CN111965793B - Super-large aperture full-width lens of M-aperture digital micro single camera with effective focal length F equal to 50mm and relative aperture F equal to 0.95 - Google Patents
Super-large aperture full-width lens of M-aperture digital micro single camera with effective focal length F equal to 50mm and relative aperture F equal to 0.95 Download PDFInfo
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- CN111965793B CN111965793B CN202010933197.XA CN202010933197A CN111965793B CN 111965793 B CN111965793 B CN 111965793B CN 202010933197 A CN202010933197 A CN 202010933197A CN 111965793 B CN111965793 B CN 111965793B
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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
- G02B13/005—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having spherical lenses only
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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
- 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
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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Abstract
The invention relates to a digital micro single camera lens, in particular to an M-aperture digital micro single camera super-large aperture full-range lens with an effective focal length F equal to 50mm and a relative aperture F equal to 0.95, which consists of a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5), a sixth lens (6), a seventh lens (7), an eighth lens (8), a ninth lens (9), a tenth lens (10) and an eleventh lens (11) in sequence from the object side, wherein the lenses are all designed in a spherical surface mode to correct various aberrations, spherical aberrations generated by adopting a spherical lens can be avoided, the structure is simplified, and the imaging quality is improved. The lenses are all made of glass materials produced by Chengdu Guangming photoelectricity Limited company, so that the quality of the lenses and the definition of the lens are improved, the use performance of the lens is improved, and the cost performance of the lens is greatly improved.
Description
Technical Field
The invention relates to a digital micro single camera lens, in particular to an M-aperture digital micro single camera super-large aperture full-width lens with an effective focal length F equal to 50mm and a relative aperture F equal to 0.95.
Background
In digital camera equipment, the production design of a domestic lens has defects. However, domestic imaging enthusiasts are numerous and the demand is large. In the existing lens design, a 50mmF0.95M mouth lens produced by a Leica original factory is expensive, and causes heavy economic burden for a large number of photography enthusiasts. Therefore, there is a need for a lens with high imaging quality, high cost performance and simple structure to meet the requirement of photography.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an M-aperture digital micro single camera super large aperture full-size lens with a large aperture and an effective focal length F of 50mm and a relative aperture F of 0.95, which is configured to correct various aberrations, simplify the structure, improve the imaging quality, and achieve high imaging quality, high cost performance, and a full-size lens, and is specifically configured to sequentially include, from the object side, a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, a ninth lens 9, a tenth lens 10, and an eleventh lens 11;
the first lens 1 is a convex object-side spherical positive lens, which is composed of a convex first spherical surface and a convex second spherical surface,
the second lens 2 is a convex object-side spherical positive lens and consists of a convex third spherical surface and a concave fourth spherical surface,
the third lens 3 is a convex object-side spherical negative lens and consists of a convex fifth spherical surface and a concave sixth spherical surface,
the fourth lens 4 is a concave object-side spherical negative lens, which is composed of a concave seventh spherical surface and a concave eighth spherical surface, the eighth spherical surface is cemented with the ninth spherical surface,
the fifth lens 5 is a convex object-side spherical positive lens, and consists of a convex ninth spherical surface and a convex tenth spherical surface,
the sixth lens 6 is a convex object-side spherical positive lens, which is composed of a convex eleventh spherical surface and a convex twelfth spherical surface,
the seventh lens 7 is a convex object-side spherical positive lens, which is composed of a convex thirteenth spherical surface and a convex fourteenth spherical surface,
the eighth lens 8 is a convex object-side spherical positive lens, which is composed of a convex fifteenth spherical surface and a concave sixteenth spherical surface, the sixteenth spherical surface is cemented with the seventeenth spherical surface,
the ninth lens 9 is a convex object-side spherical negative lens, and is composed of a convex seventeenth spherical surface and a concave eighteenth spherical surface,
the tenth lens 10 is a convex object-side spherical positive lens, and is composed of a convex nineteenth spherical surface and a convex twenty-first spherical surface, the twenty-first spherical surface and the twenty-first spherical surface are cemented,
the eleventh lens 11 is a concave object-side spherical negative lens and is composed of a concave twenty-first spherical surface and a concave twenty-second spherical surface;
the first lens 1 to the eleventh lens 11 are all glass materials produced by shinyleigh photoelectric limited.
Further, the refractive index of the first lens 1 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the second lens 2 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the third lens 3 is more than 1.7 and less than 1.8, and the dispersion thereof is more than 25 and less than 30;
the refractive index of the fourth lens 4 is more than 1.7 and less than 1.8, and the dispersion thereof is more than 25 and less than 30;
the refractive index of the fifth lens 5 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the sixth lens 6 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the seventh lens 7 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the eighth lens 8 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the ninth lens 9 is more than 1.4 and less than 1.5, and the dispersion thereof is more than 80 and less than 85;
the refractive index of the tenth lens 10 is greater than 1.7 and less than 1.8, and the dispersion thereof is greater than 45 and less than 50;
the eleventh lens 11 has a refractive index greater than 1.8 and less than 1.9, and a dispersion greater than 20 and less than 25.
Further, the air conditioner is provided with a fan,
the material of the first lens 1 is a glass material with the model number of HZLAF55D, the refractive index is 1.835, and the dispersion is 42.73;
the material of the second lens 2 is a glass material with model number of HZLAF68B, the refractive index 1.883 and the dispersion thereof are 40.79;
the material of the third lens 3 is a glass material with the model of HZF6, the refractive index is 1.755, and the dispersion is 27.53;
the fourth lens 4 is made of glass material with model number of HZF5, refractive index of 1.740 and dispersion of 28.30;
the material of the fifth lens 5 is a glass material with model number of HZLAF55D, the refractive index 1.835 and the dispersion 42.73;
the material of the sixth lens 6 is a glass material with model number of HZLAF55D, the refractive index 1.835 and the dispersion 42.73;
the material of the seventh lens 7 is a glass material with model number of HZLAF55D, refractive index 1.835 and dispersion of 42.73;
the eighth lens 8 is made of glass material with model number of HZLAF55D, refractive index 1.835 and dispersion of 42.73;
the ninth lens 9 is made of glass material with model number HFK61, refractive index of 1.497, and dispersion of 81.61;
the tenth lens 10 is made of a glass material of type HLAF2, has a refractive index of 1.717 and a dispersion of 47.89;
the eleventh lens 11 is made of glass material model HZF52TT, has a refractive index of 1.847 and a dispersion of 23.78.
Further, the lens parameters are:
the invention has the advantages that: the lens adopts spherical design to correct various aberrations, and spherical aberration generated by adopting a spherical mirror can be avoided, so that the structure is simplified, and the imaging quality is improved. The lenses are all made of glass materials produced by Chengdu Guangming photoelectricity Limited company, so that the quality of the lenses is improved, the definition of the lenses is improved, the use performance of the lenses is improved, and the cost performance of the lenses is greatly improved.
Drawings
FIG. 1 is a schematic view of a lens structure of a full-width lens of a digital camera according to the present invention.
FIG. 2 is a MTF graph of the full-width lens of the digital camera of the present invention.
Wherein: reference numeral 1 denotes a first lens element, 2 denotes a second lens element, 3 denotes a third lens element, 4 denotes a fourth lens element, 5 denotes a fifth lens element, 6 denotes a sixth lens element, 7 denotes a seventh lens element, 8 denotes an eighth lens element, 9 denotes a ninth lens element, 10 denotes a tenth lens element, 11 denotes an eleventh lens element, 12 denotes an image plane, 13 denotes a diaphragm, and 14 denotes CMOS cover glass.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 2, the present invention is a digital micro single camera super large aperture full-width lens, which is composed of a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, a ninth lens 9, a tenth lens 10, and an eleventh lens 11 in sequence from the object side. The first lens 1 is a convex object-side spherical positive lens consisting of a first spherical surface (convex surface) and a second spherical surface (convex surface), the second lens 2 is a convex object-side spherical positive lens consisting of a third spherical surface (convex surface) and a fourth spherical surface (concave surface), the third lens 3 is a convex object-side spherical negative lens consisting of a fifth spherical surface (convex surface) and a sixth spherical surface (concave surface), the fourth lens 4 is a concave object-side spherical negative lens consisting of a seventh spherical surface (concave surface) and an eighth spherical surface ((concave surface), the eighth spherical surface is cemented with the ninth spherical surface, the fifth lens 5 is a convex object-side spherical positive lens consisting of a ninth spherical surface (convex surface) and a tenth spherical surface (convex surface), the sixth lens 6 is a convex object-side positive lens consisting of an eleventh spherical surface (convex surface) and a twelfth spherical surface (convex surface), the seventh lens 7 is a convex object-side spherical positive lens consisting of a thirteenth spherical surface (convex surface) and a fourteenth spherical surface, the eighth lens 8 is a convex object-side spherical positive lens, and is composed of a fifteenth spherical surface (convex surface) and a sixteenth spherical surface (concave surface), the sixteenth spherical surface is cemented with a seventeenth spherical surface, the ninth lens 9 is a convex object-side spherical negative lens, and is composed of a seventeenth spherical surface (convex surface) and an eighteenth spherical surface (concave surface), the tenth lens 10 is a convex object-side spherical positive lens, and is composed of a nineteenth spherical surface (convex surface) and a twenty-first spherical surface (convex surface), the twenty-first spherical surface is cemented with a twenty-first spherical surface, and the eleventh lens 11 is a concave object-side spherical negative lens, and is composed of a twenty-first spherical surface (concave surface) and a twenty-second spherical surface (concave surface).
The first lens 1 to the tenth lens 11 are all glass materials produced by shinyleigh photoelectric limited. The refractive index of the first lens 1 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45; preferably, the first lens 1 is made of glass material of type HZLAF55D, has a refractive index of 1.835 and a dispersion of 42.73. The refractive index of the second lens 2 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45; the preferred material for the second lens 2 is a glass material of type HZLAF68B, index of refraction 1.883, and dispersion of 40.79. The refractive index of the third lens 3 is more than 1.7 and less than 1.8, and the dispersion thereof is more than 25 and less than 30; the preferred material for the third lens 3 is a glass material of type HZF6, having a refractive index of 1.755 and a dispersion of 27.53. The refractive index of the fourth lens 4 is more than 1.7 and less than 1.8, and the dispersion thereof is more than 25 and less than 30; the preferred material for the fourth lens 4 is a glass material of type HZF5, refractive index 1.740, and dispersion 28.30. The refractive index of the fifth lens 5 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45; preferably, the fifth lens 5 is made of glass material of type HZLAF55D, refractive index 1.835, and dispersion 42.73. The refractive index of the sixth lens 6 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45; preferably, the sixth lens 6 is made of glass material of type HZLAF55D, refractive index 1.835, and dispersion 42.73. The refractive index of the seventh lens 7 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45; the preferred material for the seventh lens 7 is a glass material of type HZLAF55D, refractive index 1.835, and dispersion 42.73. The refractive index of the eighth lens 8 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45; preferably, the eighth lens 8 is made of a glass material of type HZLAF55D, refractive index 1.835, and dispersion 42.73. The refractive index of the ninth lens 9 is more than 1.4 and less than 1.5, and the dispersion thereof is more than 80 and less than 85; preferably, the ninth lens 9 is made of a glass material of type HFK61, having a refractive index of 1.497 and a chromatic dispersion of 81.61. The refractive index of the tenth lens 10 is greater than 1.7 and less than 1.8, and the dispersion thereof is greater than 45 and less than 50; preferably, the tenth lens 10 is made of a glass material of type HLAF2, has a refractive index of 1.717 and a dispersion of 47.89. The refractive index of the eleventh lens 11 is more than 1.8 and less than 1.9, and the dispersion thereof is more than 20 and less than 25; it is preferable that the eleventh lens 11 is made of a glass material of type HZF52TT, has a refractive index of 1.847, and has a dispersion of 23.78.
The lens parameters are:
the effective focal length F is 50mm, and the relative aperture F is 0.95, please refer to fig. 1. Referring to fig. 2, half of the diagonal of the CMOS active area is defined as the maximum image height, and in this embodiment, half of the diagonal of the CMOS active area is 21.5mm, and for measuring the spatial frequency of different image heights, 21.50mm image height, 17.28mm image height, 13.00mm image height, 8.60mm image height, 4.20mm image height, and 0.00mm central field image height (CMOS center point) are taken. In fig. 2: F1D represents the diffraction limit curve, F1R represents the MTF curve for 0.00mm central field image height; F2T represents the MTF curve for a 4.20mm image height in the meridional direction, F2R represents the MTF curve for an 4.20mm image height in the sagittal direction; F3T represents the MTF curve for a meridional 8.60mm image height, F3R represents the MTF curve for an arc loss 8.60mm image height; F4T shows the MTF curve for a meridional 13.00mm image height, F4R shows the MTF curve for an arc loss 13.00mm image height; F5T shows the MTF curve for a meridional 17.28mm image height, F5R shows the MTF curve for an arc loss 17.28mm image height; F6T shows the MTF curve for a meridional 21.50mm image height, and F6R shows the MTF curve for an arc loss 21.50mm image height.
The full-frame lens of the digital camera has the advantages that: the lens adopts spherical design to correct various aberrations, and spherical aberration generated by adopting a spherical mirror can be avoided, so that the structure is simplified, and the imaging quality is improved. The lenses are all made of glass materials, so that the quality of the lenses and the definition of the lens are improved, and the service performance of the lens is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. An effective focal length is 50mm, relative aperture F is 0.95's digital little single camera super large aperture full-width lens, its characterized in that: which consists of a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5), a sixth lens (6), a seventh lens (7), an eighth lens (8), a ninth lens (9), a tenth lens (10) and an eleventh lens (11) in sequence from the object space,
the first lens (1) is a convex object-side spherical positive lens and consists of a convex first spherical surface and a convex second spherical surface,
the second lens (2) is a convex object-side spherical positive lens and consists of a convex third spherical surface and a concave fourth spherical surface,
the third lens (3) is a convex object-side spherical negative lens and consists of a convex fifth spherical surface and a concave sixth spherical surface,
the fourth lens (4) is a concave object-side spherical negative lens and consists of a concave seventh spherical surface and a concave eighth spherical surface, the eighth spherical surface is cemented with the ninth spherical surface,
the fifth lens (5) is a convex object-side spherical positive lens and consists of a convex ninth spherical surface and a convex tenth spherical surface,
the sixth lens (6) is a convex object-side spherical positive lens and consists of a convex eleventh spherical surface and a convex twelfth spherical surface,
the seventh lens (7) is a convex object-side spherical positive lens and consists of a convex thirteenth spherical surface and a convex fourteenth spherical surface,
the eighth lens (8) is a convex object-side spherical positive lens, which consists of a convex fifteenth spherical surface and a concave sixteenth spherical surface, the sixteenth spherical surface is glued with the seventeenth spherical surface,
the ninth lens (9) is a convex object-side spherical negative lens and consists of a convex seventeenth spherical surface and a concave eighteenth spherical surface,
the tenth lens (10) is a convex object-side spherical positive lens and consists of a convex nineteenth spherical surface and a convex twenty-first spherical surface, the twenty-first spherical surface is cemented with the twenty-first spherical surface,
the eleventh lens (11) is a concave object-side spherical negative lens and is composed of a concave twenty-first spherical surface and a concave twenty-second spherical surface.
2. The M-aperture digital micro single camera super-large-aperture full-frame lens with an effective focal length F-50 mm and a relative aperture F-0.95 as claimed in claim 1, wherein: the refractive index of the first lens (1) is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the second lens (2) is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the third lens (3) is more than 1.7 and less than 1.8, and the dispersion thereof is more than 25 and less than 30;
the refractive index of the fourth lens (4) is more than 1.7 and less than 1.8, and the dispersion thereof is more than 25 and less than 30;
the refractive index of the fifth lens (5) is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the sixth lens (6) is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the seventh lens (7) is more than 1.8 and less than 1.9, and the dispersion of the seventh lens is more than 40 and less than 45;
the refractive index of the eighth lens (8) is more than 1.8 and less than 1.9, and the dispersion thereof is more than 40 and less than 45;
the refractive index of the ninth lens (9) is more than 1.4 and less than 1.5, and the dispersion thereof is more than 80 and less than 85;
the refractive index of the tenth lens (10) is more than 1.7 and less than 1.8, and the dispersion of the tenth lens is more than 45 and less than 50;
the refractive index of the eleventh lens (11) is larger than 1.8 and smaller than 1.9, and the dispersion thereof is larger than 20 and smaller than 25.
3. The M-aperture digital micro single camera super-large-aperture full-frame lens with an effective focal length F-50 mm and a relative aperture F-0.95 as claimed in claim 1, wherein:
the material of the first lens (1) is a glass material with the model number of HZLAF55D, the refractive index is 1.835, and the dispersion is 42.73;
the material of the second lens (2) is a glass material with the model number of HZLAF68B, the refractive index is 1.883, and the dispersion is 40.79;
the material of the third lens (3) is a glass material with the model of HZF6, the refractive index is 1.755, and the dispersion is 27.53;
the fourth lens (4) is made of glass material with the model of HZF5, the refractive index is 1.740, and the dispersion is 28.30;
the material of the fifth lens (5) is glass material with model number HZLAF55D, the refractive index 1.835 and the dispersion are 42.73;
the material of the sixth lens (6) is a glass material with the model number of HZLAF55D, the refractive index is 1.835, and the dispersion is 42.73;
the material of the seventh lens (7) is a glass material with the model number of HZLAF55D, the refractive index is 1.835, and the dispersion is 42.73;
the eighth lens (8) is made of glass material with the model number of HZLAF55D, the refractive index of 1.835 and the dispersion of 42.73;
the ninth lens (9) is made of glass material with the model number of HFK61, the refractive index is 1.497, and the dispersion is 81.61;
the tenth lens (10) is made of a glass material with the type HLAF2, the refractive index is 1.717, and the dispersion is 47.89;
the eleventh lens (11) is made of glass material with model number HZF52TT, refractive index 1.847 and dispersion of 23.78.
4. The M-aperture digital micro single camera super-large-aperture full-frame lens with an effective focal length F-50 mm and a relative aperture F-0.95 as claimed in claim 1, wherein: the lens parameters are as follows,
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| CN202010933197.XA CN111965793B (en) | 2020-09-08 | 2020-09-08 | Super-large aperture full-width lens of M-aperture digital micro single camera with effective focal length F equal to 50mm and relative aperture F equal to 0.95 |
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| CN202010933197.XA CN111965793B (en) | 2020-09-08 | 2020-09-08 | Super-large aperture full-width lens of M-aperture digital micro single camera with effective focal length F equal to 50mm and relative aperture F equal to 0.95 |
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| CN111965793B true CN111965793B (en) | 2022-05-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770477A (en) * | 1986-12-04 | 1988-09-13 | The Perkin-Elmer Corporation | Lens usable in the ultraviolet |
| CN102621668A (en) * | 2012-04-21 | 2012-08-01 | 张家港鹏博光电科技有限公司 | Projection optical system |
| CN103064172A (en) * | 2011-10-20 | 2013-04-24 | 索尼公司 | Imaging lens and imaging device |
| CN109298512A (en) * | 2018-12-04 | 2019-02-01 | 湖州清维电子科技有限公司 | A kind of short focus engineering projection lens |
-
2020
- 2020-09-08 CN CN202010933197.XA patent/CN111965793B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770477A (en) * | 1986-12-04 | 1988-09-13 | The Perkin-Elmer Corporation | Lens usable in the ultraviolet |
| CN103064172A (en) * | 2011-10-20 | 2013-04-24 | 索尼公司 | Imaging lens and imaging device |
| CN102621668A (en) * | 2012-04-21 | 2012-08-01 | 张家港鹏博光电科技有限公司 | Projection optical system |
| CN109298512A (en) * | 2018-12-04 | 2019-02-01 | 湖州清维电子科技有限公司 | A kind of short focus engineering projection lens |
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