CN208477186U - Optical image microscope group - Google Patents
Optical image microscope group Download PDFInfo
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- CN208477186U CN208477186U CN201820732227.9U CN201820732227U CN208477186U CN 208477186 U CN208477186 U CN 208477186U CN 201820732227 U CN201820732227 U CN 201820732227U CN 208477186 U CN208477186 U CN 208477186U
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Abstract
This application discloses a kind of optical image microscope group, which sequentially may include covering lens and lens group by object side to image side along optical axis, wherein covering lens can have positive light coke or negative power, and object side is plane；Lens group successively may include first lens with positive light coke, the second lens and multiple subsequent lens with negative power by object side to image side, wherein, can meet between the effective focal length f of optical image microscope group and the effective focal length f1 of the first lens: 0.5 < f/f1 < 1.5.
Description
Technical field
This application involves a kind of optical image microscope groups, more particularly, to a kind of light being made of three pieces to eight eyeglasses
Learn image microscope group.
Background technique
By the lightening miniaturization tendency influence of mobile phone market, so that being gradually backed out 2 and 3 lens constructions in market
Also it is able to again full of vitality.But since 2 and 3 camera lenses are by design limitation, optical property still difficulty has biggish breakthrough.
General mobile lens are all that optically focused is carried out by first eyeglass of camera lens, and the protection glass before camera lens functions only as protection camera lens
Effect.In order to meet the needs of market development, Image lens need to shorten camera lens using less number of lenses as far as possible
Overall length, but thus can be difficult to meet the needs of image quality.
Therefore, present applicant proposes one kind to be applicable to portable electronic product, has and minimizes, is good at image quality
Amount, the optical system of low sensitivity characteristic.
Utility model content
Technical solution provided by the present application at least has been partially solved techniques discussed above problem.
According to the one aspect of the application, such a optical image microscope group is provided, the optical image microscope group is along light
Axis sequentially may include covering lens and lens group by object side to image side, wherein covering lens can have positive light coke or negative light focus
Degree, object side are plane；Lens group by object side to image side successively may include first lens with positive light coke, have negative light
The second lens and multiple subsequent lens of focal power, wherein the effective focal length f of optical image microscope group and effective coke of the first lens
Away from can meet between f1: 0.5 < f/f1 < 1.5.
In one embodiment, the effective focal length f of the effective focal length f of optical image microscope group and covering lensTPBetween can
Meet: | f/fTP|<0.5。
In one embodiment, the effective focal length f of the effective focal length f2 of the second lens and covering lensTPBetween can expire
Foot: 0 < | f2/fTP|<1。
In one embodiment, the radius of curvature R of the image side surface of the effective focal length f of optical image group and covering lensTP2
Between can meet: | f/RTP2|<1。
It in one embodiment, can between the effective focal length f of optical image microscope group and the effective focal length f2 of the second lens
Meet: -1 < f/f2 < 0.
In one embodiment, effective half bore D of the object side of lens is coveredTP1With the entrance pupil of optical image microscope group
It can meet between diameter EPD: 0.5 < DTP1/EPD<2.5。
In one embodiment, the curvature of the object side of the radius of curvature R 4 and the first lens of the image side surface of the second lens
It can meet between radius R1: | (R4-R1)/(R4+R1) | < 2.5.
In one embodiment, airspace T of the covering lens and the first lens on optical axisTPWith optical image microscope group
Entry pupil diameters EPD between can meet: 0 < TTP/EPD<1.6。
In one embodiment, conditional: 1 < f/ (CT can be metTP+TTP) < 5, wherein f is optical image microscope group
Effective focal length；CTTPFor the center thickness for covering lens；And TTPCover the airspace of lens and the first lens on optical axis.
In one embodiment, the center thickness CT of lens is coveredTPIt can expire between the center thickness CT2 of the second lens
Foot: 0 < CTTP/CT2<4。
According to the another aspect of the application, additionally provide such a optical image microscope group, the optical image microscope group along
Optical axis sequentially may include covering lens and lens group by object side to image side, wherein covering lens can have positive light coke or negative light
Focal power, object side are plane；Lens group by object side to image side successively may include first lens with positive light coke, have it is negative
The second lens and multiple subsequent lens of focal power, wherein the effective focal length f2 of the second lens and effective coke of covering lens
Away from fTPBetween can meet: 0 < | f2/fTP|<1。
According to the another aspect of the application, additionally provide such a optical image microscope group, the optical image microscope group along
Optical axis sequentially may include covering lens and lens group by object side to image side, wherein covering lens can have positive light coke or negative light
Focal power, object side are plane；Lens group by object side to image side successively may include first lens with positive light coke, have it is negative
The second lens and multiple subsequent lens of focal power, wherein cover effective half bore D of the object side of lensTP1With optics shadow
As microscope group Entry pupil diameters EPD between can meet: 0.5 < DTP1/EPD<2.5。
Optical image microscope group through the above configuration, can have miniaturization, high image quality, balance aberration, low sensitivity,
At least one beneficial effect such as low cost.
Detailed description of the invention
By referring to detailed description made by the following drawings, the above and further advantage of presently filed embodiment will become
It obtains it is clear that attached drawing is intended to show that the illustrative embodiments of the application rather than is limited.In the accompanying drawings:
Fig. 1 is the structural schematic diagram for showing 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 is the structural schematic diagram for showing 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 is the structural schematic diagram for showing 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 is the structural schematic diagram for showing 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 is the structural schematic diagram for showing 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 is the structural schematic diagram for showing 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 is the structural schematic diagram for showing 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；
Figure 15 is the structural schematic diagram for showing the optical image microscope group according to the embodiment of the present application 8；And
Figure 16 A to Figure 16 D respectively illustrates chromatic curve on the axis of the optical image microscope group of embodiment 8, 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, the first, second equal statement is only used for a feature and another feature differentiation
It comes, without indicating any restrictions to feature.Therefore, discussed below without departing substantially from teachings of the present application
First lens are also known as the second 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.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
In bright book use when indicate exist stated feature, entirety, step, operations, elements, and/or components, but do not exclude the presence of or
It is attached with one or more of the other feature, entirety, step, operation, component, assembly unit and/or their combination.In addition, ought be such as
When the statement of at least one of " ... " appears in after the list of listed feature, entire listed feature is modified, rather than is modified
Individual component in list.In addition, when describing presently filed embodiment, use " can with " indicate " one of the application or
Multiple embodiments ".Also, term " illustrative " is intended to refer to example or illustration.
As it is used in the present context, term " substantially ", " about " and similar term are used as the approximate term of table, and
Be not used as the term of table degree, and be intended to illustrate by by those skilled in the art will appreciate that, measured value or calculated value
In inherent variability.
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.
In addition, near axis area refers to the region near optical axis.If lens surface is convex surface and does not define the convex surface position,
Then indicate the lens surface to be less than near axis area be convex surface；If lens surface is concave surface and does not define the concave surface position,
Indicate the lens surface to be less than near axis area be concave surface.Herein, it is known as object near the surface of object in each lens
Side is known as image side surface near the surface of imaging surface in each lens.
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 application is further described below in conjunction with specific embodiment.
It include a covering lens and a lens group according to the optical image microscope group of the application illustrative embodiments, wherein
The lens group includes the first lens, the second lens and multiple subsequent lens.The quantity of subsequent lens is whole more than or equal to zero
Number.The covering lens and lens group along optical axis from object side to image side sequential.
In the exemplary embodiment, covering lens can optionally have positive light coke or negative power, and object side is
Plane；The first lens in lens group can have positive light coke；And the second lens in lens group can have negative power.It is logical
Cross the positive negative power distribution for reasonably controlling each lens, not only can effectively balance control system low order aberration so that
Optical image microscope group obtains preferably image quality, and can realize the characteristic of high pixel.
In the exemplary embodiment, between the effective focal length f of optical image microscope group and the effective focal length f1 of the first lens
It can meet: 0.5 < f/f1 < 1.5 specifically can further satisfaction 0.92≤f/f1≤1.30.First lens strength is positive value,
The effect for collecting light can be undertaken in optical system, which is conducive to weaken the first lens ball in OK range
Difference contribution, and cooperate other lenses that can preferably optimize color difference.
In the exemplary embodiment, the effective focal length f of the effective focal length f of optical image microscope group and covering lensTPBetween
It can meet: | f/fTP| < 0.5, specifically, can further satisfaction 0.03≤| f/fTP|≤0.29.By the Ratio control in reasonable model
The interior focal power distribution that can limit covering lens in entire optical system is enclosed, the tortuous power of control covering lens is conducive to
Weaken the susceptibility of covering lens, in addition plano-concave spherical lens can constrain eyeglass thickness ratio by control focal power, favorably
In machining eyeglass and system assembles.
In the exemplary embodiment, the effective focal length f of the effective focal length f2 of the second lens and covering lensTPBetween can expire
Foot: 0 < | f2/fTP| < 1, specifically, can further satisfaction 0.08≤| f2/fTP|≤0.52.The first lens of system are system light
Collecting lens, conditional limitation covering lens and the second power of lens match, and being constrained in suitable range makes
Obtaining light smooth can collect, and avoid influence of the abnormal reflection light to optical system imaging quality.
In the exemplary embodiment, effective half bore D of the object side of lens is coveredTP1With entering for optical image microscope group
It can meet between pupil diameter EPD: 0.5 < DTP1It/EPD < 2.5 specifically can 0.86≤D of further satisfactionTP1/EPD≤2.26.Ball
For face lens in the case where identical incidence angle, the smaller overall length of bore will be smaller, and optics can be advantageously implemented by meeting the conditional
The Miniaturization Design of system.The bigger thickness ratio of bore will be bigger in the case where radius of curvature determines for spherical lens, to increase
Skill difficulty of processing is processed, which also can have the effect of reducing processing cost.
In the exemplary embodiment, the radius of curvature of the image side surface of the effective focal length f of optical image group and covering lens
RTP2Between can meet: | f/RTP2| < 1, specifically, can further satisfaction 0.06≤| f/RTP2|≤0.55.The conditional can guarantee
Cover lens image side surface radius of curvature and system focal length ratio in a certain range so that off-axis ray have lesser folding
Firing angle degree advantageously reduces the contribution ratio of covering lens spherical aberration in entire optical system.
In the exemplary embodiment, between the effective focal length f of optical image microscope group and the effective focal length f2 of the second lens
It can meet: -1 < f/f2 < 0 specifically can further satisfaction -0.79≤f/f2≤- 0.14.Second lens strength is negative value,
Can be conducive to the distribution of system focal power, optimization system spherical aberration, arrange in pairs or groups the first lens when to be conducive to aberration balanced and promote imaging
Quality.
In the exemplary embodiment, the song of the object side of the radius of curvature R 4 and the first lens of the image side surface of the second lens
Can meet between rate radius R1: | (R4-R1)/(R4+R1) | < 2.5, specifically, can further satisfaction 0.12≤| (R4-R1)/
(R4+R1)|≤2.29.It may make light that there is the lesser angle of divergence in suitable range conditional control, be conducive to
System compact design；And light gentle transition between lens group is advantageously implemented the uniformity of imaging surface image quality.
In the exemplary embodiment, airspace T of the covering lens and the first lens on optical axisTPWith optical image lens
It can meet between the Entry pupil diameters EPD of group: 0 < TTPIt/EPD < 1.6 specifically can 0.11≤T of further satisfactionTP/EPD≤
1.54。TTPAirspace between covering lens and lens group on optical axis, it is more sensitive to the system curvature of field.By the conditional control
System is conducive to the imaging gap of visual field outside centre of equilibrium visual field and axis to system progress curvature of field optimization in suitable range.
In the exemplary embodiment, conditional: 1 < f/ (CT can be metTP+TTPIt) < 5 specifically can further satisfaction
1.20≤f/(CTTP+TTP)≤4.96, wherein f is the effective focal length of optical image microscope group；CTTPFor the center thickness for covering lens
Degree；And TTPCover the airspace of lens and the first lens on optical axis.CTTPWith TTPThe sum of be preposition covering lens overall length,
Conditional control can be conducive into system compact design in suitable range.
In the exemplary embodiment, the center thickness CT of lens is coveredTPIt can between the center thickness CT2 of the second lens
Meet: 0 < CTTPIt/CT2 < 4 specifically can 0.26≤CT of further satisfactionTP/CT2≤3.57.Cover the center thickness pair of lens
The system curvature of field influences significantly, and the center thickness of the second lens has larger contribution to the system curvature of field and coma, which is controlled
It can be conducive to balance image planes image quality uniformity in suitable ratio range.
In the exemplary embodiment, optical image microscope group is also provided with the aperture STO for limiting light beam, adjust into
Light quantity improves image quality.
Optionally, above-mentioned optical image microscope group may also include the protection glass for protecting the photosensitive element being located on imaging surface
Glass.
Multi-disc eyeglass, such as described above three can be used according to the optical image microscope group of the above embodiment of the application
Piece, four, five, six, seven and eight.By each power of lens of reasonable distribution, face type, each lens center thickness
And spacing etc. on the axis between each lens, it can effectively ensure that the miniaturization of camera lens, balance system aberration and improve image quality,
It produces and processes so that optical image microscope group is more advantageous to and is applicable to portable electronic product.
In presently filed embodiment, at least one of mirror surface of each lens is aspherical mirror.Non-spherical lens
The characteristics of be: curvature is consecutive variations from lens centre to periphery.With the spherical surface for having constant curvature from lens centre to periphery
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 enables to the visual field to become much larger and true.After non-spherical lens, it can eliminate and go out when imaging as much as possible
Existing aberration, so as to improve image quality.In addition, the use of non-spherical lens can also efficiently reduce the lens in optical system
Number.
Therefore, according to the optical image microscope group of the application embodiment, the preposition covering protection glass of mobile phone is redefined
To cover lens, collective effect between the addition of new lens and the glass lens processing technology graduallyd mature at present can be mirror
Head design manufacture field and device end manufacturer provide more wide product design thinking, are the diversification of end product function
More performance spaces are provided.According to the optical image microscope group of the application other than being applied to the more camera system of low side, for
The fields such as high-end camera system (4,5,6,7 camera lenses) have equally even preferably application space.
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 camera lens can be changed, to obtain each result and advantage described in this specification.For example, if needing
It wants, which 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 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 1.As shown in Figure 1, optics shadow
As microscope group includes from object side to the covering lens E1 and lens group at image side sequential along optical axis.Covering lens E1 has object
Side S1 and image side surface S2；Lens group includes the first lens E2 and the second lens E3, wherein the first lens E2 has object side S3
With image side surface S4；And second lens E3 have object side S5 and image side surface S6.
In this embodiment, covering lens E1 has positive light coke, and object side S1 is plane；First lens E2 has just
Focal power；And second lens E3 have negative power.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 1 may include having object side S7 and image side surface S8
Optical filter E4, optical filter E4 can be used for correcting color error ratio.Light from object sequentially pass through each surface S1 to S8 and finally at
As on imaging surface S9.
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.
Table 1
The present embodiment uses three pieces lens as an example, passing through the focal length of each eyeglass of reasonable distribution and face type and selecting to close
Suitable material guarantees the miniaturization of camera lens；Correct all kinds of aberrations simultaneously, desensitising, improve the resolution of camera lens at
As quality.Each aspherical face type x is limited by following formula:
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 upper table 1)；Ai is the correction factor of aspherical i-th-th rank.The following table 2, which is shown, can be used for each mirror surface in embodiment 1
The high-order coefficient A of S2-S64、A6、A8、A10、A12、A14、A16、A18And A20。
Table 2
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S2 | -6.5880E-02 | 1.4377E-01 | -1.4879E-01 | 7.8929E-02 | -1.6620E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | 3.5217E-01 | -3.3380E-02 | -8.8807E-01 | 1.6631E+01 | 5.7724E+00 | -2.2677E+02 | 1.5986E+02 | -8.5043E+00 | -9.8071E-06 |
| S4 | 3.6969E-01 | 2.0991E+00 | -6.8526E+00 | 1.4007E+00 | 1.8152E+02 | -2.4653E+02 | -5.2312E+02 | -9.8000E-07 | -9.6790E-07 |
| S5 | -3.6673E-01 | -3.2022E-01 | -6.8698E+00 | 5.2919E+01 | -1.3780E+02 | 6.3036E+01 | 1.2149E+02 | 1.9542E+02 | -4.2568E+02 |
| S6 | -6.5420E-02 | -2.9331E-01 | 7.5931E-01 | -1.3591E+00 | 1.2956E+00 | -4.5824E-01 | -1.8036E-01 | 1.8604E-01 | -3.8929E-02 |
The following table 3 shows the effective focal length f of each lens of embodiment 1TP, f1 and f2, optical image microscope group effective focal length
F, the object side S1 of lens E1 to distance TTL of the imaging surface S9 on optical axis of optical image microscope group is covered (that is, optical image lens
The optics total length of group), the maximum angle of half field-of view HFOV of optical image microscope group and the F-number Fno of optical image microscope group.
Table 3
| fTP(mm) | 8.03 | f(mm) | 2.30 |
| f1(mm) | 2.45 | TTL(mm) | 3.66 |
| f2(mm) | -4.16 | HFOV(°) | 30.8 |
| Fno | 2.46 |
In conjunction with upper table 1, table 3, in this embodiment:
The effective focal length f of the effective focal length f and covering lens E1 of optical image microscope groupTPBetween meet | f/fTP|=0.29；
In one embodiment, between the effective focal length f of optical image microscope group and the effective focal length f1 of the first lens E2
Meet f/f1=0.94；
In one embodiment, airspace T of the covering lens E1 and the first lens E2 on optical axisTPWith optical image
Meet T between the Entry pupil diameters EPD of microscope groupTP/ EPD=1.02；
In one embodiment, the curvature half of the image side surface S2 of the effective focal length f of optical image group and covering lens E1
Diameter RTP2Between meet | f/RTP2|=0.55；
In one embodiment, between the effective focal length f of optical image microscope group and the effective focal length f2 of the second lens E3
Meet f/f2=-0.55；
In one embodiment, effective half bore D of the object side S1 of lens E1 is coveredTP1With optical image microscope group
Meet D between Entry pupil diameters EPDTP1/ EPD=1.36；
In one embodiment, the object side of the radius of curvature R 4 of the image side surface S6 of the second lens E3 and the first lens E2
Meet between the radius of curvature R 1 of S3 | (R4-R1)/(R4+R1) | < 2.5=0.65.
In one embodiment, the effective focal length f of the effective focal length f2 of the second lens E3 and covering lens E1TPBetween it is full
Foot | f2/fTP|=0.52；
In one embodiment, meet f/ (CTTP+TTP)=1.78, wherein f is effective coke of optical image microscope group
Away from；CTTPFor the center thickness for covering lens E1；And TTPBetween the air of covering lens E1 and the first lens E2 on optical axis
Every；And
In one embodiment, the center thickness CT of lens E1 is coveredTPBetween the center thickness CT2 of the second lens E3
Meet CTTP/ CT2=0.39.
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 optical image microscope group.Fig. 2 B shows the astigmatism curve of the optical image microscope group of embodiment 1, table
Show meridianal image surface bending and sagittal image surface bending.Fig. 2 C shows the distortion curve of the optical image microscope group of embodiment 1, indicates
Distortion sizes values in the case of different perspectives.Fig. 2 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 1, table
Show light via the deviation of the different image heights after optical image microscope group on imaging surface.A to Fig. 2 D is it is found that implement according to fig. 2
Optical image microscope group given by example 1 can be realized good image quality.
Embodiment 2
The optical image microscope group according to the embodiment of the present application 2 is described referring to Fig. 3 to Fig. 4 D.In addition to optical image lens
Group each eyeglass parameter except, such as on the radius of curvature in addition to each eyeglass, thickness, circular cone coefficient, effective focal length, axis between
Except high-order coefficient away from, each mirror surface etc., optical image microscope group and reality described in the present embodiment 2 and following embodiment
The arragement construction for applying optical image microscope group described in example 1 is identical.For brevity, clipped is similar to Example 1
Description.
Fig. 3 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 2.As shown in figure 3, according to reality
The optical image microscope group for applying example 2 includes covering lens E1 and lens group.Covering lens E1 has object side S1 and image side surface S2；Thoroughly
Microscope group includes the first lens E2 and the second lens E3, wherein the first lens E2 has object side S3 and image side surface S4；And second
Lens E3 has object side S5 and image side surface S6.
In this embodiment, covering lens E1 has negative power, and object side S1 is plane；First lens E2 has just
Focal power；And second lens E3 have negative power.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 2 may include having object side S7 and image side surface S8
Optical filter E4, optical filter E4 can be used for correcting color error ratio.Light from object sequentially pass through each surface S1 to S8 and finally at
As on imaging surface S9.
The following table 4 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 2
And circular cone coefficient.Table 5 shows the high-order coefficient of each aspherical mirror in embodiment 2.Table 6 shows each of embodiment 2
The effective focal length f of mirrorTP, f1 and f2, optical image microscope group effective focal length f, cover the object side S1 of lens E1 to optical image
Distance TTL (that is, optics total length of optical image microscope group) of the imaging surface S9 of microscope group on optical axis, optical image microscope group are most
The F-number Fno of big angle of half field-of view HFOV and optical image microscope group.Wherein, each aspherical face type can be by above-described embodiment 1
The formula (1) provided limits.
Table 4
Table 5
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S2 | 1.3928E-02 | -3.3000E-03 | 5.1300E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -3.3750E-02 | 5.0397E+00 | -1.2309E+02 | 1.8296E+03 | -1.6936E+04 | 9.8544E+04 | -3.5020E+05 | 6.9416E+05 | -5.8792E+05 |
| S4 | -2.7150E-02 | 3.0851E+00 | -5.2671E+01 | 5.3057E+02 | -3.1997E+03 | 1.1622E+04 | -2.4472E+04 | 2.6952E+04 | -1.1743E+04 |
| S5 | 8.6390E-03 | -1.1005E+00 | 5.5084E+00 | -1.9249E+01 | 4.4377E+01 | -6.5523E+01 | 5.9044E+01 | -2.9444E+01 | 6.1933E+00 |
| S6 | 2.0840E-01 | -8.0005E-01 | 1.3166E+00 | -1.3747E+00 | 9.4070E-01 | -4.2098E-01 | 1.1846E-01 | -1.8990E-02 | 1.3210E-03 |
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 optical image microscope group.Fig. 4 B shows the astigmatism curve of the optical image microscope group of embodiment 2, table
Show meridianal image surface bending and sagittal image surface bending.Fig. 4 C shows the distortion curve of the optical image microscope group of embodiment 2, indicates
Distortion sizes values in the case of different perspectives.Fig. 4 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 2, table
Show light via the deviation of the different image heights after optical image microscope group on imaging surface.According to Fig. 4 A to Fig. 4 D it is found that implementing
Optical image microscope group given by example 2 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 the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 3.As shown in figure 5, according to reality
The optical image microscope group for applying example 3 includes covering lens E1 and lens group.Covering lens E1 has object side S1 and image side surface S2；Thoroughly
Microscope group includes the first lens E2, the second lens E3 and the third lens E4, wherein the first lens E2 has object side S3 and image side surface
S4；Second lens E3 has object side S5 and image side surface S6；And the third lens E4 has object side S7 and image side surface S8.
In this embodiment, covering lens E1 has positive light coke, and object side S1 is plane；First lens E2 has just
Focal power；Second lens E3 has negative power；And the third lens E4 has positive light coke.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 3 may include with object side S9 and image side surface S10
Optical filter E5, optical filter E5 can be used for correcting color error ratio.Light from object sequentially passes through each surface S1 to S10 and final
It is imaged on imaging surface S11.
The following table 7 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 3
And circular cone coefficient.Table 8 shows the high-order coefficient of each aspherical mirror in embodiment 3.Table 9 shows each of embodiment 3
The effective focal length f of mirrorTP, f1 to f3, optical image microscope group effective focal length f, cover the object side S1 of lens E1 to optical image
Distance TTL (that is, optics total length of optical image microscope group) of the imaging surface S11 of microscope group on optical axis, optical image microscope group
The F-number Fno of maximum angle of half field-of view HFOV and optical image microscope group.Wherein, each aspherical face type can be by above-described embodiment 1
In the formula (1) that provides limit.
Table 7
Table 8
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | -2.2960E-01 | 2.7830E-01 | 2.4014E-01 | -1.0790E+01 | -6.5900E+01 | 2.0925E+02 | 3.1693E+03 | -1.1261E+04 | 2.3800E-13 |
| S4 | -3.4989E-01 | -3.3380E-01 | 1.1902E+00 | -1.5625E-01 | -2.7837E+00 | 1.8519E-01 | 8.5567E+00 | -8.1757E+00 | 2.1500E-13 |
| S5 | -1.9629E-01 | 8.4640E-02 | -6.3751E-02 | 5.9336E-02 | 8.4880E-03 | -1.9410E-02 | -6.5900E-03 | 4.9520E-03 | 3.5300E-05 |
| S6 | 1.4804E-01 | -1.9141E-01 | 9.8986E-02 | -7.6600E-03 | -6.2300E-03 | -1.3400E-03 | 4.7740E-03 | -3.6400E-03 | 6.8700E-04 |
| S7 | -7.9990E-02 | 4.7118E-01 | -1.8821E-01 | -9.1460E-02 | 3.9592E-02 | 2.6995E-02 | -2.7800E-03 | -7.9400E-03 | 1.7210E-03 |
| S8 | -1.1382E-01 | 1.0280E-01 | -6.5168E-02 | 4.7589E-02 | 1.3468E-02 | -8.1200E-03 | -4.8700E-03 | 5.9000E-04 | 5.2000E-04 |
Table 9
| fTP(mm) | 29.30 | f(mm) | 1.81 |
| f1(mm) | 1.40 | TTL(mm) | 5.18 |
| f2(mm) | -2.28 | HFOV(°) | 45.0 |
| f3(mm) | 2.07 | Fno | 2.00 |
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 optical image microscope group.Fig. 6 B shows the astigmatism curve of the optical image microscope group of embodiment 3, table
Show meridianal image surface bending and sagittal image surface bending.Fig. 6 C shows the distortion curve of the optical image microscope group of embodiment 3, indicates
Distortion sizes values in the case of different perspectives.Fig. 6 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 3, table
Show light via the deviation of the different image heights after optical image microscope group on imaging surface.According to Fig. 6 A to Fig. 6 D it is found that implementing
Optical image microscope group given by example 3 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 the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 4.As shown in fig. 7, according to reality
The optical image microscope group for applying example 4 includes covering lens E1 and lens group.Covering lens E1 has object side S1 and image side surface S2；Thoroughly
Microscope group includes the first lens E2, the second lens E3 and the third lens E4, wherein the first lens E2 has object side S3 and image side surface
S4；Second lens E3 has object side S5 and image side surface S6；And the third lens E4 has object side S7 and image side surface S8.
In this embodiment, covering lens E1 has negative power, and object side S1 is plane；First lens E2 has just
Focal power；Second lens E3 has negative power；And the third lens E4 has positive light coke.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 4 may include with object side S9 and image side surface S10
Optical filter E5, optical filter E5 can be used for correcting color error ratio.Light from object sequentially passes through each surface S1 to S10 and final
It is imaged on imaging surface S11.
The following table 10 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 4
Material and circular cone coefficient.Table 11 shows the high-order coefficient of each aspherical mirror in embodiment 4.Table 12 shows embodiment 4
The effective focal length f of each lensTP, f1 to f3, optical image microscope group effective focal length f, cover the object side S1 of lens E1 to optics
Distance TTL (that is, optics total length of optical image microscope group), optical image lens of the imaging surface S11 of image microscope group on optical axis
The maximum angle of half field-of view HFOV of the group and F-number Fno of optical image microscope group.Wherein, each aspherical face type can be by above-mentioned implementation
The formula (1) provided in example 1 limits.
Table 10
Table 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 1.2872E-01 | -5.7413E-01 | -4.2996E-01 | 2.5411E+00 | -1.6974E+00 | -1.2860E+01 | 1.8936E+01 | -3.7190E-02 | 2.3400E-11 |
| S4 | -1.7121E-01 | -1.4059E-01 | 1.2124E-01 | -3.0815E-01 | 3.2744E-01 | 5.3066E-01 | -8.5159E-01 | -2.2655E+00 | 3.1285E+00 |
| S5 | 2.3718E-01 | 4.7189E-01 | -1.7130E-01 | -2.0080E-01 | -1.9100E-03 | 1.0270E-01 | 7.7891E-02 | -3.5480E-02 | -3.4990E-02 |
| S6 | 4.0091E-01 | 2.5497E-01 | -1.2783E-01 | -1.6500E-02 | 4.9795E-02 | 2.4917E-02 | -1.9630E-02 | -2.5260E-02 | 3.7456E-02 |
| S7 | 1.4559E-02 | 5.5830E-02 | -1.2287E-01 | 5.0050E-02 | 5.9795E-02 | -8.2640E-02 | 1.7668E-02 | 2.0148E-02 | -9.1000E-03 |
| S8 | -4.0150E-02 | 1.5110E-01 | -1.6113E-01 | 5.7770E-02 | 8.0380E-03 | -1.3850E-02 | 2.0610E-03 | 2.1590E-03 | -7.9000E-04 |
Table 12
| fTP(mm) | -22.61 | f(mm) | 2.40 |
| f1(mm) | 2.21 | TTL(mm) | 5.50 |
| f2(mm) | -5.95 | HFOV(°) | 37.0 |
| f3(mm) | 4.99 | Fno | 2.00 |
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 optical image microscope group.Fig. 8 B shows the astigmatism curve of the optical image microscope group of embodiment 4, table
Show meridianal image surface bending and sagittal image surface bending.Fig. 8 C shows the distortion curve of the optical image microscope group of embodiment 4, indicates
Distortion sizes values in the case of different perspectives.Fig. 8 D shows the ratio chromatism, curve of the optical image microscope group of embodiment 4, table
Show light via the deviation of the different image heights after optical image microscope group on imaging surface.According to Fig. 8 A to Fig. 8 D it is found that implementing
Optical image microscope group given by example 4 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 the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 5.As shown in figure 9, according to reality
The optical image microscope group for applying example 5 includes covering lens E1 and lens group.Covering lens E1 has object side S1 and image side surface S2；Thoroughly
Microscope group includes the first lens E2, the second lens E3, the third lens E4 and the 4th lens E5, wherein the first lens E2 has object side
Face S3 and image side surface S4；Second lens E3 has object side S5 and image side surface S6；The third lens E4 has object side S7 and image side
Face S8；And the 4th lens E5 have object side S9 and image side surface S10.
In this embodiment, covering lens E1 has negative power, and object side S1 is plane；First lens E2 has just
Focal power；Second lens E3 has negative power；The third lens E4 has positive light coke；And the 4th lens E5 have negative light focus
Degree.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 5 may include with object side S11 and image side surface S12
Optical filter E6, optical filter E6 can be used for correcting color error ratio.Light from object sequentially passes through each surface S1 to S12 and final
It is imaged on imaging surface S13.
The following table 13 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 5
Material and circular cone coefficient.Table 14 shows the high-order coefficient of each aspherical mirror in embodiment 5.Table 15 shows embodiment 5
The effective focal length f of each lensTP, f1 to f4, optical image microscope group effective focal length f, cover the object side S1 of lens E1 to optics
Distance TTL (that is, optics total length of optical image microscope group), optical image lens of the imaging surface S13 of image microscope group on optical axis
The maximum angle of half field-of view HFOV of the group and F-number Fno of optical image microscope group.Wherein, each aspherical face type can be by above-mentioned implementation
The formula (1) provided in example 1 limits.
Table 13
Table 14
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 3.3320E-01 | -4.4907E-01 | -8.2884E-01 | 1.4856E+01 | -8.3739E+01 | 2.6726E+02 | -5.0385E+02 | 5.2198E+02 | -2.2970E+02 |
| S4 | -1.1506E-01 | -5.0522E-01 | 5.3926E+00 | -4.4859E+01 | 2.1930E+02 | -6.6258E+02 | 1.2030E+03 | -1.1973E+03 | 5.0023E+02 |
| S5 | -3.8572E-01 | 2.7388E-01 | -6.1959E+00 | 4.4425E+01 | -2.0700E+02 | 6.0247E+02 | -1.0680E+03 | 1.0590E+03 | -4.4669E+02 |
| S6 | -8.6800E-03 | -3.0775E-01 | 9.5836E-01 | -2.0939E+00 | 2.6479E+00 | -1.6827E+00 | 2.4557E-01 | 2.7064E-01 | -8.6100E-02 |
| S7 | 9.5955E-02 | -1.3649E-01 | 5.0414E-01 | -6.2946E-01 | -3.2520E-01 | 1.6846E+00 | -1.8648E+00 | 9.1966E-01 | -1.7487E-01 |
| S8 | -3.7196E-01 | 7.3818E-01 | -1.6285E+00 | 3.2617E+00 | -4.7224E+00 | 4.6385E+00 | -2.8054E+00 | 9.2044E-01 | -1.2456E-01 |
| S9 | -5.2070E-02 | -7.1384E-01 | 1.9808E+00 | -3.0649E+00 | 3.0428E+00 | -1.9498E+00 | 7.7745E-01 | -1.7497E-01 | 1.6913E-02 |
| S10 | -1.9369E-01 | 1.6962E-01 | -9.9090E-02 | 3.1176E-02 | -7.7000E-04 | -3.2400E-03 | 1.1790E-03 | -1.8000E-04 | 1.0400E-05 |
Table 15
| fTP(mm) | -64.32 | f(mm) | 2.83 |
| f1(mm) | 3.09 | TTL(mm) | 5.53 |
| f2(mm) | -5.43 | HFOV(°) | 40.3 |
| f3(mm) | 1.49 | Fno | 2.07 |
| f4(mm) | -1.54 |
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 optical image microscope group.Figure 10 B shows the astigmatism curve of the optical image microscope group of embodiment 5,
Indicate meridianal image surface bending and sagittal image surface bending.Figure 10 C shows the distortion curve of the optical image microscope group of embodiment 5,
Indicate the distortion sizes values in the case of different perspectives.The ratio chromatism, that Figure 10 D shows the optical image microscope group of embodiment 5 is bent
Line indicates light via the deviation of the different image heights after optical image microscope group on imaging surface.According to Figure 10 A to Figure 10 D
It is found that optical image microscope group given by embodiment 5 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 the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 6.As shown in figure 11, according to
The optical image microscope group of embodiment 6 includes covering lens E1 and lens group.Covering lens E1 has object side S1 and image side surface S2；
Lens group includes the first lens E2, the second lens E3, the third lens E4, the 4th lens E5 and the 5th lens E6, wherein first thoroughly
Mirror E2 has object side S3 and image side surface S4；Second lens E3 has object side S5 and image side surface S6；The third lens E4 has object
Side S7 and image side surface S8；4th lens E5 has object side S9 and image side surface S10；And the 5th lens E6 have object side
S11 and image side surface S12.
In this embodiment, covering lens E1 has negative power, and object side S1 is plane；First lens E2 has just
Focal power；Second lens E3 has negative power；The third lens E4 has negative power；4th lens E5 has positive light coke；
And the 5th lens E6 have negative power.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 6 may include with object side S13 and image side surface S14
Optical filter E7, optical filter E7 can be used for correcting color error ratio.Light from object sequentially passes through each surface S1 to S14 and final
It is imaged on imaging surface S15.
The following table 16 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 6
Material and circular cone coefficient.Table 17 shows the high-order coefficient of each aspherical mirror in embodiment 6.Table 18 shows embodiment 6
The effective focal length f of each lensTP, f1 to f5, optical image microscope group effective focal length f, cover the object side S1 of lens E1 to optics
Distance TTL (that is, optics total length of optical image microscope group), optical image lens of the imaging surface S15 of image microscope group on optical axis
The maximum angle of half field-of view HFOV of the group and F-number Fno of optical image microscope group.Wherein, each aspherical face type can be by above-mentioned implementation
The formula (1) provided in example 1 limits.
Table 16
Table 17
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 7.5590E-03 | -4.3390E-02 | 2.8253E-01 | -9.4091E-01 | 1.7833E+00 | -2.0584E+00 | 1.4180E+00 | -5.5247E-01 | 8.5917E-02 |
| S4 | 5.3274E-02 | 1.1366E-02 | -3.2313E-01 | 5.8869E-01 | -4.4141E-01 | -2.5878E-01 | 6.7503E-01 | -4.3621E-01 | 9.3704E-02 |
| S5 | -1.3000E-04 | 9.0101E-02 | -3.5919E-01 | 3.9645E-01 | 9.6354E-02 | -8.4050E-01 | 9.5577E-01 | -4.2830E-01 | 6.3337E-02 |
| S6 | -2.0174E-01 | 3.4691E-01 | -8.8821E-01 | 2.2814E+00 | -4.5046E+00 | 6.0642E+00 | -5.1161E+00 | 2.4763E+00 | -5.1332E-01 |
| S7 | -2.8896E-01 | 3.4552E-02 | -5.1070E-02 | -3.6540E-02 | 8.3856E-02 | 5.1400E-04 | 7.0800E-04 | -2.4000E-05 | -1.6000E-05 |
| S8 | -1.3468E-01 | -6.4500E-03 | 9.2880E-03 | 1.4604E-02 | -4.0200E-03 | -4.1000E-06 | 2.9300E-04 | -6.7000E-06 | -1.6000E-05 |
| S9 | 1.1635E-02 | -1.0690E-02 | 2.7429E-02 | -1.2360E-02 | 2.1860E-03 | 1.7100E-04 | -3.6000E-05 | -5.4000E-05 | 1.5600E-05 |
| S10 | 3.9337E-02 | -4.7600E-02 | 1.2145E-02 | 8.7760E-03 | -2.7100E-03 | 2.8700E-04 | 5.3400E-05 | -5.6000E-06 | -1.4000E-05 |
| S11 | -9.0920E-02 | 1.0986E-02 | 2.7700E-03 | -6.2000E-04 | -3.0000E-05 | 7.4600E-06 | 1.6600E-06 | 2.5500E-07 | -8.8000E-08 |
| S12 | -7.5010E-02 | 2.3111E-02 | -4.8300E-03 | 4.1800E-04 | 4.0000E-06 | -2.1000E-06 | -1.9000E-07 | 3.7900E-09 | 4.1400E-09 |
Table 18
| fTP(mm) | -12.75 | f(mm) | 2.88 |
| f1(mm) | 2.41 | TTL(mm) | 5.45 |
| f2(mm) | -6.25 | HFOV(°) | 42.0 |
| f3(mm) | -9.28 | Fno | 1.70 |
| f4(mm) | 1.97 | ||
| f5(mm) | -2.99 |
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 optical image microscope group.Figure 12 B shows the astigmatism curve of the optical image microscope group of embodiment 6,
Indicate meridianal image surface bending and sagittal image surface bending.Figure 12 C shows the distortion curve of the optical image microscope group of embodiment 6,
Indicate the distortion sizes values in the case of different perspectives.The ratio chromatism, that Figure 12 D shows the optical image microscope group of embodiment 6 is bent
Line indicates light via the deviation of the different image heights after optical image microscope group on imaging surface.According to Figure 12 A to Figure 12 D
It is found that optical image microscope group given by embodiment 6 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 the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 7.As shown in figure 13, according to
The optical image microscope group of embodiment 7 includes covering lens E1 and lens group.Covering lens E1 has object side S1 and image side surface S2；
Lens group includes the first lens E2, the second lens E3, the third lens E4, the 4th lens E5, the 5th lens E6 and the 6th lens E7,
Wherein, the first lens E2 has object side S3 and image side surface S4；Second lens E3 has object side S5 and image side surface S6；Third is saturating
Mirror E4 has object side S7 and image side surface S8；4th lens E5 has object side S9 and image side surface S10；5th lens E6 has object
Side S11 and image side surface S12；And the 6th lens E7 have object side S13 and image side surface S14.
In this embodiment, covering lens E1 has negative power, and object side S1 is plane；First lens E2 has just
Focal power；Second lens E3 has negative power；The third lens E4 has positive light coke；4th lens E5 has negative power；
5th lens E6 has positive light coke；And the 6th lens E7 have negative power.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 7 may include with object side S15 and image side surface S16
Optical filter E8, optical filter E8 can be used for correcting color error ratio.Light from object sequentially passes through each surface S1 to S16 and final
It is imaged on imaging surface S17.
The following table 19 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 7
Material and circular cone coefficient.Table 20 shows the high-order coefficient of each aspherical mirror in embodiment 7.Table 21 shows embodiment 7
The effective focal length f of each lensTP, f1 to f6, optical image microscope group effective focal length f, cover the object side S1 of lens E1 to optics
Distance TTL (that is, optics total length of optical image microscope group), optical image lens of the imaging surface S17 of image microscope group on optical axis
The maximum angle of half field-of view HFOV of the group and F-number Fno of optical image microscope group.Wherein, each aspherical face type can be by above-mentioned implementation
The formula (1) provided in example 1 limits.
Table 19
Table 20
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 7.8162E-02 | -1.7290E-02 | 6.9907E-02 | -1.9298E-01 | 3.4376E-01 | -3.8804E-01 | 2.6470E-01 | -1.0048E-01 | 1.5456E-02 |
| S4 | -1.1917E-01 | 1.6532E-01 | -2.3008E-01 | 3.3650E-01 | -4.5801E-01 | 4.3071E-01 | -2.5213E-01 | 8.2495E-02 | -1.1770E-02 |
| S5 | -1.3889E-01 | 2.0091E-01 | -2.2868E-01 | 5.8530E-01 | -1.3899E+00 | 2.0449E+00 | -1.7597E+00 | 8.3015E-01 | -1.6592E-01 |
| S6 | -7.5900E-02 | 1.6987E-01 | -1.7660E-01 | 5.7478E-01 | -1.6024E+00 | 2.6787E+00 | -2.4174E+00 | 1.0427E+00 | -1.1503E-01 |
| S7 | -8.3000E-02 | -8.6970E-02 | 5.1848E-01 | -2.8362E+00 | 8.5013E+00 | -1.5416E+01 | 1.6673E+01 | -9.9157E+00 | 2.5128E+00 |
| S8 | -9.8820E-02 | 5.2412E-02 | -1.5387E-01 | 8.0187E-02 | 2.6772E-01 | -6.9188E-01 | 7.4495E-01 | -4.0091E-01 | 8.8991E-02 |
| S9 | -1.9849E-01 | 2.8049E-01 | -2.3578E-01 | 2.6768E-02 | 5.9147E-01 | -1.1144E+00 | 9.3486E-01 | -3.9021E-01 | 6.5957E-02 |
| S10 | -2.6025E-01 | 2.9932E-01 | -2.7140E-01 | 2.4951E-01 | -9.9910E-02 | -3.9340E-02 | 5.2064E-02 | -1.8150E-02 | 2.2380E-03 |
| S11 | -1.1975E-01 | 1.4464E-02 | 1.7265E-02 | -4.7350E-02 | 5.5509E-02 | -3.5990E-02 | 1.3061E-02 | -2.4600E-03 | 1.8700E-04 |
| S12 | -2.9240E-02 | 5.4480E-03 | -2.3420E-02 | 1.9205E-02 | -7.7900E-03 | 1.6180E-03 | -1.3000E-04 | -4.4000E-06 | 9.3900E-07 |
| S13 | -3.1848E-01 | 1.9592E-01 | -8.7510E-02 | 2.2684E-02 | -2.0500E-03 | -4.2000E-04 | 1.3200E-04 | -1.3000E-05 | 4.9400E-07 |
| S14 | -1.5325E-01 | 9.9088E-02 | -4.7840E-02 | 1.5969E-02 | -3.7000E-03 | 5.9100E-04 | -6.2000E-05 | 3.7300E-06 | -9.8000E-08 |
Table 21
| fTP(mm) | -64.32 | f(mm) | 4.10 |
| f1(mm) | 3.45 | TTL(mm) | 5.68 |
| f2(mm) | -9.39 | HFOV(°) | 36.0 |
| f3(mm) | 13.96 | Fno | 1.85 |
| f4(mm) | -12.73 | ||
| f5(mm) | 9.91 | ||
| f6(mm) | -6.07 |
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 optical image microscope group.Figure 14 B shows the astigmatism curve of the optical image microscope group of embodiment 7,
Indicate meridianal image surface bending and sagittal image surface bending.Figure 14 C shows the distortion curve of the optical image microscope group of embodiment 7,
Indicate the distortion sizes values in the case of different perspectives.The ratio chromatism, that Figure 14 D shows the optical image microscope group of embodiment 7 is bent
Line indicates light via the deviation of the different image heights after optical image microscope group on imaging surface.According to Figure 14 A to Figure 14 D
It is found that optical image microscope group given by embodiment 7 can be realized good image quality.
Embodiment 8
The optical image microscope group according to the embodiment of the present application 8 is described referring to Figure 15 to Figure 16 D.
Figure 15 shows the structural schematic diagram of the optical image microscope group according to the embodiment of the present application 8.As shown in figure 15, according to
The optical image microscope group of embodiment 8 includes covering lens E1 and lens group.Covering lens E1 has object side S1 and image side surface S2；
Lens group include the first lens E2, the second lens E3, the third lens E4, the 4th lens E5, the 5th lens E6, the 6th lens E7 and
7th lens E8, wherein the first lens E2 has object side S3 and image side surface S4；Second lens E3 has object side S5 and image side
Face S6；The third lens E4 has object side S7 and image side surface S8；4th lens E5 has object side S9 and image side surface S10；5th
Lens E6 has object side S11 and image side surface S12；6th lens E7 has object side S13 and image side surface S14；And the 7th thoroughly
Mirror E8 has object side S15 and image side surface S16.
In this embodiment, covering lens E1 has negative power, and object side S1 is plane；First lens E2 has just
Focal power；Second lens E3 has negative power；The third lens E4 has positive light coke；4th lens E5 has negative power；
5th lens E6 has negative power；6th lens E7 has positive light coke；And the 7th lens E8 have negative power.
It further include for limiting light beam, setting in covering lens E1 and the in the optical image microscope group of the present embodiment
Aperture STO between one lens E2.Optical image microscope group according to embodiment 8 may include with object side S17 and image side surface S18
Optical filter E9, optical filter E9 can be used for correcting color error ratio.Light from object sequentially passes through each surface S1 to S18 and final
It is imaged on imaging surface S19.
The following table 22 shows surface type, radius of curvature, thickness, the material of each lens of the optical image microscope group of embodiment 8
Material and circular cone coefficient.Table 23 shows the high-order coefficient of each aspherical mirror in embodiment 8.Table 24 shows embodiment 8
The effective focal length f of each lensTP, f1 to f7, optical image microscope group effective focal length f, cover the object side S1 of lens E1 to optics
Distance TTL (that is, optics total length of optical image microscope group), optical image lens of the imaging surface S19 of image microscope group on optical axis
The maximum angle of half field-of view HFOV of the group and F-number Fno of optical image microscope group.Wherein, each aspherical face type can be by above-mentioned implementation
The formula (1) provided in example 1 limits.
Table 22
Table 23
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 7.9409E-02 | -1.2930E-02 | 6.2579E-02 | -2.0611E-01 | 4.2897E-01 | -5.4794E-01 | 4.1435E-01 | -1.7139E-01 | 2.8724E-02 |
| S4 | -1.0666E-01 | 1.4957E-01 | -2.3428E-01 | 4.0780E-01 | -6.3048E-01 | 6.4141E-01 | -3.9677E-01 | 1.3536E-01 | -1.9740E-02 |
| S5 | -1.2563E-01 | 1.6652E-01 | -2.2463E-01 | 6.8859E-01 | -1.6360E+00 | 2.3584E+00 | -1.9968E+00 | 9.3076E-01 | -1.8432E-01 |
| S6 | -6.1750E-02 | 1.4066E-01 | -3.9630E-01 | 1.8558E+00 | -5.3703E+00 | 9.4661E+00 | -9.8234E+00 | 5.5339E+00 | -1.2732E+00 |
| S7 | -6.8960E-02 | -2.8100E-02 | -2.7474E-01 | 9.3307E-01 | -2.0631E+00 | 3.1240E+00 | -3.0484E+00 | 1.7200E+00 | -4.1636E-01 |
| S8 | -4.8000E-03 | 1.5120E-01 | -6.7912E-01 | 9.8277E-01 | -8.0860E-02 | -1.2631E+00 | 1.4161E+00 | -6.1465E-01 | 8.8011E-02 |
| S9 | -3.5670E-02 | 2.9575E-01 | -1.0321E+00 | 1.7077E+00 | -1.2026E+00 | -1.1424E-01 | 7.2241E-01 | -4.3084E-01 | 8.7682E-02 |
| S10 | -1.1727E-01 | 1.9200E-01 | -4.2815E-01 | 3.8357E-01 | -1.8400E-02 | -2.5837E-01 | 2.6836E-01 | -1.4590E-01 | 3.5710E-02 |
| S11 | -1.7380E-01 | 2.4251E-01 | -2.5480E-02 | -7.3191E-01 | 1.6266E+00 | -1.6349E+00 | 8.6857E-01 | -2.4051E-01 | 2.7992E-02 |
| S12 | -2.4691E-01 | 2.6261E-01 | -7.6650E-02 | -2.7612E-01 | 6.0594E-01 | -5.6257E-01 | 2.7230E-01 | -6.7640E-02 | 6.8510E-03 |
| S13 | -1.3645E-01 | 2.2495E-02 | 3.8552E-02 | -9.7890E-02 | 1.0801E-01 | -6.7190E-02 | 2.3798E-02 | -4.4400E-03 | 3.3700E-04 |
| S14 | -2.4580E-02 | -2.1710E-02 | 1.7597E-02 | -1.5770E-02 | 1.0584E-02 | -4.4600E-03 | 1.0890E-03 | -1.4000E-04 | 7.1800E-06 |
| S15 | -3.2344E-01 | 1.8928E-01 | -8.2430E-02 | 2.0148E-02 | -1.2500E-03 | -5.5000E-04 | 1.4200E-04 | -1.4000E-05 | 4.8600E-07 |
| S16 | -1.6847E-01 | 1.1300E-01 | -5.7620E-02 | 2.0480E-02 | -5.0700E-03 | 8.6400E-04 | -9.6000E-05 | 6.1400E-06 | -1.7000E-07 |
Table 24
Figure 16 A shows chromatic curve on the axis of the optical image microscope group of embodiment 8, indicates the light warp of different wave length
Deviateed by the converging focal point after optical image microscope group.Figure 16 B shows the astigmatism curve of the optical image microscope group of embodiment 8,
Indicate meridianal image surface bending and sagittal image surface bending.Figure 16 C shows the distortion curve of the optical image microscope group of embodiment 8,
Indicate the distortion sizes values in the case of different perspectives.The ratio chromatism, that Figure 16 D shows the optical image microscope group of embodiment 8 is bent
Line indicates light via the deviation of the different image heights after optical image microscope group on imaging surface.According to Figure 16 A to Figure 16 D
It is found that optical image microscope group given by embodiment 8 can be realized good image quality.
To sum up, embodiment 1 to embodiment 8 meets relationship shown in following table 25 respectively.
Table 25
| Conditional/embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| |f/fTP| | 0.29 | 0.03 | 0.06 | 0.11 | 0.04 | 0.23 | 0.06 | 0.06 |
| f/f1 | 0.94 | 0.98 | 1.30 | 1.09 | 0.92 | 1.20 | 1.19 | 1.20 |
| |f/RTP2| | 0.55 | 0.06 | 0.12 | 0.20 | 0.08 | 0.44 | 0.12 | 0.12 |
| f/f2 | -0.55 | -0.14 | -0.79 | -0.40 | -0.52 | -0.46 | -0.44 | -0.46 |
| DTP1/EPD | 1.36 | 1.50 | 2.26 | 1.41 | 1.14 | 0.93 | 0.86 | 0.90 |
| |(R4-R1)/(R4+R1)| | 0.65 | 0.45 | 2.29 | 1.84 | 0.51 | 0.12 | 0.28 | 0.28 |
| TTP/EPD | 1.02 | 1.54 | 1.23 | 0.83 | 0.29 | 0.27 | 0.25 | 0.11 |
| |f2/fTP| | 0.52 | 0.22 | 0.08 | 0.26 | 0.08 | 0.49 | 0.15 | 0.14 |
| f/(CTTP+TTP) | 1.78 | 1.64 | 1.22 | 1.20 | 2.03 | 3.16 | 4.96 | 3.31 |
| CTTP/CT2 | 0.39 | 0.26 | 1.13 | 3.57 | 2.67 | 1.80 | 1.00 | 3.57 |
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 utility model range involved in the application, however it is not limited to made of the specific combination of above-mentioned technical characteristic
Technical solution, at the same should also cover do not depart from the utility model design in the case where, by above-mentioned technical characteristic or its be equal
Feature carries out any combination and other technical solutions for being formed.Such as features described above and (but being not limited to) disclosed herein have
The technical solution for thering is the technical characteristic of similar functions to be replaced mutually and being formed.
Claims (30)
1. optical image microscope group sequentially includes covering lens and lens group by object side to image side along optical axis, which is characterized in that
The covering lens have positive light coke or negative power, and object side is plane；
The lens group successively includes: by object side to image side
The first lens with positive light coke；
The second lens with negative power；And
Multiple subsequent lens
Wherein, meet between the effective focal length f of the optical image microscope group and the effective focal length f1 of first lens: 0.5 < f/
f1<1.5。
2. optical image microscope group according to claim 1, which is characterized in that the effective focal length f of the optical image microscope group
With the effective focal length f of the covering lensTPBetween meet: | f/fTP|<0.5。
3. optical image microscope group according to claim 1, which is characterized in that the effective focal length f2 of second lens and institute
State the effective focal length f of covering lensTPBetween meet: 0 < | f2/fTP|<1。
4. optical image microscope group according to any one of claim 1-3, which is characterized in that the optical image group has
Imitate the radius of curvature R of the image side surface of focal length f and the covering lensTP2Between meet: | f/RTP2|<1。
5. optical image microscope group according to any one of claim 1-3, which is characterized in that the optical image microscope group
Meet between effective focal length f and the effective focal length f2 of second lens: -1 < f/f2 < 0.
6. optical image microscope group according to any one of claim 1-3, which is characterized in that the object side of the covering lens
Effective half bore D in faceTP1Meet between the Entry pupil diameters EPD of the optical image microscope group: 0.5 < DTP1/EPD<2.5。
7. optical image microscope group according to any one of claim 1-3, which is characterized in that the image side of second lens
Meet between the radius of curvature R 1 of the object side of the radius of curvature R 4 in face and first lens: | (R4-R1)/(R4+R1) | <
2.5。
8. optical image microscope group according to any one of claim 1-3, which is characterized in that covering lens and described
Airspace T of first lens on the optical axisTPMeet between the Entry pupil diameters EPD of the optical image microscope group: 0 <
TTP/EPD<1.6。
9. optical image microscope group according to any one of claim 1-3, which is characterized in that meet conditional: 1 < f/
(CTTP+TTP) < 5,
Wherein, f is the effective focal length of the optical image microscope group；
CTTPFor the center thickness of the covering lens；And
TTPThe airspace of the covering lens and first lens on the optical axis.
10. optical image microscope group according to any one of claim 1-3, which is characterized in that in the covering lens
Heart thickness CTTPMeet between the center thickness CT2 of second lens: 0 < CTTP/CT2<4。
11. optical image microscope group sequentially includes covering lens and lens group by object side to image side along optical axis, which is characterized in that
The covering lens have positive light coke or negative power, and object side is plane；
The lens group successively includes: by object side to image side
The first lens with positive light coke；
The second lens with negative power；And
Multiple subsequent lens,
Wherein, the effective focal length f of the effective focal length f2 of second lens and the covering lensTPBetween meet: 0 < | f2/fTP|
<1。
12. optical image microscope group according to claim 11, which is characterized in that the effective focal length of the optical image microscope group
The effective focal length f of f and the covering lensTPBetween meet: | f/fTP|<0.5。
13. optical image microscope group according to claim 12, which is characterized in that the effective focal length of the optical image microscope group
Meet between f and the effective focal length f1 of first lens: 0.5 < f/f1 < 1.5.
14. optical image microscope group described in any one of 1-13 according to claim 1, which is characterized in that the optical image group
Effective focal length f and it is described covering lens image side surface radius of curvature RTP2Between meet: | f/RTP2|<1。
15. optical image microscope group described in any one of 1-13 according to claim 1, which is characterized in that the optical image lens
Meet between the effective focal length f of group and the effective focal length f2 of second lens: -1 < f/f2 < 0.
16. optical image microscope group described in any one of 1-13 according to claim 1, which is characterized in that the covering lens
Effective half bore D of object sideTP1Meet between the Entry pupil diameters EPD of the optical image microscope group: 0.5 < DTP1/EPD<2.5。
17. optical image microscope group described in any one of 1-13 according to claim 1, which is characterized in that second lens
Meet between the radius of curvature R 1 of the object side of the radius of curvature R 4 of image side surface and first lens: | (R4-R1)/(R4+R1)
|<2.5。
18. optical image microscope group described in any one of 1-13 according to claim 1, which is characterized in that the covering lens and
Airspace T of first lens on the optical axisTPMeet between the Entry pupil diameters EPD of the optical image microscope group: 0
<TTP/EPD<1.6。
19. optical image microscope group described in any one of 1-13 according to claim 1, which is characterized in that meet conditional: 1 < f/
(CTTP+TTP) < 5,
Wherein, f is the effective focal length of the optical image microscope group；
CTTPFor the center thickness of the covering lens；And
TTPThe airspace of the covering lens and first lens on the optical axis.
20. optical image microscope group described in any one of 1-13 according to claim 1, which is characterized in that the covering lens
Center thickness CTTPMeet between the center thickness CT2 of second lens: 0 < CTTP/CT2<4。
21. optical image microscope group sequentially includes covering lens and lens group by object side to image side along optical axis, which is characterized in that
The covering lens have positive light coke or negative power, and object side is plane；
The lens group successively includes: by object side to image side
The first lens with positive light coke；
The second lens with negative power；And
Multiple subsequent lens,
Wherein, effective half bore D of the object side of the covering lensTP1With the Entry pupil diameters EPD of the optical image microscope group it
Between meet: 0.5 < DTP1/EPD<2.5。
22. optical image microscope group according to claim 21, which is characterized in that the effective focal length of the optical image microscope group
The effective focal length f of f and the covering lensTPBetween meet: | f/fTP|<0.5。
23. optical image microscope group according to claim 21, which is characterized in that the effective focal length f2 of second lens with
The effective focal length f of the covering lensTPBetween meet: 0 < | f2/fTP|<1。
24. the optical image microscope group according to any one of claim 21-23, which is characterized in that the optical image group
Effective focal length f and it is described covering lens image side surface radius of curvature RTP2Between meet: | f/RTP2|<1。
25. the optical image microscope group according to any one of claim 21-23, which is characterized in that the optical image lens
Meet between the effective focal length f of group and the effective focal length f2 of second lens: -1 < f/f2 < 0.
26. optical image microscope group according to claim 25, which is characterized in that the effective focal length of the optical image microscope group
Meet between f and the effective focal length f1 of first lens: 0.5 < f/f1 < 1.5.
27. the optical image microscope group according to any one of claim 21-23, which is characterized in that second lens
Meet between the radius of curvature R 1 of the object side of the radius of curvature R 4 of image side surface and first lens: | (R4-R1)/(R4+R1)
|<2.5。
28. the optical image microscope group according to any one of claim 21-23, which is characterized in that the covering lens and
Airspace T of first lens on the optical axisTPMeet between the Entry pupil diameters EPD of the optical image microscope group: 0
<TTP/EPD<1.6。
29. the optical image microscope group according to any one of claim 21-23, which is characterized in that meet conditional: 1 < f/
(CTTP+TTP) < 5,
Wherein, f is the effective focal length of the optical image microscope group；
CTTPFor the center thickness of the covering lens；And
TTPThe airspace of the covering lens and first lens on the optical axis.
30. the optical image microscope group according to any one of claim 21-23, which is characterized in that the covering lens
Center thickness CTTPMeet between the center thickness CT2 of second lens: 0 < CTTP/CT2<4。
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