CN109975950A - Optical lens - Google Patents
Optical lens Download PDFInfo
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- CN109975950A CN109975950A CN201711446517.3A CN201711446517A CN109975950A CN 109975950 A CN109975950 A CN 109975950A CN 201711446517 A CN201711446517 A CN 201711446517A CN 109975950 A CN109975950 A CN 109975950A
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- leading flank
- focal length
- optical lens
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
This application discloses a kind of optical lens, the optical lens is from front to back sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, the first lens can have positive light coke, and leading flank is convex surface, and trailing flank is concave surface；Second lens can have negative power, and leading flank is convex surface, and trailing flank is concave surface；The third lens can have negative power, and leading flank and trailing flank are concave surface；4th lens can have positive light coke, and leading flank and trailing flank are convex surface；5th lens can have positive light coke, and side is convex surface thereafter；6th lens can have positive light coke, and leading flank and trailing flank are convex surface；And the third lens can be with the 4th lens gluing.According to the optical lens of the application, it can be achieved that miniaturization, back focal length and other effects.
Description
Technical field
This application involves a kind of optical lens, more specifically, this application involves a kind of optical lens including six-element lens.
Background technique
With the development of technology, more and more fields need to be applied to camera lens, at present in some application fields in usually
It is required that while lens imaging quality is good, need to take into account small in size, stability is strong, it can be worked normally in large temperature range,
And in some application fields in require rear lens focus long.Such as on-vehicle lens, projection lens' head etc..
Such as on-vehicle lens, since vehicle is needed in outdoor application, performance of the camera lens under various temperature environments is steady
Surely seem increasingly important.And due to being limited by interior installation space, camera lens needs to meet small form factor requirements.High-resolution is wanted
Ask even more essential, and back focal length is conducive to the assembly either other application needs of camera lens.
For example vehicle-mounted HUD projection lens, important function of the vehicle-mounted HUD in terms of driving safety have been widely used.
But tradition HUD projector distance is short, volume is bigger than normal and projection imaging region is small, these all seriously hinder further applying for HUD
And development.Vehicle-mounted HUD projection lens simultaneously, is mounted on automotive interior, since vehicle body temperature change is larger, this is also to projection
Iimaging Stability of the camera lens in larger the temperature difference range proposes high requirement.
Such as projection lens, projection device, which works long hours, can generate heat seriously, therefore the performance of camera lens at each temperature is steady
It is fixed also critically important, while with the demand of portable miniaturized projection instrument, projection lens miniaturization is also inevitable trend, and
The rear coke of camera lens is longer need to have preferable compatibility with the projection field of lighting system matched design with some.
Therefore, the application provide a kind of miniaturization, back focal length, can using for such as on-vehicle lens, projection lens it is first-class
Optical lens.
Summary of the invention
This application provides the optical frames that can at least overcome or partially overcome at least one above-mentioned defect in the prior art
Head.
The one aspect of the application provides such a optical lens, which can sequentially wrap from front to back
It includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, wherein the first lens
There can be positive light coke, leading flank is convex surface, and trailing flank is concave surface；Second lens can have negative power, and leading flank is
Convex surface, trailing flank are concave surface；The third lens can have negative power, and leading flank and trailing flank are concave surface；4th lens can
With positive light coke, leading flank and trailing flank are convex surface；5th lens can have positive light coke, and side is convex surface thereafter；
6th lens can have positive light coke, and leading flank and trailing flank are convex surface；And the third lens can be with the 4th lens gluing.
In one embodiment, the leading flank of the 5th lens can be concave surface.
In another embodiment, the leading flank of the 5th lens can be plane.
In yet another embodiment, the leading flank of the 5th lens can be convex surface.Further, the leading flank of the 5th lens
Radius of curvature R 9 and the 5th lens trailing flank radius of curvature R 10 between can meet: -1.6≤R9/R10≤- 0.5.
In one embodiment, can expire between the optics overall length TTL of optical lens and the whole group focal length value F of optical lens
Foot: TTL/F≤4.
In one embodiment, the optic back focal of optical lens is away from can between BFL and the whole group focal length value F of optical lens
Meet: BFL/F >=0.6.
In one embodiment, the radius of curvature R 3, the curvature of the trailing flank of the second lens of the leading flank of the second lens
It can meet between radius R4 and the thickness d 3 of the second lens: 0.6≤R3/ (R4+d3)≤1.5.
In one embodiment, can meet between the focal length value F1 of the first lens and the focal length value F2 of the second lens: -3
≤F1/F2≤-0.4。
In one embodiment, the whole group of the combined focal length value F34 and optical lens of the third lens and the 4th lens are burnt
Away from can meet between value F: 2≤F34/F≤8.
In one embodiment, the whole group of the combined focal length value F56 and optical lens of the 5th lens and the 6th lens are burnt
Away from can meet between value F: 0.5≤F56/F≤1.3.
In one embodiment, the radius of curvature R 11 of the 6th lens leading flank and the curvature of the 6th lens trailing flank half
It can meet between diameter R12: -1.4≤R11/R12≤- 0.6.
The another aspect of the application provides such a optical lens, which can sequentially wrap from front to back
It includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, the first lens, the 4th
Lens, the 5th lens and the 6th lens have positive light coke；Second lens and the third lens have negative power；Wherein, first
The leading flank of lens and the second lens is convex surface, and trailing flank is concave surface；Leading flank and the trailing flank of 4th lens and the 6th lens
It is convex surface；And optical lens optics overall length TTL and optical lens whole group focal length value F between meet: TTL/F≤4.
In one embodiment, the leading flank of the 5th lens can be concave surface, and trailing flank can be convex surface.
In another embodiment, the leading flank of the 5th lens can be plane, and trailing flank can be convex surface.
In yet another embodiment, the leading flank of the 5th lens and trailing flank can be convex surface.Further, the 5th thoroughly
It can meet between the radius of curvature R 10 of the trailing flank of the radius of curvature R 9 and the 5th lens of the leading flank of mirror: -1.6≤R9/R10
≤-0.5。
In one embodiment, the optic back focal of optical lens is away from can between BFL and the whole group focal length value F of optical lens
Meet: BFL/F >=0.6.
In one embodiment, the radius of curvature R 3, the curvature of the trailing flank of the second lens of the leading flank of the second lens
It can meet between radius R4 and the thickness d 3 of the second lens: 0.6≤R3/ (R4+d3)≤1.5.
In one embodiment, can meet between the focal length value F1 of the first lens and the focal length value F2 of the second lens: -3
≤F1/F2≤-0.4。
In one embodiment, the whole group of the combined focal length value F34 and optical lens of the third lens and the 4th lens are burnt
Away from can meet between value F: 2≤F34/F≤8.
In one embodiment, the whole group of the combined focal length value F56 and optical lens of the 5th lens and the 6th lens are burnt
Away from can meet between value F: 0.5≤F56/F≤1.3.
In one embodiment, the radius of curvature R 11 of the 6th lens leading flank and the curvature of the 6th lens trailing flank half
It can meet between diameter R12: -1.4≤R11/R12≤- 0.6.
In one embodiment, the leading flank of the third lens and trailing flank can be concave surface.
In one embodiment, the third lens can be with the 4th lens gluing.
The application uses such as six-element lens, by the shape of optimal setting eyeglass, the light focus of each eyeglass of reasonable distribution
Degree and balsaming lens etc. is formed, realizes the miniaturization of optical lens, back focal length, using the beneficial effects such as wide.
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 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 1；
Fig. 2 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 2；And
Fig. 3 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 3.
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 it is glued saturating that the first balsaming lens is also known as second
Mirror.
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.It should be understood that the surface in each lens by front end claims
For leading flank, the surface in each lens close to rear end is known as trailing flank, and each lens can have leading flank and trailing flank.
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.
Optical lens according to the application illustrative embodiments includes such as six lens with focal power, i.e., and first
Lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.This six lens from front to back according to
Sequence arrangement.
It can also further comprise the photosensitive member for being set to imaging surface according to the optical lens of the application illustrative embodiments
Part.Optionally, the photosensitive element for being set to imaging surface can be photosensitive coupling element (CCD) or Complimentary Metal-Oxide semiconductor
Element (CMOS).
First lens can have a positive light coke, and it can be concave surface that leading flank, which can be convex surface, trailing flank,.First lens are set as
The meniscus shape for being convex to front side is advantageous.For example, when being used as projection lens, towards the meniscus shape of amplification end (image side)
It can guarantee projection angle as big as possible；When being used as on-vehicle lens, the meniscus shape design for being convex to front side can be as far as possible
High angle scattered light is collected on ground, and light is made to enter rear optical system.And in practical applications, it is contemplated that pacify outside on-vehicle lens room
Use environment is filled, the cunning of water droplet can be conducive in the bad weathers such as sleet, such meniscus shape design for being convex to front side
It falls, reduces the influence to imaging.
Second lens can have negative power, and leading flank can be convex surface, and trailing flank can be concave surface.Second lens can be gentle
Light tendency, correction system aberration.Wherein, the second lens can be configured to the special designing close to concentric circles, i.e. the second lens
It can meet between the radius of curvature R 3 of leading flank, the radius of curvature R 4 of the second lens trailing flank and the thickness d 3 of the second lens: 0.6
≤ R3/ (R4+d3)≤1.5, it is desirable that can 1.1≤R3/ of further satisfaction (R4+d3)≤1.3.Configuration in this way can have
Conducive to reduction spherical aberration, lifting system image quality.
The third lens can have negative power, and leading flank and trailing flank can be concave surface.
4th lens can have positive light coke, and leading flank and trailing flank can be convex surface.
5th lens can have positive light coke, and leading flank is optionally convex surface, plane or concave surface, and trailing flank is convex surface.
5th lens are convergent lens, can further compress the light angle of divergence, reduce camera lens aperture.Low dispersion material can be selected in 5th lens
Material, facilitates compensating for system color difference.In the exemplary embodiment, when the 5th lens are configured to the positive lens of biconvex, the 5th
Can meet between the radius of curvature R 9 of lens leading flank and the radius of curvature R 10 of the 5th lens trailing flank -1.6≤R9/R10≤-
0.5, it is desirable that can further satisfaction -1.2≤R9/R10≤- 0.8.Such configuration can be conducive to promote image quality, control picture
Difference.
6th lens can have positive light coke, and leading flank and trailing flank can be convex surface.6th lens are convergent lens,
Square optical system after entering after converging light.
In the exemplary embodiment, spheric glass can be used in the first lens to the 6th lens.
In the exemplary embodiment, it may also include in optical lens and be for example set between the second lens and the third lens
For limiting the diaphragm of light beam.It should be understood that diaphragm can be arranged according to needs in camera lens according to application/requirement difference
Any position in, without being limited by above-mentioned position.
As it is known to the person skilled in the art, balsaming lens can be used for reducing color difference to the maximum extent or eliminate color difference.?
The reflection loss that image quality can be improved using balsaming lens in optical lens, reduce light energy, to promote the clear of lens imaging
Clear degree.In addition, the use of balsaming lens can also simplify the linkage editor in camera lens manufacturing process.
In the exemplary embodiment, can by the way that the leading flank of the trailing flank of the third lens and the 4th lens is glued, and
By the third lens and the 4th lens combination at balsaming lens.It is saturating by introducing the gluing being made of the third lens and the 4th lens
Mirror can help to eliminate color difference influence, reduce the curvature of field, correct coma；Meanwhile balsaming lens can be with residual fraction color difference with flat
The whole color difference for the optical system that weighs.The airspace between two eyeglasses is omitted in the gluing of eyeglass, so that optical system overall is tight
It gathers, meets system compact demand.Also, eyeglass gluing can reduce lens unit because group stand during generate inclination/
The tolerance sensitivities problem such as core shift.
In balsaming lens, the third lens have negative power, and the 4th lens have positive light coke, and such setting can be with
The symmetrical structure of first lens and the second lens forming relative to diaphragm is conducive to what coke after reducing was generated with variation of ambient temperature
Drift, and balance system aberration.
In the exemplary embodiment, between the optics total length TTL of optical lens and the whole group focal length value F of optical lens
TTL/F≤4 can be met, it is desirable that TTL and F can further meet TTL/F≤3.Meet conditional TTL/F≤4, it can be achieved that mirror
The small size performance of head.
In the exemplary embodiment, the optic back focal of optical lens is away between BFL and the whole group focal length value F of optical lens
It can meet: BFL/F >=0.6, it is desirable that can further satisfaction BFL/F >=0.8.Meet conditional BFL/F >=0.6, it can be achieved that mirror
The back focal length characteristic of head
In the exemplary embodiment, -3 can be met between the focal length value F1 of the first lens and the focal length value F2 of the second lens
≤ F1/F2≤- 0.4, it is desirable that can further satisfaction -2.1≤F1/F2≤- 1.8.Pass through the light of the first lens and the second lens
The reasonable distribution of focal power, can balance system spherical aberration, promoted image quality.
In the exemplary embodiment, the whole group of the combined focal length value F34 and optical lens of the third lens and the 4th lens
2≤F34/F≤8 can be met between focal length value F, it is desirable that can further satisfaction 4≤F34/F≤6.Pass through reasonable focal power
Distribution can be conducive to the temperature stability for improving camera lens.
In the exemplary embodiment, the whole group of the combined focal length value F56 and optical lens of the 5th lens and the 6th lens
0.5≤F56/F≤1.3 can be met between focal length value F, it is desirable that can further satisfaction 0.8≤F56/F≤1.By reasonable
Focal power distribution can be conducive to the temperature stability for improving camera lens.
In the exemplary embodiment, the curvature of the radius of curvature R 11 of the 6th lens leading flank and the 6th lens trailing flank
- 1.4≤R11/R12≤- 0.6 can be met between radius R12, it is desirable that can further satisfaction -1.2≤R11/R12≤- 0.8.
Such shape design, is conducive to lifting system image quality, controls aberration.
In the exemplary embodiment, eyeglass used by optical lens can be the eyeglass of plastic material, can also be
The eyeglass of glass material.The eyeglass thermal expansion coefficient of plastic material is larger, when the variation of ambient temperature used in the camera lens is larger,
The lens of plastic material can affect greatly the overall performance of camera lens.The eyeglass of glass material can reduce temperature to camera lens
The influence of performance, but higher cost.
The application is arranged by reasonable lens shape, eyeglass arrangement, the distribution of each optical surface focal power and each eyeglass
Material it is reasonably combined, there is excellent imaging effect/projection quality, such as higher resolving power, color difference is small, aberration control
Within ± 1%；And lens length is substantially reduced while guaranteeing image quality, lens length controls within 35mm,
Convenient for interior installation in a limited space；With longer rear coke, guarantees that camera lens rear end has sufficient space to place other elements, avoid
Mechanical interferences；And in biggish range of temperature (- 40~95 DEG C) be able to maintain good imaging effect without generate it is bright
Aobvious rear burnt drift；Camera lens uses 6 eyeglass frameworks, at low cost；And the application of cemented doublet, simplify assembly process；It is projecting
In the utilization of camera lens, the diminution end (object side) of camera lens is designed using telecentric beam path, to allow biggish build-up tolerance, and makes camera lens
With preferable General adaptive.
There is extensive utilization according to the optical lens of the application, can be used, for example, as on-vehicle lens and projection lens' head etc..
It should be understood that being from front to back, i.e., according to the radiation direction of the optical lens of the application when being used as on-vehicle lens
Light is transferred to the 6th lens from the first lens, then reaches imaging surface.It should be understood that when being used as projection lens, root
Radiation direction according to the optical lens of the application is from rear end to front end, i.e., light is transferred to the first lens from the 6th lens, so
After be incident upon in projected objects.
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.Although for example,
It is described by taking six lens as an example in embodiment, but the optical lens is not limited to include six lens.If desired,
The optical lens may also include the lens of other quantity.
The specific embodiment for being applicable to the optical lens of above embodiment is further described with reference to the accompanying drawings.
Embodiment 1
Referring to Fig. 1 description according to the optical lens of the embodiment of the present application 1.Fig. 1 is shown according to the embodiment of the present application 1
Optical lens structural schematic diagram.
As shown in Figure 1, side sequentially includes that the first lens L1, the second lens L2, third are saturating to optical lens from front to back
Mirror L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.
First lens L1 is the meniscus lens with positive light coke, and leading flank S1 is convex surface, and trailing flank S2 is concave surface.
Second lens L2 is the meniscus lens with negative power, and leading flank S3 is convex surface, and trailing flank S4 is concave surface.
The third lens L3 is the biconcave lens with negative power, and leading flank S6 is concave surface, and trailing flank S7 is concave surface.The
Four lens L4 are the biconvex lens with positive light coke, and leading flank S7 is convex surface, and trailing flank S8 is convex surface.Wherein, third is saturating
Mirror L3 and the 4th lens L4 gluing unit are at balsaming lens.
5th lens L5 is the meniscus lens with positive light coke, and leading flank S9 is concave surface, and trailing flank S10 is convex surface.
6th lens L6 is the biconvex lens with positive light coke, and leading flank S11 is convex surface, and trailing flank S12 is convex surface.
Wherein, the first lens L1 to the 6th lens L6 is spheric glass.
It optionally, can be in the 6th lens of the optical lens in the case where the optical lens is used as on-vehicle lens
Optical filter and/or protection lens are set after L6.Optical filter can be used for correcting color error ratio, and protection lens can be used for protecting and be located at
The image sensor chip of imaging surface IMA.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged in imaging surface
On S13.
Optionally, in the case where the optical lens is used as projection lens, can also be arranged after the 6th lens L6
Other prisms/field lens because the thickness of the prism/field lens is larger, therefore need the rear coke of camera lens longer, and telecentricity will be got well.Wherein,
Prism is used for the illumination end and imaging end of transition projection lens；Field lens recoverable aberration improves the ability of edge light beam incidence.?
In the case that the optical lens is used as projection lens, the radiation direction of projection lens is that rear end to front end (reduces end to putting
Big end), that is, the light for carrying out self-emitting light source face S13 sequentially passes through each surface S12 to S1 and is finally incident upon in projected objects.
In the present embodiment, it may also include the light being arranged between the second lens L2 and the third lens L3 in optical lens
Door screen, to improve image quality.
Table 1 shows radius of curvature R, thickness T, refractive index Nd and the Abbe of each lens of the optical lens of embodiment 1
Number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).
Table 1
| Face number | Radius of curvature R | Thickness T | Refractive index Nd | Abbe number Vd |
| 1 | 19.8545 | 5.0058 | 1.81 | 44.00 |
| 2 | 80.6576 | 1.9329 | ||
| 3 | 11.5571 | 5.0225 | 1.60 | 36.20 |
| 4 | 4.2779 | 3.7274 | ||
| STO | It is infinite | 2.4195 | ||
| 6 | -14.0547 | 4.0011 | 1.85 | 46.80 |
| 7 | 53.9618 | 3.8396 | 1.50 | 64.60 |
| 8 | -8.0174 | 0.1093 | ||
| 9 | -83.5844 | 2.5978 | 1.77 | 39.60 |
| 10 | -27.1230 | 1.0133 | ||
| 11 | 33.4470 | 3.2022 | 1.76 | 49.60 |
| 12 | -31.2010 | 15.3176 | ||
| IMA | It is infinite |
The present embodiment uses six-element lens as an example, by each power of lens of reasonable distribution and face type, respectively
Airspace between the center thickness of lens and each lens can make camera lens have miniaturization, back focal length, high-resolution, thermostabilization
At least one of beneficial effects such as property is good, at low cost, projection quality is high.
The following table 2 give the optical lens of embodiment 1 optics total length TTL (such as in on-vehicle lens, TTL be from
Distance on the center of the leading flank S1 of first lens L1 to the axis of imaging surface S13；Such as in projection lens, TTL is from first
Distance on the center of the leading flank S1 of lens L1 to the axis of light emitting source face S13), whole group focal length value F, the optical lens of optical lens
Optic back focal away from BFL, (such as in on-vehicle lens, BFL is from the center of the trailing flank S12 of the 6th lens L6 to imaging surface
Distance on the axis of S13；Such as in projection lens, BFL is from the center of the trailing flank S12 of the 6th lens L6 to light emitting source face
Distance on the axis of S13), the radius of curvature R 3 of the leading flank S3 of the second lens L2, the second lens L2 trailing flank S4 curvature half
The group focus of diameter R4, the focal length value F1 of the first lens L1, the focal length value F2 of the second lens L2, the third lens L3 and the 4th lens L4
The radius of curvature of leading flank S11 away from value F34, the combined focal length value F56 of the 5th lens L5 and the 6th lens L6, the 6th lens L6
The thickness d 3 of the radius of curvature R 12 of the trailing flank S12 of R11, the 6th lens L6 and the second lens L2.
Table 2
| TTL(mm) | 48.189 | R3(mm) | 11.557 |
| F(mm) | 16.963 | R4(mm) | 4.278 |
| BFL(mm) | 15.318 | d3(mm) | 5.022 |
| F1(mm) | 31.360 | R11(mm) | 33.447 |
| F2(mm) | -15.291 | R12(mm) | -31.201 |
| F34(mm) | 75.431 | ||
| F56(mm) | 15.390 |
In the present embodiment, meet between the optics total length TTL of optical lens and the whole group focal length value F of optical lens
TTL/F=2.84；The optic back focal of optical lens is away from meeting BFL/F=between BFL and the whole group focal length value F of optical lens
0.90；The thickness d 3 of the radius of curvature R 3 of second lens leading flank, the radius of curvature R 4 of the second lens trailing flank and the second lens
Between meet R3/ (R4+d3)=1.24；Meet F1/F2 between the focal length value F1 of first lens and the focal length value F2 of the second lens
=-2.05；Meet F34/F between the whole group focal length value F of the combined focal length value F34 and optical lens of the third lens and the 4th lens
=4.45；Meet F56/F between the whole group focal length value F of the combined focal length value F56 and optical lens of 5th lens and the 6th lens
=0.91；And the 6th lens leading flank radius of curvature R 11 and the 6th lens trailing flank radius of curvature R 12 between meet
R11/R12=-1.07.
Embodiment 2
The optical lens according to the embodiment of the present application 2 is described referring to Fig. 2.In the present embodiment and following embodiment
In, for brevity, by clipped description similar to Example 1.Fig. 2 shows the optics according to the embodiment of the present application 2
The structural schematic diagram of camera lens.
As shown in Fig. 2, optical lens sequentially includes from front to back
First lens L1, the second lens L2, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.
First lens L1 is the meniscus lens with positive light coke, and leading flank S1 is convex surface, and trailing flank S2 is concave surface.
Second lens L2 is the meniscus lens with negative power, and leading flank S3 is convex surface, and trailing flank S4 is concave surface.
The third lens L3 is the biconcave lens with negative power, and leading flank S6 is concave surface, and trailing flank S7 is concave surface.The
Four lens L4 are the biconvex lens with positive light coke, and leading flank S7 is convex surface, and trailing flank S8 is convex surface.Wherein, third is saturating
Mirror L3 and the 4th lens L4 gluing unit are at balsaming lens.
5th lens L5 is the plano-convex lens with positive light coke, and leading flank S9 is plane, and trailing flank S10 is convex surface.
6th lens L6 is the biconvex lens with positive light coke, and leading flank S11 is convex surface, and trailing flank S12 is convex surface.
Wherein, the first lens L1 to the 6th lens L6 is spheric glass.
It optionally, can be in the 6th lens of the optical lens in the case where the optical lens is used as on-vehicle lens
Optical filter and/or protection lens are set after L6.Optical filter can be used for correcting color error ratio, and protection lens can be used for protecting and be located at
The image sensor chip of imaging surface IMA.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged in imaging surface
On S13.
Optionally, in the case where the optical lens is used as projection lens, can also be arranged after the 6th lens L6
The thickness of other prisms/field lens, the prism/field lens is larger, therefore needs the rear coke of camera lens longer, and telecentricity will be got well.Wherein, rib
Mirror is used for the illumination end and imaging end of transition projection lens；Field lens recoverable aberration improves the ability of edge light beam incidence.It is inciting somebody to action
In the case that the optical lens is used as projection lens, the radiation direction of projection lens is that rear end to front end (reduces end to amplification
End), that is, the light for carrying out self-emitting light source face S13 sequentially passes through each surface S12 to S1 and is finally incident upon in projected objects.
In the present embodiment, it may also include the light being arranged between the second lens L2 and the third lens L3 in optical lens
Door screen, to improve image quality.
The following table 3 show the radius of curvature R of each lens of the optical lens of embodiment 2, thickness T, refractive index Nd and Ah
Shellfish number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).The following table 4 gives embodiment 2
The optics total length TTL of optical lens, the whole group focal length value F of optical lens, optical lens optic back focal away from
The radius of curvature R 3 of the leading flank S3 of BFL, the second lens L2, the second lens L2 trailing flank S4 radius of curvature R 4, first it is saturating
The focal length value F1 of mirror L1, the focal length value F2 of the second lens L2, the combined focal length value F34 of the third lens L3 and the 4th lens L4,
The combined focal length value F56 of five lens L5 and the 6th lens L6, the radius of curvature R the 11, the 6th of the leading flank S11 of the 6th lens L6 are saturating
The thickness d 3 of the radius of curvature R 12 of the trailing flank S12 of mirror L6 and the second lens L2.
Table 3
| Face number | Radius of curvature R | Thickness T | Refractive index Nd | Abbe number Vd |
| 1 | 20.1288 | 5.0033 | 1.81 | 44.00 |
| 2 | 83.8126 | 1.9022 | ||
| 3 | 11.8718 | 5.0176 | 1.60 | 36.20 |
| 4 | 4.4098 | 3.9039 | ||
| STO | It is infinite | 2.7158 | ||
| 6 | -12.9861 | 4.0027 | 1.85 | 46.80 |
| 7 | 82.7830 | 3.5694 | 1.50 | 64.60 |
| 8 | -8.1150 | 0.1081 | ||
| 9 | It is infinite | 2.7421 | 1.77 | 39.60 |
| 10 | -31.3729 | 1.0121 | ||
| 11 | 35.9479 | 3.1154 | 1.76 | 49.60 |
| 12 | -33.7019 | 15.2885 | ||
| IMA | It is infinite |
Table 4
| TTL(mm) | 48.381 | R3(mm) | 11.872 |
| F(mm) | 16.962 | R4(mm) | 4.410 |
| BFL(mm) | 15.288 | d3(mm) | 5.018 |
| F1(mm) | 31.594 | R11(mm) | 35.948 |
| F2(mm) | -15.656 | R12(mm) | -33.702 |
| F34(mm) | 99.009 | ||
| F56(mm) | 15.213 |
In the present embodiment, meet between the optics total length TTL of optical lens and the whole group focal length value F of optical lens
TTL/F=2.85；The optic back focal of optical lens is away from meeting BFL/F=between BFL and the whole group focal length value F of optical lens
0.90；The thickness d 3 of the radius of curvature R 3 of second lens leading flank, the radius of curvature R 4 of the second lens trailing flank and the second lens
Between meet R3/ (R4+d3)=1.26；Meet F1/F2 between the focal length value F1 of first lens and the focal length value F2 of the second lens
=-2.02；Meet F34/F between the whole group focal length value F of the combined focal length value F34 and optical lens of the third lens and the 4th lens
=5.84；Meet F56/F between the whole group focal length value F of the combined focal length value F56 and optical lens of 5th lens and the 6th lens
=0.90；And the 6th lens leading flank radius of curvature R 11 and the 6th lens trailing flank radius of curvature R 12 between meet
R11/R12=-1.07.
Embodiment 3
The optical lens according to the embodiment of the present application 3 is described referring to Fig. 3.In the present embodiment and following embodiment
In, for brevity, by clipped description similar to Example 1.Fig. 3 shows the optics according to the embodiment of the present application 3
The structural schematic diagram of camera lens.
As shown in figure 3, optical lens sequentially includes from front to back
First lens L1, the second lens L2, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.
First lens L1 is the meniscus lens with positive light coke, and leading flank S1 is convex surface, and trailing flank S2 is concave surface.
Second lens L2 is the meniscus lens with negative power, and leading flank S3 is convex surface, and trailing flank S4 is concave surface.
The third lens L3 is the biconcave lens with negative power, and leading flank S6 is concave surface, and trailing flank S7 is concave surface.The
Four lens L4 are the biconvex lens with positive light coke, and leading flank S7 is convex surface, and trailing flank S8 is convex surface.Wherein, third is saturating
Mirror L3 and the 4th lens L4 gluing unit are at balsaming lens.
5th lens L5 is the biconvex lens with positive light coke, and leading flank S9 is convex surface, and trailing flank S10 is convex surface.
6th lens L6 is the biconvex lens with positive light coke, and leading flank S11 is convex surface, and trailing flank S12 is convex surface.
Wherein, the first lens L1 to the 6th lens L6 is spheric glass.
It optionally, can be in the 6th lens of the optical lens in the case where the optical lens is used as on-vehicle lens
Optical filter and/or protection lens are set after L6.Optical filter can be used for correcting color error ratio, and protection lens can be used for protecting and be located at
The image sensor chip of imaging surface IMA.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged in imaging surface
On S13.
Optionally, in the case where the optical lens is used as projection lens, can also be arranged after the 6th lens L6
The thickness of other prisms/field lens, the prism/field lens is larger, therefore needs the rear coke of camera lens longer, and telecentricity will be got well.Wherein, rib
Mirror is used for the illumination end and imaging end of transition projection lens；Field lens recoverable aberration improves the ability of edge light beam incidence.It is inciting somebody to action
In the case that the optical lens is used as projection lens, the radiation direction of projection lens is that rear end to front end (reduces end to amplification
End), that is, the light for carrying out self-emitting light source face S13 sequentially passes through each surface S12 to S1 and is finally incident upon in projected objects.
In the present embodiment, it may also include the light being arranged between the second lens L2 and the third lens L3 in optical lens
Door screen, to improve image quality.
The following table 5 show the radius of curvature R of each lens of the optical lens of embodiment 3, thickness T, refractive index Nd and Ah
Shellfish number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).The following table 6 gives the optical lens of embodiment 3
Front side of the optic back focal away from BFL, the second lens L2 of optics total length TTL, the whole group focal length value F of optical lens, optical lens
The radius of curvature R 3 of face S3, the radius of curvature R 4 of the trailing flank S4 of the second lens L2, the focal length value F1 of the first lens L1, second are thoroughly
Focal length value F2, the third lens L3 of mirror L2 and combined focal length value F34, the 5th lens L5's of the 4th lens L4 and the 6th lens L6
Combined focal length value F56, the radius of curvature R 11 of the leading flank S11 of the 6th lens L6, the 6th lens L6 trailing flank S12 curvature
The thickness d 3 of radius R12 and the second lens L2.
Table 5
| Face number | Radius of curvature R | Thickness T | Refractive index Nd | Abbe number Vd |
| 1 | 21.4547 | 5.0011 | 1.81 | 44.00 |
| 2 | 100.0002 | 2.0000 | ||
| 3 | 11.3007 | 5.0069 | 1.60 | 36.20 |
| 4 | 4.5105 | 4.0017 | ||
| STO | It is infinite | 2.2870 | ||
| 6 | -13.4231 | 4.0011 | 1.85 | 46.80 |
| 7 | 57.5669 | 5.0002 | 1.50 | 64.60 |
| 8 | -8.5159 | 0.1094 | ||
| 9 | 52.0975 | 2.8566 | 1.77 | 39.60 |
| 10 | -46.0975 | 0.4998 | ||
| 11 | 48.0975 | 2.8566 | 1.76 | 49.60 |
| 12 | -44.0975 | 15.4044 | ||
| IMA | It is infinite |
Table 6
| TTL(mm) | 49.025 | R4(mm) | 4.510 |
| F(mm) | 17.323 | d3(mm) | 5.007 |
| BFL(mm) | 15.404 | R11(mm) | 48.097 |
| F1(mm) | 33.049 | R12(mm) | -44.097 |
| F2(mm) | -17.439 | R9(mm) | 52.097 |
| F34(mm) | 100.006 | R10(mm) | -46.097 |
| F56(mm) | 16.249 | ||
| R3(mm) | 11.301 |
In the present embodiment, meet between the optics total length TTL of optical lens and the whole group focal length value F of optical lens
TTL/F=2.84；The optic back focal of optical lens is away from meeting BFL/F=between BFL and the whole group focal length value F of optical lens
0.89；The thickness d 3 of the radius of curvature R 3 of second lens leading flank, the radius of curvature R 4 of the second lens trailing flank and the second lens
Between meet R3/ (R4+d3)=1.19；Meet F1/F2 between the focal length value F1 of first lens and the focal length value F2 of the second lens
=-1.90；Meet F34/F between the whole group focal length value F of the combined focal length value F34 and optical lens of the third lens and the 4th lens
=5.80；Meet F56/F between the whole group focal length value F of the combined focal length value F56 and optical lens of 5th lens and the 6th lens
=0.94；Meet R11/ between the radius of curvature R 11 of 6th lens leading flank and the radius of curvature R 12 of the 6th lens trailing flank
R12=-1.09；And the 5th lens leading flank radius of curvature R 9 and the 5th lens trailing flank radius of curvature R 10 between it is full
Sufficient R9/R10=-1.13.
To sum up, embodiment 1 to embodiment 3 meets relationship shown in following table 7 respectively.
Table 7
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 (13)
1. optical lens sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th from front to back
Lens and the 6th lens,
It is characterized in that,
First lens have positive light coke, and leading flank is convex surface, and trailing flank is concave surface；
Second lens have negative power, and leading flank is convex surface, and trailing flank is concave surface；
The third lens have negative power, and leading flank and trailing flank are concave surface；
4th lens have positive light coke, and leading flank and trailing flank are convex surface；
5th lens have positive light coke, and side is convex surface thereafter；
6th lens have positive light coke, and leading flank and trailing flank are convex surface；And
The third lens and the 4th lens are glued.
2. optical lens according to claim 1, which is characterized in that the leading flank of the 5th lens is concave surface.
3. optical lens according to claim 1, which is characterized in that the leading flank of the 5th lens is plane.
4. optical lens according to claim 1, which is characterized in that the leading flank of the 5th lens is convex surface.
5. optical lens according to claim 4, which is characterized in that the radius of curvature R 9 of the leading flank of the 5th lens
Meet between the radius of curvature R 10 of the trailing flank of the 5th lens: -1.6≤R9/R10≤- 0.5.
6. optical lens according to any one of claims 1-5, which is characterized in that the optics overall length of the optical lens
Meet between TTL and the whole group focal length value F of the optical lens: TTL/F≤4.
7. optical lens according to any one of claims 1-5, which is characterized in that the optic back focal of the optical lens
Away from meeting between BFL and the whole group focal length value F of the optical lens: BFL/F >=0.6.
8. optical lens according to any one of claims 1-5, which is characterized in that the leading flank of second lens
Meet between radius of curvature R 3, the radius of curvature R 4 of trailing flank of second lens and the thickness d 3 of second lens: 0.6
≤R3/(R4+d3)≤1.5。
9. optical lens according to any one of claims 1-5, which is characterized in that the focal length value F1 of first lens
Meet between the focal length value F2 of second lens: -3≤F1/F2≤- 0.4.
10. optical lens according to any one of claims 1-5, which is characterized in that the third lens and described
Meet between the combined focal length value F34 of four lens and the whole group focal length value F of the optical lens: 2≤F34/F≤8.
11. optical lens according to any one of claims 1-5, which is characterized in that the 5th lens and described
Meet between the combined focal length value F56 of six lens and the whole group focal length value F of the optical lens: 0.5≤F56/F≤1.3.
12. optical lens according to any one of claims 1-5, which is characterized in that the leading flank of the 6th lens
Radius of curvature R 11 and the 6th lens trailing flank radius of curvature R 12 between meet: -1.4≤R11/R12≤- 0.6.
13. optical lens sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th from front to back
Lens and the 6th lens,
It is characterized in that,
First lens, the 4th lens, the 5th lens and the 6th lens have positive light coke；
Second lens and the third lens have negative power；
Wherein, the leading flank of first lens and second lens is convex surface, and trailing flank is concave surface；
The leading flank and trailing flank of 4th lens and the 6th lens are convex surface；And
Meet between the optics overall length TTL of the optical lens and the whole group focal length value F of the optical lens: TTL/F≤4.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856779A (en) * | 2018-12-31 | 2019-06-07 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN109856780A (en) * | 2018-12-31 | 2019-06-07 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| WO2021134765A1 (en) * | 2020-01-02 | 2021-07-08 | 南昌欧菲光电技术有限公司 | Imaging lens group, image capturing module, and electronic device |
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