CN209690602U - Electronic imaging apparatus - Google Patents
Electronic imaging apparatus Download PDFInfo
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- CN209690602U CN209690602U CN201920519790.2U CN201920519790U CN209690602U CN 209690602 U CN209690602 U CN 209690602U CN 201920519790 U CN201920519790 U CN 201920519790U CN 209690602 U CN209690602 U CN 209690602U
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Abstract
This application discloses a kind of electronic imaging apparatus, it includes the first image-taking device and the second image-taking device, wherein, first image-taking device includes the first lens system and the first electronics photosensitive element on the imaging surface of the first lens system, first lens system includes at least a piece of lens with focal power, and the lens in the lens with focal power of the first lens system near object side have positive light coke；Second image-taking device includes the second lens system and the second electronics photosensitive element on the imaging surface of the second lens system, second lens system includes at least a piece of lens with focal power, and the lens in the lens with focal power of the second lens system near object side have negative power；Wherein, the first image-taking device and the second image-taking device are located at the same side of electronic imaging apparatus, and the two has different field angles；And first lens system total effective focal length fTWith total effective focal length f of the second lens systemWMeet fT/fW> 3.3.
Description
Technical field
This application involves a kind of electronic imaging apparatus, more particularly, to a kind of electronics including two image-taking devices at
As device.
Background technique
With the continuous development of mobile phone industry, people increasingly deepen the degree of dependence of mobile phone, the imaging to mobile lens
Quality requirement is also higher and higher.Different from the random zoom of the profession camera shooting equipment such as slr camera, the optical zoom of mobile lens
Road walk very bumpy, traditional optical zoom is related to the Mechanical Moving of lens group, will lead to camera lens overall length increase, this
It is contradicted with the thinning trend of the portable device of such as mobile phone at present.
Thus, how on the basis of not influencing the thickness of portable device, in conjunction with the double camera shootings of current wide-angle and focal length
One of the problem of the problem of optical zoom of the head to take into account portable device is this field urgent need to resolve.
Utility model content
This application provides can at least solve or part solve the electronics of at least one above-mentioned disadvantage in the prior art at
As device, for example, the electronic imaging apparatus of dual camera progress high quality optical zoom can be made.
This application provides such a electronic imaging apparatus comprising the first image-taking device and the second image-taking device,
In, the first image-taking device may include the first lens system and the photosensitive member of the first electronics on the imaging surface of the first lens system
Part, the first lens system may include at least a piece of lens with focal power, and the lens near object side have positive light coke；
Second image-taking device may include the second lens system and the second electronics photosensitive element on the imaging surface of the second lens system,
Second lens system may include at least a piece of lens with focal power, and the lens near object side have negative power.Its
In, the first image-taking device and the second image-taking device are located at the same side of electronic imaging apparatus, and the first image-taking device takes with second
As device has different field angles.
In one embodiment, total effective focal length f of the first lens systemTWith total effective focal length of the second lens system
fWF can be metT/fW> 3.3.
In one embodiment, the maximum angle of half field-of view Semi-FOV of the first lens systemT20 ° of < Semi- can be met
FOVT25 ° of <.
In one embodiment, the maximum angle of half field-of view Semi-FOV of the second lens systemW50 ° of < Semi- can be met
FOVW55 ° of <.
In one embodiment, the object side of the lens near object side of the first lens system is to the first lens system
Distance TTL of the imaging surface on the optical axis of the first lens systemTWith total effective focal length f of the first lens systemTIt can meet
TTLT/fT< 0.9.
In one embodiment, on the imaging surface of the first lens system effective pixel area diagonal line length half
ImgHTWith total effective focal length f of the first lens systemTImgH can be metT/fT< 0.5.
In one embodiment, the object side of the lens near object side of the second lens system is to the second lens system
Distance TTL of the imaging surface on the optical axis of the second lens systemWWith effective pixel area on the imaging surface of the second lens system
The half ImgH of diagonal line lengthWTTL can be metW/ImgHW< 1.9.
In one embodiment, total effective focal length f of the second lens systemWWith the entrance pupil aperture of the second lens system
EPDWF can be metW/EPDW< 2.2.
In one embodiment, in the first lens system, there is airspace between two lens of arbitrary neighborhood；And
In the second lens system, there is airspace between two lens of arbitrary neighborhood.
In one embodiment, the first image-taking device and the second image-taking device are in vertical on the side of electronic imaging apparatus
To arrangement or it is transversely arranged.
In one embodiment, the first lens system is along the optical axis of the first lens system by object side to the first lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, the effective focal length f2 of the second lens of the first lens systemT, the first lens system the 5th lens effective focal length
f5TWith the effective focal length f4 of the 4th lens of the first lens systemT0.4 < (f2 can be metT+f5T)/f4T< 0.7.
In one embodiment, the first lens system is along the optical axis of the first lens system by object side to the first lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, the radius of curvature R 11 of the object side of the 6th lens of the first lens systemTWith the 6th lens of the first lens system
Image side surface radius of curvature R 12T0.8 < R11 can be metT/R12T< 1.3.
In one embodiment, the first lens system is along the optical axis of the first lens system by object side to the first lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, the first lens, the second lens of the first lens system, the third lens and the 4th lens combined focal length f1234T、
The radius of curvature R 1 of the object side of first lens of the first lens systemTWith the image side surface of the first lens of the first lens system
Radius of curvature R 2T0.3 < f1234 can be metT/(R1T+R2T) < 0.6.
In one embodiment, the first lens system is along the optical axis of the first lens system by object side to the first lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, the 5th lens of the first lens system have negative power, and object side is concave surface, and image side surface is concave surface.
In one embodiment, the first lens system is along the optical axis of the first lens system by object side to the first lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, at least four piece lens of the first lens of the first lens system into the 6th lens are the lens of plastic cement material.
In one embodiment, the second lens system is along the optical axis of the second lens system by object side to the second lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, total effective focal length f of the second lens systemWWith the effective focal length f5 of the 5th lens of the second lens systemWIt can meet
0.4≤fW/f5W≤1.8。
In one embodiment, the second lens system is along the optical axis of the second lens system by object side to the second lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, the radius of curvature R 2 of the image side surface of the first lens of the second lens systemWWith the first lens of the second lens system
Object side radius of curvature R 1W0.2 < R2 can be metW/R1W< 0.6.
In one embodiment, the second lens system is along the optical axis of the second lens system by object side to the second lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, the radius of curvature R 8 of the image side surface of the 4th lens of the second lens systemWThoroughly with the 4th in the second lens system
The radius of curvature R 7 of the object side of mirrorW0.3 < R8 can be metW/R7W< 1.0.
In one embodiment, the second lens system is along the optical axis of the second lens system by object side to the second lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, the image side surface of the second lens of the second lens system is convex surface；And second the 5th lens of lens system have
Positive light coke, object side are concave surface, and image side surface is convex surface.
In one embodiment, the second lens system is along the optical axis of the second lens system by object side to the second lens system
The imaging surface of system is sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.
Further, at least four piece lens of the first lens of the second lens system into the 6th lens are the lens of plastic cement material.
The application takes by the way that two different image-taking devices are arranged in electronic imaging apparatus, and by reasonable distribution two
As in device each power of lens, face type, each lens center thickness and each lens between axis on spacing etc. so that
Above-mentioned electronic imaging apparatus at least has such the utility model has the advantages that can lead to while guaranteeing electronic imaging apparatus miniaturization
Cross the image effect for being used interchangeably to reach hybrid optical zoom of different capture modes.
Detailed description of the invention
In conjunction with attached drawing, by the detailed description of following non-limiting embodiment, other features of the application, purpose and excellent
Point will be apparent.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the first lens system according to the embodiment of the present application 1；
Fig. 2A to Fig. 2 D respectively illustrates chromatic curve on the axis of the first lens system of embodiment 1, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 3 shows the structural schematic diagram of the first lens system 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 first lens system of embodiment 2, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 5 shows the structural schematic diagram of the first lens system 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 first lens system of embodiment 3, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 7 shows the structural schematic diagram of the first lens system 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 first lens system of embodiment 4, astigmatism curve, distortion
Curve and ratio chromatism, curve；
Fig. 9 shows the structural schematic diagram of the second lens system 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 second lens system of embodiment 5, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 11 shows the structural schematic diagram of the second lens system 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 second lens system of embodiment 6, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 13 shows the structural schematic diagram of the second lens system 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 second lens system of embodiment 7, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 15 shows the structural schematic diagram of the second lens system according to the embodiment of the present application 8；
Figure 16 A to Figure 16 D respectively illustrates chromatic curve on the axis of the second lens system of embodiment 8, astigmatism curve, abnormal
Varied curve and ratio chromatism, curve；
Figure 17 and Figure 18 shows the schematic diagram of the different arrangement modes of the first and second image-taking devices according to the application.
Specific embodiment
Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers
Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way
Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute
Any and all combinations of one or more of list of items.
It should be noted that in the present specification, first, second, third, etc. statement is only used for a feature and another spy
Sign distinguishes, without indicating any restrictions to feature.Therefore, without departing substantially from teachings of the present application, hereinafter
The first lens discussed are also known as the second lens or the third lens, and the first image-taking device is also known as the second capture dress
It sets.
In the accompanying drawings, for ease of description, thickness, the size and shape of lens are slightly exaggerated.Specifically, attached drawing
Shown in spherical surface or aspherical shape be illustrated by way of example.That is, spherical surface or aspherical shape are not limited to attached drawing
Shown in spherical surface or aspherical shape.Attached drawing is merely illustrative and and non-critical drawn to scale.
Herein, near axis area refers to the region near optical axis.If lens surface is convex surface and does not define convex surface position
When setting, then it represents that the lens surface is convex surface near axis area is less than；If lens surface is concave surface and does not define the concave surface position
When, then it represents that the lens surface is concave surface near axis area is less than.Each lens are known as this thoroughly near the surface of subject
The object side of mirror, each lens are known as the image side surface of the lens near the surface of imaging surface.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
It indicates there is stated feature, element and/or component when using in bright book, but does not preclude the presence or addition of one or more
Other feature, component, assembly unit and/or their combination.In addition, ought the statement of such as at least one of " ... " appear in institute
When after the list of column feature, entire listed feature is modified, rather than modifies the individual component in list.In addition, when describing this
When the embodiment of application, " one or more embodiments of the application " are indicated using "available".Also, term " illustrative "
It is intended to refer to example or illustration.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with
The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words
Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and
It will not be explained with idealization or excessively formal sense, unless clear herein so limit.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The feature of the application, principle and other aspects are described in detail below.
Electronic imaging apparatus according to the application illustrative embodiments may include the first image-taking device and the second capture dress
It sets, wherein the first image-taking device includes the first lens system and the first sense electronics on the imaging surface of the first lens system
Optical element, the second image-taking device include that the second lens system and the second electronics on the imaging surface of the second lens system are photosensitive
Element.First lens system may include at least a piece of lens with focal power, and have positive light focus near the lens of object side
Degree.Second lens system may include at least a piece of lens with focal power, and have negative power near the lens of object side.
In the exemplary embodiment, the first image-taking device and the second image-taking device can be located at the same of electronic imaging apparatus
Side, so that the two can absorb the object at electronic imaging apparatus same side (for example, electronic imaging apparatus front or behind)
Body.
In the exemplary embodiment, the first image-taking device and the second image-taking device can have different field angles, for example,
The field angle of second image-taking device can be smaller than the field angle of the first image-taking device.In the exemplary embodiment, the first capture
Device can have focal length characteristic, and the second image-taking device can have wide-angle characteristic, and the two collocation constitutes wide-angle and focal length pair takes the photograph mirror
Thus head can be used interchangeably to reach hybrid optical zoom by two kinds of image-taking device in electronic imaging apparatus
Effect facilitates the development for pushing the lossless zoom technology of the electronic imaging apparatus of such as mobile phone.In the exemplary embodiment,
The electronic imaging apparatus of the application can meet 20 ° of < Semi-FOV of conditionalT25 ° and 50 ° < Semi-FOV of <W55 ° of <, wherein
Semi-FOVTFor the maximum angle of half field-of view of the first lens system, Semi-FOVWFor the maximum angle of half field-of view of the second lens system.More
Specifically, Semi-FOVT20 ° of < Semi-FOV can further be metT23 ° of <, such as 20.8 °≤Semi-FOVT≤ 21.3 °,
Semi-FOVW51 ° of < Semi-FOV can further be metW53 ° of <, such as 52.0 °≤Semi-FOVW≤52.3°.Rationally control
The field angle of first lens system, it is ensured that the peripheral field resolution ratio with higher in vista shot, it is also ensured that system
Relative luminance with higher；Under the premise of guaranteeing camera lens miniaturization, by controlling the field angle of the second lens system, can have
Effect avoids the problem that the aberration of peripheral field is excessive and illumination is relatively low, guarantees that electronic imaging apparatus can be in wider field angle
It is interior that there is excellent image quality.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet conditional fT/fW> 3.3, wherein fT
For total effective focal length of the first lens system, fWFor total effective focal length of the second lens system.More specifically, the table that see below
3 and table 9, select fTThe first lens system and f of=6.75mmWThe such combination of the second lens system of=1.99mm, may make
fTAnd fWF can further be metT/fW≥3.39.Meet conditional fT/fW> 3.3 can be such that the combined variable zoom lens of the application have
There are high zoom ratios, while also ensuring its slimming, more imaging demands in the market can be met with this.
In the exemplary embodiment, the first image-taking device and the second image-taking device can be in the sides of electronic imaging apparatus
Upper is in longitudinal arrangement or transversely arranged.By longitudinal arrangement or transversely arranged keep both first and second image-taking devices adjacent each other
Closely, that the chip layout being placed in inside electronic imaging apparatus can on the one hand obtained is more regular, it is easier to the arrangement of internal element
And wiring；And on the other hand it can increase aesthetics in appearance, and user's gripping device of being more convenient for is taken pictures without making
User excessively considers whether to have blocked a certain camera because grip is improper.It should be understood that " longitudinal arrangement " is appreciated that
It is in relative to the use direction of electronic imaging apparatus for the first image-taking device A as shown in Figure 17 and the second image-taking device B
Be arranged above and below mode, and " transversely arranged " can be regarded as the first image-taking device A as shown in Figure 18 and the second image-taking device B
Use direction relative to electronic imaging apparatus is in left-right situs mode.Meanwhile it will also be appreciated that the first image-taking device and
The arrangement mode of two image-taking devices is without being limited thereto, and relative position can need to be adjusted according to actual design.
In the exemplary embodiment, electronic imaging apparatus for example can be the independent imaging equipment of such as digital camera,
It is also possible to the imaging device being integrated on the mobile electronic devices such as mobile phone.First image-taking device or the second image-taking device institute
The electronics photosensitive element of carrying can be photosensitive coupling element (CCD) or Complimentary Metal-Oxide semiconductor element (CMOS).
Below by be suitable for according to the first lens system of the electronic imaging apparatus of the application and the second lens system into
Row detailed description.
(1) first lens system
The first lens system according to the application may include at least a piece of lens with focal power, and near object side
Lens have positive light coke.For example, the first lens system may include six lens with focal power, that is, the first lens, second
Lens, the third lens, the 4th lens, the 5th lens and the 6th lens, this six-element lens along optical axis by object side to image side sequentially
Arrangement.Making the lens (that is, first lens) near object side of the first lens system has positive light coke, is conducive to whole system
Focal power distribution, avoid the concentrations of focal power, while facilitating the first lens system balance chromatic longitudiinal aberration and lateral chromatism
Difference.
In the exemplary embodiment, the second lens in the first lens system can have negative power, and object side can
For convex surface, image side surface can be concave surface.
In the exemplary embodiment, the object side of the third lens in the first lens system can be convex surface, and image side surface can
For concave surface.
In the exemplary embodiment, the 4th lens in the first lens system can have negative power, and object side can
For convex surface, image side surface can be concave surface.
In the exemplary embodiment, the 5th lens in the first lens system can have negative power, and object side can
For concave surface, image side surface can be concave surface.By the 5th lens design of the first lens system at negative power, can be effectively corrected
Major aberration that one lens are generated to the 4th lens；Its object side and image side surface are designed to concave surface, can be made it have more preferable
Refractive power, be incident to the light of the first lens system can in bigger image planes, and can have lesser chief ray angle
It (CRA), thus can preferably matching system chip.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet conditional TTLT/fT< 0.9, wherein
TTLTFor the first lens system the first lens object side to the first lens system imaging surface the first lens system light
Distance on axis, fTFor total effective focal length of the first lens system.More specifically, TTLTAnd fT0.8 < can further be met
TTLT/fT< 0.9, such as 0.83≤TTLT/fT≤0.85.Meet conditional TTLT/fT< 0.9 can meet in camera lens overall length
In the case where topology requirement, total effective focal length of the first lens system is elongated as much as possible, improves the optics of electronic imaging apparatus
Zoom magnification.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet 0.4 < (f2 of conditionalT+f5T)/f4T
< 0.7, wherein f2TFor the effective focal length of the second lens of the first lens system, f5TFor the 5th lens of the first lens system
Effective focal length, f4TFor the effective focal length of the 4th lens of the first lens system.More specifically, f2T、f5TAnd f4TCan further it expire
0.46≤(f2 of footT+f5T)/f4T≤0.65.Meet 0.4 < (f2 of conditionalT+f5T)/f4T< 0.7 can reasonably distribute
In one lens system thus the second lens, the 4th lens and the 5th power of lens may be used so as to reduce the deflection angle of light
The sensibility of the first lens system is reduced, the optical distortion of the first lens system can be also reduced, improves the relative luminance at edge.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet conditional ImgHT/fT< 0.5, wherein
ImgHTFor the half of effective pixel area diagonal line length on the imaging surface of the first lens system, fTFor always having for the first lens system
Imitate focal length.More specifically, ImgHTAnd fT0.3 < ImgH can further be metT/fT< 0.5, such as 0.39≤ImgHT/fT≤
0.40.Meet conditional ImgHT/fT< 0.5 can effectively promote taking the photograph more than increasing the times magnification of shooting for the first lens system
Rate improves the image quality of electronic imaging apparatus.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet 0.8 < R11 of conditionalT/R12T<
1.3, wherein R11TFor the radius of curvature of the object side of the 6th lens of the first lens system, R12TIt is the of the first lens system
The radius of curvature of the image side surface of six lens.More specifically, R11TAnd R12T0.93≤R11 can further be metT/R12T≤1.22。
Meet 0.8 < R11 of conditionalT/R12T< 1.3 can optimize the curvature of the 6th lens of the first lens system, and can drop
Color difference on the axis of this low the first lens system, while optical-modulation transfer function (MTF) value of the outer visual field of axis also can be improved, meet
Higher imaging requirements.Optionally, the object side of the 6th lens of the first lens system can be concave surface, and image side surface can be convex surface.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet 0.3 < f1234 of conditionalT/(R1T+
R2T) < 0.6, wherein f1234TFor the first lens of the first lens system, the second lens, the third lens and the 4th lens group
Complex focus, R1TFor the radius of curvature of the object side of the first lens of the first lens system, R2TFirst for the first lens system is saturating
The radius of curvature of the image side surface of mirror.More specifically, f1234T、R1TAnd R2T0.41≤f1234 can further be metT/(R1T+R2T)
≤0.44.Meet 0.3 < f1234 of conditionalT/(R1T+R2T) < 0.6, total effective coke of the first lens system can be effectively increased
Away from, and can the first power of lens of reasonable distribution, reduce actual parts processing susceptibility.Optionally, the first lens system
The object side of first lens of system can be convex surface, and image side surface can be concave surface.
In the exemplary embodiment, at least four piece lens of the first lens in the first lens system into the 6th lens
It can be plastic cement material.On the basis of considering image quality, plastic material is mostly used to be more conducive to the forming and processing of lens,
Mismachining tolerance is reduced, control system cost is conducive to large batch of manufacture production.
In the exemplary embodiment, in the first lens system, there can be airspace between two lens of arbitrary neighborhood.
Make that there is a certain amount of airspace between adjacent lens, it is ensured that adjacent lens will not that in the machining tolerance of eyeglass
Thus this contact can avoid eyeglass abrasion or pressure break.
In the exemplary embodiment, above-mentioned first lens system may also include at least one diaphragm.Diaphragm can be according to need
Place in place is set, such as is arranged between object side and the first lens.Optionally, above-mentioned first lens system can also wrap
Include the optical filter for correcting color error ratio and/or the protection glass for protecting the photosensitive element being located on imaging surface.
Multi-disc eyeglass, such as described above six can be used according to the first lens system of the above embodiment of the application
Piece.By each power of lens of reasonable distribution, face type, each lens center thickness and each lens between axis on spacing
Deng, can effectively reduce the first lens system volume, reduce the first lens system susceptibility and improve the first lens system
Machinability so that the first lens system be more advantageous to produce and process and be applicable in portable electronic imaging device.
In presently filed embodiment, at least one of mirror surface of each lens in the first lens system is aspherical
Mirror surface, that is, the first lens, the second lens, the third lens, the 4th lens, the 5th lens and each lens in the 6th lens
At least one of object side and image side surface are aspherical mirror.The characteristics of non-spherical lens, is: all from lens centre to lens
Side, curvature are consecutive variations.Have the spherical lens of constant curvature different from from lens centre to lens perimeter, it is aspherical
Mirror has more preferably radius of curvature characteristic, has the advantages that improve and distorts aberration and improvement astigmatic image error.Using non-spherical lens
Afterwards, the aberration occurred when imaging can be eliminated, as much as possible so as to improve image quality.Optionally, the first lens system
System the first lens, the second lens, the third lens, the 4th lens, the 5th lens and each lens in the 6th lens object side
Face and image side surface are aspherical mirror.
It is further retouched below with reference to multiple embodiments of the Fig. 1 to Fig. 8 D to the first lens system according to the application
It states.
Embodiment 1
Referring to Fig. 1 to Fig. 2 D description according to first lens system of the embodiment of the present application 1.Fig. 1 is shown according to this
Apply for the structural schematic diagram of the first lens system of embodiment 1.
As shown in Figure 1, the first lens system sequentially includes: the first lens E1, the second lens by object side to image side along optical axis
E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is concave surface.6th lens E6 has positive light coke,
Its object side S11 is concave surface, and image side surface S12 is convex surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Though be not shown, diaphragm can be set between object side and the first lens E1 with further promoted camera lens at image quality
Amount.
Table 1 shows the basic parameter table of the first lens system of embodiment 1, wherein radius of curvature, thickness and focal length
Unit is millimeter (mm).
Table 1
Wherein, fTFor total effective focal length of the first lens system, TTLTFor the object side of the first lens E1 of the first lens system
Imaging surface S15 distance on the optical axis of first lens system of the face S1 to the first lens system, ImgHTFor the first lens system
Imaging surface S15 on effective pixel area diagonal line length half, Semi-FOVTFor the maximum half field-of-view of the first lens system
Angle.
In embodiment 1, the object of any one lens of the first lens E1 of the first lens system into the 6th lens E6
Side and image side surface be it is aspherical, the face type x of each non-spherical lens is available but is not limited to following aspherical formula and is limited
It is fixed:
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 is circular cone coefficient；Ai
It is the correction factor of aspherical i-th-th rank.The following table 2 gives each aspheric that can be used for the first lens system according to embodiment 1
The high-order coefficient A of face mirror surface S1-S124、A6、A8、A10、A12、A14、A16、A18And A20。
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 6.7160E-03 | -1.3490E-02 | 6.6504E-02 | -1.6354E-01 | 2.4724E-01 | -2.2645E-01 | 1.2145E-01 | -3.4380E-02 | 3.7820E-03 |
| S2 | 1.2553E-02 | 1.2382E-02 | 1.3709E-02 | -5.4900E-02 | 3.6557E-02 | 3.3888E-02 | -7.3120E-02 | 4.3187E-02 | -8.6300E-03 |
| S3 | -4.4020E-02 | 1.5397E-01 | -3.3377E-01 | 1.1016E+00 | -2.6169E+00 | 3.8196E+00 | -3.3113E+00 | 1.5531E+00 | -3.0051E-01 |
| S4 | -6.9360E-02 | 2.9720E-01 | -1.0376E+00 | 3.2839E+00 | -2.9779E+00 | -9.4976E+00 | 3.0793E+01 | -3.3957E+01 | 1.3707E+01 |
| S5 | -2.7050E-02 | -4.9290E-02 | 7.9855E-01 | -3.5589E+00 | 1.3577E+01 | -3.2546E+01 | 4.5362E+01 | -3.4024E+01 | 1.0614E+01 |
| S6 | 4.1387E-02 | -1.1792E-01 | 4.4116E-01 | -4.7897E-01 | 4.5252E+00 | -1.9177E+01 | 3.7649E+01 | -3.6136E+01 | 1.3522E+01 |
| S7 | 4.9905E-02 | -3.3618E-01 | 5.5449E-01 | 6.1183E-01 | -3.2176E+00 | 5.4858E+00 | -4.3011E+00 | 1.0649E+00 | 1.5022E-01 |
| S8 | 1.9842E-02 | -4.1903E-01 | 2.1891E+00 | -9.2424E+00 | 2.6763E+01 | -4.8529E+01 | 5.2897E+01 | -3.1449E+01 | 7.7821E+00 |
| S9 | -2.5097E-01 | 1.5840E-01 | 1.0544E-02 | -3.2875E-01 | 4.1601E-01 | -2.5835E-01 | 5.6970E-02 | 1.3078E-02 | -5.5100E-03 |
| S10 | -2.0190E-01 | 2.1286E-01 | -1.3960E-01 | 1.6912E-02 | 4.4000E-02 | -4.1450E-02 | 1.7989E-02 | -3.8900E-03 | 3.2400E-04 |
| S11 | -2.9460E-02 | -4.0900E-03 | 3.7894E-02 | -2.5700E-02 | 8.5630E-03 | -1.6900E-03 | 2.0600E-04 | -1.5000E-05 | 4.8400E-07 |
| S12 | -4.0340E-02 | 7.9200E-05 | 6.7840E-03 | -6.6500E-03 | 5.1520E-03 | -2.0800E-03 | 4.3500E-04 | -4.6000E-05 | 1.9100E-06 |
Table 2
Fig. 2A shows chromatic curve on the axis of the first lens system of embodiment 1, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Fig. 2 B shows the astigmatism curve of the first lens system of embodiment 1, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 2 C shows the distortion curve of the first lens system of embodiment 1, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 2 D shows the ratio chromatism, curve of the first lens system of embodiment 1, indicates light warp
By the deviation of the different image heights after camera lens on imaging surface.According to fig. 2 A to Fig. 2 D it is found that given by embodiment 1 first thoroughly
Mirror system can be realized good image quality.
Embodiment 2
Referring to Fig. 3 to Fig. 4 D description according to first lens system of the embodiment of the present application 2.In the present embodiment and following
In embodiment, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application 2
The first lens system structural schematic diagram.
As shown in figure 3, the first lens system sequentially includes: the first lens E1, the second lens by object side to image side along optical axis
E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is concave surface.6th lens E6 has positive light coke,
Its object side S11 is concave surface, and image side surface S12 is convex surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Though be not shown, diaphragm can be set between object side and the first lens E1 with further promoted camera lens at image quality
Amount.
Table 3 shows the basic parameter table of the first lens system of embodiment 2, wherein radius of curvature, thickness and focal length
Unit is millimeter (mm).Table 4 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, wherein each aspheric
Face face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 3
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 6.4800E-03 | -1.2569E-02 | 6.5813E-02 | -1.7110E-01 | 2.6966E-01 | -2.5619E-01 | 1.4271E-01 | -4.2287E-02 | 4.9735E-03 |
| S2 | 1.2961E-02 | 1.2828E-02 | 9.8735E-03 | -3.7803E-02 | -6.4575E-03 | 9.7384E-02 | -1.2791E-01 | 6.8116E-02 | -1.3184E-02 |
| S3 | -4.5599E-02 | 1.6591E-01 | -3.6636E-01 | 1.1992E+00 | -2.8928E+00 | 4.2927E+00 | -3.7811E+00 | 1.8027E+00 | -3.5489E-01 |
| S4 | -7.6905E-02 | 4.2672E-01 | -2.2815E+00 | 1.0693E+01 | -2.9182E+01 | 4.6012E+01 | -3.8625E+01 | 1.3254E+01 | 2.3605E-01 |
| S5 | -4.2388E-02 | 1.0441E-01 | -2.8304E-01 | 2.1834E+00 | -6.4020E+00 | 1.0464E+01 | -9.9214E+00 | 4.7702E+00 | -7.6560E-01 |
| S6 | 3.2864E-02 | -1.3567E-01 | 9.4035E-01 | -2.8065E+00 | 8.1478E+00 | -1.6866E+01 | 2.2141E+01 | -1.6896E+01 | 5.6358E+00 |
| S7 | 7.7033E-02 | -5.0300E-01 | 1.3051E+00 | -2.6506E+00 | 4.9086E+00 | -6.1453E+00 | 4.7242E+00 | -2.1232E+00 | 4.3515E-01 |
| S8 | 6.1315E-02 | -2.8754E-01 | 2.7377E-01 | 3.0724E-01 | -9.8342E-01 | 1.0374E+00 | -2.9771E-01 | -2.2728E-01 | 1.2409E-01 |
| S9 | -1.5306E-01 | 1.6384E-01 | -4.5416E-01 | 6.3430E-01 | -6.2050E-01 | 4.1394E-01 | -1.8015E-01 | 4.7307E-02 | -5.6342E-03 |
| S10 | -9.9774E-02 | 1.5142E-01 | -2.8964E-01 | 2.9079E-01 | -1.7555E-01 | 6.3489E-02 | -1.2533E-02 | 1.0050E-03 | 6.8646E-06 |
| S11 | -6.1604E-02 | 9.2568E-02 | -7.3939E-02 | 3.7593E-02 | -1.2734E-02 | 2.8689E-03 | -4.1114E-04 | 3.3713E-05 | -1.1988E-06 |
| S12 | -6.5648E-02 | 3.6134E-02 | -2.0280E-02 | 6.8242E-03 | -7.2436E-04 | -2.0602E-04 | 7.4209E-05 | -8.8033E-06 | 3.7733E-07 |
Table 4
Fig. 4 A shows chromatic curve on the axis of the first lens system of embodiment 2, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Fig. 4 B shows the astigmatism curve of the first lens system of embodiment 2, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 4 C shows the distortion curve of the first lens system of embodiment 2, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 4 D shows the ratio chromatism, curve of the first lens system of embodiment 2, indicates light warp
By the deviation of the different image heights after camera lens on imaging surface.According to Fig. 4 A to Fig. 4 D it is found that given by embodiment 2 first thoroughly
Mirror system can be realized good image quality.
Embodiment 3
The first lens system according to the embodiment of the present application 3 is described referring to Fig. 5 to Fig. 6 D.Fig. 5 shows basis
The structural schematic diagram of first lens system of the embodiment of the present application 3.
As shown in figure 5, the first lens system sequentially includes: the first lens E1, the second lens by object side to image side along optical axis
E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is concave surface.6th lens E6 has positive light coke,
Its object side S11 is concave surface, and image side surface S12 is convex surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Though be not shown, diaphragm can be set between object side and the first lens E1 with further promoted camera lens at image quality
Amount.
Table 5 shows the basic parameter table of the first lens system of embodiment 3, wherein radius of curvature, thickness and focal length
Unit is millimeter (mm).Table 6 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each aspheric
Face face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 5
Table 6
Fig. 6 A shows chromatic curve on the axis of the first lens system of embodiment 3, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Fig. 6 B shows the astigmatism curve of the first lens system of embodiment 3, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 6 C shows the distortion curve of the first lens system of embodiment 3, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 6 D shows the ratio chromatism, curve of the first lens system of embodiment 3, indicates light warp
By the deviation of the different image heights after camera lens on imaging surface.According to Fig. 6 A to Fig. 6 D it is found that given by embodiment 3 first thoroughly
Mirror system can be realized good image quality.
Embodiment 4
The first lens system according to the embodiment of the present application 4 is described referring to Fig. 7 to Fig. 8 D.Fig. 7 shows basis
The structural schematic diagram of first lens system of the embodiment of the present application 4.
As shown in fig. 7, the first lens system sequentially includes: the first lens E1, the second lens by object side to image side along optical axis
E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is concave surface.6th lens E6 has positive light coke,
Its object side S11 is concave surface, and image side surface S12 is convex surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Though be not shown, diaphragm can be set between object side and the first lens E1 with further promoted camera lens at image quality
Amount.
Table 7 shows the basic parameter table of the first lens system of embodiment 4, wherein radius of curvature, thickness and focal length
Unit is millimeter (mm).Table 8 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, wherein each aspheric
Face face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 7
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 6.8310E-03 | -1.3350E-02 | 6.6675E-02 | -1.6405E-01 | 2.4743E-01 | -2.2586E-01 | 1.2079E-01 | -3.4120E-02 | 3.7410E-03 |
| S2 | 1.2498E-02 | 1.2395E-02 | 1.3554E-02 | -5.4380E-02 | 3.5910E-02 | 3.4189E-02 | -7.2970E-02 | 4.3019E-02 | -8.5900E-03 |
| S3 | -4.4190E-02 | 1.5422E-01 | -3.3610E-01 | 1.1198E+00 | -2.6753E+00 | 3.9224E+00 | -3.4128E+00 | 1.6062E+00 | -3.1194E-01 |
| S4 | -6.8200E-02 | 2.7797E-01 | -8.5582E-01 | 2.3192E+00 | 2.4715E-01 | -1.6356E+01 | 3.9833E+01 | -4.0666E+01 | 1.5849E+01 |
| S5 | -2.8010E-02 | -4.3460E-02 | 7.4265E-01 | -3.0449E+00 | 1.1401E+01 | -2.7519E+01 | 3.8824E+01 | -2.9577E+01 | 9.3915E+00 |
| S6 | 3.5374E-02 | -5.3610E-02 | -1.1906E-01 | 2.8622E+00 | -7.2976E+00 | 6.1962E+00 | 5.3666E+00 | -1.3944E+01 | 7.2010E+00 |
| S7 | 4.3539E-02 | -2.9119E-01 | 2.8706E-01 | 1.9143E+00 | -7.1050E+00 | 1.2729E+01 | -1.2473E+01 | 6.1060E+00 | -1.1474E+00 |
| S8 | 1.6076E-02 | -3.7053E-01 | 1.7946E+00 | -7.3827E+00 | 2.1561E+01 | -3.9686E+01 | 4.3986E+01 | -2.6572E+01 | 6.6661E+00 |
| S9 | -1.9939E-01 | 9.0724E-02 | 9.0106E-02 | -4.8351E-01 | 6.9199E-01 | -5.6109E-01 | 2.4811E-01 | -5.0900E-02 | 3.2270E-03 |
| S10 | -1.6234E-01 | 1.4609E-01 | -5.2640E-02 | -9.0430E-02 | 1.4573E-01 | -1.0506E-01 | 4.2339E-02 | -9.0500E-03 | 7.8800E-04 |
| S11 | -5.1010E-02 | 2.4819E-02 | 1.3295E-02 | -1.2750E-02 | 4.2550E-03 | -7.8000E-04 | 8.6300E-05 | -5.6000E-06 | 1.7100E-07 |
| S12 | -3.7890E-02 | -3.6400E-03 | 1.0956E-02 | -9.2300E-03 | 5.9000E-03 | -2.1400E-03 | 4.1900E-04 | -4.2000E-05 | 1.6700E-06 |
Table 8
Fig. 8 A shows chromatic curve on the axis of the first lens system of embodiment 4, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Fig. 8 B shows the astigmatism curve of the first lens system of embodiment 4, indicates meridian picture
Face bending and sagittal image surface bending.Fig. 8 C shows the distortion curve of the first lens system of embodiment 4, indicates different visual fields
The corresponding distortion sizes values in angle.Fig. 8 D shows the ratio chromatism, curve of the first lens system of embodiment 4, indicates light warp
By the deviation of the different image heights after camera lens on imaging surface.According to Fig. 8 A to Fig. 8 D it is found that given by embodiment 4 first thoroughly
Mirror system can be realized good image quality.
(2) second lens systems
The second lens system according to the application may include at least a piece of lens with focal power, and near object side
Lens have negative power.For example, the second lens system may include six lens with focal power, that is, the first lens, second
Lens, the third lens, the 4th lens, the 5th lens and the 6th lens, this six-element lens along optical axis by object side to image side sequentially
Arrangement.Making the lens (for example, first lens) near object side of the second lens system has negative power, it is possible to increase second thoroughly
The field angle of mirror system slows down light in the incident angle of the second lens, while can also reduce the bore of subsequent lens, facilitates
Maintain camera lens miniaturization.
In the exemplary embodiment, the image side surface of the second lens in the second lens system can be convex surface.Make second thoroughly
The image side surface of second lens of mirror system is convex surface, advantageously reduces the marginal distortion of the second lens system, and can be improved second
The edge relative luminance of lens system.
In the exemplary embodiment, the image side surface of the third lens in the second lens system can be convex surface.
In the exemplary embodiment, the 5th lens in the second lens system can have positive light coke, and object side can
For concave surface, image side surface can be convex surface.Making the 5th lens of the second lens system has positive light coke, can effectively correct balance first
The aberration that lens are generated to the 4th lens；By its object lateral layout at concave surface, facilitate thick by the meat in different pore size height
To correct color difference；And its image side surface is configured to convex surface, can effective divergent rays, so that the second lens system is possessed big image planes.
In the exemplary embodiment, the object side of the 6th lens in the second lens system can be convex surface, and image side surface can
For concave surface.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet 0.4≤f of conditionalW/f5W≤ 1.8,
In, fWFor total effective focal length of the second lens system, f5WFor the effective focal length of the 5th lens of the second lens system.More specifically
Ground, fWAnd f5W0.40≤f can further be metW/f5W≤1.79.Meet 0.4≤f of conditionalW/f5W≤ 1.8, second can be reduced
The optical distortion of lens system, and the refractive power of the 5th lens of the second lens system can be improved, enable the second lens system
The chief ray angle (CRA) of enough preferably matching chips.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet 0.2 < R2 of conditionalW/R1W< 0.6,
Wherein, R2WFor the radius of curvature of the image side surface of the first lens of the second lens system, R1WFor the first lens of the second lens system
Object side radius of curvature.More specifically, R2WAnd R1W0.39≤R2 can further be metW/R1W≤0.50.Meet conditional
0.2 < R2W/R1W< 0.6 can optimize the curvature of the first lens of the second lens system, enable the second lens system
The curvature of field and distortion are relatively easily balanced, the second lens system is made to obtain bigger field angle.Optionally, the of the second lens system
The object side of one lens can be convex surface, and image side surface can be concave surface.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet 0.3 < R8 of conditionalW/R7W< 1.0,
Wherein, R8WFor the radius of curvature of the image side surface of the 4th lens of the second lens system, R7WThoroughly for the 4th in the second lens system
The radius of curvature of the object side of mirror.More specifically, R8WAnd R7W0.40≤R8 can further be metW/R7W≤0.96.Meet condition
0.3 < R8 of formulaW/R7W< 1.0 can optimize the curvature of the 4th lens of the second lens system, to balance major aberration, receive
Contracting paraxial rays improves the mtf value of visual field on axis, improves image quality.Optionally, the object of the 4th lens of the second lens system
Side can be convex surface, and image side surface can be concave surface.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet conditional TTLW/ImgHW< 1.9,
In, TTLWFor the second lens system the first lens object side to the second lens system imaging surface in the second lens system
Distance on optical axis, ImgHWFor the half of effective pixel area diagonal line length on the imaging surface of the second lens system.More specifically
Ground, TTLWAnd ImgHW1.8 < TTL can further be metW/ImgHW< 1.9, such as 1.86≤TTLW/ImgHW≤1.88.Meet
Conditional TTLW/ImgHW< 1.9 can be effectively compressed the size of the second lens system, guarantee camera lens compact dimensioning characteristic.
In the exemplary embodiment, the electronic imaging apparatus of the application can meet conditional fW/EPDW< 2.2, wherein
fWFor total effective focal length of the second lens system, EPDWFor the entrance pupil aperture of the second lens system.More specifically, fWAnd EPDWExample
As can be further met fW/EPDW=2.19.Meet conditional fW/EPDW< 2.2 can make the second lens system have big light
Circle advantage enhances imaging effect of second lens system under the weaker environment of light, can also reduce the aberration of peripheral field.
In the exemplary embodiment, at least four piece lens of the first lens in the second lens system into the 6th lens
It can be plastic cement material.On the basis of considering image quality, plastic material is mostly used to be more conducive to the forming and processing of lens,
Mismachining tolerance is reduced, control system cost is conducive to large batch of manufacture production.
In the exemplary embodiment, in the second lens system, there can be airspace between two lens of arbitrary neighborhood.
Make that there is a certain amount of airspace between adjacent lens, it is ensured that adjacent lens will not that in the machining tolerance of eyeglass
Thus this contact can avoid eyeglass abrasion or pressure break.
In the exemplary embodiment, above-mentioned second lens system may also include at least one diaphragm.Diaphragm can be according to need
Place in place is set, such as is arranged between the first lens and the second lens.Optionally, above-mentioned second lens system is also
It may include the optical filter for correcting color error ratio and/or the protection glass for protecting the photosensitive element being located on imaging surface.
Multi-disc eyeglass, such as described above six can be used according to the second lens system of the above embodiment of the application
Piece.By each power of lens of reasonable distribution, face type, each lens center thickness and each lens between axis on spacing
Deng, can effectively reduce the second lens system volume, reduce the second lens system susceptibility and improve the second lens system
Machinability so that the second lens system be more advantageous to produce and process and be applicable in portable electronic imaging device.
In presently filed embodiment, at least one of mirror surface of each lens in the second lens system is aspherical
Mirror surface, that is, the first lens, the second lens, the third lens, the 4th lens, the 5th lens and each lens in the 6th lens
At least one of object side and image side surface are aspherical mirror.Optionally, the first lens of the second lens system, second thoroughly
Mirror, the third lens, the 4th lens, the object side of the 5th lens and each lens in the 6th lens and image side surface are aspherical
Mirror surface.
It is carried out further below with reference to multiple embodiments of the Fig. 9 to Figure 16 D to the second lens system according to the application
Description.
Embodiment 5
The second lens system according to the embodiment of the present application 5 is described referring to Fig. 9 to Figure 10 D.Fig. 9 shows basis
The structural schematic diagram of second lens system of the embodiment of the present application 5.
As shown in figure 9, the second lens system along optical axis by object side to image side sequentially include: the first lens E1, diaphragm STO,
Second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has negative power, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Table 9 shows the basic parameter table of the second lens system of embodiment 5, wherein radius of curvature, thickness and focal length
Unit is millimeter (mm).Table 10 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each non-
Spherical surface type can be limited by the formula (1) provided in above-described embodiment 1.
Table 9
Wherein, fWFor total effective focal length of the second lens system, TTLWFor the object side of the first lens E1 of the second lens system
Imaging surface S15 distance on the optical axis of second lens system of the face S1 to the second lens system, ImgHWFor the second lens system
Imaging surface S15 on effective pixel area diagonal line length half, Semi-FOVWFor the maximum half field-of-view of the second lens system
Angle.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 5.4435E-01 | -7.6902E-01 | 4.4887E+00 | -2.3375E+01 | 8.5487E+01 | -1.9711E+02 | 2.7343E+02 | -2.0671E+02 | 6.4785E+01 |
| S2 | 9.0867E-01 | -3.1443E+00 | 4.5817E+01 | -4.0839E+02 | 2.3283E+03 | -8.1653E+03 | 1.6980E+04 | -1.8837E+04 | 8.3864E+03 |
| S3 | -1.1352E-02 | -8.4646E-01 | 2.6268E+00 | -4.7747E+01 | 5.7529E+02 | -3.5383E+03 | 1.1442E+04 | -1.8250E+04 | 1.1301E+04 |
| S4 | 2.0082E-01 | -6.4434E+00 | 3.5422E+01 | -1.6339E+02 | 6.2954E+02 | -1.4978E+03 | 1.4806E+03 | 6.9119E+02 | -1.7659E+03 |
| S5 | 4.1001E-01 | -5.9762E+00 | 3.1068E+01 | -1.3937E+02 | 5.4351E+02 | -1.4321E+03 | 2.2607E+03 | -1.9341E+03 | 6.9136E+02 |
| S6 | 2.4015E-01 | -7.6926E-01 | -6.5678E+00 | 4.6908E+01 | -1.4427E+02 | 2.6767E+02 | -3.0617E+02 | 1.9535E+02 | -5.2494E+01 |
| S7 | 3.6458E-02 | -5.2828E-01 | -3.7058E+00 | 2.0771E+01 | -3.8891E+01 | 3.0573E+01 | -3.0739E+00 | -9.1068E+00 | 3.7496E+00 |
| S8 | -1.2516E-01 | 8.3790E-01 | -5.2405E+00 | 1.6313E+01 | -2.7884E+01 | 2.8407E+01 | -1.7457E+01 | 6.0445E+00 | -9.1860E-01 |
| S9 | 4.1197E-02 | -1.2020E-01 | -1.2263E-01 | 1.8495E+00 | -6.2113E+00 | 1.0459E+01 | -9.3324E+00 | 4.2328E+00 | -7.7343E-01 |
| S10 | -2.4302E-01 | 3.9499E-01 | -1.1703E+00 | 2.8122E+00 | -4.4827E+00 | 4.5693E+00 | -2.8781E+00 | 1.0226E+00 | -1.5541E-01 |
| S11 | -1.3085E-01 | -1.0954E-01 | 5.5772E-02 | 2.4917E-01 | -5.0760E-01 | 4.4187E-01 | -2.0721E-01 | 5.1402E-02 | -5.2889E-03 |
| S12 | -1.6712E-01 | 4.0358E-02 | 5.8398E-02 | -8.6606E-02 | 5.6456E-02 | -2.1456E-02 | 4.8842E-03 | -6.2008E-04 | 3.3923E-05 |
Table 10
Figure 10 A shows chromatic curve on the axis of the second lens system of embodiment 5, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Figure 10 B shows the astigmatism curve of the second lens system of embodiment 5, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 10 C shows the distortion curve of the second lens system of embodiment 5, indicates different
The corresponding distortion sizes values of field angle.Figure 10 D shows the ratio chromatism, curve of the second lens system of embodiment 5, indicates
Light via the different image heights after camera lens on imaging surface deviation.According to Figure 10 A to Figure 10 D it is found that given by embodiment 5
The second lens system can be realized good image quality.
Embodiment 6
The second lens system according to the embodiment of the present application 6 is described referring to Figure 11 to Figure 12 D.Figure 11 shows root
According to the structural schematic diagram of second lens system of the embodiment of the present application 6.
As shown in figure 11, the second lens system along optical axis by object side to image side sequentially include: the first lens E1, diaphragm STO,
Second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has negative power, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Concave surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Table 11 shows the basic parameter table of the second lens system of embodiment 6, wherein radius of curvature, thickness and focal length
Unit be millimeter (mm).Table 12 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 4.5692E-01 | -2.2390E-01 | -3.3064E-01 | 6.4406E+00 | -3.0008E+01 | 7.8737E+01 | -1.2130E+02 | 1.0389E+02 | -3.9358E+01 |
| S2 | 8.1730E-01 | -2.4023E+00 | 4.9767E+01 | -5.6709E+02 | 4.1736E+03 | -1.8946E+04 | 5.1758E+04 | -7.7072E+04 | 4.8064E+04 |
| S3 | -2.0830E-02 | -1.1740E+00 | 2.3890E+01 | -3.4175E+02 | 2.9962E+03 | -1.6516E+04 | 5.5220E+04 | -1.0205E+05 | 8.0309E+04 |
| S4 | 9.6683E-02 | -1.0748E+00 | 1.4183E+00 | -2.8737E+01 | 3.1653E+02 | -1.5396E+03 | 3.8832E+03 | -5.0602E+03 | 2.7463E+03 |
| S5 | 2.6893E-01 | -1.0409E+00 | -7.6131E+00 | 5.3704E+01 | -1.1480E+02 | -3.7305E+01 | 5.3751E+02 | -7.8690E+02 | 3.6777E+02 |
| S6 | -9.5685E-02 | 2.7388E+00 | -2.3848E+01 | 1.0199E+02 | -2.4975E+02 | 3.6044E+02 | -2.9824E+02 | 1.2674E+02 | -1.9850E+01 |
| S7 | -1.0405E-01 | -2.4986E-02 | -3.8517E+00 | 2.2389E+01 | -5.7310E+01 | 8.1943E+01 | -6.8770E+01 | 3.2326E+01 | -6.8616E+00 |
| S8 | -1.2869E-01 | 4.2753E-01 | -2.1849E+00 | 7.5182E+00 | -1.4812E+01 | 1.7539E+01 | -1.2421E+01 | 4.8513E+00 | -8.0562E-01 |
| S9 | 5.0143E-02 | -2.3685E-01 | 8.9591E-01 | -2.5538E+00 | 5.0760E+00 | -6.6336E+00 | 5.4303E+00 | -2.4769E+00 | 4.7351E-01 |
| S10 | -2.5933E-01 | 2.6130E-01 | -2.7831E-01 | 2.4627E-01 | -1.9167E-01 | 1.3230E-01 | -5.8436E-02 | 6.5903E-03 | 3.5647E-03 |
| S11 | -1.8737E-01 | 1.1285E-01 | -2.5708E-01 | 4.6634E-01 | -5.4579E-01 | 3.9930E-01 | -1.7738E-01 | 4.3594E-02 | -4.5007E-03 |
| S12 | -1.4827E-01 | 6.6642E-02 | -1.0587E-02 | -1.6257E-02 | 1.5505E-02 | -6.8324E-03 | 1.6938E-03 | -2.2751E-04 | 1.2964E-05 |
Table 12
Figure 12 A shows chromatic curve on the axis of the second lens system of embodiment 6, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Figure 12 B shows the astigmatism curve of the second lens system of embodiment 6, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 12 C shows the distortion curve of the second lens system of embodiment 6, indicates different
The corresponding distortion sizes values of field angle.Figure 12 D shows the ratio chromatism, curve of the second lens system of embodiment 6, indicates
Light via the different image heights after camera lens on imaging surface deviation.According to Figure 12 A to Figure 12 D it is found that given by embodiment 6
The second lens system can be realized good image quality.
Embodiment 7
The second lens system according to the embodiment of the present application 7 is described referring to Figure 13 to Figure 14 D.Figure 13 shows root
According to the structural schematic diagram of second lens system of the embodiment of the present application 7.
As shown in figure 13, the second lens system along optical axis by object side to image side sequentially include: the first lens E1, diaphragm STO,
Second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has negative power, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is
Concave surface, image side surface S6 are convex surface.4th lens E4 has positive light coke, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Table 13 shows the basic parameter table of the second lens system of embodiment 7, wherein radius of curvature, thickness and focal length
Unit be millimeter (mm).Table 14 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 7, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 13
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 3.9316E-01 | -1.6422E-01 | -4.0117E-01 | 4.6728E+00 | -1.9018E+01 | 4.5626E+01 | -6.5058E+01 | 5.1291E+01 | -1.7305E+01 |
| S2 | 7.5331E-01 | -9.7313E-01 | 1.9083E+01 | -1.3345E+02 | 2.8826E+02 | 2.7927E+03 | -2.1522E+04 | 5.8897E+04 | -5.8569E+04 |
| S3 | 4.4726E-02 | -2.4021E+00 | 5.3078E+01 | -7.3798E+02 | 6.3042E+03 | -3.3782E+04 | 1.0998E+05 | -1.9792E+05 | 1.5080E+05 |
| S4 | -1.3088E-01 | 8.2034E-01 | -7.7285E+00 | 1.3778E+01 | 4.8195E+00 | -3.0387E+00 | -1.5915E+02 | 3.4196E+02 | -1.8455E+02 |
| S5 | 2.4381E-02 | 1.8509E+00 | -1.4386E+01 | 4.9013E+01 | -1.5844E+02 | 4.7065E+02 | -8.9711E+02 | 9.1044E+02 | -3.7525E+02 |
| S6 | -1.2611E+00 | 1.0771E+01 | -5.5623E+01 | 2.0727E+02 | -5.7368E+02 | 1.1118E+03 | -1.3755E+03 | 9.5414E+02 | -2.7935E+02 |
| S7 | -4.1333E-02 | -2.3427E+00 | 1.1972E+01 | -3.4424E+01 | 5.9614E+01 | -5.4628E+01 | 1.3403E+01 | 1.5443E+01 | -9.6092E+00 |
| S8 | 3.2079E-01 | -3.2708E+00 | 1.2669E+01 | -2.9817E+01 | 4.6455E+01 | -4.7598E+01 | 3.0692E+01 | -1.1286E+01 | 1.8039E+00 |
| S9 | -7.4686E-02 | 9.7234E-01 | -4.5594E+00 | 1.1238E+01 | -1.6044E+01 | 1.3717E+01 | -6.6800E+00 | 1.5736E+00 | -1.0405E-01 |
| S10 | -3.4933E-01 | 6.8566E-01 | -1.6470E+00 | 3.0550E+00 | -4.0165E+00 | 3.5008E+00 | -1.8439E+00 | 5.1081E-01 | -5.1912E-02 |
| S11 | -1.6067E-01 | 5.5390E-02 | -3.9379E-01 | 9.4453E-01 | -1.2447E+00 | 1.0036E+00 | -4.8874E-01 | 1.3080E-01 | -1.4628E-02 |
| S12 | -5.4392E-02 | -1.1681E-01 | 1.9594E-01 | -1.7160E-01 | 9.5232E-02 | -3.4078E-02 | 7.5816E-03 | -9.5307E-04 | 5.1774E-05 |
Table 14
Figure 14 A shows chromatic curve on the axis of the second lens system of embodiment 7, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Figure 14 B shows the astigmatism curve of the second lens system of embodiment 7, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 14 C shows the distortion curve of the second lens system of embodiment 7, indicates different
The corresponding distortion sizes values of field angle.Figure 14 D shows the ratio chromatism, curve of the second lens system of embodiment 7, indicates
Light via the different image heights after camera lens on imaging surface deviation.According to Figure 14 A to Figure 14 D it is found that given by embodiment 7
The second lens system can be realized good image quality.
Embodiment 8
The second lens system according to the embodiment of the present application 8 is described referring to Figure 15 to Figure 16 D.Figure 15 shows root
According to the structural schematic diagram of second lens system of the embodiment of the present application 8.
As shown in figure 15, the second lens system along optical axis by object side to image side sequentially include: the first lens E1, diaphragm STO,
Second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, optical filter E7 and imaging surface S15.
First lens E1 has negative power, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has positive light coke, and object side S5 is
Concave surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke,
Its object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object
Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.In the present embodiment, the first lens E1 to the 6th is saturating
Mirror E6 can be the lens of plastic cement material.
Table 15 shows the basic parameter table of the second lens system of embodiment 8, wherein radius of curvature, thickness and focal length
Unit be millimeter (mm).Table 16 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 8, wherein each
Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.
Table 15
Table 16
Figure 16 A shows chromatic curve on the axis of the second lens system of embodiment 8, indicates the light warp of different wave length
Deviateed by the converging focal point after camera lens.Figure 16 B shows the astigmatism curve of the second lens system of embodiment 8, indicates meridian
Curvature of the image and sagittal image surface bending.Figure 16 C shows the distortion curve of the second lens system of embodiment 8, indicates different
The corresponding distortion sizes values of field angle.Figure 16 D shows the ratio chromatism, curve of the second lens system of embodiment 8, indicates
Light via the different image heights after camera lens on imaging surface deviation.According to Figure 16 A to Figure 16 D it is found that given by embodiment 8
The second lens system can be realized good image quality.
To sum up, embodiment 1 to embodiment 8 meets relationship shown in table 17 respectively.
| Conditional/embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Semi-FOVT(°) | 20.8 | 21.3 | 21.0 | 20.8 | ||||
| Semi-FOVW(°) | 52.3 | 52.1 | 52.0 | 52.0 | ||||
| TTLT/fT | 0.83 | 0.85 | 0.84 | 0.83 | ||||
| (f2T+f5T)/f4T | 0.63 | 0.46 | 0.50 | 0.65 | ||||
| ImgHT/fT | 0.39 | 0.40 | 0.39 | 0.39 | ||||
| R11T/R12T | 1.03 | 1.17 | 1.22 | 0.93 | ||||
| f1234T/(R1T+R2T) | 0.41 | 0.44 | 0.43 | 0.42 | ||||
| fW/f5W | 1.49 | 1.56 | 1.79 | 0.40 | ||||
| R2W/R1W | 0.43 | 0.50 | 0.39 | 0.46 | ||||
| R8W/R7W | 0.51 | 0.59 | 0.96 | 0.40 | ||||
| TTLW/ImgHW | 1.87 | 1.86 | 1.87 | 1.88 | ||||
| fW/EPDW | 2.19 | 2.19 | 2.19 | 2.19 |
Table 17
Although above the first lens system and the second lens system are described for including six-element lens,
It is understood by those skilled in the art that without departing from this application claims technical solution in the case where, can be changed structure
At the first lens system and/or the lens numbers of the second lens system.If desired, the first lens system and the second lens system
It may also include the lens of other quantity.Meanwhile without departing substantially from spirit and scope, referred to above
It is described in this specification each to obtain that each embodiment of one lens system and the second lens system can carry out any combination
And advantage as a result.
Similarly, although electronic imaging apparatus disclosed in the present application image-taking device including there are two, it should be understood, however, that
It is that the quantity of electronic imaging apparatus image-taking device mounted is merely illustrative, without that should limit the application.If needed
It wants, electronic imaging apparatus may also include the image-taking device of other quantity.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (41)
1. electronic imaging apparatus characterized by comprising
First image-taking device, the first sense electronics including the first lens system and on the imaging surface of first lens system
Optical element, first lens system include at least a piece of lens with focal power, and first lens system has light
Lens in the lens of focal power near object side have positive light coke；And
Second image-taking device, the second sense electronics including the second lens system and on the imaging surface of second lens system
Optical element, second lens system include at least a piece of lens with focal power, and second lens system has light
Lens in the lens of focal power near the object side have negative power；
Wherein, first image-taking device and second image-taking device are located at the same side of the electronic imaging apparatus, and institute
Stating the first image-taking device has different field angles from second image-taking device, and
Total effective focal length f of first lens systemTWith total effective focal length f of second lens systemWMeet fT/fW>
3.3。
2. electronic imaging apparatus according to claim 1, which is characterized in that the maximum half field-of-view of first lens system
Angle Semi-FOVTMeet 20 ° of < Semi-FOVT25 ° of <.
3. electronic imaging apparatus according to claim 1, which is characterized in that the maximum half field-of-view of second lens system
Angle Semi-FOVWMeet 50 ° of < Semi-FOVW55 ° of <.
4. electronic imaging apparatus according to claim 1, which is characterized in that first lens system near described
The object side of the lens of object side to first lens system distance of the imaging surface on the optical axis of first lens system
TTLTWith total effective focal length f of first lens systemTMeet TTLT/fT< 0.9.
5. electronic imaging apparatus according to claim 1, which is characterized in that have on the imaging surface of first lens system
Imitate the half ImgH of pixel region diagonal line lengthTWith total effective focal length f of first lens systemTMeet ImgHT/fT<
0.5。
6. electronic imaging apparatus according to claim 1, which is characterized in that second lens system near described
The object side of the lens of object side to second lens system distance of the imaging surface on the optical axis of second lens system
TTLWWith the half ImgH of effective pixel area diagonal line length on the imaging surface of second lens systemWMeet TTLW/ImgHW
< 1.9.
7. electronic imaging apparatus according to claim 1, which is characterized in that total effective focal length of second lens system
fWWith the entrance pupil aperture EPD of second lens systemWMeet fW/EPDW< 2.2.
8. electronic imaging apparatus according to claim 1, which is characterized in that in first lens system, any phase
There is airspace between adjacent two lens；And
In second lens system, there is airspace between two lens of arbitrary neighborhood.
9. electronic imaging apparatus according to claim 1, which is characterized in that first lens system is along described first
The optical axis of lens system by the imaging surface of the object side to first lens system sequentially include: the first lens, the second lens,
The third lens, the 4th lens, the 5th lens and the 6th lens.
10. electronic imaging apparatus according to claim 9, which is characterized in that the second lens of first lens system
Effective focal length f2T, first lens system the 5th lens effective focal length f5TWith the 4th of first lens system the
The effective focal length f4 of lensTMeet 0.4 < (f2T+f5T)/f4T< 0.7.
11. electronic imaging apparatus according to claim 9, which is characterized in that the 6th lens of first lens system
Object side radius of curvature R 11TWith the radius of curvature R 12 of the image side surface of the 6th lens of first lens systemTMeet
0.8 < R11T/R12T< 1.3.
12. electronic imaging apparatus according to claim 9, which is characterized in that the first lens of first lens system,
The combined focal length f1234 of second lens, the third lens and the 4th lensT, first lens system the first lens object side
The radius of curvature R 1 in faceTWith the radius of curvature R 2 of the image side surface of the first lens of first lens systemTMeet 0.3 <
f1234T/(R1T+R2T) < 0.6.
13. electronic imaging apparatus according to claim 9, which is characterized in that the 5th lens of first lens system
With negative power, object side is concave surface, and image side surface is concave surface.
14. electronic imaging apparatus according to claim 9, which is characterized in that the first lens of first lens system
At least four lens into the 6th lens are the lens of plastic cement material.
15. electronic imaging apparatus according to claim 1, which is characterized in that second lens system is along described
The optical axis of two lens systems by the imaging surface of the object side to second lens system sequentially include: the first lens, second thoroughly
Mirror, the third lens, the 4th lens, the 5th lens and the 6th lens.
16. electronic imaging apparatus according to claim 15, which is characterized in that total effective coke of second lens system
Away from fWWith the effective focal length f5 of the 5th lens of second lens systemWMeet 0.4≤fW/f5W≤1.8。
17. electronic imaging apparatus according to claim 15, which is characterized in that the first lens of second lens system
Image side surface radius of curvature R 2WWith the radius of curvature R 1 of the object side of the first lens of second lens systemWMeet 0.2
< R2W/R1W< 0.6.
18. electronic imaging apparatus according to claim 15, which is characterized in that the 4th lens of second lens system
Image side surface radius of curvature R 8WWith the radius of curvature R 7 of the object side of the 4th lens in second lens systemWMeet
0.3 < R8W/R7W< 1.0.
19. electronic imaging apparatus according to claim 15, which is characterized in that the second lens of second lens system
Image side surface be convex surface；And
5th lens of second lens system have positive light coke, and object side is concave surface, and image side surface is convex surface.
20. electronic imaging apparatus according to claim 15, which is characterized in that the first lens of second lens system
At least four lens into the 6th lens are the lens of plastic cement material.
21. electronic imaging apparatus according to claim 1, which is characterized in that first image-taking device and described second
Image-taking device is in longitudinal arrangement or transversely arranged on the side of the electronic imaging apparatus.
22. electronic imaging apparatus characterized by comprising
First image-taking device, the first sense electronics including the first lens system and on the imaging surface of first lens system
Optical element, first lens system include at least a piece of lens with focal power, and the lens near object side have just
Focal power；And
Second image-taking device, the second sense electronics including the second lens system and on the imaging surface of second lens system
Optical element, second lens system include at least a piece of lens with focal power, and the lens near object side have negative
Focal power；
Wherein, first image-taking device and second image-taking device are located at the same side of the electronic imaging apparatus, and
The maximum angle of half field-of view Semi-FOV of first lens systemTMeet 20 ° of < Semi-FOVT25 ° of <；
The maximum angle of half field-of view Semi-FOV of second lens systemWMeet 50 ° of < Semi-FOVW55 ° of <.
23. electronic imaging apparatus according to claim 22, which is characterized in that first lens system near institute
State the imaging surface of the object side of the lens of object side to first lens system on the optical axis of first lens system away from
From TTLTWith total effective focal length f of first lens systemTMeet TTLT/fT< 0.9.
24. electronic imaging apparatus according to claim 23, which is characterized in that total effective coke of first lens system
Away from fTWith total effective focal length f of second lens systemWMeet fT/fW> 3.3.
25. electronic imaging apparatus according to claim 22, which is characterized in that on the imaging surface of first lens system
The half ImgH of effective pixel area diagonal line lengthTWith total effective focal length f of first lens systemTMeet ImgHT/fT<
0.5。
26. electronic imaging apparatus according to claim 22, which is characterized in that second lens system near institute
State the imaging surface of the object side of the lens of object side to second lens system on the optical axis of second lens system away from
From TTLWWith the half ImgH of effective pixel area diagonal line length on the imaging surface of second lens systemWMeet TTLW/
ImgHW< 1.9.
27. electronic imaging apparatus according to claim 22, which is characterized in that total effective coke of second lens system
Away from fWWith the entrance pupil aperture EPD of second lens systemWMeet fW/EPDW< 2.2.
28. electronic imaging apparatus according to claim 22, which is characterized in that in first lens system, arbitrarily
There is airspace between adjacent two lens；And
In second lens system, there is airspace between two lens of arbitrary neighborhood.
29. electronic imaging apparatus according to claim 22, which is characterized in that first lens system is along described
The optical axis of one lens system by the imaging surface of the object side to first lens system sequentially include: the first lens, second thoroughly
Mirror, the third lens, the 4th lens, the 5th lens and the 6th lens.
30. electronic imaging apparatus according to claim 29, which is characterized in that the second lens of first lens system
Effective focal length f2T, first lens system the 5th lens effective focal length f5TWith the 4th of first lens system the
The effective focal length f4 of lensTMeet 0.4 < (f2T+f5T)/f4T< 0.7.
31. electronic imaging apparatus according to claim 29, which is characterized in that the 6th lens of first lens system
Object side radius of curvature R 11TWith the radius of curvature R 12 of the image side surface of the 6th lens of first lens systemTMeet
0.8 < R11T/R12T< 1.3.
32. electronic imaging apparatus according to claim 29, which is characterized in that the first of first lens system is thoroughly
Mirror, the second lens, the third lens and the 4th lens combined focal length f1234T, first lens system the first lens object
The radius of curvature R 1 of sideTWith the radius of curvature R 2 of the image side surface of the first lens of first lens systemTMeet 0.3 <
f1234T/(R1T+R2T) < 0.6.
33. electronic imaging apparatus according to claim 29, which is characterized in that the 5th lens of first lens system
With negative power, object side is concave surface, and image side surface is concave surface.
34. electronic imaging apparatus according to claim 29, which is characterized in that the first lens of first lens system
At least four lens into the 6th lens are the lens of plastic cement material.
35. electronic imaging apparatus according to claim 22, which is characterized in that second lens system is along described
The optical axis of two lens systems by the imaging surface of the object side to second lens system sequentially include: the first lens, second thoroughly
Mirror, the third lens, the 4th lens, the 5th lens and the 6th lens.
36. electronic imaging apparatus according to claim 35, which is characterized in that total effective coke of second lens system
Away from fWWith the effective focal length f5 of the 5th lens of second lens systemWMeet 0.4≤fW/f5W≤1.8。
37. electronic imaging apparatus according to claim 35, which is characterized in that the first lens of second lens system
Image side surface radius of curvature R 2WWith the radius of curvature R 1 of the object side of the first lens of second lens systemWMeet 0.2
< R2W/R1W< 0.6.
38. electronic imaging apparatus according to claim 35, which is characterized in that the 4th lens of second lens system
Image side surface radius of curvature R 8WWith the radius of curvature R 7 of the object side of the 4th lens in second lens systemWMeet
0.3 < R8W/R7W< 1.0.
39. electronic imaging apparatus according to claim 35, which is characterized in that the second lens of second lens system
Image side surface be convex surface；And
5th lens of second lens system have positive light coke, and object side is concave surface, and image side surface is convex surface.
40. electronic imaging apparatus according to claim 35, which is characterized in that the first lens of second lens system
At least four lens into the 6th lens are the lens of plastic cement material.
41. electronic imaging apparatus according to claim 22, which is characterized in that first image-taking device and described second
Image-taking device is in longitudinal arrangement or transversely arranged on the side of the electronic imaging apparatus.
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| CN201920519790.2U CN209690602U (en) | 2019-04-17 | 2019-04-17 | Electronic imaging apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11215798B2 (en) | 2019-09-06 | 2022-01-04 | Largan Precision Co., Ltd. | Photographing optical lens system, image capturing unit and electronic device |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11215798B2 (en) | 2019-09-06 | 2022-01-04 | Largan Precision Co., Ltd. | Photographing optical lens system, image capturing unit and electronic device |
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