CN208752295U - Optical image microscope group - Google Patents
Optical image microscope group Download PDFInfo
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- CN208752295U CN208752295U CN201821448594.2U CN201821448594U CN208752295U CN 208752295 U CN208752295 U CN 208752295U CN 201821448594 U CN201821448594 U CN 201821448594U CN 208752295 U CN208752295 U CN 208752295U
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Abstract
This application discloses a kind of optical image microscope groups, the optical image microscope group sequentially includes first lens and at least one subsequent lens with focal power by object side to image side along optical axis, and the distance P on optical axis meets 0.6 < of < TTL/P × 10 1.8 to distance TTL of the imaging surface of the object side of the first lens to optical image microscope group on optical axis with the object side of object to the first lens.
Description
Technical field
This application involves a kind of optical image microscope groups, more particularly, to a kind of optics shadow including at least two panels lens
As microscope group.
Background technique
With the continuous development of science and technology, mobile phone recognition technology is from initial numerical ciphers, pattern recognition techniques, gradually
It is changed into fingerprint recognition, iris recognition and 3D facial recognition techniques.Palmprint recognition technology be propose in recent years it is a kind of newer
Biometrics identification technology, it is subsequent to be also most probably applied in mobile phone recognition technology.Correspondingly, to matching used optical image
Microscope group is just put forward higher requirements, such as optical image microscope group is needed to have miniaturization, big visual angle, in certain image-forming range
With characteristics such as high imaging qualities.
Utility model content
This application provides be applicable to portable electronic product, can at least solve or part solve it is in the prior art
The optical image microscope group of at least one above-mentioned disadvantage.
The one aspect of the application provides such a optical image microscope group, and the optical image microscope group is along optical axis by object
Side to image side sequentially includes first lens and at least one subsequent lens with focal power.The object side of first lens is to optics
Distance P can on optical axis with the object side of object to the first lens by distance TTL of the imaging surface of image microscope group on optical axis
Meet 0.6 < of < TTL/P × 10 1.8.
In one embodiment, in the first lens and at least one subsequent lens, near optical image microscope group
The object side of the lens of imaging surface can be convex surface.
In one embodiment, in the first lens and at least one subsequent lens, near optical image microscope group
The object side of the radius of curvature R LS2 of the image side surface of the lens of imaging surface and the lens of the imaging surface near optical image microscope group
Radius of curvature R LS1 can meet | RLS2/RLS1 |≤2.0.
In one embodiment, the effective focal length f1 of the total effective focal length f and the first lens of optical image microscope group can expire
0.1 < of foot | f/f1 | < 1.3.
In one embodiment, the curvature of the object side of total effective focal length f and the first lens of optical image microscope group half
Diameter R1 can meet | f/R1 |≤2.6.
In one embodiment, the object side of effective half bore DT12 and the first lens of the image side surface of the first lens
Effective half bore DT11 can meet 0.3 < DT12/DT11 < 1.6.
In one embodiment, at least one subsequent lens may include the second lens, and the object side of the second lens can be
Convex surface.
In one embodiment, at least one subsequent lens may include along optical axis by object side to image side sequential
Two lens, the third lens and the 4th lens, the object side of the 4th lens can be convex surface.
In one embodiment, the Entry pupil diameters EPD of total effective focal length f of optical image microscope group and optical image microscope group
F/EPD≤3.0 can be met.
In one embodiment, the first lens and at least one subsequent lens are respectively at the sum of the center thickness on optical axis
The imaging surface of ∑ CT and the object side of the first lens to optical image microscope group distance TTL on optical axis can meet 0.2 < ∑ CT/
TTL < 0.7.
In one embodiment, the maximum angle of half field-of view HFOV of optical image microscope group can meet 33 ° of 103 ° of < HFOV <.
The application uses at least two panels Lens, passes through each power of lens of reasonable distribution, face type, each lens
Spacing etc. on axis between center thickness and each lens, so that above-mentioned optical image microscope group has miniaturization, good processing
At least one beneficial effect such as craftsmanship, high image quality, and when object distance has preferably in the range of 20mm to 80mm
Imaging performance.
Detailed description of the invention
In conjunction with attached drawing, by the detailed description of following non-limiting embodiment, other features of the application, purpose and excellent
Point will be apparent.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 1；
Fig. 2A to Fig. 2 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 1, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 3 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 2；
Fig. 4 A to Fig. 4 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 2, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 5 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 3；
Fig. 6 A to Fig. 6 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 3, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 7 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 4；
Fig. 8 A to Fig. 8 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 4, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 9 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 5；
Figure 10 A to Figure 10 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 5, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 11 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 6；
Figure 12 A to Figure 12 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 6, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 13 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 7；
Figure 14 A to Figure 14 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 7, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve.
Specific embodiment
Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers
Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way
Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute
Any and all combinations of one or more of list of items.
It should be noted that in the present specification, first, second, third, etc. statement is only used for a feature and another spy
Sign distinguishes, without indicating any restrictions to feature.Therefore, without departing substantially from teachings of the present application, hereinafter
The first lens discussed are also known as the second lens or the third lens.
In the accompanying drawings, for ease of description, thickness, the size and shape of lens are slightly exaggerated.Specifically, attached drawing
Shown in spherical surface or aspherical shape be illustrated by way of example.That is, spherical surface or aspherical shape are not limited to attached drawing
Shown in spherical surface or aspherical shape.Attached drawing is merely illustrative and and non-critical drawn to scale.
Herein, near axis area refers to the region near optical axis；Distal shaft region refers to the region of optical axis other than around, i.e.,
Leave the region of optical axis.If lens surface is convex surface and does not define the convex surface position, then it represents that the lens surface is close to being less than
Axis region is convex surface；If lens surface is concave surface and does not define the concave surface position, then it represents that the lens surface is paraxial to being less than
Region is concave surface.Each lens are known as the object side of the lens near the surface of subject, and each lens are near imaging
The surface in face is known as the image side surface of the lens.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
It indicates there is stated feature, element and/or component when using in bright book, but does not preclude the presence or addition of one or more
Other features, component, assembly unit and/or their combination.In addition, ought the statement of such as at least one of " ... " appear in institute
When after the list of column feature, entire listed feature is modified, rather than modifies the individual component in list.In addition, when describing this
When the embodiment of application, " one or more embodiments of the application " are indicated using "available".Also, term " illustrative "
It is intended to refer to example or illustration.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with
The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words
Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and
It will not be explained with idealization or excessively formal sense, unless clear herein so limit.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described 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.
According to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side sequentially include tool
There are the first lens and at least one subsequent lens of focal power.Optionally, near the lens of imaging surface, object side can be convex
Face.It will be convex surface near the object side arrangement of the lens of imaging surface, incident light can further be restrained, it is reasonable to control
Light tendency processed.On the one hand, can be excessive to avoid face inclination angle, help to reduce the risk for forming ghost image and helps to improve microscope group
Processing and forming technology；On the other hand, comprehensive correction effect can be played to the astigmatism of system.
In the exemplary embodiment, the optical image microscope group of the application may include the lens that two panels has focal power,
That is, the first lens and the second lens, this two panels lens is along optical axis by object side to image side sequential.Wherein, second lens
Object side can be convex surface.
In the exemplary embodiment, the optical image microscope group of the application may include the lens that three pieces have focal power,
That is, the first lens, the second lens and the third lens, this three pieces lens is along optical axis by object side to image side sequential.Wherein,
The object side of three lens can be convex surface.
In the exemplary embodiment, the optical image microscope group of the application may include four lens with focal power,
That is, the first lens, the second lens, the third lens and the 4th lens, this four lens are sequentially arranged along optical axis by object side to image side
Column.Wherein, the object side of the 4th lens can be convex surface.
In the exemplary embodiment, the optical image microscope group of the application may include five lens with focal power,
That is, the first lens, the second lens, the third lens, the 4th lens and the 5th lens, this five lens are along optical axis by object side to picture
Side sequential.Wherein, the object side of the 5th lens can be convex surface.
In the exemplary embodiment, the optical image microscope group of the application may include six lens with focal power,
That is, the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, this six-element lens is along optical axis
By object side to image side sequential.Wherein, the object side of the 6th lens can be convex surface.
In the exemplary embodiment, the optical image microscope group of the application may include seven lens with focal power,
That is, the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens, this seven lens
Along optical axis by object side to image side sequential.Wherein, the object side of the 7th lens can be convex surface.
In the exemplary embodiment, the optical image microscope group of the application can meet 0.6 < of < TTL/P × 10 of conditional
1.8, wherein TTL is the object side of the first lens to distance of the imaging surface on optical axis of optical image microscope group, and P is object
To distance of the object side of the first lens on optical axis.More specifically, TTL and P can further meet 0.74≤TTL/P × 10≤
1.51.By the Ratio control of TTL and P in reasonable range, be conducive to when object is apart from microscope group 20mm-80mm,
Microscope group can have good resolving power.As TTL/P × 10 < 0.6, microscope group optimal imaging distance farther out, leads to practical identification
Image quality declines in distance range.As TTL/P × 10 > 1.8, it is meant that ttl value is bigger or P value is smaller, and ttl value is got over
More it is unfavorable for the miniaturization of camera lens greatly, and the reduction meeting of P value is so that resolving power declines.20mm < P < 80mm can be covered big absolutely
The operating habit of most users.
In the exemplary embodiment, the optical image microscope group of the application can meet conditional | RLS2/RLS1 |≤2.0,
Wherein, RLS2 is near the radius of curvature of the image side surface of the lens of imaging surface in optical image microscope group, and RLS1 is optical image
Near the radius of curvature of the object side of the lens of imaging surface in microscope group.More specifically, RLS2 and RLS1 can further meet
0.04≤|RLS2/RLS1|≤1.99.The radius of curvature for rationally controlling last piece of lens is conducive to improve light at last
Tendency at piece lens, avoids deflection of light excessive, so that the sensibility of microscope group is effectively reduced, and being capable of active balance optics
The astigmatism and coma of system promote imaging performance.
In the exemplary embodiment, the optical image microscope group of the application can meet conditional f/EPD≤3.0, wherein f
For total effective focal length of optical image microscope group, EPD is the Entry pupil diameters of optical image microscope group.More specifically, f and EPD are further
1.48≤f/EPD≤2.97 can be met.Meet conditional f/EPD≤3.0, help to obtain larger light-inletting quantity, guarantee identified
There is good imaging illumination in journey, promotes recognition accuracy.If f and EPD ratio is excessive, in fact it could happen that imaging light energy is weaker
Situation causes recognition accuracy to decline.
In the exemplary embodiment, the optical image microscope group of the application can meet 0.1 < of conditional | f/f1 | < 1.3,
Wherein, f is total effective focal length of optical image microscope group, and f1 is the effective focal length of the first lens.More specifically, f and f1 are further
It can meet 0.13≤| f/f1 |≤1.13.The first power of lens of reasonable distribution slows down light in the deflection angle of the first lens
Degree reduces sensibility.Meanwhile being conducive to avoid face degree of tilt excessive, to guarantee the good craftsmanship of the first lens.
In the exemplary embodiment, the optical image microscope group of the application can meet conditional | f/R1 |≤2.6, wherein f
For total effective focal length of optical image microscope group, R1 is the radius of curvature of the object side of the first lens.More specifically, f and R1 is into one
Step can meet 0.02≤| f/R1 |≤2.34.Rationally the radius of curvature of the first lens object side of control is conducive to correct spherical aberration, drop
The visual field sensibility of low central area.When the ratio of f and R1 is excessive, then the first lens object side is to incident ray degree of convergence
Decline, causes image quality to reduce.
In the exemplary embodiment, the optical image microscope group of the application can meet 0.3 < DT12/DT11 < of conditional
1.6, wherein DT12 is effective half bore of the image side surface of the first lens, and DT11 is effective half mouthful of the object side of the first lens
Diameter.More specifically, DT12 and DT11 can further meet 0.33≤DT12/DT11≤1.25.Rationally the first lens object side of control
On the one hand ratio between face and effective half bore of image side surface is conducive to reduce microscope group front end size, so that entire microscope group is more
Add frivolous；On the other hand be conducive to rationally limit incident ray range, reject the poor light of edge quality, reduce off-axis aberration,
Effectively promote the resolving power of microscope group.
In the exemplary embodiment, the optical image microscope group of the application can meet 0.2 < ∑ CT/TTL < of conditional
0.7, wherein ∑ CT is all lens with focal power the sum of center thickness on optical axis respectively, and TTL is the first lens
Object side to optical image microscope group distance of the imaging surface on optical axis.More specifically, ∑ CT and TTL can further meet 0.43
≤∑CT/TTL≤0.58.Rationally control each lens center thickness be conducive to reduce microscope group aberration value, while it is advantageously ensured that
The craftsmanship of molding and assembling is avoided being unable to control due to eyeglass is excessively thin and occurs molding, assembles and be easily deformed, or due to mirror
Molding rear lens stress, the face type etc. that piece is blocked up and occurs are unable to ensure, after assembling when stress release camera lens be easy to appear it is various
Imeliness problem.
In the exemplary embodiment, the optical image microscope group of the application can meet 33 ° of 103 ° of < HFOV < of conditional,
In, HFOV is the maximum angle of half field-of view of optical image microscope group.More specifically, HFOV can further meet 35.8 °≤HFOV≤
102.1°.The rationally range of control field of view angle, advantageously ensures that in the case where certain object distance, the identification range of entire camera lens
It substantially can include the palmmprint size of all groups.When 30 ° of HFOV <, it is less than normal to will lead to identification range, can in part population operation
Can occur identifying problem.And work as 103 ° of HFOV >, microscope group half field-of-view angle itself has reached ultra-wide angle, further mentions
It is higher to optical system requirement to rise field angle, cost is substantially increased, and such big field angle is not needed in practice, can be made
At waste.
In the exemplary embodiment, the optical image microscope group of the application may also include diaphragm, with further promotion imaging
Quality.Any position between object side and image side can be set as needed in diaphragm.
Optionally, above-mentioned optical image microscope group may also include optical filter for correcting color error ratio and/or for protecting
The protection glass of photosensitive element on imaging surface.
Multi-disc eyeglass, such as described below two can be used according to the optical image microscope group of the above embodiment of the application
To seven lens.By each power of lens of reasonable distribution, face type, each lens center thickness and each lens between axis
Upper spacing etc., the volume that can effectively reduce microscope group, the machinability for reducing the susceptibility of microscope group and improving microscope group, so that optics
Image microscope group, which is more advantageous to, to be produced and processed and is applicable to portable electronic product.In addition, optics shadow through the above configuration
Picture microscope group has big field angle, can be applied to hand personal recognition field, and can be in object away from the first lens object side
Preferable imaging performance is kept in 20mm to 80mm distance range.
In presently filed embodiment, the mirror surface of each lens is mostly aspherical mirror.The characteristics of non-spherical lens, is: from
To lens perimeter, curvature is consecutive variations for lens centre.With the spherical surface from lens centre to lens perimeter with constant curvature
Lens are different, and non-spherical lens has more preferably radius of curvature characteristic, and there is improvement to distort aberration and improve the excellent of astigmatic image error
Point.After non-spherical lens, 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 solution the case where
Under, the lens numbers for constituting pick-up lens can be changed, to obtain each result and advantage described in this specification, institute as follows
Two to seven lens stated, but the application is without being limited thereto.If desired, the pick-up lens may also include the lens of other quantity.
The specific embodiment for being applicable to the optical image microscope group of above embodiment is further described with reference to the accompanying drawings.
Embodiment 1
Referring to Fig. 1 to Fig. 2 D description according to the optical image microscope group of the embodiment of the present application 1.Fig. 1 is shown according to this
Apply for the structural schematic diagram of the optical image microscope group of embodiment 1.
As shown in Figure 1, according to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side according to
Sequence includes: the first lens E1, diaphragm STO, the second lens E2, optical filter E3 and imaging surface S7.
First lens E1 has negative power, and object side S1 is concave surface, and image side surface S2 is convex surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.Optical filter E3 has object side S5 and image side surface S6.It comes from
The light of object sequentially passes through each surface S1 to S6 and is ultimately imaged on imaging surface S7.
Table 1 show the surface types of each lens of the optical image microscope group of embodiment 1, radius of curvature, thickness, material and
Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 1
As shown in Table 1, the object side S3 and picture of the object side S1 and image side surface S2 of the first lens E1 and the second lens E2
Side S4 is aspherical.In the present embodiment, the face type x of each non-spherical lens is available but is not limited to following aspherical formula
It is defined:
Wherein, x be it is aspherical along optical axis direction when being highly the position of h, away from aspheric vertex of surface apart from rise；C is
Aspherical paraxial curvature, c=1/R (that is, inverse that paraxial curvature c is upper 1 mean curvature radius R of table)；K be circular cone coefficient (
It has been provided in table 1)；Ai is the correction factor of aspherical i-th-th rank.The following table 2 give can be used for it is each aspherical in embodiment 1
The high-order coefficient A of mirror surface S1-S44、A6、A8、A10、A12、A14、A16、A18And A20。
Table 2
Table 3 gives the effective focal length f1 and f2 of each lens in embodiment 1, total effective focal length f of optical image microscope group,
Distance TTL, maximum angle of half field-of view HFOV and total effective focal length f of the object side S1 to imaging surface S7 of one lens E1 on optical axis
With the ratio f/EPD of Entry pupil diameters EPD.
| f1(mm) | -3.30 | TTL(mm) | 2.19 |
| f2(mm) | 0.58 | HFOV(°) | 50.5 |
| f(mm) | 0.42 | f/EPD | 2.97 |
Table 3
Optical image microscope group in embodiment 1 meets:
TTL/P × 10=1.10, wherein TTL be the first lens E1 object side S1 to imaging surface S7 on optical axis away from
From, P be object to the first lens E1 distance of the object side S1 on optical axis；
| RLS2/RLS1 |=1.76, wherein RLS2 be near imaging surface lens image side surface radius of curvature (
RLS2 is the radius of curvature of the image side surface S4 of the second lens E2 in the present embodiment), RLS1 is the lens near imaging surface
The radius of curvature (radius of curvature that RLS1 is the object side S3 of the second lens E2 in the present embodiment) of object side；
| f/f1 |=0.13, wherein f is total effective focal length of optical image microscope group, and f1 is effective coke of the first lens E1
Away from；
| f/R1 |=0.55, wherein f is total effective focal length of optical image microscope group, and R1 is the object side of the first lens E1
The radius of curvature of S1；
DT12/DT11=0.33, wherein DT12 is effective half bore of the image side surface S2 of the first lens E1, DT11 the
Effective half bore of the object side S1 of one lens E1；
∑ CT/TTL=0.51, wherein ∑ CT is all lens with focal power center thickness on optical axis respectively
The sum of, TTL is distance of the object side S1 of the first lens E1 to imaging surface S7 on optical axis.
Fig. 2A shows chromatic curve on the axis of the optical image microscope group of embodiment 1, indicates the light warp of different wave length
Deviateed by the converging focal point after microscope group.Fig. 2 B shows the astigmatism curve of the optical image microscope group of embodiment 1, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 2 C shows the distortion curve of the optical image microscope group of embodiment 1, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 2 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 1, indicates light warp
By the deviation of the different image heights after microscope group on imaging surface.A to Fig. 2 D is it is found that optics shadow given by embodiment 1 according to fig. 2
As microscope group can be realized good image quality.
Embodiment 2
Referring to Fig. 3 to Fig. 4 D description according to the optical image microscope group of the embodiment of the present application 2.In the present embodiment and following
In embodiment, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application 2
Optical image microscope group structural schematic diagram.
As shown in figure 3, according to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side according to
Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, optical filter E4 and imaging surface S9.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has
Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are concave surface.Optical filter E4 has object side S7 and image side surface S8.Light from object sequentially passes through each surface
S1 to S8 is simultaneously ultimately imaged on imaging surface S9.
Table 4 show the surface types of each lens of the optical image microscope group of embodiment 2, radius of curvature, thickness, material and
Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 4
As shown in Table 4, in example 2, the object side of the object side S1 and image side surface S2 of the first lens E1, the second lens E2
The object side S5 and image side surface S6 of face S3 and image side surface S4 and the third lens E3 is aspherical.Table 5, which is shown, can be used for reality
Apply the high-order coefficient of each aspherical mirror in example 2, wherein each aspherical face type can be by the formula that provides in above-described embodiment 1
(1) it limits.
Table 5
Table 6 gives the effective focal length f1 to f3 of each lens in embodiment 2, total effective focal length f of optical image microscope group,
Distance TTL, maximum angle of half field-of view HFOV and total effective focal length f of the object side S1 to imaging surface S9 of one lens E1 on optical axis
With the ratio f/EPD of Entry pupil diameters EPD.
| f1(mm) | 1.47 | TTL(mm) | 2.59 |
| f2(mm) | -44.44 | HFOV(°) | 35.8 |
| f3(mm) | 254.97 | f/EPD | 2.25 |
| f(mm) | 1.65 |
Table 6
Fig. 4 A shows chromatic curve on the axis of the optical image microscope group of embodiment 2, indicates the light warp of different wave length
Deviateed by the converging focal point after microscope group.Fig. 4 B shows the astigmatism curve of the optical image microscope group of embodiment 2, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 4 C shows the distortion curve of the optical image microscope group of embodiment 2, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 4 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 2, indicates light warp
By the deviation of the different image heights after microscope group on imaging surface.According to Fig. 4 A to Fig. 4 D it is found that optics shadow given by embodiment 2
As microscope group can be realized good image quality.
Embodiment 3
The optical image microscope group according to the embodiment of the present application 3 is described referring to Fig. 5 to Fig. 6 D.Fig. 5 shows basis
The structural schematic diagram of the optical image microscope group of the embodiment of the present application 3.
As shown in figure 5, according to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side according to
Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface
S11。
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is convex surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Concave surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.Filter
Mating plate E5 has object side S9 and image side surface S10.Light from object sequentially pass through each surface S1 to S10 and be ultimately imaged at
On image planes S11.
Table 7 show the surface types of each lens of the optical image microscope group of embodiment 3, radius of curvature, thickness, material and
Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 7
As shown in Table 7, in embodiment 3, the object side of the object side S1 and image side surface S2 of the first lens E1, the second lens E2
The object side S7 and image side surface of face S3 and image side surface S4, the object side S5 of the third lens E3 and image side surface S6 and the 4th lens E4
S8 is aspherical.Table 8 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each aspherical face
Type can be limited by the formula (1) provided in above-described embodiment 1.
Table 8
Table 9 gives the effective focal length f1 to f4 of each lens in embodiment 3, total effective focal length f of optical image microscope group,
Distance TTL, maximum angle of half field-of view HFOV and total effective focal length of the object side S1 to imaging surface S11 of one lens E1 on optical axis
The ratio f/EPD of f and Entry pupil diameters EPD.
| f1(mm) | 1.75 | f(mm) | 1.92 |
| f2(mm) | -3.07 | TTL(mm) | 2.94 |
| f3(mm) | 1.69 | HFOV(°) | 43.0 |
| f4(mm) | -2.52 | f/EPD | 2.11 |
Table 9
Fig. 6 A shows chromatic curve on the axis of the optical image microscope group of embodiment 3, indicates the light warp of different wave length
Deviateed by the converging focal point after microscope group.Fig. 6 B shows the astigmatism curve of the optical image microscope group of embodiment 3, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 6 C shows the distortion curve of the optical image microscope group of embodiment 3, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 6 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 3, indicates light warp
By the deviation of the different image heights after microscope group on imaging surface.According to Fig. 6 A to Fig. 6 D it is found that optics shadow given by embodiment 3
As microscope group can be realized good image quality.
Embodiment 4
The optical image microscope group according to the embodiment of the present application 4 is described referring to Fig. 7 to Fig. 8 D.Fig. 7 shows basis
The structural schematic diagram of the optical image microscope group of the embodiment of the present application 4.
As shown in fig. 7, according to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side according to
Sequence includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter
E6 and imaging surface S13.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is convex surface, and image side surface S8 is convex surface.The
Five lens E5 have negative power, and object side S9 is convex surface, and image side surface S10 is concave surface.Optical filter E6 have object side S11 and
Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
Table 10 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 4
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 10
As shown in Table 10, in example 4, the object of the object side S1 and image side surface S2 of the first lens E1, the second lens E2
The object side S7 and image side surface of side S3 and image side surface S4, the object side S5 of the third lens E3 and image side surface S6, the 4th lens E4
The object side S9 and image side surface S10 of S8 and the 5th lens E5 is aspherical.Table 11 show can be used for it is each non-in embodiment 4
The high-order coefficient of spherical mirror surface, wherein each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 11
Table 12 give the effective focal length f1 to f5 of each lens in embodiment 4, optical image microscope group total effective focal length f,
Distance TTL, maximum angle of half field-of view HFOV and total effectively coke of the object side S1 to imaging surface S13 of first lens E1 on optical axis
Ratio f/EPD away from f Yu Entry pupil diameters EPD.
| f1(mm) | 3.00 | f(mm) | 3.30 |
| f2(mm) | -6.20 | TTL(mm) | 4.52 |
| f3(mm) | 16.09 | HFOV(°) | 40.2 |
| f4(mm) | 2.32 | f/EPD | 2.16 |
| f5(mm) | -1.78 |
Table 12
Fig. 8 A shows chromatic curve on the axis of the optical image microscope group of embodiment 4, indicates the light warp of different wave length
Deviateed by the converging focal point after microscope group.Fig. 8 B shows the astigmatism curve of the optical image microscope group of embodiment 4, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 8 C shows the distortion curve of the optical image microscope group of embodiment 4, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 8 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 4, indicates light warp
By the deviation of the different image heights after microscope group on imaging surface.According to Fig. 8 A to Fig. 8 D it is found that optics shadow given by embodiment 4
As microscope group can be realized good image quality.
Embodiment 5
The optical image microscope group according to the embodiment of the present application 5 is described referring to Fig. 9 to Figure 10 D.Fig. 9 shows basis
The structural schematic diagram of the optical image microscope group of the embodiment of the present application 5.
As shown in figure 9, according to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side according to
Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly
Mirror E6, optical filter E7 and imaging surface S15.
First lens E1 has negative power, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is concave surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke,
Its object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.
Table 13 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 5
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 13
As shown in Table 13, in embodiment 5, the object of the object side S1 and image side surface S2 of the first lens E1, the second lens E2
The object side S7 and image side surface of side S3 and image side surface S4, the object side S5 of the third lens E3 and image side surface S6, the 4th lens E4
The object side S11 and image side surface S12 of S8, the object side S9 of the 5th lens E5 and image side surface S10 and the 6th lens E6 are non-
Spherical surface.Table 14 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each aspherical face type can be by
The formula (1) provided in above-described embodiment 1 limits.
Table 14
Table 15 give the effective focal length f1 to f6 of each lens in embodiment 5, optical image microscope group total effective focal length f,
Distance TTL, maximum angle of half field-of view HFOV and total effectively coke of the object side S1 to imaging surface S15 of first lens E1 on optical axis
Ratio f/EPD away from f Yu Entry pupil diameters EPD.
Table 15
Figure 10 A shows chromatic curve on the axis of the optical image microscope group of embodiment 5, indicates the light warp of different wave length
Deviateed by the converging focal point after microscope group.Figure 10 B shows the astigmatism curve of the optical image microscope group of embodiment 5, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 10 C shows the distortion curve of the optical image microscope group of embodiment 5, indicates different
The corresponding distortion sizes values of field angle.Figure 10 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 5, indicates
Light via the different image heights after microscope group on imaging surface deviation.According to Figure 10 A to Figure 10 D it is found that given by embodiment 5
Optical image microscope group can be realized good image quality.
Embodiment 6
The optical image microscope group according to the embodiment of the present application 6 is described referring to Figure 11 to Figure 12 D.Figure 11 shows root
According to the structural schematic diagram of the optical image microscope group of the embodiment of the present application 6.
As shown in figure 11, according to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side according to
Sequence includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th
Lens E7, optical filter E8 and imaging surface S17.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.The
Five lens E5 have positive light coke, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke,
Its object side S11 is convex surface, and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is convex surface, as
Side S14 is concave surface.Optical filter E8 has object side S15 and image side surface S16.Light from object sequentially passes through each surface S1 extremely
S16 is simultaneously ultimately imaged on imaging surface S17.
Table 16 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 6
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 16
As shown in Table 16, in embodiment 6, the object of the object side S1 and image side surface S2 of the first lens E1, the second lens E2
The object side S7 and image side surface of side S3 and image side surface S4, the object side S5 of the third lens E3 and image side surface S6, the 4th lens E4
S8, the object side S9 of the 5th lens E5 and image side surface S10, the object side S11 of the 6th lens E6 and image side surface S12 and the 7th are saturating
The object side S13 and image side surface S14 of mirror E7 is aspherical.Table 17, which is shown, can be used for each aspherical mirror in embodiment 6
High-order coefficient, wherein each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 17
Table 18 give the effective focal length f1 to f7 of each lens in embodiment 6, optical image microscope group total effective focal length f,
Distance TTL, maximum angle of half field-of view HFOV and total effectively coke of the object side S1 to imaging surface S17 of first lens E1 on optical axis
Ratio f/EPD away from f Yu Entry pupil diameters EPD.
| f1(mm) | 4.67 | f7(mm) | -3.65 |
| f2(mm) | -7.85 | f(mm) | 4.13 |
| f3(mm) | 5.96 | TTL(mm) | 5.36 |
| f4(mm) | -26.15 | HFOV(°) | 36.8 |
| f5(mm) | 62.70 | f/EPD | 1.48 |
| f6(mm) | 8.36 |
Table 18
Figure 12 A shows chromatic curve on the axis of the optical image microscope group of embodiment 6, indicates the light warp of different wave length
Deviateed by the converging focal point after microscope group.Figure 12 B shows the astigmatism curve of the optical image microscope group of embodiment 6, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 12 C shows the distortion curve of the optical image microscope group of embodiment 6, indicates different
The corresponding distortion sizes values of field angle.Figure 12 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 6, indicates
Light via the different image heights after microscope group on imaging surface deviation.According to Figure 12 A to Figure 12 D it is found that given by embodiment 6
Optical image microscope group can be realized good image quality.
Embodiment 7
The optical image microscope group according to the embodiment of the present application 7 is described referring to Figure 13 to Figure 14 D.Figure 13 shows root
According to the structural schematic diagram of the optical image microscope group of the embodiment of the present application 7.
As shown in figure 13, according to the optical image microscope group of the application illustrative embodiments along optical axis by object side to image side according to
Sequence includes: the first lens E1, the second lens E2, the third lens E3, diaphragm STO, the 4th lens E4, the 5th lens E5, optical filter
E6 and imaging surface S13.
First lens E1 has negative power, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is convex surface, and image side surface S8 is convex surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.Optical filter E6 have object side S11 and
Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.
Table 19 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 7
And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).
Table 19
As shown in Table 19, in embodiment 7, the object side S1 and image side surface S2 of the first lens E1 and the 4th lens E4's
Object side S7 and image side surface S8 is spherical surface；The object side of the object side S3 and image side surface S4 of second lens E2, the third lens E3
The object side S9 and image side surface S10 of S5 and image side surface S6 and the 5th lens E5 is aspherical.Table 20, which is shown, can be used for reality
Apply the high-order coefficient of each aspherical mirror in example 7, wherein each aspherical face type can be by the formula that provides in above-described embodiment 1
(1) it limits.
| Face number | A4 | A6 | A8 |
| S3 | -3.1710E-02 | 4.3250E-03 | -2.1000E-04 |
| S4 | -1.5387E-01 | -5.5340E-02 | 4.5030E-03 |
| S5 | -2.9160E-02 | -4.7500E-02 | 1.0628E-02 |
| S6 | 1.1292E-01 | -1.1832E-01 | 1.9508E-01 |
| S9 | -3.4600E-03 | -4.8300E-03 | -7.3000E-04 |
| S10 | 8.6128E-02 | -3.4310E-02 | 3.5980E-03 |
Table 20
Table 21 give the effective focal length f1 to f5 of each lens in embodiment 7, optical image microscope group total effective focal length f,
Distance TTL, maximum angle of half field-of view HFOV and total effectively coke of the object side S1 to imaging surface S13 of first lens E1 on optical axis
Ratio f/EPD away from f Yu Entry pupil diameters EPD.
| f1(mm) | -7.80 | f(mm) | 1.00 |
| f2(mm) | -1.61 | TTL(mm) | 11.61 |
| f3(mm) | 3.48 | HFOV(°) | 102.1 |
| f4(mm) | 2.81 | f/EPD | 1.96 |
| f5(mm) | 3.74 |
Table 21
Figure 14 A shows chromatic curve on the axis of the optical image microscope group of embodiment 7, indicates the light warp of different wave length
Deviateed by the converging focal point after microscope group.Figure 14 B shows the astigmatism curve of the optical image microscope group of embodiment 7, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 14 C shows the distortion curve of the optical image microscope group of embodiment 7, indicates different
The corresponding distortion sizes values of field angle.Figure 14 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 7, indicates
Light via the different image heights after microscope group on imaging surface deviation.According to Figure 14 A to Figure 14 D it is found that given by embodiment 7
Optical image microscope group can be realized good image quality.
To sum up, embodiment 1 to embodiment 7 meets relationship shown in table 22 respectively.
Table 22
The application also provides a kind of photographic device, and electronics photosensitive element can be photosensitive coupling element (CCD) or complementation
Property matal-oxide semiconductor element (CMOS).Photographic device can be the independent picture pick-up device of such as digital camera, be also possible to
The photographing module being integrated on the mobile electronic devices such as mobile phone.The photographic device is equipped with optical image lens described above
Group.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technologies scheme formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (11)
1. optical image microscope group, along optical axis by object side to image side sequentially include have focal power the first lens and at least one
Subsequent lens, which is characterized in that
The object side of first lens is to distance TTL of the imaging surface on the optical axis of the optical image microscope group and shot
Distance P satisfaction 0.6 < TTL/P × 10 < 1.8 of the object to the object side of first lens on the optical axis.
2. optical image microscope group according to claim 1, which is characterized in that first lens and it is described at least one
In subsequent lens, the object side near the lens of the imaging surface of the optical image microscope group is convex surface.
3. optical image microscope group according to claim 2, which is characterized in that first lens and it is described at least one
In subsequent lens, near the lens of the imaging surface of the optical image microscope group image side surface radius of curvature R LS2 near
The radius of curvature R LS1 of the object side of the lens of the imaging surface of the optical image microscope group meets | RLS2/RLS1 |≤2.0.
4. optical image microscope group according to claim 1, which is characterized in that total effective focal length of the optical image microscope group
The effective focal length f1 of f and first lens meets 0.1 < | f/f1 | < 1.3.
5. optical image microscope group according to claim 1, which is characterized in that total effective focal length of the optical image microscope group
The radius of curvature R 1 of the object side of f and first lens meets | f/R1 |≤2.6.
6. optical image microscope group according to claim 1, which is characterized in that effectively the half of the image side surface of first lens
Effective half bore DT11 of the object side of bore DT12 and first lens meets 0.3 < DT12/DT11 < 1.6.
7. optical image microscope group according to claim 2, which is characterized in that at least one described subsequent lens include second
Lens, the object side of second lens are convex surface.
8. optical image microscope group according to claim 2, which is characterized in that at least one described subsequent lens include along
The optical axis is by the object side to second lens of image side sequential, the third lens and the 4th lens, the 4th lens
Object side be convex surface.
9. optical image microscope group according to any one of claim 1 to 8, which is characterized in that the optical image microscope group
Total effective focal length f and the Entry pupil diameters EPD of the optical image microscope group meet f/EPD≤3.0.
10. optical image microscope group according to any one of claim 1 to 8, which is characterized in that first lens and institute
At least one subsequent lens is stated respectively at the object side of the sum of center thickness on optical axis ∑ CT and first lens extremely
Distance TTL of the imaging surface of the optical image microscope group on the optical axis meets 0.2 < ∑ CT/TTL < 0.7.
11. optical image microscope group according to any one of claim 1 to 8, which is characterized in that the optical image microscope group
Maximum angle of half field-of view HFOV meet 33 ° of 103 ° of < HFOV <.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802974A (en) * | 2018-09-05 | 2018-11-13 | 浙江舜宇光学有限公司 | Optical image microscope group |
| CN113568135A (en) * | 2020-04-28 | 2021-10-29 | 新巨科技股份有限公司 | Miniature lens group for close-range imaging |
-
2018
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802974A (en) * | 2018-09-05 | 2018-11-13 | 浙江舜宇光学有限公司 | Optical image microscope group |
| CN108802974B (en) * | 2018-09-05 | 2023-05-09 | 浙江舜宇光学有限公司 | Optical image lens assembly |
| US11966011B2 (en) | 2018-09-05 | 2024-04-23 | Zhejiang Sunny Optical Co., Ltd | Optical imaging lens assembly |
| CN113568135A (en) * | 2020-04-28 | 2021-10-29 | 新巨科技股份有限公司 | Miniature lens group for close-range imaging |
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