CN110261995A - A kind of optical mirror slip group - Google Patents
A kind of optical mirror slip group Download PDFInfo
- Publication number
- CN110261995A CN110261995A CN201910425930.4A CN201910425930A CN110261995A CN 110261995 A CN110261995 A CN 110261995A CN 201910425930 A CN201910425930 A CN 201910425930A CN 110261995 A CN110261995 A CN 110261995A
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- lens
- mirror slip
- image side
- object side
- refracting power
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- 230000003287 optical effect Effects 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 17
- 230000004075 alteration Effects 0.000 description 13
- 201000009310 astigmatism Diseases 0.000 description 11
- 239000006185 dispersion Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G02B13/0045—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 five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a kind of optical mirror slip group, the optical mirror slip group from object side to image side surface sequentially include the first, second, third, fourth, the 5th and the 6th lens.Improve image quality so that the entire length of optical mirror slip group shortens by the concave-convex configuration and relevant parameter control on design six-element lens surface, have good amendment color difference and image curvature ability.
Description
Technical field
The invention belongs to optical mirror slip fields, are specifically designed a kind of optical mirror slip group.
Background technique
As photography mould group is using more and more extensive, photography die set is applied to various smart electronics products, joy
Happy device, telecontrol equipment and home intelligent auxiliary system are the trend of development in science and technology of future.However with the progress for writing science and technology, mobile phone
Equal apparatus functions are strong, and consumer is also increasingly stringenter camera function demand that (for example quickly shooting, night make video recording or have a coke
Deep photo etc.).Therefore, how to reinforce periphery image quality, and make mould group maintenance miniaturization of photographing, be the target that industry is made great efforts.
It is also proposed that six chip lens groups, can provide superior image quality in this field.However, six chip lens groups are normal
The problem of seeing that material dispersion configuration is bad between lens, and influencing color difference and the image curvature of system, is not able to satisfy in field required
High-order image quality.Therefore, it is badly in need of one kind in field under conditions of meeting miniaturization, has good amendment color difference and picture
The phtographic lens of bending ability.
Summary of the invention
The present invention is bad in order to solve 6 chip lens set material dispersions configuration, and influences color difference and the image curvature of system
Problem proposes the optical mirror slip group that 6 chips of one kind have good amendment color difference and image curvature ability.
Technical solution
A kind of optical mirror slip group is arranged successively the first lens, the second lens, the third lens, the 4th lens, the 5th lens along optical axis
And the 6th lens, the described first to the 6th lens all have refracting power, each lens have towards object side and pass through light
Object side and towards image side and the image side surface that passes through imaging ray,
First lens have positive refracting power, and object side is convex surface；
Second lens have negative refracting power, and object side is convex surface；
The third lens have positive refracting power；
4th lens have negative refracting power；
5th lens have positive refracting power, and image side surface is concave surface；
6th lens have negative refracting power, and image side surface is located at optical axis near zone concave part comprising one, image side surface also includes one
Positioned at circumference near zone convex surface part；
Wherein, ∣ < 0.7 0.1 < ∣ f1/f6; 2<∣(f2+f3+f4)∣/ FL <8；
Wherein f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the 4th lens
Focal length, focal length, the FL that f6 is the 6th lens be lens set effective focal length.
Present invention further improvement is: 20≤V1≤80 and V1+V2+V3 > 60, wherein V1 is the dispersion system of the first lens
Number, V2 are the abbe number of the first lens, the abbe number that V3 is the first lens.
The present invention further improves: the 6th lens object side is aspherical with image side surface.
The present invention further improves: the first lens are glass material, and the second to the 6th lens are plastic material.
Beneficial effect
The present invention is arranged by the concave-convex curved surface of six optical mirror slips of control, and to control relevant parameter by relational expression, is had
Good amendment color difference and image curvature ability.
The content write in the description, using but the content that is not limited in table 1:
Table 1
。
Detailed description of the invention
Fig. 1 is the signal of 1 optical mirror slip group cross-section structure of embodiment.
Fig. 2 is spherical aberration in embodiment 1, astigmatism and distorts curve synoptic diagram.
Fig. 3 is each lens detailed optical tables of data trrellis diagram of optical mirror slip group in embodiment 1.
Fig. 4 is the aspherical surface data tabular drawing of optical mirror slip group in embodiment 1.
Fig. 5 is optical mirror slip group the schematic diagram of the section structure in embodiment 2.
Fig. 6 is spherical aberration in embodiment 2, astigmatism and distorts curve synoptic diagram.
Fig. 7 is each lens detailed optical tables of data trrellis diagram of optical mirror slip group in embodiment 2.
Fig. 8 is the aspherical surface data tabular drawing of optical mirror slip group in embodiment 2.
Fig. 9 is optical mirror slip group the schematic diagram of the section structure in embodiment 3.
Figure 10 is spherical aberration in embodiment 3, astigmatism and distorts curve synoptic diagram.
Figure 11 is each lens detailed optical tables of data trrellis diagram of example optical mirror slip group in embodiment 3.
Figure 12 is the aspherical surface data tabular drawing of optical mirror slip group in embodiment 3.
Specific embodiment
For embodiment 1 as shown in Figure 1, the structure of each lens of lens set is shown referring to Fig.1, the first lens 110 are glass material
Matter, the second lens 120, the third lens 130, the 4th lens 140, the 5th lens 150, the 6th lens 160 are plastic material；
100 be the aperture being arranged between object side and the first lens；Planar lens 170 is the infrared filter of glass material.
In the present embodiment:
First lens 110 have positive refracting power；Object side 111 is convex surface, image side surface 112 is concave surface.
Second lens 120 have negative refracting power；Object side 121 is convex surface, image side surface 122 is concave surface.
The third lens 130 have positive refracting power；Object side 131 have one be located at optical axis near zone convex surface part 1311, as
Side 132 has a convex surface part 1321 for being located at optical axis near zone.
4th lens 140 have negative refracting power；Object side 141 have one be located at optical axis near zone concave part 1411,
Image side surface 142 has a convex surface part 1421 for being located at optical axis near zone.
5th lens 150 have positive refracting power；Object side 151 have one be located at optical axis near zone convex surface part 1511,
Image side surface 152 includes a concave part 1521 for being located at optical axis near zone.
6th lens 160 have negative refracting power；Object side 161 includes a concave part 1611 for being located at optical axis near zone,
There are also a convex surface parts 1622 there are also a concave part 1621, circumference near zone for 162 optical axis near zone of image side surface.
The object side 111 of first lens 110 and image side surface 112, the object side 121 of the second lens 120 and image side surface 122,
The object side 131 of the third lens and the object of image side surface 132, the object side 141 of the 4th lens and image side surface 142, the 5th lens 150
It is all according to following aspheric that side 151 and image side surface 152, the object side 161 of the 6th lens and image side surface 162 total 12 aspherical
The definition of surface curve formula:
Wherein:
The radius of curvature of R expression lens surface；
Z indicates that (point for being Y apart from optical axis on aspherical and is tangential on cutting for vertex on aspherical optical axis for aspherical depth
Face, vertical range between the two)；
Y indicates the vertical range of point and optical axis on non-spherical surface；
K is circular cone coefficient (conic constant)；
Ai is the i-th rank asphericity coefficient.
Fig. 2 depicts the spherical aberration of three kinds of different wave lengths (486.1nm, 587.6nm, 656.3nm) in this implementation, astigmatism and askew
Bent curve synoptic diagram；It is wherein spherical aberration curve on the left of Fig. 2；It is astigmatism curve synoptic diagram among Fig. 2；It is distortion curve on the right side of Fig. 2
Schematic diagram, as can be seen from Figure 2 lens set has good imaging effect.
1 optical parameter of embodiment as shown in figure 3, the first lens to the object side of the 6th lens and the aspherical system of image side surface
Number is as shown in Figure 4；Obtain: the first lens object side 111 to imaging surface 180 length of length (TTL) on optical axis is
5.702mm, effective focal length (FL) are 4.855mm, and half maximum field of view angle (HFOV) is that the value of 39 degree of , Qi Zhong ∣ f1/f6 ∣ is
(value of f2+f3+f4) ∣/FL is 4.01 to 0.474 , ∣, and f-number (Fno) is 1.71, V1 59.2, and the value of V1+V2+V3 is
137.6。
2 structure of embodiment as shown in figure 5, the present embodiment indicates similar component using label similar to Example 1,
2 only are changed in mark beginning, wherein the convex surface part of each object side and image side surface and concave part are in the same manner as in Example 1 (in Fig. 5
Specific signal is not done), such as 210 object side 211 of the first lens, 210 image side surface 212 of the first lens, the rest may be inferred for remaining.Implement
Example 2 is deposited with embodiment 1 in radius of curvature, lens thickness, lens gap, the index of refraction in lens, abbe number, asphericity coefficient parameter
In difference.
Fig. 6 depicts the spherical aberration of three kinds of different wave lengths (486.1nm, 587.6nm, 656.3nm) in this implementation, astigmatism and askew
Bent curve synoptic diagram；It is wherein spherical aberration curve on the left of Fig. 6；It is astigmatism curve synoptic diagram among Fig. 6；It is distortion curve on the right side of Fig. 6
Schematic diagram, as can be seen from Figure 6 lens set has good imaging effect.
2 optical parameter of embodiment as shown in fig. 7, the first lens to the object side of the 6th lens and the aspherical system of image side surface
Number is as shown in Figure 8；Obtain: the first lens object side 211 to imaging surface 280 length of length (TTL) on optical axis is
6.0mm, effective focal length (FL) are 5.09mm, and half maximum field of view angle (HFOV) is that the value of 37.6 degree of , Qi Zhong ∣ f1/f6 ∣ is 0.470,
(value of f2+f3+f4) ∣/FL is 5.95 to ∣, and f-number (Fno) is 1.8, V1 59.4, and the value of V1+V2+V3 is 137.8.
3 structure of embodiment as shown in figure 9, the present embodiment indicates similar component using label similar to Example 1,
3 only are changed in mark beginning, wherein the convex surface part of each object side and image side surface and concave part are in the same manner as in Example 1 (in Fig. 9
Specific signal is not done), such as 310 object side 311 of the first lens, 310 image side surface 312 of the first lens, the rest may be inferred for remaining.Implement
Example 3 and embodiment 1 are in radius of curvature, lens thickness, lens gap, the index of refraction in lens, abbe number, the focal length of lens, aspherical
The parameter of coefficient exists different.
Figure 10 depict the spherical aberration of three kinds of different wave lengths (486.1nm, 587.6nm, 656.3nm) in this implementation, astigmatism and
Distort curve synoptic diagram；It is wherein spherical aberration curve on the left of Figure 10；It is astigmatism curve synoptic diagram among Figure 10；It is distortion on the right side of Figure 10
Curve synoptic diagram；As can be seen from Figure 10 lens set has good imaging effect.
3 optical parameter of embodiment is as shown in figure 11, the object sides of the first lens to the 6th lens and image side surface it is aspherical
Coefficient is as shown in Figure 12；Obtain: the first lens object side 311 to imaging surface 380 length of length (TTL) on optical axis is
5.942mm, effective focal length (FL) are 5.06mm, and half maximum field of view angle (HFOV) is that the value of 37.8 degree of , Qi Zhong ∣ f1/f6 ∣ is
(value of f2+f3+f4) ∣/FL is 5.80 to 0.46 , ∣, and f-number (Fno) is 1.77, V1 59.4, and the value of V1+V2+V3 is
137.8。
This optical mirror slip group has 6 lens, which has positive refracting power, and object side is convex surface, is conducive to receive
Hold back light；Second lens have negative refracting power, and object side is convex surface, are conducive to correct the first lens aberration；The third lens tool
There is positive refracting power, is conducive to correct the second lens aberration；4th lens have negative refracting power, are conducive to correct the 4th lens picture
Difference；5th lens have positive refracting power, and image side surface is concave surface, are conducive to correct the 4th lens aberration；6th lens have
Negative refracting power, image side surface include that one to be located at optical axis near zone concave surface, image side surface also include one to be located at circumference near zone convex surface,
Be conducive to correct the 5th lens aberration；
The object side of 6th lens with image side surface be it is aspherical, the curvature of field of optical mirror slip group entirety, astigmatism, abnormal can be corrected
Become, enhances image quality.
When satisfaction ∣ < 0.7 0.1 < ∣ f1/f6 and 2 < ∣ (when f2+f3+f4) ∣/FL < 8 condition, advantageously reduce whole light
System overall length, and guarantee image quality.
When meeting 20≤V1≤80 and V1+V2+V3 > 60 condition, be conducive to correct lens set color difference and astigmatism.
Claims (4)
1. a kind of optical mirror slip group is arranged successively the first lens, the second lens, the third lens, the 4th lens, the 5th thoroughly along optical axis
Mirror and the 6th lens, the described first to the 6th lens all have refractive index, and each lens have towards object side and keep light logical
The object side crossed and towards image side and the image side surface that passes through imaging ray, which is characterized in that
First lens have positive refracting power, and object side is convex surface；
Second lens have negative refracting power, and object side is convex surface；
The third lens have positive refracting power；
4th lens have negative refracting power；
5th lens have positive refracting power, and image side surface is concave surface；
6th lens have negative refracting power, and image side surface is located at optical axis near zone concave part comprising one, image side surface also includes one
Positioned at circumference near zone convex surface part；
Wherein, ∣ < 0.7 0.1 < ∣ f1/f6; 2<∣(f2+f3+f4)∣/ FL <8；
Wherein f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the 4th lens
Focal length, focal length, the FL that f6 is the 6th lens be lens set effective focal length.
2. a kind of optical mirror slip group according to claim 1, which is characterized in that 20≤V1≤80 and V1+V2+V3 > 60,
Middle V1 is the abbe number of the first lens, V2 is the abbe number of the first lens, the abbe number that V3 is the first lens.
3. a kind of optical mirror slip group according to claim 1 or 2, which is characterized in that the 6th lens object side and image side surface
It is aspherical.
4. a kind of optical mirror slip group according to claim 1 or 2, which is characterized in that the first lens be glass material, second
It is plastic material to the 6th lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425930.4A CN110261995B (en) | 2019-05-21 | 2019-05-21 | Optical lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425930.4A CN110261995B (en) | 2019-05-21 | 2019-05-21 | Optical lens group |
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| CN110261995A true CN110261995A (en) | 2019-09-20 |
| CN110261995B CN110261995B (en) | 2024-04-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202794680U (en) * | 2012-04-20 | 2013-03-13 | 大立光电股份有限公司 | Optical image lens system |
| US20130235473A1 (en) * | 2012-03-09 | 2013-09-12 | Largan Precision Co., Ltd. | Optical image system |
| US8908290B1 (en) * | 2013-09-30 | 2014-12-09 | Largan Precision Co., Ltd. | Optical imaging lens system, image capturing device and mobile terminal |
| JP2017187565A (en) * | 2016-04-04 | 2017-10-12 | カンタツ株式会社 | Image capturing lens |
| CN209879121U (en) * | 2019-05-21 | 2019-12-31 | 江苏光腾光学有限公司 | Optical lens group |
-
2019
- 2019-05-21 CN CN201910425930.4A patent/CN110261995B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130235473A1 (en) * | 2012-03-09 | 2013-09-12 | Largan Precision Co., Ltd. | Optical image system |
| CN103309014A (en) * | 2012-03-09 | 2013-09-18 | 大立光电股份有限公司 | Optical image system set |
| CN202794680U (en) * | 2012-04-20 | 2013-03-13 | 大立光电股份有限公司 | Optical image lens system |
| US8908290B1 (en) * | 2013-09-30 | 2014-12-09 | Largan Precision Co., Ltd. | Optical imaging lens system, image capturing device and mobile terminal |
| JP2017187565A (en) * | 2016-04-04 | 2017-10-12 | カンタツ株式会社 | Image capturing lens |
| CN209879121U (en) * | 2019-05-21 | 2019-12-31 | 江苏光腾光学有限公司 | Optical lens group |
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| CN110261995B (en) | 2024-04-16 |
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