CN110501800A - Optical lens - Google Patents
Optical lens Download PDFInfo
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- CN110501800A CN110501800A CN201810466295.XA CN201810466295A CN110501800A CN 110501800 A CN110501800 A CN 110501800A CN 201810466295 A CN201810466295 A CN 201810466295A CN 110501800 A CN110501800 A CN 110501800A
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- optical lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
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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 along optical axis by object side to image side sequentially can include: the first lens, the second lens, the third lens and the 4th lens.Wherein, the first lens can be the meniscus lens with positive light coke or negative power；Second lens can have positive light coke, and object side and image side surface are convex surface；The third lens can have negative power, and object side is concave surface, and image side surface is convex surface；4th lens can have positive light coke, and object side is convex surface, and image side surface is concave surface.According to the optical lens of the application, it can be achieved that miniaturization, high-resolution, at least one of back focal length, temperature performance is good, front end bore is small, relative illumination is high etc. beneficial effect.
Description
Technical field
This application involves a kind of optical lens, more specifically, this application involves a kind of optical lens including four lens.
Background technique
With the continuous development of auto industry active safety, the requirement to vehicle-mounted introscope head is continuously improved, introscope head
Can be used for monitoring driver fatigue situation and automatic Pilot field, due to introscope head need to be mounted on automotive interior (such as
Equal positions in instrument board), it requires that camera lens cannot be too big, therefore the small size performance of camera lens is most important, while to camera lens
Resolving power demand it is also higher and higher.Currently, requirement of the market for on-vehicle lens temperature performance is also constantly being promoted, compared with
The temperature performance of difference will lead to camera lens under high/low temperature using exception, may jeopardize personal and property safety when serious, so,
On-vehicle lens will not only guarantee the excellent performance under static state, also have good temperature performance.
Therefore, the application proposes the light of a kind of satisfaction miniaturization, the performances such as high-resolution, temperature performance is good, front end bore is small
Camera lens is learned, to be preferably applicable in the use demand of vehicle environment.
Summary of the invention
This application provides be applicable to vehicle-mounted installation, can at least overcome or part overcome it is in the prior art it is above-mentioned extremely
The optical lens of a few defect.
The one aspect of the application provides such a optical lens, and the optical lens is along optical axis by object side to image side
Sequentially can include: the first lens, the second lens, the third lens and the 4th lens.Wherein, the first lens can be for positive light coke
Or the meniscus lens of negative power；Second lens can have positive light coke, and object side and image side surface are convex surface；The third lens
There can be negative power, object side is concave surface, and image side surface is convex surface；4th lens can have positive light coke, and object side is
Convex surface, image side surface are concave surface.
In one embodiment, the object side of the first lens can be convex surface, and image side surface can be concave surface.
In another embodiment, the object side of the first lens can be concave surface, and image side surface can be convex surface.
In one embodiment, the first lens to the 4th lens can be aspherical lens.
In one embodiment, at least one lens in optical lens can be glass lens.
In one embodiment, optical lens may also include the diaphragm being arranged between the first lens and the second lens.
In one embodiment, the first lens can be Glass aspheric eyeglass.Further, the first lens can have just
It can meet between the whole group focal length value F of the focal length value F1 and optical lens of focal power and the first lens: F1/F≤16.
In one embodiment, the first lens are plastic aspherical element eyeglass.Further, the first lens can have negative light
It can meet between the whole group focal length value F of the focal length value F1 and optical lens of focal power and the first lens: F1/F≤- 45.
In one embodiment, the center of the object side of the first lens to optical lens imaging surface on optical axis away from
It can meet between TTL and the whole group focal length value F of optical lens: TTL/F≤3.5.
In one embodiment, conditional can be met: D/H/FOV≤0.025, wherein FOV is the maximum of optical lens
Field angle；D is the maximum clear aperture of the first lens object side corresponding to the maximum field of view angle of optical lens；And H is light
Learn image height corresponding to the maximum field of view angle of camera lens.
In one embodiment, the object center side radius of curvature R 6 and image side surface center curvature radius R7 of the third lens
And it can meet between the center thickness d3 of the third lens: 0.1≤| R7 |/(| R6 |+d3)≤1.1.
In one embodiment, the object center side radius of curvature R 8 and image side surface center curvature radius R9 of the 4th lens
And the 4th lens center thickness d4 between can meet: 0.2≤R8/ (R9+d4)≤1.2.
In one embodiment, the object center side radius of curvature R 1 of the first lens and image side surface center curvature radius R2
Between can meet: 0.2≤R2/R1≤1.2.
In one embodiment, can meet between the focal length value F2 of the second lens and the whole group focal length value F of optical lens:
F2/F≤3。
In one embodiment, can meet between the whole group focal length value F of the focal length value F3 and optical lens of the third lens:
F3/F≥-50。
In one embodiment, can meet between the focal length value F4 of the 4th lens and the whole group focal length value F of optical lens:
F4/F≤8。
The another aspect of the application provides such a optical lens, and the optical lens is along optical axis by object side to image side
Sequentially can include: the first lens, the second lens, the third lens and the 4th lens.Wherein, the first lens can be for positive light coke
Or the meniscus lens of negative power；Second lens and the 4th lens can have positive light coke；The third lens can have negative light focus
Degree；And first lens at least one of the 4th lens can be glass lens, wherein the maximum field of view angle of optical lens
FOV, optical lens maximum field of view angle corresponding to the first lens object side maximum clear aperture D and optical lens most
Conditional can be met between image height H corresponding to big field angle: D/H/FOV≤0.025.
In one embodiment, the object side of the first lens can be convex surface, and image side surface can be concave surface.
In another embodiment, the object side of the first lens can be concave surface, and image side surface can be convex surface.
In one embodiment, the object side of the second lens and image side surface can be convex surface.
In one embodiment, the object side of the third lens can be concave surface, and image side surface can be convex surface.
In one embodiment, the object side of the 4th lens can be convex surface, and image side surface can be concave surface.
In one embodiment, the first lens to the 4th lens can be aspherical lens.
In one embodiment, optical lens may also include the diaphragm being arranged between the first lens and the second lens.
In one embodiment, the first lens can be Glass aspheric eyeglass.Further, the first lens can have just
It can meet between the whole group focal length value F of the focal length value F1 and optical lens of focal power and the first lens: F1/F≤16.
In one embodiment, the first lens are plastic aspherical element eyeglass.Further, the first lens can have negative light
It can meet between the whole group focal length value F of the focal length value F1 and optical lens of focal power and the first lens: F1/F≤- 45.
In one embodiment, the center of the object side of the first lens to optical lens imaging surface on optical axis away from
It can meet between TTL and the whole group focal length value F of optical lens: TTL/F≤3.5.
In one embodiment, the object center side radius of curvature R 6 and image side surface center curvature radius R7 of the third lens
And it can meet between the center thickness d3 of the third lens: 0.1≤| R7 |/(| R6 |+d3)≤1.1.
In one embodiment, the object center side radius of curvature R 8 and image side surface center curvature radius R9 of the 4th lens
And the 4th lens center thickness d4 between can meet: 0.2≤R8/ (R9+d4)≤1.2.
In one embodiment, the object center side radius of curvature R 1 of the first lens and image side surface center curvature radius R2
Between can meet: 0.2≤R2/R1≤1.2.
In one embodiment, can meet between the focal length value F2 of the second lens and the whole group focal length value F of optical lens:
F2/F≤3。
In one embodiment, can meet between the whole group focal length value F of the focal length value F3 and optical lens of the third lens:
F3/F≥-50。
In one embodiment, can meet between the focal length value F4 of the 4th lens and the whole group focal length value F of optical lens:
F4/F≤8。
The application uses such as four lens, by the shape of optimal setting eyeglass, the light focus of each eyeglass of reasonable distribution
Degree etc., realizes that the high pixel of optical lens, miniaturization, back focal length, temperature performance is good, front end bore is small, relative illumination is high, night vision
At least one of beneficial effects such as effect is good.
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.
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.Surface in each lens near object is known as object side,
Surface in each lens near imaging surface is known as image side 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.
Optical lens according to the application illustrative embodiments includes such as four lens with focal power, i.e., and first
Lens, the second lens, the third lens and the 4th lens.This four lens along optical axis from object side to image side sequential.
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 be the meniscus lens with positive light coke or negative power.First lens are set as meniscus shape energy
It is enough to collect light as much as possible, so that light is entered rear optical system.
Second lens can have positive light coke, and object side and image side surface can be convex surface.Second lens can be by front mirror
The light that piece is collected is compressed, and makes light smooth transition to rear optical system.
The third lens can have negative power, and object side can be concave surface, and image side surface can be convex surface.The focal length of the third lens
It is set as negative value, so that the third lens can be made light smooth transition to rear optical system, be conducive to promote solution with divergent rays
As ability, improve thermal compensation.
4th lens can have positive light coke, and object side can be convex surface, and image side surface can be concave surface.4th lens can be by
The light that three lens are collected carries out convergence appropriate, this helps to reduce system optics overall length.
In the exemplary embodiment, the light for limiting light beam can be set between such as the first lens and the second lens
Door screen, to further increase the image quality of camera lens.When diaphragm to be set between the first lens and the second lens, before can collecting
Light afterwards shortens optical system overall length, reduces front and back lens set bore.
In the exemplary embodiment, between the optics total length TTL of optical lens and the whole group focal length value F of optical lens
It can meet: TTL/F≤3.5, it is more desirable that TTL and F can further meet TTL/F≤3.Meet conditional TTL/F≤3.5, it can
Realize the small size performance of camera lens.
In the exemplary embodiment, the maximum field of view angle FOV of optical lens, corresponding to optical lens maximum field of view angle
It can meet between image height H corresponding to the maximum clear aperture D of first lens object side and optical lens maximum field of view angle: D/
H/FOV≤0.025, it is more desirable that D, H and FOV can further meet D/H/FOV≤0.02.Meet conditional D/H/FOV≤
0.025, it is ensured that the front end of camera lens is small-bore.
In the exemplary embodiment, the object center side radius of curvature R 6 and image side surface center curvature radius of the third lens
It can meet 0.1 between R7 and the center thickness d3 of the third lens≤| R7 |/(| R6 |+d3)≤1.1, it is more desirable that further
It can meet 0.2≤| R7 |/(| R6 |+d3)≤1.The design of special shape as the third lens, is conducive to lifting system solution picture energy
Power.
In the exemplary embodiment, the object center side radius of curvature R 8 and image side surface center curvature radius of the 4th lens
It can meet between the center thickness d4 of R9 and the 4th lens: 0.2≤R8/ (R9+d4)≤1.2, it is more desirable that can further expire
0.4≤R8/ of foot (R9+d4)≤1.2.The design of special shape as 4th lens, is conducive to lifting system resolving power.
In the exemplary embodiment, the object center side radius of curvature R 1 of the first lens and image side surface center curvature radius
It can meet between R2: 0.2≤R2/R1≤1.2, it is more desirable that can further meet 0.5≤R2/R1≤1.By setting so that
The object side of first lens and the radius of curvature of image side surface are close, help that high angle scattered light must be collected as far as possible.
In the exemplary embodiment, can expire between the focal length value F2 of the second lens and the whole group focal length value F of optical lens
Foot: F2/F≤3, it is more desirable that can further meet F2/F≤2.
In the exemplary embodiment, can expire between the whole group focal length value F of the focal length value F3 and optical lens of the third lens
Foot: F3/F >=-50, it is more desirable that can further meet F3/F >=-40.
In the exemplary embodiment, can expire between the focal length value F4 of the 4th lens and the whole group focal length value F of optical lens
Foot: F4/F≤8, it is more desirable that can further meet F4/F≤6.
By each power of lens in reasonable distribution system, system resolving power can be improved, reduce optics overall length.
In the exemplary embodiment, the first lens to the 4th lens are aspherical lens.The characteristics of aspherical lens
It is: is consecutive variations from center of lens to periphery curvature.And have constant curvature from center of lens to periphery spheric glass not
Together, aspherical lens have more preferably radius of curvature characteristic, have the advantages that improve and distort aberration and improvement astigmatic image error.Using
After aspherical lens, the aberration occurred when imaging can be eliminated as much as possible, to promote the image quality of camera lens.
Eyeglass used by optical lens can be the eyeglass of plastic material, can also be the eyeglass of glass material.Due to
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
The optic back focal variable quantity of camera lens can be caused larger.And the eyeglass of glass material is used, temperature can be reduced to burnt after lens optical
Influence.It in the exemplary embodiment, is glass lens according at least one lens in the optical lens of the application.It is ideal
Glass lens can be used according to the first lens of the optical lens of the application in ground, to enhance table of the camera lens in high/low temperature
It is existing, reduce influence of the environment to system entirety, the overall performance of improving optical camera lens.
Therefore, in one example, the first lens can be the Glass aspheric eyeglass and first with positive light coke
It can meet between the focal length value F1 of lens and the whole group focal length value F of optical lens: F1/F≤16, it is more desirable that can further expire
Sufficient F1/F≤12.Such setting can be conducive to improve thermal compensation, guarantee the temperature performance of camera lens.In another example,
One lens can for plastic aspherical element eyeglass and the first lens with negative power focal length value F1 and optical lens it is whole
It can meet between group focal length value F: F1/F≤- 45, it is more desirable that can further meet F1/F≤- 60.The big coke of first lens
Away from can be used for improving thermal compensation, guarantee the temperature performance of camera lens.
Good temperature performance ensure that by the setting of the larger focal length of the first lens according to the optical lens of the application, lead to
The setting of the third lens/the 4th lens special shape is crossed, excellent resolving power is realized, passes through each lens of reasonable distribution
Focal power and face type, the airspace between the center thickness of each lens and each lens can make camera lens have miniaturization, Gao Xie
As, at least one of beneficial effects such as temperature performance is good, back focal length, front end bore is small, relative illumination is high, to be preferably applicable in
The conditional application requirement of installation site (such as vehicle-mounted installation).
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 four lens as an example in embodiment, but the optical lens is not limited to include four 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, optical lens is along optical axis from object side to sequentially including the first lens L1, the second lens at image side
L2, the third lens L3 and the 4th lens L4.
First lens L1 is the meniscus lens with negative power, and object side S1 is convex surface, and image side surface S2 is concave surface, is adopted
Use glass lens.
Second lens L2 is the biconvex lens with positive light coke, and object side S4 and image side surface S5 are convex surface.
The third lens L3 is the meniscus lens with negative power, and object side S6 is concave surface, and image side surface S7 is convex surface.
4th lens L4 is the meniscus lens with positive light coke, and object side S8 is convex surface, and image side surface S9 is concave surface.
In addition, the first lens L1 to the 4th lens L4 is aspherical lens, and their own object side and image side surface
It is aspherical.
Optionally, which may also include the optical filter L5 with object side S10 and image side surface S11 and has object side
The protection lens L6 of face S12 and image side surface S13.Optical filter L5 can be used for correcting color error ratio.Protection lens L6 can be used for protecting
Positioned at the image sensor chip of imaging surface IMA.Light from object sequentially passes through each surface S1 to S13 and is ultimately imaged and is being imaged
On the IMA of face.
In the optical lens of the present embodiment, diaphragm STO can be set between the first lens L1 and the second lens L2 to mention
High imaging 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
The present embodiment uses four 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, high-resolution, temperature performance it is good, after
Focal length, at least one of the beneficial effects such as front end bore is small, relative illumination is high.Each aspherical face type Z is limited by following formula:
Wherein, Z 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
conic；A, B, C, D, E are high-order coefficient.The following table 2 show the aspherical lens surface S1 that can be used in embodiment 1,
The circular cone coefficient k and high-order coefficient A, B, C, D, E, F and G of S2, S4-S9.
Table 2
The following table 3 gives the object center side curvature of the whole group focal length value F of the optical lens of embodiment 1, the third lens L3
Radius R6 and image side surface center curvature radius R7, optical lens optics total length TTL (that is, from the object side of the first lens L1
Distance on the center of S1 to the axis of imaging surface S14), innermost being in the object center side radius of curvature R 8 of the 4th lens L4 and image side surface
Rate radius R9, the center thickness d3 of the third lens L3, the center thickness d4 of the 4th lens L4, the first lens L1 to the 4th lens L4
Focal length value F1-F4, the first lens L1 object center side radius of curvature R 1 and image side surface center curvature radius R2, optical lens
The maximum clear aperture D of the object side S1 of first lens L1 corresponding to maximum field of view angle, angle institute, optical lens maximum field of view are right
The maximum field of view angle FOV of the image height H and optical lens answered.
Table 3
| F(mm) | 3.8037 | F3(mm) | -80.0424 |
| R6(mm) | -1.2000 | F4(mm) | 12.8631 |
| R7(mm) | -1.5300 | R1(mm) | 26.2000 |
| TTL(mm) | 9.5129 | R2(mm) | 21.8000 |
| R8(mm) | 1.5500 | D(mm) | 4.2000 |
| R9(mm) | 1.5000 | H(mm) | 3.6660 |
| d3(mm) | 0.8600 | FOV(°) | 63 |
| d4(mm) | 0.9000 | ||
| F1(mm) | -262.3238 | ||
| F2(mm) | 4.8401 |
In the present embodiment, the object center side radius of curvature R 6 of the third lens L3 and image side surface center curvature radius R7 with
And meet between the center thickness d3 of the third lens L3 | R7 |/(| R6 |+d3)=0.743；The object center side of 4th lens L4
Meet R8/ (R9+d4) between radius of curvature R 8 and the center thickness d4 of image side surface center curvature radius R9 and the 4th lens L4
=0.646；Meet R2/R1=between the object center side radius of curvature R 1 and image side surface center curvature radius R2 of first lens L1
0.832；Meet TTL/F=2.501 between the optics total length TTL of optical lens and the whole group focal length value F of optical lens；Optics
The maximum of the object side S1 of first lens L1 corresponding to the maximum field of view angle FOV of camera lens, optical lens maximum field of view angle is logical
Meet D/H/FOV=0.018 between image height H corresponding to optical port diameter D and optical lens maximum field of view angle；First lens L1's
Meet F1/F=-68.965 between focal length value F1 and the whole group focal length value F of optical lens；The focal length value F2 and light of second lens L2
It learns and meets F2/F=1.272 between the whole group focal length value F of camera lens；The focal length value F3 of the third lens L3 and the whole group of optical lens are burnt
Away from meeting F3/F=-21.043 between value F；And the 4th lens L4 focal length value F4 and optical lens whole group focal length value F it
Between meet F4/F=3.382.
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 is along optical axis from object side to sequentially including the first lens L1, the second lens at image side
L2, the third lens L3 and the 4th lens L4.
First lens L1 is the meniscus lens with negative power, and object side S1 is convex surface, and image side surface S2 is concave surface, is adopted
Use glass lens.
Second lens L2 is the biconvex lens with positive light coke, and object side S4 and image side surface S5 are convex surface.
The third lens L3 is the meniscus lens with negative power, and object side S6 is concave surface, and image side surface S7 is convex surface.
4th lens L4 is the meniscus lens with positive light coke, and object side S8 is convex surface, and image side surface S9 is concave surface.
In addition, the first lens L1 to the 4th lens L4 is aspherical lens, and their own object side and image side surface
It is aspherical.
Optionally, which may also include the optical filter L5 with object side S10 and image side surface S11 and has object side
The protection lens L6 of face S12 and image side surface S13.Optical filter L5 can be used for correcting color error ratio.Protection lens L6 can be used for protecting
Positioned at the image sensor chip of imaging surface IMA.Light from object sequentially passes through each surface S1 to S13 and is ultimately imaged and is being imaged
On the IMA of face.
In the optical lens of the present embodiment, diaphragm STO can be set between the first lens L1 and the second lens L2 to mention
High imaging quality.
The following table 4 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 5, which is shown, can be used for aspheric in embodiment 2
The circular cone coefficient k and high-order coefficient A, B, C, D, E, F and G of face lens surface S1, S2, S4-S9.The following table 6 gives implementation
The whole group focal length value F of the optical lens of example 2, the object center side radius of curvature R 6 of the third lens L3 and image side surface curvature of centre half
Diameter R7, optical lens optics total length TTL (that is, from the center to the axis of imaging surface S14 of the object side S1 of the first lens L1
Distance), the center of the object center side radius of curvature R 8 of the 4th lens L4 and image side surface center curvature radius R9, the third lens L3
Thickness d 3, the center thickness d4 of the 4th lens L4, the focal length value F1-F4 of the first lens L1 to the 4th lens L4, the first lens L1
Object center side radius of curvature R 1 and image side surface center curvature radius R2, optical lens maximum field of view angle corresponding to first thoroughly
Image height H corresponding to the maximum clear aperture D of the object side S1 of mirror L1, optical lens maximum field of view angle and optical lens are most
Big field angle FOV.
Table 4
| Face number | Radius of curvature R | Thickness T | Refractive index Nd | Abbe number Vd |
| 1 | 25.3743 | 1.0500 | 1.52 | 56.30 |
| 2 | 21.1724 | 1.1500 | ||
| STO | It is infinite | 0.1080 | ||
| 4 | 46.3667 | 1.9300 | 1.58 | 61.1 |
| 5 | -2.9500 | 0.4900 | ||
| 6 | -1.2055 | 0.8530 | 1.53 | 56.22 |
| 7 | -1.5288 | 0.1000 | ||
| 8 | 1.5600 | 0.9000 | 1.65 | 23.50 |
| 9 | 1.5000 | 1.1500 | ||
| 10 | It is infinite | 0.5500 | 1.53 | 64.20 |
| 11 | It is infinite | 0.5117 | ||
| 12 | It is infinite | 0.4000 | 1.53 | 64.20 |
| 13 | It is infinite | 0.3185 | ||
| IMA | It is infinite |
Table 5
Table 6
| F(mm) | 3.8166 | F3(mm) | -113.3916 |
| R6(mm) | -1.2055 | F4(mm) | 13.0484 |
| R7(mm) | -1.5288 | R1(mm) | 25.3743 |
| TTL(mm) | 9.5112 | R2(mm) | 21.1724 |
| R8(mm) | 1.5600 | D(mm) | 4.2000 |
| R9(mm) | 1.5000 | H(mm) | 3.8720 |
| d3(mm) | 0.8530 | FOV(°) | 63 |
| d4(mm) | 0.9000 | ||
| F1(mm) | -273.3363 | ||
| F2(mm) | 4.9327 |
In the present embodiment, the object center side radius of curvature R 6 of the third lens L3 and image side surface center curvature radius R7 with
And meet between the center thickness d3 of the third lens L3 | R7 |/(| R6 |+d3)=0.743；The object center side of 4th lens L4
Meet R8/ (R9+d4) between radius of curvature R 8 and the center thickness d4 of image side surface center curvature radius R9 and the 4th lens L4
=0.650；Meet R2/R1=between the object center side radius of curvature R 1 and image side surface center curvature radius R2 of first lens L1
0.834；Meet TTL/F=2.492 between the optics total length TTL of optical lens and the whole group focal length value F of optical lens；Optics
The maximum of the object side S1 of first lens L1 corresponding to the maximum field of view angle FOV of camera lens, optical lens maximum field of view angle is logical
Meet D/H/FOV=0.017 between image height H corresponding to optical port diameter D and optical lens maximum field of view angle；First lens L1's
Meet F1/F=-71.617 between focal length value F1 and the whole group focal length value F of optical lens；The focal length value F2 and light of second lens L2
It learns and meets F2/F=1.292 between the whole group focal length value F of camera lens；The focal length value F3 of the third lens L3 and the whole group of optical lens are burnt
Away from meeting F3/F=-29.710 between value F；And the 4th lens L4 focal length value F4 and optical lens whole group focal length value F it
Between meet F4/F=3.419.
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 is along optical axis from object side to sequentially including the first lens L1, the second lens at image side
L2, the third lens L3 and the 4th lens L4.
First lens L1 is the meniscus lens with positive light coke, and object side S1 is concave surface, and image side surface S2 is convex surface, is adopted
Use glass lens.
Second lens L2 is the biconvex lens with positive light coke, and object side S4 and image side surface S5 are convex surface.
The third lens L3 is the meniscus lens with negative power, and object side S6 is concave surface, and image side surface S7 is convex surface.
4th lens L4 is the meniscus lens with positive light coke, and object side S8 is convex surface, and image side surface S9 is concave surface.
In addition, the first lens L1 to the 4th lens L4 is aspherical lens, and their own object side and image side surface
It is aspherical.
Optionally, which may also include the optical filter L5 with object side S10 and image side surface S11 and has object side
The protection lens L6 of face S12 and image side surface S13.Optical filter L5 can be used for correcting color error ratio.Protection lens L6 can be used for protecting
Positioned at the image sensor chip of imaging surface IMA.Light from object sequentially passes through each surface S1 to S13 and is ultimately imaged and is being imaged
On the IMA of face.
In the optical lens of the present embodiment, diaphragm STO can be set between the first lens L1 and the second lens L2 to mention
High imaging quality.
The following table 7 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 8, which is shown, can be used for aspheric in embodiment 3
The circular cone coefficient k and high-order coefficient A, B, C, D, E, F and G of face lens surface S1, S2, S4-S9.The following table 9 gives implementation
The whole group focal length value F of the optical lens of example 3, the object center side radius of curvature R 6 of the third lens L3 and image side surface curvature of centre half
Diameter R7, optical lens optics total length TTL (that is, from the center to the axis of imaging surface S14 of the object side S1 of the first lens L1
Distance), the center of the object center side radius of curvature R 8 of the 4th lens L4 and image side surface center curvature radius R9, the third lens L3
Thickness d 3, the center thickness d4 of the 4th lens L4, the focal length value F1-F4 of the first lens L1 to the 4th lens L4, the first lens L1
Object center side radius of curvature R 1 and image side surface center curvature radius R2, optical lens maximum field of view angle corresponding to first thoroughly
Image height H corresponding to the maximum clear aperture D of the object side S1 of mirror L1, optical lens maximum field of view angle and optical lens are most
Big field angle FOV.
Table 7
| Face number | Radius of curvature R | Thickness T | Refractive index Nd | Abbe number Vd |
| 1 | -10.5400 | 2.1200 | 1.50 | 55.47 |
| 2 | -7.2000 | 0.2400 | ||
| STO | It is infinite | 0.0604 | ||
| 4 | 28.0000 | 2.0700 | 1.59 | 61.1 |
| 5 | -3.1400 | 0.5900 | ||
| 6 | -1.1400 | 0.9141 | 1.51 | 57.00 |
| 7 | -1.5240 | 0.1000 | ||
| 8 | 1.6300 | 0.8000 | 1.68 | 23.53 |
| 9 | 1.5800 | 1.5615 | ||
| 10 | It is infinite | 0.5500 | 1.52 | 64.21 |
| 11 | It is infinite | 0.2500 | ||
| 12 | It is infinite | 0.4000 | 1.52 | 64.21 |
| 13 | It is infinite | 0.2611 | ||
| IMA | It is infinite |
Table 8
Table 9
| F(mm) | 3.8108 | F3(mm) | -43.9841 |
| R6(mm) | -1.1400 | F4(mm) | 14.7516 |
| R7(mm) | -1.5240 | R1(mm) | -10.5400 |
| TTL(mm) | 9.9170 | R2(mm) | -7.2000 |
| R8(mm) | 1.6300 | D(mm) | 3.6000 |
| R9(mm) | 1.5800 | H(mm) | 4.5740 |
| d3(mm) | 0.9141 | FOV(°) | 63 |
| d4(mm) | 0.8000 | ||
| F1(mm) | 38.2632 | ||
| F2(mm) | 4.9866 |
In the present embodiment, the object center side radius of curvature R 6 of the third lens L3 and image side surface center curvature radius R7 with
And meet between the center thickness d3 of the third lens L3 | R7 |/(| R6 |+d3)=0.742；The object center side of 4th lens L4
Meet R8/ (R9+d4) between radius of curvature R 8 and the center thickness d4 of image side surface center curvature radius R9 and the 4th lens L4
=0.685；Meet R2/R1=between the object center side radius of curvature R 1 and image side surface center curvature radius R2 of first lens L1
0.683；Meet TTL/F=2.602 between the optics total length TTL of optical lens and the whole group focal length value F of optical lens；Optics
The maximum of the object side S1 of first lens L1 corresponding to the maximum field of view angle FOV of camera lens, optical lens maximum field of view angle is logical
Meet D/H/FOV=0.012 between image height H corresponding to optical port diameter D and optical lens maximum field of view angle；First lens L1's
Meet F1/F=10.041 between focal length value F1 and the whole group focal length value F of optical lens；The focal length value F2 and light of second lens L2
It learns and meets F2/F=1.309 between the whole group focal length value F of camera lens；The focal length value F3 of the third lens L3 and the whole group of optical lens are burnt
Away from meeting F3/F=-11.542 between value F；And the 4th lens L4 focal length value F4 and optical lens whole group focal length value F it
Between meet F4/F=3.871.
To sum up, embodiment 1 to embodiment 3 meets relationship shown in following table 10 respectively.
Table 10
| Conditional/embodiment | 1 | 2 | 3 |
| |R7|/(|R6|+d3) | 0.743 | 0.743 | 0.742 |
| R8/(R9+d4) | 0.646 | 0.650 | 0.685 |
| R2/R1 | 0.832 | 0.834 | 0.683 |
| TTL/F | 2.501 | 2.492 | 2.602 |
| D/H/FOV | 0.018 | 0.017 | 0.012 |
| F1/F | -68.965 | -71.617 | 10.041 |
| F2/F | 1.272 | 1.292 | 1.309 |
| F3/F | -21.043 | -29.710 | -11.542 |
| F4/F | 3.382 | 3.419 | 3.871 |
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 (19)
- It by object side to image side sequentially include: the first lens, the second lens, the third lens and the 4th along optical axis 1. optical lens Lens,It is characterized in that,First lens are the meniscus lens with positive light coke or negative power；Second lens have positive light coke, and object side and image side surface are convex surface；The third lens have negative power, and object side is concave surface, and image side surface is convex surface；4th lens have positive light coke, and object side is convex surface, and image side surface is concave surface.
- 2. optical lens according to claim 1, which is characterized in that the object side of first lens is convex surface, image side Face is concave surface.
- 3. optical lens according to claim 1, which is characterized in that the object side of first lens is concave surface, image side Face is convex surface.
- 4. optical lens according to claim 1, which is characterized in that first lens to the 4th lens are non- Spheric glass.
- 5. optical lens according to claim 1, which is characterized in that at least one lens in the optical lens are glass Glass eyeglass.
- 6. optical lens according to claim 1, which is characterized in that further include setting in first lens and described the Diaphragm between two lens.
- 7. optical lens according to claim 1, which is characterized in that first lens are Glass aspheric eyeglass.
- 8. optical lens according to claim 7, which is characterized in that first lens have positive light coke, Yi Jisuo It states and meets between the focal length value F1 of the first lens and the whole group focal length value F of the optical lens: F1/F≤16.
- 9. optical lens according to claim 1, which is characterized in that first lens are plastic aspherical element eyeglass.
- 10. optical lens according to claim 9, which is characterized in that first lens have negative power, Yi Jisuo It states and meets between the focal length value F1 of the first lens and the whole group focal length value F of the optical lens: F1/F≤- 45.
- 11. optical lens according to claim 1 to 10, which is characterized in that the object side of first lens Center to distance TTL of the imaging surface on the optical axis of the optical lens and whole group focal length value F of the optical lens Between meet: TTL/F≤3.5.
- 12. optical lens according to claim 1 to 10, which is characterized in that meet conditional: D/H/FOV≤ 0.025,Wherein, FOV is the maximum field of view angle of the optical lens；D is the maximum clear aperture of the first lens object side corresponding to the maximum field of view angle of the optical lens；AndH is image height corresponding to the maximum field of view angle of the optical lens.
- 13. optical lens according to claim 1 to 10, which is characterized in that the object side of the third lens Meet between center curvature radius R6 and image side surface center curvature radius R7 and the center thickness d3 of the third lens: 0.1 ≤|R7|/(|R6|+d3)≤1.1。
- 14. optical lens according to claim 1 to 10, which is characterized in that the object side of the 4th lens Meet between the center thickness d4 of center curvature radius R8 and image side surface center curvature radius R9 and the 4th lens: 0.2 ≤R8/(R9+d4)≤1.2。
- 15. optical lens according to claim 1 to 10, which is characterized in that the object side of first lens Meet between center curvature radius R1 and image side surface center curvature radius R2: 0.2≤R2/R1≤1.2.
- 16. optical lens according to claim 1 to 10, which is characterized in that the focal length value of second lens Meet between F2 and the whole group focal length value F of the optical lens: F2/F≤3.
- 17. optical lens according to claim 1 to 10, which is characterized in that the focal length value of the third lens Meet between F3 and the whole group focal length value F of the optical lens: F3/F >=-50.
- 18. optical lens according to claim 1 to 10, which is characterized in that the focal length value of the 4th lens Meet between F4 and the whole group focal length value F of the optical lens: F4/F≤8.
- It by object side to image side sequentially include: the first lens, the second lens, the third lens and the 4th along optical axis 19. optical lens Lens,It is characterized in that,First lens are the meniscus lens with positive light coke or negative power；Second lens and the 4th lens all have positive light coke；The third lens have negative power；AndFirst lens at least one of the 4th lens are glass lens,Wherein, the maximum field of view angle FOV of the optical lens, described first corresponding to the maximum field of view angle of the optical lens Meet item between image height H corresponding to the maximum clear aperture D of lens object side and the maximum field of view angle of the optical lens Part formula: D/H/FOV≤0.025.
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| CN115185070A (en) * | 2022-07-28 | 2022-10-14 | 协益电子（苏州）有限公司 | Glass-plastic mixed vehicle-mounted monitoring lens and electronic equipment |
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| CN102466864A (en) * | 2010-11-15 | 2012-05-23 | 大立光电股份有限公司 | Optical photographic system |
| CN202837658U (en) * | 2011-10-28 | 2013-03-27 | 株式会社光学逻辑 | Shooting camera lens |
| CN105589183A (en) * | 2014-10-24 | 2016-05-18 | 玉晶光电(厦门)有限公司 | Portable electronic device and optical imaging lens thereof |
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|---|---|---|---|---|
| CN102466864A (en) * | 2010-11-15 | 2012-05-23 | 大立光电股份有限公司 | Optical photographic system |
| CN202837658U (en) * | 2011-10-28 | 2013-03-27 | 株式会社光学逻辑 | Shooting camera lens |
| CN105589183A (en) * | 2014-10-24 | 2016-05-18 | 玉晶光电(厦门)有限公司 | Portable electronic device and optical imaging lens thereof |
| CN105589183B (en) * | 2014-10-24 | 2018-01-09 | 玉晶光电(厦门)有限公司 | Portable electronic devices and its optical imaging lens |
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| CN115185070A (en) * | 2022-07-28 | 2022-10-14 | 协益电子（苏州）有限公司 | Glass-plastic mixed vehicle-mounted monitoring lens and electronic equipment |
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