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CN108459398A - Optical image microscope group - Google Patents

Optical image microscope group Download PDF

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Publication number
CN108459398A
CN108459398A CN201810471683.7A CN201810471683A CN108459398A CN 108459398 A CN108459398 A CN 108459398A CN 201810471683 A CN201810471683 A CN 201810471683A CN 108459398 A CN108459398 A CN 108459398A
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CN
China
Prior art keywords
lens
optical image
microscope group
image microscope
object side
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Granted
Application number
CN201810471683.7A
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Chinese (zh)
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CN108459398B (en
Inventor
张晓辉
吕赛锋
李龙
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN201810471683.7A priority Critical patent/CN108459398B/en
Publication of CN108459398A publication Critical patent/CN108459398A/en
Priority to PCT/CN2019/077286 priority patent/WO2019218760A1/en
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Publication of CN108459398B publication Critical patent/CN108459398B/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

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 it is plane that covering lens, which can have positive light coke or negative power, object side,；Lens group may include thering is the first lens of positive light coke, the second lens with negative power and multiple subsequent lens successively 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

Optical image microscope group
Technical field
This application involves a kind of optical image microscope groups, more particularly, to a kind of light being made of to eight eyeglasses three pieces Learn image microscope group.
Background technology
By the lightening miniaturization tendency influence of mobile phone market so that be 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 is still difficult larger breakthrough. General mobile lens are all to carry out optically focused by first eyeglass of camera lens, and the protective glass before camera lens functions only as protection camera lens Effect.In order to meet the needs of market development, Image lens need to use less number of lenses as far as possible, shorten camera lens Overall length, but thus can be difficult to meet the needs of image quality.
Therefore, present applicant proposes one kind being applicable to portable electronic product, has and minimizes, is good at image quality Amount, the optical system of low sensitivity characteristic.
Invention content
Technical solution provided by the present application solves the problems, such as techniques discussed above at least partly.
According to the one side 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 may include first lens with positive light coke by object side to image side, has negative light successively 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 effective focal length f of optical image group and the image side surface of 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 R4：|(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 can be met：1<f/(CTTP+TTP)<5, wherein f is optical image microscope group Effective focal length；CTTPTo cover the center thickness of 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 may include first lens with positive light coke by object side to image side, has and bear successively The second lens and multiple subsequent lens of focal power, wherein effective coke of the effective focal length f2 of the second lens and 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 may include first lens with positive light coke by object side to image side, has and bear successively 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。
By the optical image microscope group of above-mentioned configuration, can have miniaturization, high image quality, balance aberration, low sensitivity, At least one advantageous effect such as low cost.
Description of the drawings
By referring to the 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 illustrate 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 illustrate 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 illustrate 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 illustrate 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 illustrate 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 illustrate 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 illustrate chromatic curve on the axis of the optical image microscope group of embodiment 8, astigmatism curve, abnormal Varied curve and ratio chromatism, curve.
Specific implementation mode
Refer to the attached drawing is made more detailed description by the application in order to better understand to the various aspects of the application.It answers Understand, the description of the only illustrative embodiments to 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.It includes associated institute to state "and/or" 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, and does not indicate that 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 convenience 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 combination thereof.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 the meaning consistent with their meanings 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 that the lens surface is extremely convex surface less than near axis area；If lens surface is concave surface and does not define the concave surface position, Indicate that the lens surface is extremely concave surface less than near axis area.Herein, it is known as object near the surface of object in each lens Side is known as image side surface in each lens near the surface of imaging surface.
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.
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, it can further meet 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 coordinate other lenses that can preferably optimize aberration.
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, it can further meet 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 controlling 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, it can further meet 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 It obtains light smooth to collect, avoids 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<DTP1/EPD<2.5, specifically, it can further meet 0.86≤DTP1/EPD≤2.26.Ball For face lens in the case of 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 spherical lens bore in the case where radius of curvature determines will be bigger, to increase Skill difficulty of processing is processed, which can also have effects that reduce processing cost.
In the exemplary embodiment, the radius of curvature of the effective focal length f of optical image group and the image side surface of covering lens RTP2Between can meet：|f/RTP2|<1, specifically, it can further meet 0.06≤| f/RTP2|≤0.55.The conditional can guarantee The ratio of the radius of curvature and system focal length that cover lens image side surface is in a certain range so that off-axis ray has smaller 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, it can further meet -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 It can meet between rate radius R1：|(R4-R1)/(R4+R1)|<2.5, specifically, it can further meet 0.12≤| (R4-R1)/ (R4+R1)|≤2.29.It may make light that there is the smaller angle of divergence in suitable range conditional control, be conducive to System compact designs；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<TTP/EPD<1.6, specifically, it can further meet 0.11≤TTP/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 centre of equilibrium visual field with the imaging gap of visual field outside axis to system progress curvature of field optimization in suitable range.
In the exemplary embodiment, conditional can be met：1<f/(CTTP+TTP)<5, specifically, can further it meet 1.20≤f/(CTTP+TTP)≤4.96, wherein f is the effective focal length of optical image microscope group；CTTPTo cover the center thickness of 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<CTTP/CT2<4, specifically, it can further meet 0.26≤CTTP/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.Pass through each power of lens of reasonable distribution, the center thickness of face type, each lens 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 minute 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, the collective effect between the addition of new lens and at present gradual ripe glass lens processing technology, 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 applied to the camera system of more 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 the optical image microscope group for being applicable to the above embodiment is further described with reference to the accompanying drawings.
Embodiment 1
Referring to Fig. 1 to Fig. 2 D descriptions 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, it is plane that covering lens E1, which has positive light coke, object side S1,；First lens E2 has just Focal power；And second lens E3 have negative power.
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.It may include thering is object side S7's and image side surface S8 according to the optical image microscope group of embodiment 1 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, by the focal length of each eyeglass of reasonable distribution and face type and selecting to close Suitable material ensures 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, paraxial curvature c is the inverse of 1 mean curvature radius R of upper table)；K be circular cone coefficient ( It has been provided in upper table 1)；Ai is the correction factor of aspherical i-th-th ranks.The following table 2, which is shown, can be used for each minute 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 covering lens E1 to distance TTLs of the imaging surface S9 on optical axis of optical image microscope group is (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 of optical image microscope group and covering lens E1TPBetween 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 Ts 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 effective focal length f of the optical image group and image side surface S2 of 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 covering lens E1TP1With 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；CTTPTo cover the center thickness of 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 covering lens E1TPBetween 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 show 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 show the distortion curve of the optical image microscope group of embodiment 1, indicate Distortion sizes values in the case of different visual angles.Fig. 2 D show the ratio chromatism, curve of the optical image microscope group of embodiment 1, table Show deviation of the light via 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 realize 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 minute surface etc., the optical image microscope group described in the present embodiment 2 and following embodiment and reality The arrangement for applying the 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, it is plane that covering lens E1, which has negative power, object side S1,；First lens E2 has just Focal power；And second lens E3 have negative power.
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.It may include thering is object side S7's and image side surface S8 according to the optical image microscope group of embodiment 2 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, the effective focal length f of optical image microscope group, covering lens E1 object side S1 to optical image Distance TTLs (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 show chromatic curve on the axis of the optical image microscope group of embodiment 2, indicate the light warp of different wave length Deviateed by the converging focal point after optical image microscope group.Fig. 4 B show 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 show the distortion curve of the optical image microscope group of embodiment 2, indicate Distortion sizes values in the case of different visual angles.Fig. 4 D show the ratio chromatism, curve of the optical image microscope group of embodiment 2, table Show deviation of the light via 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 realize 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, it is plane that covering lens E1, which has positive light coke, object side S1,；First lens E2 has just Focal power；Second lens E3 has negative power；And the third lens E4 has positive light coke.
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.It may include with object side S9 and image side surface S10 according to the optical image microscope group of embodiment 3 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, the effective focal length f of optical image microscope group, covering lens E1 object side S1 to optical image Distance TTLs (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 show chromatic curve on the axis of the optical image microscope group of embodiment 3, indicate the light warp of different wave length Deviateed by the converging focal point after optical image microscope group.Fig. 6 B show 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 show the distortion curve of the optical image microscope group of embodiment 3, indicate Distortion sizes values in the case of different visual angles.Fig. 6 D show the ratio chromatism, curve of the optical image microscope group of embodiment 3, table Show deviation of the light via 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 realize 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, it is plane that covering lens E1, which has negative power, object side S1,；First lens E2 has just Focal power；Second lens E3 has negative power；And the third lens E4 has positive light coke.
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.It may include with object side S9 and image side surface S10 according to the optical image microscope group of embodiment 4 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, the effective focal length f of optical image microscope group, covering lens E1 object side S1 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 show chromatic curve on the axis of the optical image microscope group of embodiment 4, indicate the light warp of different wave length Deviateed by the converging focal point after optical image microscope group.Fig. 8 B show 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 show the distortion curve of the optical image microscope group of embodiment 4, indicate Distortion sizes values in the case of different visual angles.Fig. 8 D show the ratio chromatism, curve of the optical image microscope group of embodiment 4, table Show deviation of the light via 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 realize 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, it is plane that covering lens E1, which has negative power, object side S1,；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 there is negative light focus Degree.
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.It may include with object side S11 and image side surface S12 according to the optical image microscope group of embodiment 5 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, the effective focal length f of optical image microscope group, covering lens E1 object side S1 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 show chromatic curve on the axis of the optical image microscope group of embodiment 5, indicate the light warp of different wave length Deviateed by the converging focal point after optical image microscope group.Figure 10 B show 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 show the distortion curve of the optical image microscope group of embodiment 5, Indicate the distortion sizes values in the case of different visual angles.Figure 10 D show that the ratio chromatism, of the optical image microscope group of embodiment 5 is bent Line indicates deviation of the light via 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 the optical image microscope group given by embodiment 5 can realize 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, it is plane that covering lens E1, which has negative power, object side S1,；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.
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.It may include with object side S13 and image side surface S14 according to the optical image microscope group of embodiment 6 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, the effective focal length f of optical image microscope group, covering lens E1 object side S1 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 show chromatic curve on the axis of the optical image microscope group of embodiment 6, indicate the light warp of different wave length Deviateed by the converging focal point after optical image microscope group.Figure 12 B show 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 show the distortion curve of the optical image microscope group of embodiment 6, Indicate the distortion sizes values in the case of different visual angles.Figure 12 D show that the ratio chromatism, of the optical image microscope group of embodiment 6 is bent Line indicates deviation of the light via 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 the optical image microscope group given by embodiment 6 can realize 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, it is plane that covering lens E1, which has negative power, object side S1,；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.
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.It may include with object side S15 and image side surface S16 according to the optical image microscope group of embodiment 7 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, the effective focal length f of optical image microscope group, covering lens E1 object side S1 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 show chromatic curve on the axis of the optical image microscope group of embodiment 7, indicate the light warp of different wave length Deviateed by the converging focal point after optical image microscope group.Figure 14 B show 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 show the distortion curve of the optical image microscope group of embodiment 7, Indicate the distortion sizes values in the case of different visual angles.Figure 14 D show that the ratio chromatism, of the optical image microscope group of embodiment 7 is bent Line indicates deviation of the light via 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 the optical image microscope group given by embodiment 7 can realize 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, it is plane that covering lens E1, which has negative power, object side S1,；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.
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.It may include with object side S17 and image side surface S18 according to the optical image microscope group of embodiment 8 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, the effective focal length f of optical image microscope group, covering lens E1 object side S1 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 show chromatic curve on the axis of the optical image microscope group of embodiment 8, indicate the light warp of different wave length Deviateed by the converging focal point after optical image microscope group.Figure 16 B show 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 show the distortion curve of the optical image microscope group of embodiment 8, Indicate the distortion sizes values in the case of different visual angles.Figure 16 D show that the ratio chromatism, of the optical image microscope group of embodiment 8 is bent Line indicates deviation of the light via 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 the optical image microscope group given by embodiment 8 can realize 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.People in the art Member 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 Other technical solutions of arbitrary combination and formation.Such as features described above has similar work(with (but not limited to) disclosed herein Can technical characteristic replaced mutually and the technical solution that is formed.

Claims (12)

1. optical image microscope group, along optical axis by object side to image side sequentially including covering lens and lens group, which is characterized in that
It is plane that the covering lens, which have positive light coke or negative power, object side,；
The lens group includes successively 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 focal length f and the image side surface of 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, along optical axis by object side to image side sequentially including covering lens and lens group, which is characterized in that
It is plane that the covering lens, which have positive light coke or negative power, object side,；
The lens group includes successively 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, along optical axis by object side to image side sequentially including covering lens and lens group, which is characterized in that
It is plane that the covering lens, which have positive light coke or negative power, object side,；
The lens group includes successively 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。
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