of image side surface and the imaging surface of iris lens on electronics photo-sensitive cell effective pixel area diagonal line length
Half ImgH carries out reasonable disposition.0.5 can be met between DT22 and ImgH<DT22/ImgH<1, more specifically, DT22 and ImgH
0.56≤DT22/ImgH≤0.79 can further be met.
In the exemplary embodiment, the maximum gauge ET1max and first of the first lens in a direction parallel to the optical axis
It can meet 1 between the minimum thickness ET1min of lens in a direction parallel to the optical axis<ET1max/ET1min<1.45 more specifically
Ground, ET1max and ET1min can further meet 1.10≤ET1max/ET1min≤1.40, to ensure the light focus of the first lens
Degree, so that it is guaranteed that the accuracy of identification of iris lens.
In the exemplary embodiment, the edge thickness ET1 of the first lens and the first lens are in the center thickness on optical axis
0.5 can be met between CT1<ET1/CT1<1, more specifically, ET1 and CT1 can further meet 0.53≤ET1/CT1≤0.74,
To ensure that overall focal power of first lens from center to edge is just, so that it is guaranteed that the accuracy of identification of iris lens.
In order to effectively reduce the drift of the membrane system under surrounding visual field incident angle, reduce membrane system bandwidth, so as to reduce interference
Effect.The maximum incident angle degree of chief ray incident electronics photo-sensitive cell can also be optimized.The photosensitive member of chief ray incident electronics
The maximum incident angle degree CRAmax of part can meet CRAmax<30 °, more specifically, CRAmax can further meet 24.14 °≤
CRAmax≤29.03°.Such configuration can also effectively lift the light receiving efficiency that light enters chip, so as to lift iris
The recognition effect of camera lens.
It is electric on the imaging surface of distance TTL, iris lens on the thing side of first lens to the axle of the imaging surface of iris lens
It can meet between the half ImgH of sub- photo-sensitive cell effective pixel area diagonal line length and total effective focal length of iris lens
0.4mm-1<TTL/(ImgH*f)<0.7mm-1, more specifically, TTL, ImgH and f can further meet 0.61mm-1≤TTL/
(ImgH*f)≤0.67mm-1.To ensure while ensureing that Lens are as small as possible so that iris lens have enough knowledges
Other precision.
In some embodiments, the aperture diaphragm of confine optical beam can be provided between thing side and the first lens, with
Lift the image quality of camera lens.Now, total effective focal length f of the radius of curvature R 4 of the image side surface of the second lens and iris lens it
Between can meet | R4/f |<3, more specifically, R4 and f can further meet 0.65≤| R4/f |≤2.98, to realize iris lens
High brightness and high resolution.
In other embodiments, the aperture light of confine optical beam can be provided between the first lens and the second lens
Door screen, to lift the image quality of camera lens.Now, the effective focal length of the lens of radius of curvature R 2 and first of the image side surface of the first lens
0.5 can be met between f1<R2/f1<0.9, more specifically, 0.73≤R2/f1≤0.81, to reduce coma influence, lifts camera lens
Resolving power.
Multi-disc eyeglass can be used according to the iris lens of the above-mentioned embodiment of the application, passes through each lens of reasonable distribution
Spacing etc. on axle between focal power, face type, the center thickness of each lens and each lens, can effectively compact lens barrel structure, protect
The miniaturization of camera lens is demonstrate,proved, so that iris lens are more beneficial for producing and processing and being applicable to portable type electronic product.
In presently filed embodiment, at least one in the minute surface of each lens is aspherical mirror.The characteristics of non-spherical lens is：It is bent
Rate is consecutive variations from lens centre to periphery.It is different from there is the spherical lens of constant curvature from lens centre to periphery, it is non-
Spherical lens has more preferably radius of curvature characteristic, and having improves the advantages of distorting aberration and improving astigmatic image error.Using aspheric
After the lens of face, the aberration occurred when imaging can be eliminated as much as possible, so as to improve image quality.
However, it will be understood by those of skill in the art that without departing from this application claims technical scheme situation
Under, the lens numbers for forming camera lens can be changed, to obtain each result and advantage described in this specification.Although for example,
It is described in embodiment by taking two lens as an example, but the iris lens are not limited to include two lens.If desired,
The iris lens may also include the lens of other quantity.
The specific embodiment for the iris lens for being applicable to above-mentioned embodiment is further described with reference to the accompanying drawings.
Embodiment 1
Iris lens referring to Fig. 1 to Fig. 2 E descriptions according to the embodiment of the present application 1.Fig. 1 is shown according to the application
The structural representation of the iris lens of embodiment 1.
As shown in figure 1, iris lens include from thing side to two lens L1 and L2 into image side sequential along optical axis.
First lens L1, there is thing side S1 and image side surface S2；And the second lens L2, there is thing side S3 and image side surface S4.It is optional
Ground, iris lens may also include the optical filter L3 with thing side S5 and image side surface S6.Optical filter L3 can be IR infrared fileters,
Its band logical wave band is about 785nm to about 835nm.In the iris lens of the present embodiment, can also thing side and the first lens L1 it
Between be provided for the aperture STO of confine optical beam, to improve image quality.Light from object sequentially passes through each surface S1 to S6 simultaneously
It is ultimately imaged on imaging surface S7.
Table 1 shows surface type, radius of curvature, thickness, material and the circular cone of each lens of iris lens in embodiment 1
Coefficient.
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | It is infinite | 260.0000 | ||
| STO | Sphere | It is infinite | -0.3561 | ||
| S1 | It is aspherical | 1.3231 | 0.9308 | 1.492/81.61 | 0.4593 |
| S2 | It is aspherical | 4.3707 | 1.7510 | 1.0000 | |
| S3 | It is aspherical | -5.4140 | 0.4544 | 1.622/23.53 | 1.0000 |
| S4 | It is aspherical | 5.5684 | 0.1692 | -63.9236 | |
| S5 | Sphere | It is infinite | 0.2100 | 1.517/64.17 | |
| S6 | Sphere | It is infinite | 0.6000 | ||
| S7 | Sphere | It is infinite |
Table 1
The present embodiment employs two panels lens as an example, by the focal length of each eyeglass of reasonable distribution and face type, effectively contracting
Short camera lens total length, lifts the relative illumination of camera lens and the accuracy of identification of camera lens；All kinds of aberrations are corrected simultaneously, improve the solution of camera lens
Analysis degree and image quality.Each aspherical face type x is limited by below equation：
Wherein, x be it is aspherical along optical axis direction when being highly h position, away from aspheric vertex of surface apart from rise；C is
Aspherical paraxial curvature, c=1/R (that is, paraxial curvature c is the mean curvature radius R of upper table 1 inverse)；K be circular cone coefficient (
Provided in upper table 1)；Ai is the correction factor of aspherical i-th-th ranks.Table 2 below is shown available for each aspheric in embodiment 1
Face minute surface S1-S4 high order term coefficient A4、A6、A8、A10、A12、A14And A16。
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -2.7825E-02 | -2.3370E-02 | 4.0932E-02 | -1.3584E-01 | 1.5653E-01 | -8.2473E-02 | 0.0000E+00 |
| S2 | 4.1007E-02 | 1.2926E-01 | -4.3835E-01 | 1.1608E+00 | -1.4200E+00 | 7.5082E-01 | 0.0000E+00 |
| S3 | -3.0579E-01 | -7.7277E-01 | 4.4362E+00 | -1.5260E+01 | 2.8847E+01 | -2.9261E+01 | 1.2011E+01 |
| S4 | -2.2537E-01 | -4.8696E-02 | 3.7403E-01 | -8.0992E-01 | 8.8518E-01 | -5.0706E-01 | 1.1906E-01 |
Table 2
Table 3 gives total effective focal length f of the iris lens of embodiment 1, the first lens L1 effective focal length f1, second saturating
Mirror L2 effective focal length f2, optics total length TTL (that is, the first lens L1 thing side S1 to iris lens of iris lens
Distances of the imaging surface S7 on optical axis) and the imaging surface S7 of iris lens on electronics photo-sensitive cell effective pixel area it is diagonal
The half ImgH of line length.
| Parameter | f(mm) | f1(mm) | f2(mm) | TTL(mm) | ImgH(mm) |
| Numerical value | 4.30 | 3.50 | -4.35 | 4.12 | 1.43 |
Table 3
It can be obtained by table 3, electronics photo-sensitive cell effective pixel area on the optics total length TTL and imaging surface S7 of iris lens
Meet TTL/ (ImgH*f)=0.67mm between the half ImgH of diagonal line length and total effective focal length f of iris lens-1.With reference to
Table 1 and table 3 can obtain, and meet between the second lens L2 image side surface S4 radius of curvature R 4 and total effective focal length f of iris lens |
R4/f |=1.30；The spacing distance T12 and iris lens of first lens L1 and the second lens L2 on optical axis optics total length
Meet T12/TTL=0.43 between TTL.
In this embodiment, the center thickness CT1 of the first lens L1 edge thickness ET1 and the first lens L1 on optical axis
Between meet ET1/CT1=0.74；First lens L1 thing side S1 effective radius DT11 and the image side surface S4 of the second lens
Effective radius DT22 between meet DT11/DT22=0.80；First lens L1 image side surface S2 effective radius DT12 and
Meet DT12/DT22=0.72 between the image side surface S4 of two lens effective radius DT22；The image side surface S4's of second lens has
Meet DT22/ between the half ImgH of electronics photo-sensitive cell effective pixel area diagonal line length on effect radius DT22 and imaging surface S7
ImgH=0.79；First lens L1 maximum gauge ET1max in a direction parallel to the optical axis and the first lens L1 parallel to
Meet ET1max/ET1min=1.20 between minimum thickness ET1min on the direction of optical axis；The photosensitive member of chief ray incident electronics
CRAmax=24.14 ° of the maximum incident angle degree of part.
Fig. 2A shows chromatic curve on the axle of the iris lens of embodiment 1, and it represents the light of different wave length via rainbow
Converging focal point after film camera lens deviates.Fig. 2 B show the astigmatism curve of the iris lens of embodiment 1, and it represents that meridianal image surface is curved
The bending of bent and sagittal image surface.Fig. 2 C show the distortion curve of the iris lens of embodiment 1, and it is represented in the case of different visual angles
Distort sizes values.Fig. 2 D show the ratio chromatism, curve of the iris lens of embodiment 1, after it represents light via iris lens
The deviation of different image heights on imaging surface.Fig. 2 E show the relative illumination curve of the iris lens of embodiment 1, and it is represented
Relative illumination on imaging surface corresponding to different image heights.Understood according to Fig. 2A to Fig. 2 E, the iris lens energy given by embodiment 1
Enough realize good image quality.
Embodiment 2
The iris lens according to the embodiment of the present application 2 are described referring to Fig. 3 to Fig. 4 E.In the present embodiment and following reality
Apply in example, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application 2
The structural representation of iris lens.
As shown in figure 3, iris lens include from thing side to two lens L1 and L2 into image side sequential along optical axis.
First lens L1, there is thing side S1 and image side surface S2；And the second lens L2, there is thing side S3 and image side surface S4.It is optional
Ground, iris lens may also include the optical filter L3 with thing side S5 and image side surface S6.Optical filter L3 can be IR infrared fileters,
Its band logical wave band is about 785nm to about 835nm.In the iris lens of the present embodiment, can also thing side and the first lens L1 it
Between be provided for the aperture STO of confine optical beam, to improve image quality.Light from object sequentially passes through each surface S1 to S6 simultaneously
It is ultimately imaged on imaging surface S7.
Table 4 shows surface type, radius of curvature, thickness, material and the circular cone of each lens of iris lens in embodiment 2
Coefficient.Table 5 shows the high order term coefficient A available for each aspherical mirror in embodiment 24、A6、A8、A10、A12、A14And A16.Table
6 give total effective focal length f of the iris lens of embodiment 2, the first lens L1 effective focal length f1, the second lens L2 it is effective
Electronics photo-sensitive cell effective pixel region on focal length f2, the optics total length TTL of iris lens and iris lens imaging surface S7
The half ImgH of domain diagonal line length.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | It is infinite | 260.0000 | ||
| STO | Sphere | It is infinite | -0.3582 | ||
| S1 | It is aspherical | 1.3193 | 0.7814 | 1.537/56.11 | 0.5705 |
| S2 | It is aspherical | 3.7234 | 1.6091 | -99.0000 | |
| S3 | It is aspherical | -4.2966 | 0.4926 | 1.622/23.53 | -14.7456 |
| S4 | It is aspherical | 11.5314 | 0.1064 | 1.0000 | |
| S5 | Sphere | It is infinite | 0.2100 | 1.517/64.17 | |
| S6 | Sphere | It is infinite | 0.8749 | ||
| S7 | Sphere | It is infinite |
Table 4
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -2.6160E-02 | -9.8112E-02 | 3.2590E-01 | -7.3463E-01 | 7.5777E-01 | -3.2925E-01 | 0.0000E+00 |
| S2 | 2.6250E-01 | -5.4990E-01 | 1.2654E+00 | -1.7467E+00 | 1.3458E+00 | -3.6374E-01 | 0.0000E+00 |
| S3 | -3.3351E-01 | -2.7563E-01 | 4.8402E-01 | -4.3714E-01 | -1.9811E+00 | 3.7155E+00 | -2.4914E+00 |
| S4 | -2.0495E-01 | -7.0167E-02 | 2.8496E-01 | -4.8863E-01 | 4.2976E-01 | -2.0449E-01 | 4.1370E-02 |
Table 5
| Parameter | f(mm) | f1(mm) | f2(mm) | TTL(mm) | ImgH(mm) |
| Numerical value | 4.30 | 3.42 | -4.98 | 4.07 | 1.43 |
Table 6
Fig. 4 A show chromatic curve on the axle of the iris lens of embodiment 2, and it represents the light of different wave length via rainbow
Converging focal point after film camera lens deviates.Fig. 4 B show the astigmatism curve of the iris lens of embodiment 2, and it represents that meridianal image surface is curved
The bending of bent and sagittal image surface.Fig. 4 C show the distortion curve of the iris lens of embodiment 2, and it is represented in the case of different visual angles
Distort sizes values.Fig. 4 D show the ratio chromatism, curve of the iris lens of embodiment 2, after it represents light via iris lens
The deviation of different image heights on imaging surface.Fig. 4 E show the relative illumination curve of the iris lens of embodiment 2, and it is represented
Relative illumination on imaging surface corresponding to different image heights.Understood according to Fig. 4 A to Fig. 4 E, the iris lens energy given by embodiment 2
Enough realize good image quality.
Embodiment 3
The iris lens according to the embodiment of the present application 3 are described referring to Fig. 5 to Fig. 6 E.
Fig. 5 shows the structural representation of the iris lens according to the embodiment of the present application 3.
As shown in figure 5, iris lens include from thing side to two lens L1 and L2 into image side sequential along optical axis.
First lens L1, there is thing side S1 and image side surface S2；And the second lens L2, there is thing side S3 and image side surface S4.It is optional
Ground, iris lens may also include the optical filter L3 with thing side S5 and image side surface S6.Optical filter L3 can be IR infrared fileters,
Its band logical wave band is about 785nm to about 835nm.In the iris lens of the present embodiment, can also thing side and the first lens L1 it
Between be provided for the aperture STO of confine optical beam, to improve image quality.Light from object sequentially passes through each surface S1 to S6 simultaneously
It is ultimately imaged on imaging surface S7.
Table 7 shows surface type, radius of curvature, thickness, material and the circular cone of each lens of iris lens in embodiment 3
Coefficient.Table 8 shows the high order term coefficient A available for each aspherical mirror in embodiment 34、A6、A8、A10、A12、A14And A16.Table
9 give total effective focal length f of the iris lens of embodiment 3, the first lens L1 effective focal length f1, the second lens L2 it is effective
Electronics photo-sensitive cell effective pixel region on focal length f2, the optics total length TTL of iris lens and iris lens imaging surface S7
The half ImgH of domain diagonal line length.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 7
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -4.7633E-02 | -1.5765E-01 | 9.3141E-01 | -4.1530E+00 | 9.2021E+00 | -1.0447E+01 | 4.5212E+00 |
| S2 | 6.1085E-01 | -2.3867E+00 | 9.6314E+00 | -2.8191E+01 | 5.7935E+01 | -7.1768E+01 | 4.0952E+01 |
| S3 | -1.5086E+00 | 2.0247E+00 | 1.7414E-01 | -4.1911E+01 | 1.6557E+02 | -2.9444E+02 | 1.9063E+02 |
| S4 | -4.4143E-01 | -1.6215E-01 | 2.5326E+00 | -9.6285E+00 | 1.8539E+01 | -1.8475E+01 | 7.5187E+00 |
Table 8
| Parameter | f(mm) | f1(mm) | f2(mm) | TTL(mm) | ImgH(mm) |
| Numerical value | 4.30 | 2.90 | -3.35 | 3.66 | 1.40 |
Table 9
Fig. 6 A show chromatic curve on the axle of the iris lens of embodiment 3, and it represents the light of different wave length via rainbow
Converging focal point after film camera lens deviates.Fig. 6 B show the astigmatism curve of the iris lens of embodiment 3, and it represents that meridianal image surface is curved
The bending of bent and sagittal image surface.Fig. 6 C show the distortion curve of the iris lens of embodiment 3, and it is represented in the case of different visual angles
Distort sizes values.Fig. 6 D show the ratio chromatism, curve of the iris lens of embodiment 3, after it represents light via iris lens
The deviation of different image heights on imaging surface.Fig. 6 E show the relative illumination curve of the iris lens of embodiment 3, and it is represented
Relative illumination on imaging surface corresponding to different image heights.Understood according to Fig. 6 A to Fig. 6 E, the iris lens energy given by embodiment 3
Enough realize good image quality.
Embodiment 4
The iris lens according to the embodiment of the present application 4 are described referring to Fig. 7 to Fig. 8 E.
Fig. 7 shows the structural representation of the iris lens according to the embodiment of the present application 4.
As shown in fig. 7, iris lens include from thing side to two lens L1 and L2 into image side sequential along optical axis.
First lens L1, there is thing side S1 and image side surface S2；And the second lens L2, there is thing side S3 and image side surface S4.It is optional
Ground, iris lens may also include the optical filter L3 with thing side S5 and image side surface S6.Optical filter L3 can be IR infrared fileters,
Its band logical wave band is about 785nm to about 835nm.In the iris lens of the present embodiment, can also thing side and the first lens L1 it
Between be provided for the aperture STO of confine optical beam, to improve image quality.Light from object sequentially passes through each surface S1 to S6 simultaneously
It is ultimately imaged on imaging surface S7.
Table 10 shows surface type, radius of curvature, thickness, material and the circle of each lens of iris lens in embodiment 4
Bore coefficient.Table 11 shows the high order term coefficient A available for each aspherical mirror in embodiment 44、A6、A8、A10、A12、A14With
A16.Table 12 gives total effective focal length f of the iris lens of embodiment 4, the first lens L1 effective focal length f1, the second lens L2
Effective focal length f2, the optics total length TTL of iris lens and the imaging surface S7 of iris lens on electronics photo-sensitive cell it is effective
The half ImgH of pixel region diagonal line length.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1
It is fixed.
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | It is infinite | 260.0000 | ||
| STO | Sphere | It is infinite | -0.3389 | ||
| S1 | It is aspherical | 0.9738 | 0.6113 | 1.537/56.11 | 0.2641 |
| S2 | It is aspherical | 1.6960 | 1.2992 | -99.0000 | |
| S3 | It is aspherical | 187.0863 | 0.3000 | 1.622/23.53 | 1.0000 |
| S4 | It is aspherical | 2.7991 | 0.2747 | -21.3055 | |
| S5 | Sphere | It is infinite | 0.2100 | 1.517/64.17 | |
| S6 | Sphere | It is infinite | 0.9857 | ||
| S7 | Sphere | It is infinite |
Table 10
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.2370E-02 | -4.5618E-01 | 2.8196E+00 | -9.8281E+00 | 1.9081E+01 | -1.9479E+01 | 8.1856E+00 |
| S2 | 2.2084E+00 | -1.8264E+01 | 1.2729E+02 | -5.7248E+02 | 1.5904E+03 | -2.4535E+03 | 1.6269E+03 |
| S3 | -4.9117E-01 | -2.3555E+00 | 1.9208E+01 | -9.0295E+01 | 2.3731E+02 | -3.3491E+02 | 1.9467E+02 |
| S4 | -4.1747E-01 | 4.1254E-02 | 9.9817E-01 | -4.0704E+00 | 7.8205E+00 | -7.7140E+00 | 3.1000E+00 |
Table 11
| Parameter | f(mm) | f1(mm) | f2(mm) | TTL(mm) | ImgH(mm) |
| Numerical value | 4.30 | 3.29 | -4.58 | 3.68 | 1.40 |
Table 12
Fig. 8 A show chromatic curve on the axle of the iris lens of embodiment 4, and it represents the light of different wave length via rainbow
Converging focal point after film camera lens deviates.Fig. 8 B show the astigmatism curve of the iris lens of embodiment 4, and it represents that meridianal image surface is curved
The bending of bent and sagittal image surface.Fig. 8 C show the distortion curve of the iris lens of embodiment 4, and it is represented in the case of different visual angles
Distort sizes values.Fig. 8 D show the ratio chromatism, curve of the iris lens of embodiment 4, after it represents light via iris lens
The deviation of different image heights on imaging surface.Fig. 8 E show the relative illumination curve of the iris lens of embodiment 4, and it is represented
Relative illumination on imaging surface corresponding to different image heights.Understood according to Fig. 8 A to Fig. 8 E, the iris lens energy given by embodiment 4
Enough realize good image quality.
Embodiment 5
The iris lens according to the embodiment of the present application 5 are described referring to Fig. 9 to Figure 10 E.
Fig. 9 shows the structural representation of the iris lens according to the embodiment of the present application 4.
As shown in figure 9, iris lens include from thing side to two lens L1 and L2 into image side sequential along optical axis.
First lens L1, there is thing side S1 and image side surface S2；And the second lens L2, there is thing side S3 and image side surface S4.It is optional
Ground, iris lens may also include the optical filter L3 with thing side S5 and image side surface S6.Optical filter L3 can be IR infrared fileters,
Its band logical wave band is about 785nm to about 835nm., can also be saturating in the first lens L1 and second in the iris lens of the present embodiment
The aperture STO of confine optical beam is provided between mirror L2, to improve image quality.Light from object sequentially passes through each surface S1
To S6 and it is ultimately imaged on imaging surface S7.
Table 13 shows surface type, radius of curvature, thickness, material and the circle of each lens of iris lens in embodiment 5
Bore coefficient.Table 14 shows the high order term coefficient A available for each aspherical mirror in embodiment 54、A6、A8、A10、A12、A14With
A16.Table 15 gives total effective focal length f of the iris lens of embodiment 5, the first lens L1 effective focal length f1, the second lens L2
Effective focal length f2, the optics total length TTL of iris lens and the imaging surface S7 of iris lens on electronics photo-sensitive cell it is effective
The half ImgH of pixel region diagonal line length.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1
It is fixed.
Table 13
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -2.2534E-02 | -3.8220E-02 | 1.0513E-01 | -2.5572E-01 | 2.6669E-01 | -1.2275E-01 | 0.0000E+00 |
| S2 | 5.2950E-02 | 2.1007E-01 | -8.5353E-01 | 3.3212E+00 | -5.9250E+00 | 4.7546E+00 | 0.0000E+00 |
| S3 | -3.8866E-01 | -3.1806E+00 | 2.6058E+01 | -1.2681E+02 | 3.4131E+02 | -4.8881E+02 | 2.8285E+02 |
| S4 | -3.5154E-01 | -1.3362E-01 | 1.4914E+00 | -4.9150E+00 | 8.1112E+00 | -6.9308E+00 | 2.4034E+00 |
Table 14
| Parameter | f(mm) | f1(mm) | f2(mm) | TTL(mm) | ImgH(mm) |
| Numerical value | 4.13 | 3.12 | -4.40 | 3.73 | 1.43 |
Table 15
Figure 10 A show chromatic curve on the axle of the iris lens of embodiment 5, and it represents the light of different wave length via rainbow
Converging focal point after film camera lens deviates.Figure 10 B show the astigmatism curve of the iris lens of embodiment 5, and it represents meridianal image surface
Bending and sagittal image surface bending.Figure 10 C show the distortion curve of the iris lens of embodiment 5, and it represents different visual angles situation
Under distortion sizes values.Figure 10 D show the ratio chromatism, curve of the iris lens of embodiment 5, and it represents light via iris
The deviation of different image heights after camera lens on imaging surface.Figure 10 E show that contrasting for the iris lens of embodiment 5 is write music
Line, it represents the relative illumination corresponding to different image heights on imaging surface.Understood according to Figure 10 A to Figure 10 E, given by embodiment 5
Iris lens can realize good image quality.
Embodiment 6
The iris lens according to the embodiment of the present application 6 are described referring to Figure 11 to Figure 12 E.Figure 11 is shown according to this
Apply for the structural representation of the iris lens of embodiment 4.
As shown in figure 11, iris lens include along optical axis from thing side to two lens L1 into image side sequential and
L2.First lens L1, there is thing side S1 and image side surface S2；And the second lens L2, there is thing side S3 and image side surface S4.Can
Selection of land, iris lens may also include the optical filter L3 with thing side S5 and image side surface S6.Optical filter L3 can be IR infrared filterings
Piece, its band logical wave band are about 785nm to about 835nm., can also be in the first lens L1 and second in the iris lens of the present embodiment
The aperture STO of confine optical beam is provided between lens L2, to improve image quality.Light from object sequentially passes through each surface
S1 to S6 is simultaneously ultimately imaged on imaging surface S7.
Table 16 shows surface type, radius of curvature, thickness, material and the circle of each lens of iris lens in embodiment 6
Bore coefficient.Table 17 shows the high order term coefficient A available for each aspherical mirror in embodiment 64、A6、A8、A10、A12、A14With
A16.Table 18 gives total effective focal length f of the iris lens of embodiment 6, the first lens L1 effective focal length f1, the second lens L2
Effective focal length f2, the optics total length TTL of iris lens and the imaging surface S7 of iris lens on electronics photo-sensitive cell it is effective
The half ImgH of pixel region diagonal line length.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1
It is fixed.
| Face number | Surface type | Radius of curvature | Thickness | Material | Circular cone coefficient |
| OBJ | Sphere | It is infinite | 260.0000 | ||
| S1 | It is aspherical | 1.0977 | 0.8187 | 1.537/56.11 | 0.1520 |
| S2 | It is aspherical | 2.2950 | 0.3290 | 0.9960 | |
| STO | Sphere | It is infinite | 0.8960 | ||
| S3 | It is aspherical | -3.0685 | 0.3580 | 1.622/23.53 | 0.4223 |
| S4 | It is aspherical | -123.0086 | 0.3765 | -3.1327 | |
| S5 | Sphere | It is infinite | 0.2100 | 1.517/64.17 | |
| S6 | Sphere | It is infinite | 0.7433 | ||
| S7 | Sphere | It is infinite |
Table 16
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -1.9164E-02 | -2.7257E-02 | 7.4036E-02 | -1.8945E-01 | 2.0138E-01 | -9.5530E-02 | 0.0000E+00 |
| S2 | 6.8147E-02 | 1.6641E-01 | -4.4392E-01 | 1.9723E+00 | -3.7066E+00 | 3.6909E+00 | 0.0000E+00 |
| S3 | -3.5832E-01 | -2.7831E+00 | 2.1916E+01 | -1.0353E+02 | 2.6915E+02 | -3.7250E+02 | 2.0669E+02 |
| S4 | -3.2472E-01 | -2.1106E-01 | 1.6033E+00 | -4.9099E+00 | 7.7491E+00 | -6.4143E+00 | 2.1613E+00 |
Table 17
| Parameter | f(mm) | f1(mm) | f2(mm) | TTL(mm) | ImgH(mm) |
| Numerical value | 4.06 | 3.16 | -5.07 | 3.73 | 1.43 |
Table 18
Figure 12 A show chromatic curve on the axle of the iris lens of embodiment 6, and it represents the light of different wave length via rainbow
Converging focal point after film camera lens deviates.Figure 12 B show the astigmatism curve of the iris lens of embodiment 6, and it represents meridianal image surface
Bending and sagittal image surface bending.Figure 12 C show the distortion curve of the iris lens of embodiment 6, and it represents different visual angles situation
Under distortion sizes values.Figure 12 D show the ratio chromatism, curve of the iris lens of embodiment 6, and it represents light via iris
The deviation of different image heights after camera lens on imaging surface.Figure 12 E show that contrasting for the iris lens of embodiment 6 is write music
Line, it represents the relative illumination corresponding to different image heights on imaging surface.Understood according to Figure 12 A to Figure 12 E, given by embodiment 6
Iris lens can realize good image quality.
To sum up, embodiment 1 to embodiment 6 meets the relation shown in table 19 below respectively.
| Conditional embodiment | 1 | 2 | 3 | 4 | 5 | 6 |
| T12/TTL | 0.43 | 0.39 | 0.37 | 0.35 | 0.35 | 0.33 |
| DT11/DT22 | 0.80 | 0.86 | 0.95 | 0.91 | 0.99 | 0.97 |
| ET1max/ET1min | 1.20 | 1.27 | 1.40 | 1.10 | 1.20 | 1.13 |
| CRAmax(°) | 24.14 | 24.31 | 27.92 | 28.84 | 29.03 | 28.93 |
| ET1/CT1 | 0.74 | 0.67 | 0.58 | 0.67 | 0.53 | 0.60 |
| TTL/(ImgH*f)(mm-1) | 0.67 | 0.66 | 0.61 | 0.61 | 0.63 | 0.64 |
| DT12/DT22 | 0.72 | 0.77 | 0.86 | 0.75 | 0.78 | 0.73 |
| DT22/ImgH | 0.79 | 0.76 | 0.56 | 0.58 | 0.65 | 0.64 |
| |R4/f| | 1.30 | 2.68 | 2.98 | 0.65 | 14.38 | 30.29 |
| R2/f1 | 1.25 | 1.09 | 0.91 | 0.52 | 0.81 | 0.73 |
Table 19
The application also provides a kind of camera device, and its photo-sensitive cell can be photosensitive coupling element (CCD) or complementary oxygen
Change metal semiconductor element (CMOS).Camera device can be the independent picture pick-up device of such as digital camera or integrate
Photographing module on the mobile electronic devices such as mobile phone.The camera device is equipped with iris lens described above.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from the inventive concept, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (24)
1. iris lens, the first lens and the second lens are sequentially included by thing side to image side along optical axis,
Characterized in that,
First lens have positive light coke, and its thing side is convex surface, and image side surface is concave surface；
Second lens have negative power,
The spacing distance T12 of first lens and second lens on the optical axis and first lens thing side
Extremely distance TTL of the imaging surface of the iris lens on the optical axis meets T12/TTL>0.32.
2. iris lens according to claim 1, it is characterised in that the effective radius of the thing side of first lens
DT11 and the image side surface of second lens effective radius DT22 meet 0.7<DT11/DT22<1.
3. iris lens according to claim 1, it is characterised in that first lens are in the side parallel to the optical axis
Minimum thickness ET1mins of the upward maximum gauge ET1max with first lens on the direction parallel to the optical axis expires
Foot 1<ET1max/ET1min<1.45.
4. iris lens according to claim 1, in addition to the sense electronicses being arranged on the imaging surface of the iris lens
Optical element, it is characterised in that
The maximum incident angle degree CRAmax of electronics photo-sensitive cell described in chief ray incident meets CRAmax<30°.
5. iris lens according to claim 1, it is characterised in that the edge thickness ET1 of first lens with it is described
First lens meet 0.5 in the center thickness CT1 on the optical axis<ET1/CT1<1.
6. iris lens according to claim 1, it is characterised in that the iris lens also include being arranged on described second
IR infrared fileters between the imaging surface of lens and the iris lens.
7. iris lens according to claim 6, it is characterised in that the band logical wave band of the IR infrared fileters is
785nm to 835nm.
8. iris lens according to claim 1, it is characterised in that 0.4mm-1<TTL/(ImgH*f)<0.7mm-1,
Wherein, TTL is the thing side of first lens to distance of the imaging surface on the optical axis of the iris lens；
ImgH is the half of electronics photo-sensitive cell effective pixel area diagonal line length on the imaging surface of the iris lens；
F is total effective focal length of the iris lens.
9. iris lens according to claim 1, it is characterised in that the effective radius of the image side surface of first lens
The effective radius DT22 of the image side surface of DT12 and second lens meets 0.7<DT12/DT22<1.
10. iris lens according to claim 1, it is characterised in that the effective radius of the image side surface of second lens
DT22 and electronics photo-sensitive cell effective pixel area diagonal line length on the imaging surface of the iris lens half ImgH meet 0.5
<DT22/ImgH<1。
11. iris lens according to any one of claim 1 to 10, it is characterised in that the iris lens also include
The aperture diaphragm being arranged between the thing side and first lens,
The radius of curvature R 4 of the image side surface of second lens meets with total effective focal length f of the iris lens | R4/f |<3.
12. iris lens according to any one of claim 1 to 10, it is characterised in that the iris lens also include
The aperture diaphragm being arranged between first lens and second lens,
The radius of curvature R 2 of the image side surface of first lens and the effective focal length f1 of first lens meet 0.5<R2/f1<
0.9。
13. iris lens, the first lens and the second lens are sequentially included by thing side to image side along optical axis,
Characterized in that,
First lens have positive light coke, and its thing side is convex surface, and image side surface is concave surface；
Second lens have negative power,
The effective radius DT11 of the thing side of first lens and the image side surface of second lens effective radius DT22 expire
Foot 0.7<DT11/DT22<1.
14. iris lens according to claim 13, it is characterised in that first lens are parallel to the optical axis
Maximum gauge ET1max and minimum thickness ET1min of first lens on the direction parallel to the optical axis on direction
Meet 1<ET1max/ET1min<1.45.
15. the iris lens according to claim 13 or 14, it is characterised in that the image side surface of first lens it is effective
The effective radius DT22 of the image side surface of radius DT12 and second lens meets 0.7<DT12/DT22<1.
16. the iris lens according to claim 13 or 14, it is characterised in that the image side surface of second lens it is effective
Radius DT22 and electronics photo-sensitive cell effective pixel area diagonal line length on the imaging surface of the iris lens half ImgH expire
Foot 0.5<DT22/ImgH<1.
17. the iris lens according to claim 13 or 14, it is characterised in that first lens and second lens
The thing side of spacing distance T12 on the optical axis and first lens to the iris lens imaging surface in the light
Distance TTL on axle meets T12/TTL>0.32.
18. the iris lens according to claim 13 or 14, it is characterised in that the edge thickness ET1 of first lens
Meet 0.5 in the center thickness CT1 on the optical axis with first lens<ET1/CT1<1.
19. the iris lens according to claim 13 or 14, in addition to be arranged on the imaging surface of the iris lens
Electronics photo-sensitive cell, it is characterised in that the maximum incident angle degree CRAmax of electronics photo-sensitive cell described in chief ray incident meets
CRAmax<30°。
20. the iris lens according to claim 13 or 14, it is characterised in that the iris lens also include being arranged on institute
State the IR infrared fileters between the imaging surface of the second lens and the iris lens.
21. iris lens according to claim 20, it is characterised in that the band logical wave band of the IR infrared fileters is
785nm to 835nm.
22. the iris lens according to claim 13 or 14, it is characterised in that 0.4mm-1<TTL/(ImgH*f)<0.7mm-1,
Wherein, TTL is the thing side of first lens to distance of the imaging surface on the optical axis of the iris lens；
ImgH is the half of electronics photo-sensitive cell effective pixel area diagonal line length on the imaging surface of the iris lens；
F is total effective focal length of the iris lens.
23. the iris lens according to claim 13 or 14, it is characterised in that the iris lens also include being arranged on institute
The aperture diaphragm between thing side and first lens is stated,
The radius of curvature R 4 of the image side surface of second lens meets with total effective focal length f of the iris lens | R4/f |<3.
24. the iris lens according to claim 13 or 14, it is characterised in that the iris lens also include being arranged on institute
The aperture diaphragm between the first lens and second lens is stated,
The radius of curvature R 2 of the image side surface of first lens and the effective focal length f1 of first lens meet 0.5<R2/f1<
0.9。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720545624.0U CN206757162U (en) | 2017-05-17 | 2017-05-17 | Iris lens |
| PCT/CN2017/107328 WO2018209891A1 (en) | 2017-05-17 | 2017-10-23 | Iris camera lens |
| US15/780,111 US20210173178A1 (en) | 2017-05-17 | 2017-10-23 | Iris lens assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720545624.0U CN206757162U (en) | 2017-05-17 | 2017-05-17 | Iris lens |
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| CN206757162U true CN206757162U (en) | 2017-12-15 |
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ID=60618596
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932886A (en) * | 2017-05-17 | 2017-07-07 | 浙江舜宇光学有限公司 | Iris lens |
| CN112130295A (en) * | 2020-11-02 | 2020-12-25 | 中山市众盈光学有限公司 | Small-caliber infrared identification lens |
-
2017
- 2017-05-17 CN CN201720545624.0U patent/CN206757162U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932886A (en) * | 2017-05-17 | 2017-07-07 | 浙江舜宇光学有限公司 | Iris lens |
| CN112130295A (en) * | 2020-11-02 | 2020-12-25 | 中山市众盈光学有限公司 | Small-caliber infrared identification lens |
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