CN113109923A - Large-aperture high-definition vehicle-mounted lens - Google Patents
Large-aperture high-definition vehicle-mounted lens Download PDFInfo
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- CN113109923A CN113109923A CN202110355772.7A CN202110355772A CN113109923A CN 113109923 A CN113109923 A CN 113109923A CN 202110355772 A CN202110355772 A CN 202110355772A CN 113109923 A CN113109923 A CN 113109923A
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Abstract
The invention discloses a large-aperture high-definition vehicle-mounted lens, which sequentially comprises a positive focal power front lens group A01, an aperture STOP STOP, a positive focal power rear lens group A02, an optical filter and an image surface from an object space to an image space; the positive focal power front lens group A01 is composed of a negative focal power first lens L1, a negative focal power second lens L2 and a positive focal power third lens L3, wherein the negative focal power first lens L1 is a meniscus lens, the negative focal power second lens L2 is a double-concave lens, and the positive focal power third lens L3 is a double-convex lens; the positive focal power rear lens group A02 is composed of a positive focal power fourth lens L4, a negative focal power fifth lens L5, a positive focal power sixth lens L6 and a positive focal power seventh lens L7, wherein the positive focal power fourth lens L4 is a biconvex lens, and the negative focal power fifth lens L5 is a meniscus lens. Compared with the prior art, the method has stronger capacity of identifying the low-illumination target and can meet the requirement of identifying the target.
Description
Technical Field
The invention relates to the technical field of optical lenses, in particular to a large-aperture high-definition vehicle-mounted lens.
Background
In recent years, automobile intellectualization and automation also become a research hotspot for the development of the automobile industry, and auxiliary driving and automatic driving become the future research directions of many enterprises. And the intelligent automobile is required to realize auxiliary driving and automatic driving and is indispensable based on a large-aperture and high-definition vehicle-mounted lens target identification system.
At present, the pixel resolution ratio of common vehicle-mounted lenses in the market is low, the aperture is small, the low-illumination target identification capability of the lenses is poor, and the target identification requirement cannot be met.
Disclosure of Invention
In order to solve the technical defects, the invention aims to provide a large-aperture high-definition vehicle-mounted lens which has strong low-illumination target identification capability and can meet the requirement of target identification.
In order to achieve the purpose, the invention adopts the technical scheme that: a large-aperture high-definition vehicle-mounted lens comprises a front lens group A01 with positive focal power, an aperture STOP STOP, a rear lens group A02 with positive focal power, an optical filter and an image surface in sequence from an object space to an image space;
the positive focal power front lens group A01 is composed of a negative focal power first lens L1, a negative focal power second lens L2 and a positive focal power third lens L3, wherein the negative focal power first lens L1 is a meniscus lens, the negative focal power second lens L2 is a double-concave lens, and the positive focal power third lens L3 is a double-convex lens;
the positive focal power rear lens group A02 consists of a positive focal power fourth lens L4, a negative focal power fifth lens L5, a positive focal power sixth lens L6 and a positive focal power seventh lens L7, the positive focal power fourth lens L4 is a biconvex lens, the negative focal power fifth lens L5 is a meniscus lens, the positive focal power sixth lens L6 is a biconvex lens, the positive focal power seventh lens L7 is a meniscus lens, and the positive focal power fourth lens L4 and the negative focal power fifth lens L5 form a positive focal power cemented lens group B01;
the aperture STOP STOP is positioned between the positive power front lens group A01 and the positive power rear lens group A02, and the optical filter is positioned between the positive power rear lens group A02 and an image surface;
the distance from the vertex of the back surface of the negative power first lens L1 to the vertex of the front surface of the negative power second lens L2 is 2.5-2.6 mm;
the distance from the vertex of the rear surface of the negative focal power second lens L2 to the vertex of the front surface of the positive focal power third lens L3 is 1.5-1.6 mm;
the distance from the vertex of the rear surface of the positive focal power third lens L3 to the vertex of the front surface of the positive focal power cemented lens group is 3.05-3.15 mm;
the distance from the vertex of the rear surface of the positive focal power cemented lens group B01 to the vertex of the front surface of the positive focal power sixth lens L6 is 0.06-0.16 mm.
Further, the distance from the vertex of the rear surface of the negative power first lens L1 to the vertex of the front surface of the negative power second lens L2 is 2.55 mm.
The distance from the vertex of the back surface of the negative-power second lens L2 to the vertex of the front surface of the positive-power third lens L3 is 1.54 mm;
the distance from the vertex of the rear surface of the positive focal power third lens L3 to the vertex of the front surface of the positive focal power cemented lens group is 3.11 mm;
the distance from the vertex of the rear surface of the positive power cemented lens group B01 to the vertex of the front surface of the positive power sixth lens L6 is 0.11 mm.
The negative-power second lens L2 is made of an ultra-low dispersion material capable of reducing chromatic aberration of the lens.
The invention has the beneficial effects that: according to the large-aperture high-definition vehicle-mounted lens for target identification, which is designed according to the scheme, the near-distance target can be identified, and the recognition capability of the automatic driving automobile on the near-distance target is improved by matching with other vehicle-mounted radars. The vehicle-mounted camera system for identifying the targets has the advantages of large lens angle, large aperture and higher resolution, can clearly identify the targets in a large-range and low-illumination environment, can early warn the targets in front of the vehicle in advance, is short in total length, and is particularly suitable for vehicle-mounted camera systems for identifying the targets.
Drawings
The structure and features of the invention will be further described with reference to the accompanying drawings and examples.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of light transmission according to an embodiment of the invention.
FIG. 3 is a schematic diagram of MTF (modulation transfer function) of an embodiment of the present invention.
FIG. 4 is a field curvature diagram according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of distortion of an embodiment of the present invention.
FIG. 6 is a schematic diagram of a dot-column diagram according to an embodiment of the present invention.
In fig. 1, 8 is the filter, 9 is the image plane.
Detailed Description
Referring to fig. 1-6, which are an embodiment of the present invention, a large-aperture high-definition onboard lens is disclosed, which comprises, in order from an object side to an image side, a front positive power lens group a01, an aperture STOP, a rear positive power lens group a02, a filter 8, and an image plane 9;
the positive focal power front lens group A01 is composed of a negative focal power first lens L1, a negative focal power second lens L2 and a positive focal power third lens L3, wherein the negative focal power first lens L1 is a meniscus lens, the negative focal power second lens L2 is a double-concave lens, and the positive focal power third lens L3 is a double-convex lens;
the positive focal power rear lens group A02 consists of a positive focal power fourth lens L4, a negative focal power fifth lens L5, a positive focal power sixth lens L6 and a positive focal power seventh lens L7, the positive focal power fourth lens L4 is a biconvex lens, the negative focal power fifth lens L5 is a meniscus lens, the positive focal power sixth lens L6 is a biconvex lens, the positive focal power seventh lens L7 is a meniscus lens, and the positive focal power fourth lens L4 and the negative focal power fifth lens L5 form a positive focal power cemented lens group B01;
the aperture STOP STOP is positioned between the positive power front lens group A01 and the positive power rear lens group A02, and the optical filter is positioned between the positive power rear lens group A02 and an image surface;
the distance from the vertex of the back surface of the negative-power first lens L1 to the vertex of the front surface of the negative-power second lens L2 is 2.55 mm.
The distance from the vertex of the back surface of the negative-power second lens L2 to the vertex of the front surface of the positive-power third lens L3 is 1.54 mm;
the distance from the vertex of the rear surface of the positive focal power third lens L3 to the vertex of the front surface of the positive focal power cemented lens group is 3.11 mm;
the distance from the vertex of the rear surface of the positive power cemented lens group B01 to the vertex of the front surface of the positive power sixth lens L6 is 0.11 mm.
The negative-power second lens L2 is made of an ultra-low dispersion material capable of reducing chromatic aberration of the lens.
The relevant parameters of the lenses are as follows:
the preferred values of the above-mentioned lens-related parameters are as follows:
referring to fig. 2, a light ray transmission diagram of the embodiment of the invention shows that the total length of the system is less than 21.0027mm, which is very suitable for a vehicle-mounted camera system.
Referring to fig. 3, MTF (modulation transfer function) curves of the embodiment of the present invention are shown, wherein the abscissa represents spatial frequency in units: line pair/millimeter (lp/mm), the ordinate represents the MTF value. As can be seen from the figure, the concentration ratio of the MTF curve in the embodiment is relatively high, which shows that the technical scheme of the embodiment has excellent imaging consistency on the whole image plane, a high-definition image can be obtained on the whole image plane, and at 167lp/mm, all the MTF values of the field of view are greater than 39.8%.
Fig. 4 is a schematic view of the curvature of field of the embodiment of the present invention, in which the abscissa represents the distance between T and S of the same color and the magnitude of astigmatism, and the ordinate represents the field of view. As can be seen from fig. 4, the field curvature is effectively controlled in the present embodiment.
Referring to fig. 5, a distortion diagram of an embodiment of the present invention is shown, wherein the abscissa represents the distortion percentage and the ordinate represents the field of view range. As can be seen from fig. 5, the distortion in the entire image plane is at most-43%.
FIG. 6 is a schematic diagram of a dot-column diagram according to an embodiment of the present invention. As can be seen from fig. 6, the imaging points in each field almost converge to an ideal point, indicating that the present embodiment has good imaging performance.
The above-described embodiments are only some of the embodiments of the present invention, and the concept and scope of the present invention are not limited to the details of the above-described exemplary embodiments. Therefore, various modifications and improvements made by others skilled in the art according to the technical solutions of the present invention without departing from the design concept of the present invention shall fall within the protection scope of the present invention, and the protection content of the present invention is fully set forth in the claims.
Claims (8)
1. The utility model provides an on-vehicle camera lens of big light ring high definition which characterized in that: the lens comprises a positive focal power front lens group A01, an aperture STOP STOP, a positive focal power rear lens group A02, an optical filter and an image plane in sequence from an object space to an image space;
the positive focal power front lens group A01 is composed of a negative focal power first lens L1, a negative focal power second lens L2 and a positive focal power third lens L3, wherein the negative focal power first lens L1 is a meniscus lens, the negative focal power second lens L2 is a double-concave lens, and the positive focal power third lens L3 is a double-convex lens;
the positive focal power rear lens group A02 consists of a positive focal power fourth lens L4, a negative focal power fifth lens L5, a positive focal power sixth lens L6 and a positive focal power seventh lens L7, the positive focal power fourth lens L4 is a biconvex lens, the negative focal power fifth lens L5 is a meniscus lens, the positive focal power sixth lens L6 is a biconvex lens, the positive focal power seventh lens L7 is a meniscus lens, and the positive focal power fourth lens L4 and the negative focal power fifth lens L5 form a positive focal power cemented lens group B01;
the aperture STOP STOP is positioned between the positive power front lens group A01 and the positive power rear lens group A02, and the optical filter is positioned between the positive power rear lens group A02 and an image surface;
the distance from the vertex of the back surface of the negative power first lens L1 to the vertex of the front surface of the negative power second lens L2 is 2.5-2.6 mm;
the distance from the vertex of the rear surface of the negative focal power second lens L2 to the vertex of the front surface of the positive focal power third lens L3 is 1.5-1.6 mm;
the distance from the vertex of the rear surface of the positive focal power third lens L3 to the vertex of the front surface of the positive focal power cemented lens group is 3.05-3.15 mm;
the distance from the vertex of the rear surface of the positive focal power cemented lens group B01 to the vertex of the front surface of the positive focal power sixth lens L6 is 0.06-0.16 mm.
2. The large-aperture high-definition vehicle-mounted lens according to claim 1, characterized in that: the relevant parameters of the negative power first lens L1, the negative power second lens L2, the positive power third lens L3, the positive power fourth lens L4, the negative power fifth lens L5, the positive power sixth lens L6 and the positive power seventh lens L7 are as follows:
3. the large-aperture high-definition vehicle-mounted lens for target recognition according to claim 2, characterized in that: the relevant parameters of the negative power first lens L1, the negative power second lens L2, the positive power third lens L3, the positive power fourth lens L4, the negative power fifth lens L5, the positive power sixth lens L6 and the positive power seventh lens L7 are as follows:
4. the large-aperture high-definition vehicle-mounted lens according to claim 1, characterized in that: the distance from the vertex of the back surface of the negative-power first lens L1 to the vertex of the front surface of the negative-power second lens L2 is 2.55 mm.
5. The large-aperture high-definition vehicle-mounted lens according to claim 1, characterized in that: the distance from the vertex of the back surface of the negative-power second lens L2 to the vertex of the front surface of the positive-power third lens L3 is 1.54 mm.
6. The large-aperture high-definition vehicle-mounted lens according to claim 1, characterized in that: the distance from the vertex of the back surface of the positive power third lens L3 to the vertex of the front surface of the positive power cemented lens group is 3.11 mm.
7. The large-aperture high-definition vehicle-mounted lens according to claim 1, characterized in that: the distance from the vertex of the rear surface of the positive power cemented lens group B01 to the vertex of the front surface of the positive power sixth lens L6 is 0.11 mm.
8. The large-aperture high-definition vehicle-mounted lens according to claim 1, characterized in that: the negative-power second lens L2 is made of an ultra-low dispersion material capable of reducing chromatic aberration of the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110355772.7A CN113109923B (en) | 2021-04-01 | 2021-04-01 | Large-aperture high-definition vehicle-mounted lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110355772.7A CN113109923B (en) | 2021-04-01 | 2021-04-01 | Large-aperture high-definition vehicle-mounted lens |
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| CN113109923A true CN113109923A (en) | 2021-07-13 |
| CN113109923B CN113109923B (en) | 2024-06-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204065536U (en) * | 2012-02-22 | 2014-12-31 | 富士胶片株式会社 | Imaging lens system and possess the camera head of this imaging lens system |
| JP2015025951A (en) * | 2013-07-26 | 2015-02-05 | キヤノン株式会社 | Optical system and imaging apparatus having the same |
| JP2017009973A (en) * | 2015-06-26 | 2017-01-12 | 京セラ株式会社 | Imaging lens and imaging apparatus |
| CN106772941A (en) * | 2016-12-27 | 2017-05-31 | 东莞市宇瞳光学科技股份有限公司 | The big thang-kng small-sized wide-angle lens of 2.8mm |
| CN108761743A (en) * | 2016-07-13 | 2018-11-06 | 浙江舜宇光学有限公司 | Seven chip wide-angle lens |
| CN214895982U (en) * | 2021-04-01 | 2021-11-26 | 南阳利达光电有限公司 | Large-aperture high-definition vehicle-mounted lens |
-
2021
- 2021-04-01 CN CN202110355772.7A patent/CN113109923B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204065536U (en) * | 2012-02-22 | 2014-12-31 | 富士胶片株式会社 | Imaging lens system and possess the camera head of this imaging lens system |
| JP2015025951A (en) * | 2013-07-26 | 2015-02-05 | キヤノン株式会社 | Optical system and imaging apparatus having the same |
| JP2017009973A (en) * | 2015-06-26 | 2017-01-12 | 京セラ株式会社 | Imaging lens and imaging apparatus |
| CN108761743A (en) * | 2016-07-13 | 2018-11-06 | 浙江舜宇光学有限公司 | Seven chip wide-angle lens |
| CN106772941A (en) * | 2016-12-27 | 2017-05-31 | 东莞市宇瞳光学科技股份有限公司 | The big thang-kng small-sized wide-angle lens of 2.8mm |
| CN214895982U (en) * | 2021-04-01 | 2021-11-26 | 南阳利达光电有限公司 | Large-aperture high-definition vehicle-mounted lens |
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| CN113109923B (en) | 2024-06-07 |
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