CN204028453U - A kind of micro-lens - Google Patents
A kind of micro-lens Download PDFInfo
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- CN204028453U CN204028453U CN201420459285.0U CN201420459285U CN204028453U CN 204028453 U CN204028453 U CN 204028453U CN 201420459285 U CN201420459285 U CN 201420459285U CN 204028453 U CN204028453 U CN 204028453U
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Abstract
A kind of micro-lens, comprise the 1st lens combination G1 of positive diopter successively to image planes side from object side, negative dioptric 2nd lens combination G2, diaphragm stop, the 3rd lens combination G3 of positive diopter, negative dioptric 4th lens combination G4 composition, object is from infinite distance to when closely moving, the 2nd above-mentioned lens combination G2 and the 4th lens combination G4 moves to realize focus, and aforesaid 1st lens G1, the 4th lens G4 and diaphragm sotp maintains static.Aforesaid 1st arrangement of mirrors head group G1 is by being followed successively by positive diopter convex lens and positive negative cemented doublet 3 pieces of eyeglasses form from object side, aforementioned 4th lens combination G4 is made up of one piece of negative lens eyeglass.And following conditional; 0.5≤f11/FL≤1.0; It has from infinite as far as the imaging all very well of equimultiple photography multiplying power, and it is little to have volume, and cost is low, the feature that performance is high.
Description
Technical field
The utility model be a kind of from infinite all can the micro-lens of good imaging as far as equimultiple photography multiplying power, can digital camera lens be widely used for, camera lens, particularly relate to the fields such as slr camera camera lens.
Background technology
At present, it is of a great variety from the infinite micro-lens as far as equimultiple photography multiplying power that single-lens reflex camera uses, such as No. 2006-153942, known Japanese Unexamined Patent Publication and Japanese Unexamined Patent Publication 2012-53260 patent, from object side, the diopter of each lens combination is just followed successively by, negative, just, negative structure, object is photographed the focus process of multiplying power from infinite as far as equimultiple, moved by the 2nd group and the 4th group of lens set and carry out focus, fix for the 1st group and the 4th group.Although can obtain good imaging effect, eyeglass piece number is more, cannot realize low cost miniaturization, is used for 35mm full width picture if this utility model amplified, and volume will be larger, and cost can be higher.
Further, than Japanese Unexamined Patent Publication 2012-63403 patent as is well known, from object side, the diopter of each lens combination is just followed successively by, negative, just, negative, negative, positive structure, object from infinite as far as photography multiplying power be the process of equimultiple, 2nd group and the 4th group of lens set move carries out focus, 1st group and the 4th, fix for 5,6 groups.Although can obtain good imaging effect, eyeglass piece number is more, cannot realize low cost miniaturization.
Utility model content
Bulky in order to overcome above-mentioned known micro-lens, the shortcoming that cost is high, the utility model will provide a kind of all can realize high performance imaging effect from infinite as far as equimultiple photography multiplying power, and volume is little, the high-performance micro-lens that cost is low.
The utility model solves the technical scheme that its technical matters adopts: a kind of micro-lens, comprise the 1st lens combination G1 of positive diopter successively to image planes side from object side, negative dioptric 2nd lens combination G2, diaphragm stop, 3rd lens combination G3 of positive diopter, negative dioptric 4th lens combination G4 composition, object is from infinite distance to when closely moving, the 2nd above-mentioned lens combination G2 and the 4th lens combination G4 moves to realize focus, aforesaid 1st lens G1, the 4th lens G4 and diaphragm sotp maintains static.Aforesaid 1st arrangement of mirrors head group G1 is by being followed successively by positive diopter convex lens and positive negative cemented doublet 3 pieces of eyeglasses form from object side, aforementioned 4th lens combination G4 is made up of one piece of negative lens eyeglass.And following conditional.
0.5≤f11/FL≤1.0 (1)
Wherein,
Near the focal length of the positive lens of object side in f11: the first lens combination G1
FL: under the state of infinite distance, the focal length of full optical system
As the technical scheme optimized, described micro-lens satisfies condition formula (2);
1.0≤f11/F1≤1.5 (2)
Wherein, F1: the focal length of the first lens combination described above.
As the technical scheme optimized, described micro-lens also satisfies condition formula (3);
1.0≤f11/Ymax≤6.0 (3)
Wherein, Ymax: under the state of infinite distance, the maximum paraxial image height (Ymax=FL × tan ω) of optical system.
If exceed the upper limit of conditional (1), the diopter of the 1st eyeglass in the 1st lens combination is too weak, although aberration is easy to correction, but the dioptric of the 1st lens set is spent weak causing and cannot be realized miniaturization, if realize miniaturization, the 1st lens set just cannot realize with 3 pieces of eyeglasses.If exceed the lower limit of conditional (1), although be easy to realize miniaturization, low cost, because the diopter of the 1st lens is too strong, the optical aberration correcting of generation gets up just very difficult, cannot realize high-performance.
If exceed the upper limit of conditional (2), diopter proportion in the first lens combination of the 1st eyeglass is too low, the diopter of the cemented doublet in the 1st lens combination will be excessively strong, that is, the diopter of negative lens is too weak, and the aberration of such 1st lens combination is also difficult to by correction, if exceed the lower limit of conditional (2), the diopter of the 1st lens will be too strong, and such aberration also cannot by good correction.
If exceed the upper limit of conditional (3), the diopter of the 1st eyeglass in the 1st lens combination is too weak, although aberration is easy to correction, but the dioptric of the 1st lens set is spent weak causing and cannot be realized miniaturization, if realize miniaturization, the 1st lens set just cannot realize with 3 pieces of eyeglasses.If exceed the lower limit of conditional (3), although be easy to realize miniaturization, low cost, because the diopter of the 1st lens is too strong, the optical aberration correcting of generation gets up just very difficult.
Utility model effect
The beneficial effects of the utility model are, provide one from infinite as far as the imaging all very well of equimultiple photography multiplying power, and realize small size, low cost, high performance micro-lens.
Accompanying drawing explanation
Fig. 1 is micro-lens structural representation in the first embodiment;
Fig. 2 is the infinite distance in the first embodiment, waits the spherical aberration of photography multiplying power, curvature of field aberration, distortion aberration and ratio chromatism, schematic diagram;
Fig. 3 is the structural representation of micro-lens in the second embodiment;
Fig. 4 is the infinite distance in the second embodiment, waits the spherical aberration of photography multiplying power, curvature of field aberration, distortion aberration and ratio chromatism, schematic diagram.
Embodiment
First embodiment
As shown in Figure 1, comprise the 1st lens combination G1 of positive diopter successively to image planes side from object side, negative dioptric 2nd lens combination G2, diaphragm stop, the 3rd lens combination G3 of positive diopter, negative dioptric 4th lens combination composition, object is from infinite distance to when closely moving, the 2nd above-mentioned lens combination and the 4th lens combination move to realize focus, and aforesaid 1st lens G1, the 4th lens G4 and diaphragm sotp maintains static.
The infinite distance of the first embodiment, waits the spherical aberration of photography multiplying power, curvature of field aberration, and distortion aberration and ratio chromatism, are as shown in Figure 2.
The data of the first embodiment are as follows.
R (mm): the radius-of-curvature in each face
D (mm): each eyeglass interval and lens thickness
The refractive index of each glass of Nd:d line
Vd: the Abbe number of glass
Focal length: 98.5
FNO：2.87
Half draws angle ω: 12.26
Second embodiment
As shown in Figure 3, comprise the 1st lens combination G1 of positive diopter successively to image planes side from object side, negative dioptric 2nd lens combination G2, diaphragm stop, the 3rd lens combination G3 of positive diopter, negative dioptric 4th lens combination composition, object is from infinite distance to when closely moving, the 2nd above-mentioned lens combination and the 4th lens combination move to realize focus, and aforesaid 1st lens G1, the 4th lens G4 and diaphragm sotp maintains static.
The infinite distance of the second embodiment, the spherical aberration of 1 times of photography multiplying power and 2 times of photography multiplying powers, curvature of field aberration, distortion aberration and ratio chromatism, are as shown in Figure 4.
The data of the second embodiment are as follows.
R (mm): the radius-of-curvature in each face
D (mm): each eyeglass interval and lens thickness
The refractive index of each glass of Nd:d line
Vd: the Abbe number of glass
Focal length: 84.04
FNO：2.87
Half draws angle ω: 14.26
(conditional conclusive table)
Claims (3)
1. a micro-lens, it is characterized in that: the 1st lens combination G1 comprising positive diopter from object side to image planes side successively, negative dioptric 2nd lens combination G2, diaphragm stop, the 3rd lens combination G3 of positive diopter, negative dioptric 4th lens combination G4 composition, object is from infinite distance to when closely moving, the 2nd above-mentioned lens combination G2 and the 4th lens combination G4 moves to realize focus, and aforesaid 1st lens G1, the 4th lens G4 and diaphragm sotp maintains static.Aforesaid 1st arrangement of mirrors head group G1 is by being followed successively by positive diopter convex lens and positive negative cemented doublet 3 pieces of eyeglasses form from object side, aforementioned 4th lens combination G4 is made up of one piece of negative lens eyeglass.And following conditional.
0.5≤f11/FL≤1.0 (1)
Wherein,
The focal length of the positive diopter eyeglass of the f11: the first lens combination G1 most object side
FL: under the state of infinite distance, the focal length of full optical system
2. micro-lens according to claim 1, is characterized in that, the formula that satisfies condition (2);
1.0≤f11/F1≤1.5 (2)
Wherein,
F1: the focal length of the first lens combination described above.
3. micro-lens according to claim 1 and 2, is characterized in that, the formula that satisfies condition (3);
1.0≤f11/Ymax≤6.0 (3)
Wherein,
Ymax: under the state of infinite distance, the maximum paraxial image height (Ymax=FL × tan ω) of optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459285.0U CN204028453U (en) | 2014-08-11 | 2014-08-11 | A kind of micro-lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459285.0U CN204028453U (en) | 2014-08-11 | 2014-08-11 | A kind of micro-lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028453U true CN204028453U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420459285.0U Withdrawn - After Issue CN204028453U (en) | 2014-08-11 | 2014-08-11 | A kind of micro-lens |
Country Status (1)
| Country | Link |
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| CN (1) | CN204028453U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765134A (en) * | 2014-08-11 | 2015-07-08 | 安徽长庚光学科技有限公司 | Micro lens |
| WO2021073303A1 (en) * | 2019-10-16 | 2021-04-22 | Oppo广东移动通信有限公司 | Optical lens, camera module, and electronic device |
-
2014
- 2014-08-11 CN CN201420459285.0U patent/CN204028453U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765134A (en) * | 2014-08-11 | 2015-07-08 | 安徽长庚光学科技有限公司 | Micro lens |
| CN104765134B (en) * | 2014-08-11 | 2017-09-22 | 安徽长庚光学科技有限公司 | A kind of micro-lens |
| WO2021073303A1 (en) * | 2019-10-16 | 2021-04-22 | Oppo广东移动通信有限公司 | Optical lens, camera module, and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141217 Effective date of abandoning: 20170922 |