CN109061839B - Super star light level high definition optical lens - Google Patents
Super star light level high definition optical lens Download PDFInfo
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- CN109061839B CN109061839B CN201811154658.2A CN201811154658A CN109061839B CN 109061839 B CN109061839 B CN 109061839B CN 201811154658 A CN201811154658 A CN 201811154658A CN 109061839 B CN109061839 B CN 109061839B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 35
- 239000011521 glass Substances 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000004075 alteration Effects 0.000 description 24
- 239000000463 material Substances 0.000 description 19
- 239000006185 dispersion Substances 0.000 description 13
- 239000000758 substrate Substances 0.000 description 7
- 230000005499 meniscus Effects 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 206010010071 Coma Diseases 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a superstar light level high-definition optical lens which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens and a photosensitive chip which are sequentially arranged from an object plane to an image plane along an optical axis, wherein a diaphragm is arranged between the sixth lens and the seventh lens, the lenses are all glass spherical lenses, and focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens and the eleventh lens are sequentially negative, positive, negative, positive and positive. The lens is all glass lenses, and has low cost and high resolution.
Description
Technical Field
The invention belongs to the technical field of optical lenses, and particularly relates to a superstar light-level high-definition optical lens.
Background
Compared with the traditional camera, the ultra-starlight lens matched with the corresponding camera can achieve excellent color image visual effect under extremely low illumination, the image, the resolution and the color rendition can be greatly improved, the use requirement of full-color imaging under a low illumination scene can be met, the night monitoring effect is comprehensively improved, a colored, clear and transparent monitoring picture is provided, and the capturing capability of detail information is effectively improved. Along with the development of technology and the wide use of full-color high-definition monitoring, higher requirements are put forward on the ultra-star lens.
Chinese patent (publication No. CN 108388004A) discloses a starlight-level high-definition day-night confocal optical lens, which belongs to the technical field of optical lenses and comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and a photosensitive chip which are sequentially arranged from an object plane to an image plane along an optical axis, wherein a diaphragm is arranged between the second lens and the third lens, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are glass spherical lenses, the seventh lens is a plastic aspherical lens, and the first lens, the second lens, the third lens, the fourth lens, the fifth lens,
The focal lengths of the sixth lens and the seventh lens are negative, positive, negative, and positive in order. The patent lens has the F number of 1.6, insufficient luminous flux, low resolution and can not meet the requirement of displaying bright and clear pictures under the condition of no light at night.
Chinese patent (publication No. CN102967924 a) discloses an optical lens, which includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens sequentially arranged on a common optical axis line from an object space to an image space, wherein a diaphragm is arranged between the third lens and the fourth lens, and the fifth lens, the sixth lens and the seventh lens are three cemented lenses for reducing chromatic aberration problems caused by confocal of visible light and infrared light. The patent is a lens with small angle of view and large target surface, the angle of view is 38 degrees, and the angle of view is small.
Disclosure of Invention
In view of the above, the present invention aims to overcome the shortcomings of the prior art, and provides a superstar optical lens with high resolution, which is low in cost and high in resolution, and all uses glass lenses.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens and the eleventh lens are sequentially arranged from an object plane to an image plane along an optical axis, a diaphragm is arranged between the sixth lens and the seventh lens, the lenses are glass spherical lenses, and focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens and the eleventh lens are sequentially negative, positive, negative, positive and positive; the number of lens sheets with focal power in the superstar high-definition optical lens is 11.
Further, the lens is a large aperture lens, and fno=0.95.
Further, the optical lens further comprises a photosensitive chip, wherein the photosensitive chip is arranged behind the eleventh lens, and an optical filter and a protective glass are sequentially arranged between the photosensitive chip and the eleventh lens.
Further, the size of the photosensitive chip is 1/1.8", and the resolution is 800 ten thousand pixels.
The beneficial effects of the invention are as follows:
1. the lens has a field angle of 70 degrees, a resolution of 8MP and high resolution.
2. In the design process, the materials of the third lens, the fourth lens, the sixth lens and the eighth lens are limited to be materials with high refractive indexes, so that the large aperture effect is achieved.
3. By using the lens, the chromatic aberration and the secondary spectrum are excellently corrected, so that the aberration of the lens is reduced, and the problems of high-low temperature performance and aberration of the lens are solved.
Drawings
Fig. 1 is a schematic structural diagram of an optical lens according to embodiment 1 of the present invention;
FIG. 2 is a graph showing the spherical aberration of the optical lens according to example 1 of the present invention;
FIG. 3 is a graph showing curvature of field and distortion of an optical lens in example 1 of the present invention;
FIG. 4 is a graph showing the chromatic aberration of the optical lens in embodiment 1 of the present invention;
fig. 5 is an MTF graph of the optical lens in example 1 of the present invention.
In the figure: 1-first lens, 2-second lens, 3-third lens, 4-fourth lens, 5-fifth lens, 6-sixth lens, 7-seventh lens, 8-eighth lens, 9-ninth lens, 10-tenth lens, 11-eleventh lens, 12-diaphragm, 13-filter, 14-protective glass, 15-photosensitive chip.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
As shown in fig. 1, the superstar light level high-definition optical lens comprises 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, an eleventh lens 11 and a photosensitive chip 15 which are sequentially arranged from an object plane to an image plane along an optical axis, wherein a diaphragm 12 is arranged between the sixth lens 6 and the seventh lens 7, an optical filter 13 and a protective glass 14 are sequentially arranged between the eleventh lens 11 and the photosensitive chip 15, the lenses are all glass spherical lenses, and focal lengths of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, the seventh lens 7, the eighth lens 8, the ninth lens 9, the tenth lens 10 and the eleventh lens 11 are sequentially negative, positive, negative, positive and positive; the lens is a large aperture lens, fno=0.95.
In the above lens: the first lens 1 is a plano-concave lens, the second lens 2 is a negative meniscus lens, the third lens 3 is a positive meniscus lens, the fourth lens 4 is a biconvex lens, the fifth lens 5 is a positive meniscus lens, the sixth lens 6 is a negative meniscus lens, the seventh lens 7 is a biconvex lens, the eighth lens 8 is a biconcave lens, the ninth lens 9 is a biconvex lens, the tenth lens 10 is a plano-convex lens, and the eleventh lens 11 is a positive meniscus lens.
In the above lens: the first lens 1 is a low-dispersion lens and satisfies that Vd is more than 65 and less than 82; the second lens 2 is a high-dispersion lens, and Vd is less than or equal to 30; the third lens 3 is a high refractive index low dispersion lens, and satisfies Nd > 1.8, 40 < Vd < 70; the fourth lens 4 is a high refractive index lens, satisfying Nd > 1.92; the fifth lens 5 is an ultra-low dispersion lens, and meets Vd > 80; the sixth lens 6 is a low-dispersion lens, which satisfies Vd > 60; the seventh lens 7 is an ultra-low dispersion lens, which satisfies Vd > 65; the eighth lens 8 is a high-dispersion lens, and Vd is less than or equal to 30; the ninth lens 9 is an ultra-low dispersion lens, and meets Vd > 65; the tenth lens 10 is an ultra-low dispersion lens, satisfying Vd > 80; the eleventh lens 11 is an ultra-low dispersion lens, satisfying Vd > 65; where Nd represents the d-ray refractive index of the lens and Vd represents the abbe constant of the lens.
The invention adopts more lenses, wherein the first lens and the second lens are provided with two concave lenses with less bending in order to reduce aberration, and meanwhile, the R1 surface of the first lens is a convex surface, thereby being beneficial to correcting distortion.
The third lens and the fourth lens are made of high-refractive-index materials, the refractive indexes of the third lens and the fourth lens are larger than 1.8, and the respective bending degrees are reduced while the light rays are powerfully deflected, so that the correction of spherical aberration and coma aberration is facilitated, and the high-order aberration can be greatly reduced. And is beneficial to minimizing residual aberration.
The fifth, sixth and seventh, eighth and ninth cemented lenses are low-dispersion lenses for correcting chromatic aberration and secondary spectrum, and class symmetry is used to correct coma and vertical chromatic aberration. Thereby reducing the size of the diffuse spot of the lens.
The tenth lens and the eleventh lens are high-refractive-index low-dispersion lenses for correcting the residual spherical aberration, chromatic aberration and astigmatism of the incident light.
The invention can make the lens achieve the effect of large aperture by limiting the material of the lens.
When the lens is designed initially, the conventional material lens is used, and the high-low temperature reliability simulation evaluation shows that the mechanism back focus variation at high temperature (80 ℃) and the high-temperature (80 ℃) optical back focus variation exceed +0.015mm; the invention compensates the change of the back focus at high and low temperature by using more than 3 ultra-low dispersion material lenses, and the change of the back focus of the mechanism at high temperature (+80 ℃) at present, "-" the change of the back focus of the mechanism at high temperature (+80 ℃) at high temperature) is not more than +/-0.002 mm; the low-temperature (-40 ℃) mechanism back focus variation "-" low-temperature (-40 ℃) optical back focus variation "is not more than +/-0.002 mm, and chromatic aberration and secondary spectrum are subjected to very excellent correction, so that lens aberration is reduced, and therefore, the high-low temperature performance problem and the lens aberration problem are solved.
Practical design examples are listed, wherein the angle of view is 70 degrees, the resolution is 800 ten thousand pixels, the total mechanical length is within 46mm, and the device can normally work in an environment of-40 ℃ to +80 ℃):
TABLE 1 System data
In table 1 above:
the surface numbers 1 and 2 respectively represent a first surface and a second surface of the first lens 1, and the material of the first lens 1 is H-QK3L;
The surface numbers 3 and 4 respectively represent a first surface and a second surface of the second lens 2, and the material of the second lens 2 is H-ZF11;
The surface numbers 5 and 6 respectively show a first surface and a second surface of the third lens 3, and the material of the third lens 3 is H-ZLAF69;
The surface numbers 7 and 8 respectively represent a first surface and a second surface of the fourth lens 4, and the material of the fourth lens 4 is H-ZLZF89L;
The surface numbers 9 and 10 respectively represent a first surface and a second surface of the fifth lens 5, and the material of the fifth lens 5 is FCD1;
the surface numbers 10 and 11 respectively indicate a first surface and a second surface of the sixth lens 6, and the material of the sixth lens 6 is H-K11;
The surface numbers 13 and 14 respectively represent a first surface and a second surface of the seventh lens 7, and the substrate material of the seventh lens 7 is FCD515;
the surface numbers 14 and 15 respectively represent a first surface and a second surface of the eighth lens 8, and the substrate material of the eighth lens 8 is H-ZF3;
the surface numbers 15 and 16 respectively represent a first surface and a second surface of the ninth lens 9, and the substrate material of the ninth lens 9 is FCD515;
the surface numbers 17 and 18 respectively represent a first surface and a second surface of the tenth lens 10, and the substrate material of the tenth lens 10 is FCD1;
The surface numbers 19 and 20 respectively represent a first surface and a second surface of the eleventh lens 11, and the substrate material of the eleventh lens 11 is FCD515;
The surface numbers 21 and 22 respectively represent a first surface and a second surface of the protective glass 13, and the substrate material of the protective glass 13 is H-K9L;
the surface numbers 23 and 24 respectively represent a first surface and a second surface of the protective glass 14, and the substrate material of the protective glass 13 is H-K9L;
wherein the first surface is a surface facing the object surface, and the second surface is a surface facing the image surface.
The detection results of the lens are shown in the accompanying drawings 2-5, the spherical aberration is corrected to be within +/-0.035 mm in the figure 2, and the spherical aberration correction is better in the spectral bandwidth, so that the cleanliness of the real shot picture of the lens can be improved; FIG. 3 shows that astigmatism and field curvature can be corrected to proper ranges, so that the meridional resolution can be similar to the sagittal resolution, and the lens picture resolution is uniform; in FIG. 4, the vertical axis chromatic aberration, the relative vertical axis chromatic aberration of f light, d light and c light is within 1.5 μm, the g light vertical axis chromatic aberration is within 5 μm, and the chromatic aberration correction is better, so that the requirement of the resolution quality of the lens can be met; the MTF graph of FIG. 5 shows that within the center field of view and 0.7 field of view, the 200cycles/mm spatial frequency has higher sharpness, indicating that the lens has excellent resolution and high resolution. Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a high-definition optical lens of super star light level which characterized in that: the lens comprises 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) which are sequentially arranged from an object plane to an image plane along an optical axis, wherein a diaphragm (12) is arranged between the sixth lens (6) and the seventh lens (7), the lenses are glass spherical lenses, and the focal lengths of the first lens (1), the second lens (2), the third lens (3), the fourth lens (4), the fifth lens (5), the sixth lens (6), the seventh lens (7), the eighth lens (8), the ninth lens (9), the tenth lens (10) and the eleventh lens (11) are sequentially negative, positive, negative, positive and positive; the number of lens sheets with focal power in the superstar light level high-definition optical lens is 11, and the parameters of the superstar light level high-definition optical lens are shown in the following table:
the surface numbers 1 and 2 represent the first surface and the second surface of the first lens 1, respectively;
The surface numbers 3 and 4 denote the first surface and the second surface of the second lens 2, respectively;
the surface numbers 5 and 6 denote the first surface and the second surface of the third lens 3, respectively;
the surface numbers 7 and 8 denote the first surface and the second surface of the fourth lens 4, respectively;
the surface numbers 9 and 10 denote the first surface and the second surface of the fifth lens 5, respectively;
the surface numbers 10 and 11 denote the first surface and the second surface of the sixth lens 6, respectively;
the surface numbers 13 and 14 denote the first surface and the second surface of the seventh lens 7, respectively;
the surface numbers 14 and 15 denote the first surface and the second surface of the eighth lens 8, respectively;
the surface numbers 15 and 16 denote the first surface and the second surface of the ninth lens 9, respectively;
The surface numbers 17 and 18 denote the first surface and the second surface of the tenth lens 10, respectively;
The surface numbers 19 and 20 denote the first surface and the second surface of the eleventh lens 11, respectively; the first surface is a surface facing the object surface, and the second surface is a surface facing the image surface.
2. The superstar light level high-definition optical lens of claim 1, wherein: the lens is a large aperture lens, fno=0.95.
3. The superstar light level high-definition optical lens of claim 1, wherein: the optical lens comprises an eleventh lens (11), and is characterized by further comprising a photosensitive chip (15), wherein the photosensitive chip (15) is arranged behind the eleventh lens (11), and an optical filter (13) and a protective glass (14) are sequentially arranged between the photosensitive chip and the eleventh lens.
4. A superstar light level high-definition optical lens as defined in claim 3, wherein: the size of the photosensitive chip (15) is 1/1.8', and the resolution is 800 ten thousand pixels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154658.2A CN109061839B (en) | 2018-09-30 | 2018-09-30 | Super star light level high definition optical lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154658.2A CN109061839B (en) | 2018-09-30 | 2018-09-30 | Super star light level high definition optical lens |
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| CN109061839A CN109061839A (en) | 2018-12-21 |
| CN109061839B true CN109061839B (en) | 2024-04-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112285882B (en) * | 2020-10-09 | 2022-10-04 | 浙江大华技术股份有限公司 | Optical imaging lens and monitor |
| CN113219638B (en) * | 2021-04-28 | 2022-07-22 | 江苏大学 | Ultra-wide-angle high-definition monitoring lens device, monitoring system and correction algorithm |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330873A (en) * | 2014-11-29 | 2015-02-04 | 福建福光数码科技有限公司 | Day and night high-resolution fish-eye lens |
| CN106918897A (en) * | 2017-04-27 | 2017-07-04 | 河南翊轩光电科技有限公司 | A kind of compact ultra-wide angle day and night confocal opticses camera lens |
| CN208705554U (en) * | 2018-09-30 | 2019-04-05 | 河南翊轩光电科技有限公司 | A kind of superstar lighting level high definition optical lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4827193B2 (en) * | 2007-03-23 | 2011-11-30 | オリンパスイメージング株式会社 | Electronic imaging device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330873A (en) * | 2014-11-29 | 2015-02-04 | 福建福光数码科技有限公司 | Day and night high-resolution fish-eye lens |
| CN106918897A (en) * | 2017-04-27 | 2017-07-04 | 河南翊轩光电科技有限公司 | A kind of compact ultra-wide angle day and night confocal opticses camera lens |
| CN208705554U (en) * | 2018-09-30 | 2019-04-05 | 河南翊轩光电科技有限公司 | A kind of superstar lighting level high definition optical lens |
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