CN106932885A - A kind of fish eye lens - Google Patents
A kind of fish eye lens Download PDFInfo
- Publication number
- CN106932885A CN106932885A CN201710233199.6A CN201710233199A CN106932885A CN 106932885 A CN106932885 A CN 106932885A CN 201710233199 A CN201710233199 A CN 201710233199A CN 106932885 A CN106932885 A CN 106932885A
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- Prior art keywords
- lens
- fish eye
- fish
- focal length
- eye
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 43
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000000571 coke Substances 0.000 claims abstract description 11
- 230000005499 meniscus Effects 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 abstract description 5
- 230000004075 alteration Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000009738 saturating Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- 241000700608 Sagitta Species 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- 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
- G02B13/005—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having spherical lenses only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention provides a kind of fish eye lens, including the first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens sequentially configured by thing side to image side along optical axis；First lens are the meniscus shaped lens with negative power, and its concave surface is towards image side；Second lens are the double concave lens with positive light coke；3rd lens have the lenticular lens of positive light coke；4th lens are the double concave lens with negative power；3rd lens and the 4th lens are glued together；5th lens are the lenticular lens with positive light coke.The fish eye lens can match the smart machines such as mobile phone, panel computer itself cameras, shoot visual angle scope up to more than 180 °, without dark angle, purple boundary, shoot that image quality center is very outstanding to edge, and optical distortion is up to 100%.
Description
Technical field
The present invention relates to lens technology field, and in particular to a kind of fish eye lens.
Background technology
Mobile phone has become the necessity of current people's life, recently as the continuous of mobile phone camera photo-sensitive cell size
The addition of the technology such as increase and phase focusing and optical anti-vibration, mobile phone gradually instead of traditional digital camera as people day
The first-selection often taken pictures.
But, due to being limited by own vol and weight, its camera is essentially tight shot to mobile phone, focal length and regards
Field limited angle.Mobile phone field of view angle is generally 70 degree or so in the market, it is difficult to take with super large visual angle and super large
Photo of the distortion with impulsive force.And extraordinary effect photo can be taken for some big scene fish eye lenses,
The scene such as such as big marine, mountain top and city high rise building and grassland.Although cell phone software is also processed into fish eye effect function,
But cell phone software is processed into the fish eye effect function just chicken ribs as digital zoom function.Therefore, generally needing to pacify for mobile phone
The additional fish eye lens of dress.
In the prior art, the Chinese utility model patent of Publication No. CN204101803U discloses a kind of with aspherical
The additional fish eye lens of mobile phone of mirror, including be by meniscus, concave-convex lens, non-spherical lens and fixed sheet metal composition, institute
The meniscus stated, concave-convex lens, non-spherical lens is all encapsulated in fixed seat；It is characterized in that：It is described meniscus, recessed
Convex lens, non-spherical lens are from left to right arranged in order, and the distance between three is with just by 180 ° of the meniscus left side
It is defined on the mobile lens that light converges on the right of non-spherical lens.In prior art patent, only realize the light in 180 °
Mobile lens are converged to, realizes that 180 ° of ultra-large vision fields shoot, but the additional fish eye lens does not do necessary to light and color
Correction, imaging image quality is poor.
The content of the invention
Therefore, the technical problem to be solved in the present invention be overcome existing additional fish eye lens not done to light and color must
The correction wanted, imaging image quality is poor, so as to provide a kind of fish eye lens.
Therefore, the invention provides a kind of fish eye lens, including along optical axis by thing side to image side sequentially configure it is first saturating
Mirror, the second lens, the 3rd lens, the 4th lens and the 5th lens；First lens are that the falcate with negative power is saturating
Mirror, its concave surface is towards image side；Second lens are the double concave lens with positive light coke；3rd lens have positive light
The lenticular lens of focal power；4th lens are the double concave lens with negative power；3rd lens and the 4th saturating
Mirror is glued together；5th lens are the lenticular lens with positive light coke.
Optionally, the fish eye lens is satisfied the following conditional expression：
- 0.70 ＜ f1-2/f3-5＜ -0.50；
5.5 ＜ f1/f1-2＜ 6.5；
3.0 ＜ f3-4/f3-5＜ 4.0；
f>600；
Wherein, f1-2It is the combined focal length of first lens and second lens, f3-5It is the 3rd lens, described
The combined focal length of the 4th lens and the 5th lens, f1It is the focal length of first lens, f3-4It is the 3rd lens and institute
The combined focal length of the 4th lens is stated, f is the fish-eye effective focal length.
Optionally, the refractive index Nd and Abbe number of the d light of first lens, second lens and the 3rd lens
Vd meets following relation：The ＜ Vd ＜ 60 of 1.68 ＜ Nd ＜ 1.90,40.
Optionally, the Abbe number Vd of the 5th lens meets following relation：65 ＜ Vd ＜ 75.
Optionally, first lens to the 5th lens are spheric glass lens.
Optionally, first lens to the external diameter of the 5th lens is reduced successively.
Optionally, the external diameter of first lens is less than 25mm, and the fish-eye overall length is less than 28mm.
Optionally, the fish eye lens is the auxiliary lens of mobile phone, and the fish eye lens coordinates the camera of the mobile phone
Use.
Technical solution of the present invention, has the following advantages that：
1. a kind of fish eye lens that the present invention is provided, is designed using 54 groups of optical textures.Wherein the first lens and second
Lens are negative-power lenses, and first group and second group of composition optical texture, with correction light angle effect, realizing will
Mobile phone visual angle is extended to more than 180 degree from degree more than 70, so as to achieve over the super large shooting angle of 180 degree.3rd group by
3rd lens and the 4th lens are mainly the fish-eye aberration of correction, so as to ensure to shoot oversized angle picture color guarantor simultaneously
Hold pure, solve the color defects such as the purple boundary of general camera lens or red side.4th group of lens are lenticular positive power lens, mainly
It is correction light, more preferably matches the camera of mobile phone itself, reduces damage of the fish eye lens light to mobile phone itself camera imaging
Evil.The fish eye lens can match the smart machines such as mobile phone, panel computer itself cameras, shoot visual angle scope reachable
More than 180 °, and without dark angle, purple boundary.Shooting image quality center is very outstanding to edge, and optical distortion is up to 100%.
2. a kind of fish eye lens that the present invention is provided, the external diameter of first lens is less than 25mm, the visual field camera lens
Overall length is less than 28mm, really realizes that small volume image quality is good, is easy to carry.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of optical texture schematic diagram of fish eye lens embodiment that the present invention is provided；
Fig. 2 is the fish-eye curvature of field figure that the present invention is provided；
Fig. 3 is the fish-eye distortion figure that the present invention is provided；
Fig. 4 is the fish-eye lateral chromatic aberration figure that the present invention is provided；
Fig. 5 is the fish-eye MTF vs Field figures that the present invention is provided.
The lens of 1- first, the lens of 2- second, the lens of 3- the 3rd, the lens of 4- the 4th, the lens of 5- the 5th；First group of 11-, 12-
Second group, the 3rd group of 13-, the 4th group of 14-.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 shows a kind of fish eye lens embodiment of present invention offer.
As shown in figure 1, the fish eye lens uses 54 groups --- negative, negative, positive, negative, positive optical texture design.Specifically
Ground, it is saturating that the fish eye lens is sequentially configured with the first lens 1, the second lens 2, the 3rd lens the 3, the 4th along optical axis by thing side to image side
The lens 5 of mirror 4 and the 5th.First lens 1 are the falcate glass lens of negative power, bend towards image space.Second lens 2 are burnt for negative light
The double concave glass lens of degree.First lens 1 and the second lens 2 separately constitute first group 11 and second group 12 of optical texture.
First group 11 and second group of 12 lens are negative-power lenses, with correction light angle effect, so as to realize regarding mobile phone
Feel that angle is extended to more than 180 degree from degree more than 70.
3rd lens 3 are the lenticular glass lens of positive light coke, and the 4th lens 4 are the double concave glass mirror of negative power
Piece, and the 3rd lens 3 and the 4th lens 4 are glued together.3rd group 13 is the glue being made up of the 3rd lens 3 and the 4th lens 4
Lens are closed, fish-eye aberration is mainly corrected, so as to ensure that color keeps pure to shooting oversized angle picture simultaneously, solves
The color defect such as fish-eye purple boundary or red side in the prior art, it is ensured that image quality.
5th lens 5 are the lenticular glass lens of positive light coke, the 4th group 14 of composition optical texture.4th group 14 is
The lenticular glass lens of positive light coke, mainly correct light, more preferably the camera of matching mobile phone itself, reduce fish eye lens
Infringement of the light to mobile phone itself camera imaging.And the image space main face forward shift of optical system is caused, so that system is long
Degree shortens, and optical distortion can reach 100%.
In the technical program, the fish eye lens is satisfied the following conditional expression：
- 0.70 ＜ f1-2/f3-5＜ -0.50；
5.5 ＜ f1/f1-2＜ 6.5；
3.0 ＜ f3-4/f3-5＜ 4.0；
f>600；
Wherein, f1-2It is the combined focal length of first lens 1 and second lens 2, f3-5Be the 3rd lens 3,
The combined focal length of the 4th lens 4 and the 5th lens 5, f1It is the focal length of first lens 1, f3-4It is the described 3rd
The combined focal length of lens 3 and the 4th lens 4, f is the fish-eye effective focal length.
It should be noted that the fish-eye focal power distribution that the present invention is provided is not limited only to above-mentioned preference, it can
Using setup parameter common in the art, those skilled in the art can be carried out according to the alignment of fish-eye performance need
Setting and modifying.
The refractive index Nd and Abbe number Vd of the d light of the first lens 1, the second lens 2 and the 3rd lens 3 meet following relation
Formula：1.68<Nd<1.90,40<Vd<60.
The Abbe number Vd of the 5th lens 5 meets following relation：65 ＜ Vd ＜ 75.
Fish-eye first lens 1 to the outside dimension of the 5th lens 5 is reduced successively, and the external diameter of the first lens 1 is less than
25mm, total length is less than 28mm.Fish eye lens is strictly controlled by each lens sizes, fish eye lens is had body
The characteristics of product is small.
First lens 1 to the material of the 5th lens 5 is the sphere camera lens that optical glass is made, it should be apparent that, material is not
It is confined to optical glass.
Fish eye lens performance parameter of the present invention also to one of which embodiment is tested, wherein,
f1-2=-9.304mm, f3-4=52.227mm, f3-5=15.033mm, f5=13.539mm, f=653.7mm；Survey
Test result is as shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5.
As seen from Figure 2, fish eye lens is to meridian (T in the corresponding diagram 2) direction produced by light and the sagitta of arc (corresponding diagram
S in 2) direction the curvature of field between -2um between 10um.As seen from Figure 3, fish eye lens maximum distortion reaches 100%.By
Fig. 4 can be seen that fish eye lens to the horizontal line aberration difference of the light generation of visible ray the inside different wave length within 2um, and
All in 2um, the purple boundary being completely absent on color or red side lack for shortwave 0.436um and long wave 0.6563um maximum transversals aberration
Fall into.As seen from Figure 5, resolution of the fish eye lens from center to peripheral field can be all very outstanding.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (8)
1. a kind of fish eye lens, it is characterised in that：Including the first lens (1), that are sequentially configured by thing side to image side along optical axis
Two lens (2), the 3rd lens (3), the 4th lens (4) and the 5th lens (5)；First lens (1) are with negative power
Meniscus shaped lens, its concave surface is towards image side；Second lens (2) are the double concave lens with positive light coke；Described
Lenticular lens of three lens (3) with positive light coke；4th lens (4) are the double concave lens with negative power；
3rd lens (3) and the 4th lens (4) are glued together；5th lens (5) are with the lenticular of positive light coke
Lens.
2. fish eye lens according to claim 1, it is characterised in that：The fish eye lens is satisfied the following conditional expression：
- 0.70 ＜ f1-2/f3-5＜ -0.50；
5.5 ＜ f1/f1-2＜ 6.5；
3.0 ＜ f3-4/f3-5＜ 4.0；
f>600；
Wherein, f1-2It is the combined focal length of first lens (1) and second lens (2), f3-5It is the 3rd lens
(3), the combined focal length of the 4th lens (4) and the 5th lens (5), f1It is the focal length of first lens (1), f3-4
It is the combined focal length of the 3rd lens (3) and the 4th lens (4), f is the fish-eye effective focal length.
3. fish eye lens according to claim 1 and 2, it is characterised in that：First lens (1), second lens
And the refractive index Nd and Abbe number Vd of d light of the 3rd lens (3) meets following relation (2)：The ＜ of 1.68 ＜ Nd ＜ 1.90,40
Vd ＜ 60.
4. fish eye lens according to claim 3, it is characterised in that：The Abbe number Vd of the 5th lens (5) meets such as
Lower relation：65 ＜ Vd ＜ 75.
5. fish eye lens according to claim 1, it is characterised in that：First lens (1) extremely the 5th lens (5)
It is spheric glass lens.
6. fish eye lens according to claim 1, it is characterised in that：First lens (1) extremely the 5th lens (6)
External diameter reduce successively.
7. fish eye lens according to claim 6, it is characterised in that：The external diameter of first lens (1) is less than 25mm, institute
Fish-eye overall length is stated less than 28mm.
8. fish eye lens according to any one of claim 1 to 7, it is characterised in that：The fish eye lens is mobile phone
Auxiliary lens, the fish eye lens coordinates the camera of the mobile phone to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233199.6A CN106932885A (en) | 2017-04-11 | 2017-04-11 | A kind of fish eye lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233199.6A CN106932885A (en) | 2017-04-11 | 2017-04-11 | A kind of fish eye lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106932885A true CN106932885A (en) | 2017-07-07 |
Family
ID=59425730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710233199.6A Pending CN106932885A (en) | 2017-04-11 | 2017-04-11 | A kind of fish eye lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106932885A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208630A (en) * | 2020-04-23 | 2020-05-29 | 江西联创电子有限公司 | External lens |
| CN111352224A (en) * | 2019-11-22 | 2020-06-30 | 莆田学院 | Catadioptric panoramic imaging system and imaging method thereof |
| CN111443462A (en) * | 2020-05-18 | 2020-07-24 | 苏州东方克洛托光电技术有限公司 | Projector additional lens |
| CN111880290A (en) * | 2020-08-20 | 2020-11-03 | 湖北华鑫光电有限公司 | An ultra-wide angle cat-eye lens |
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| JP2010128100A (en) * | 2008-11-26 | 2010-06-10 | Kyocera Corp | Wide-angle lens and imaging module |
| CN102650726A (en) * | 2011-02-28 | 2012-08-29 | 株式会社光学逻辑 | Camera |
| CN104459946A (en) * | 2013-09-16 | 2015-03-25 | 今国光学工业股份有限公司 | five-piece wide-angle lens |
| CN105301745A (en) * | 2015-12-03 | 2016-02-03 | 中山联合光电科技股份有限公司 | A super wide-angle optical system |
| CN205485017U (en) * | 2016-01-26 | 2016-08-17 | 深圳市谛源光科有限公司 | Large aperture high definition wide - angle optical lens |
| CN206975305U (en) * | 2017-04-11 | 2018-02-06 | 广东思锐光学股份有限公司 | a fisheye lens |
-
2017
- 2017-04-11 CN CN201710233199.6A patent/CN106932885A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010128100A (en) * | 2008-11-26 | 2010-06-10 | Kyocera Corp | Wide-angle lens and imaging module |
| CN102650726A (en) * | 2011-02-28 | 2012-08-29 | 株式会社光学逻辑 | Camera |
| CN104459946A (en) * | 2013-09-16 | 2015-03-25 | 今国光学工业股份有限公司 | five-piece wide-angle lens |
| CN105301745A (en) * | 2015-12-03 | 2016-02-03 | 中山联合光电科技股份有限公司 | A super wide-angle optical system |
| CN205485017U (en) * | 2016-01-26 | 2016-08-17 | 深圳市谛源光科有限公司 | Large aperture high definition wide - angle optical lens |
| CN206975305U (en) * | 2017-04-11 | 2018-02-06 | 广东思锐光学股份有限公司 | a fisheye lens |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111352224A (en) * | 2019-11-22 | 2020-06-30 | 莆田学院 | Catadioptric panoramic imaging system and imaging method thereof |
| CN111208630A (en) * | 2020-04-23 | 2020-05-29 | 江西联创电子有限公司 | External lens |
| CN111443462A (en) * | 2020-05-18 | 2020-07-24 | 苏州东方克洛托光电技术有限公司 | Projector additional lens |
| CN111443462B (en) * | 2020-05-18 | 2021-09-21 | 苏州东方克洛托光电技术有限公司 | Projector additional lens |
| CN111880290A (en) * | 2020-08-20 | 2020-11-03 | 湖北华鑫光电有限公司 | An ultra-wide angle cat-eye lens |
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Application publication date: 20170707 |
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