CN210348042U - High-resolution lens - Google Patents
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- CN210348042U CN210348042U CN201921132640.2U CN201921132640U CN210348042U CN 210348042 U CN210348042 U CN 210348042U CN 201921132640 U CN201921132640 U CN 201921132640U CN 210348042 U CN210348042 U CN 210348042U
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Abstract
The utility model belongs to the technical field of the camera lens, concretely relates to high resolution camera lens, optical system includes along the first lens G1 that has positive focal power and meniscus structure that the optical axis arranged in proper order from the thing side to picture side, second lens G2 that has positive focal power and meniscus structure, third lens G3 that has negative focal power and meniscus structure, fourth lens G4 that has positive focal power and meniscus structure, fifth lens G5 that has negative focal power and meniscus structure, sixth lens G6 that has negative focal power and biconcave structure, seventh lens G7 that has positive focal power and biconvex structure, eighth lens G8 that has positive focal power and meniscus structure, and ninth lens G9 of positive focal power and meniscus structure. The utility model discloses can satisfy the application demand of high resolution, big image plane, low distortion, through the mode that whole group was focused, realize realizing high resolution formation of image at magnification 0.22-0.30 within range.
Description
Technical Field
The utility model belongs to the technical field of the camera lens, concretely relates to high resolution camera lens.
Background
Industrial vision systems use machines instead of the human eye for various measurements and judgments. It converts the object into image signal through camera and lens, transmits to special image processing software, and converts into digital signal according to pixel distribution, brightness, color and other information; the image processing software performs various calculations on these signals to extract the features of the target, and then controls the operation of the on-site equipment according to the result of the discrimination.
As a core component of a vision system, the quality of a lens greatly affects the imaging quality, but the optical performance of the domestic existing lens has the defects of large optical distortion, low resolution and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the defects of the prior art, the lens with high resolution is provided, the application requirements of high resolution, large image plane and low distortion can be met, and high resolution imaging can be realized within the range of 0.22-0.30 times of magnification by the whole group focusing mode.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-resolution lens comprises a mechanical part and an optical system arranged in the mechanical part, wherein the optical system comprises a first lens G1 with positive focal power and a meniscus structure, a second lens G2 with positive focal power and a meniscus structure, a third lens G3 with negative focal power and a meniscus structure, a fourth lens G4 with positive focal power and a meniscus structure, a fifth lens G5 with negative focal power and a meniscus structure, a sixth lens G6 with negative focal power and a biconcave structure, a seventh lens G7 with positive focal power and a biconvex structure, an eighth lens G8 with positive focal power and a meniscus structure, and a ninth lens G9 with positive focal power and a meniscus structure which are sequentially arranged from the object side to the image side along the optical axis;
wherein the second lens G2 and the third lens G3 are cemented to form a first cemented lens B1, the fourth lens G4 and the fifth lens G5 are cemented to form a second cemented lens B2, the sixth lens G6 and the seventh lens G7 are cemented to form a third cemented lens B3, the focal length of the optical system is f, the focal length of the first cemented lens is fB1, the focal length of the second cemented lens is fB2, and the focal length of the third cemented lens is fB3, which satisfy the following relations: 9.3< | fB1/f | < 9.8; 1.5< | fB2/f | < 2; 1< | fB3/f | < 1.5.
As an improvement of the high-resolution lens of the present invention, the first lens G1, the second lens G2, the third lens G3, the fourth lens G4, the fifth lens G5, the sixth lens G6, the seventh lens G7, the eighth lens G8, and the ninth lens G9 are all spherical lenses.
As an improvement of the high-resolution lens described in the present invention, the focal length of the first lens G1 is f1, and it and the focal length f of the optical system satisfy the following relation: 0.5< | f1/f | <1.
As an improvement of the high-resolution lens described in the present invention, the focal length of the second lens G2 is f2, which satisfies the following relation between the focal length f of the optical system: 0.5< | f2/f | < 1; the focal length of the third lens G3 is f3, and the relationship between the focal length f of the third lens and the focal length f of the optical system is as follows: 0.5< | f3/f | <1.
As an improvement of the high-resolution lens described in the present invention, the focal length of the fourth lens G4 is f4, which satisfies the following relation between the focal length f of the optical system: 0.5< | f4/f | < 1; the focal length of the fifth lens G5 is f5, and the relationship between the focal length f of the optical system and the focal length f of the optical system is as follows: 0.2< | f5/f | < 0.7.
As an improvement of the high-resolution lens described in the present invention, the focal length of the sixth lens element G6 is f6, which satisfies the following relation between the focal length f of the optical system: 0.2< | f6/f | < 0.7; the focal length of the seventh lens G7 is f7, and the relationship between the focal length f of the seventh lens and the focal length f of the optical system is as follows: 0.2< | f7/f | < 0.7.
As an improvement of the high-resolution lens described in the present invention, the focal length of the eighth lens G8 is f8, which satisfies the following relation between the focal length f of the optical system: 1< | f8/f | < 1.5; the focal length of the ninth lens G9 is f9, and the relationship between the focal length f of the optical system and the focal length f is as follows: 2< | f9/f | < 2.5.
As an improvement of the high-resolution lens of the present invention, the distance from the front surface of the first lens G1 to the rear surface of the ninth lens G9 is s, which satisfies the following relation between the focal length f of the optical system: 0.5< | s/f | <1.
As an improvement of a high resolution camera lens, optical system's half image height is h, it with satisfy the relational expression between optical system's the focus f: 0.2< | h/f | < 0.5.
As an improvement of a high resolution camera lens, high resolution camera lens still includes the diaphragm, the diaphragm sets up fifth lens G5 with between the sixth lens G6.
The beneficial effects of the utility model reside in that, the utility model discloses a mechanical parts and install in the inside optical system of mechanical parts, optical system includes along the optical axis from the thing side to the image side first lens G1 that has positive focal power and meniscus structure, second lens G2 that has positive focal power and meniscus structure, third lens G3 that has negative focal power and meniscus structure, fourth lens G4 that has positive focal power and meniscus structure, fifth lens G5 that has negative focal power and meniscus structure, sixth lens G6 that has negative focal power and biconcave structure, seventh lens G7 that has positive focal power and biconvex structure, eighth lens G8 that has positive focal power and meniscus structure, and ninth lens G9 that has positive focal power and meniscus structure; wherein the second lens G2 and the third lens G3 are cemented to form a first cemented lens B1, the fourth lens G4 and the fifth lens G5 are cemented to form a second cemented lens B2, the sixth lens G6 and the seventh lens G7 are cemented to form a third cemented lens B3, the focal length of the optical system is f, the focal length of the first cemented lens is fB1, and the second glue isThe focal length of the combined lens is fB2, the focal length of the third cemented lens is fB3, and the following relations are satisfied: 9.3<|fB1/f|<9.8；1.5<|fB2/f|<2；1<|fB3/f|<1.5. The utility model discloses a glass sphere lens, the formation of image target surface is greater than
MTF value is greater than 0.3 when spatial frequency is 100lp/mm, and distorts the absolute value when 0.26 times and is less than 0.02% in the full field of view, and marginal visual field relative illumination is greater than 60%, the utility model discloses can realize high resolution at magnification 0.22-0.30 within range formation of image, can satisfy the demand of most high-end product on the machine vision market.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
As shown in fig. 1, a high-resolution lens includes a mechanical component and an optical system installed inside the mechanical component, the optical system includes a first lens G1 having a positive power and a meniscus structure, a second lens G2 having a positive power and a meniscus structure, a third lens G3 having a negative power and a meniscus structure, a fourth lens G4 having a positive power and a meniscus structure, a fifth lens G5 having a negative power and a meniscus structure, a sixth lens G6 having a negative power and a biconcave structure, a seventh lens G7 having a positive power and a biconvex structure, an eighth lens G8 having a positive power and a meniscus structure, and a ninth lens G9 having a positive power and a meniscus structure, which are arranged in order from an object side to an image side along an optical axis;
the second lens G2 and the third lens G3 are cemented to form a first cemented lens B1, the fourth lens G4 and the fifth lens G5 are cemented to form a second cemented lens B2, the sixth lens G6 and the seventh lens G7 are cemented to form a third cemented lens B3, the focal length of the optical system is f, the focal length of the first cemented lens is fB1, the focal length of the second cemented lens is fB2, and the focal length of the third cemented lens is fB3, which respectively satisfy the following relations: 9.3< | fB1/f | < 9.8; 1.5< | fB2/f | < 2; 1< | fB3/f | < 1.5.
Preferably, the first lens G1, the second lens G2, the third lens G3, the fourth lens G4, the fifth lens G5, the sixth lens G6, the seventh lens G7, the eighth lens G8, and the ninth lens G9 are all spherical lenses.
Preferably, the focal length of the first lens G1 is f1, which satisfies the following relation with the focal length f of the optical system: 0.5< | f1/f | <1.
Preferably, the focal length of the second lens G2 is f2, which satisfies the following relation with the focal length f of the optical system: 0.5< | f2/f | < 1; the focal length f3 of the third lens G3 satisfies the following relation with the focal length f of the optical system: 0.5< | f3/f | <1.
Preferably, the focal length of the fourth lens G4 is f4, and the relationship between the focal length f of the optical system and f is as follows: 0.5< | f4/f | < 1; the focal length f5 of the fifth lens G5 satisfies the following relation with the focal length f of the optical system: 0.2< | f5/f | < 0.7.
Preferably, the focal length of the sixth lens G6 is f6, and the relationship between the focal length f of the optical system and the focal length f is as follows: 0.2< | f6/f | < 0.7; the focal length f7 of the seventh lens G7 satisfies the following relation with the focal length f of the optical system: 0.2< | f7/f | < 0.7.
Preferably, the focal length of the eighth lens G8 is f8, which satisfies the following relation with the focal length f of the optical system: 1< | f8/f | < 1.5; the focal length f9 of the ninth lens G9 satisfies the following relation with the focal length f of the optical system: 2< | f9/f | < 2.5.
Preferably, the distance from the front surface of the first lens G1 to the rear surface of the ninth lens G9 is s, which satisfies the relationship with the focal length f of the optical system: 0.5< | s/f | <1.
Preferably, the half-image height of the optical system is h, and the half-image height satisfies the relation with the focal length f of the optical system: 0.2< | h/f | < 0.5.
Preferably, the high-resolution lens further includes a stop disposed between the fifth lens G5 and the sixth lens G6. The aperture of the diaphragm is adjustable within the range of F4.2-F32.
In this example, the optical system data is as follows:
| surface of | Radius (mm) | Thickness (mm) | Refractive index |
| Front surface of G1 | 42.5 | 9.0 | 1.5 |
| Rear surface of G1 | 283.8 | 0.4 | |
| Front surface of B1 | 39.9 | 7.6 | 1.5 |
| B1 gluing surface | 437.0 | 2.2 | 1.8 |
| Rear surface of B1 | 54.7 | 0.8 | |
| Front surface of B2 | 40.0 | 4.5 | 2.0 |
| B2 gluing surface | 72.2 | 2.2 | 1.7 |
| Rear surface of B2 | 23.5 | 14.7 | |
| Diaphragm | Infinity | 13.2 | |
| Front surface of B3 | -24.1 | 6.9 | 1.7 |
| B3 gluing surface | 180.7 | 8.5 | 1.7 |
| Rear surface of B3 | -45.6 | 0.1 | |
| Front surface of G8 | -195.5 | 4.9 | 1.7 |
| Rear surface of G8 | -60.2 | 0.1 | |
| Front surface of G9 | -137.2 | 4.0 | 1.6 |
| Rear surface of G9 | -71.4 | 89.1 | |
| Image plane | Infinity | - |
| f1(mm) | fB1(mm) | fB2(mm) | fB3(mm) | f8(mm) | F9(mm) | f(mm) | s(mm) | h(mm) |
| 99.2 | -1093.9 | -207.0 | -117.9 | 123.1 | 240.6 | 116 | 79.0 | 41.0 |
Each relation:
|f1/f|＝0.9；|f2/f|＝0.8；|f3/f|＝0.6；|f4/f|＝0.7；
|f5/f|＝0.5；|f6/f|＝0.3；|f7/f|＝0.5；|f8/f|＝1.1；|f9/f|＝2.1
|fB1/f|＝9.4；|fB2/f|＝1.8；|fB3/f|＝1.0；
|S/f|＝0.7；|h/f|＝0.4；
satisfy the relation:
0.5<|f1/f|<1；0.5<|f2/f|<1；0.5<|f3/f|<1；0.5<|f4/f|<1；
0.2<|f5/f|<0.7；0.2<|f6/f|<0.7；0.2<|f7/f|<0.7；1<|f8/f|<1.5；2<|f9/f|<2.5
9.3<|fB1/f|<9.8；1.5<|fB2/f|<2；1<|fB3/f|<1.5
0.5<|s/f|<1；0.2<|h/f|<0.5。
in this example, with the above structure, a high-resolution lens is realized. The focal length of the lens is 116mm, the relative aperture D/f is 1:4.2, the full field angle FOV is 31.1 degrees, the maximum image plane is 82mm, the full field distortion is less than 0.02 percent, and high-resolution imaging within the range of magnification of 0.22-0.30X is realized through the whole group focusing mode.
In the focusing process of the optical system, the relative position of the rear surface of the ninth lens and the camera chip can be adjusted to achieve the purpose of zooming.
The utility model discloses a glass sphere lens, the formation of image target surface is greater than
MTF value is greater than 0.3 when spatial frequency is 100lp/mm, and distorts the absolute value when 0.26 times and is less than 0.02% in the full field of view, and marginal visual field relative illumination is greater than 60%, the utility model discloses can realize high resolution at magnification 0.22-0.30 within range formation of image, can satisfy the demand of most high-end product on the machine vision market.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A high-resolution lens includes a mechanical component and an optical system installed inside the mechanical component, characterized in that: the optical system comprises a first lens G1 with positive focal power and a meniscus structure, a second lens G2 with positive focal power and a meniscus structure, a third lens G3 with negative focal power and a meniscus structure, a fourth lens G4 with positive focal power and a meniscus structure, a fifth lens G5 with negative focal power and a meniscus structure, a sixth lens G6 with negative focal power and a biconcave structure, a seventh lens G7 with positive focal power and a biconvex structure, an eighth lens G8 with positive focal power and a meniscus structure, and a ninth lens G9 with positive focal power and a meniscus structure which are sequentially arranged from the object side to the image side along the optical axis;
wherein the second lens G2 and the third lens G3 are cemented to form a first cemented lens B1, the fourth lens G4 and the fifth lens G5 are cemented to form a second cemented lens B2, the sixth lens G6 and the seventh lens G7 are cemented to form a third cemented lens B3, the focal length of the optical system is f, the focal length of the first cemented lens is fB1, the focal length of the second cemented lens is fB2, and the focal length of the third cemented lens is fB3, which satisfy the following relations: 9.3< | fB1/f | < 9.8; 1.5< | fB2/f | < 2; 1< | fB3/f | < 1.5.
2. A high resolution lens as defined in claim 1, wherein: the first lens G1, the second lens G2, the third lens G3, the fourth lens G4, the fifth lens G5, the sixth lens G6, the seventh lens G7, the eighth lens G8, and the ninth lens G9 are all spherical lenses.
3. A high resolution lens according to claim 1 or 2, wherein: the focal length of the first lens G1 is f1, and the relationship between the focal length f of the first lens and the focal length f of the optical system is as follows: 0.5< | f1/f | <1.
4. A high resolution lens according to claim 1 or 2, wherein: the focal length of the second lens G2 is f2, and the relationship between the focal length f of the second lens and the focal length f of the optical system is as follows: 0.5< | f2/f | < 1; the focal length of the third lens G3 is f3, and the relationship between the focal length f of the third lens and the focal length f of the optical system is as follows: 0.5< | f3/f | <1.
5. A high resolution lens according to claim 1 or 2, wherein: the focal length of the fourth lens G4 is f4, and the relationship between the focal length f of the fourth lens and the focal length f of the optical system is as follows: 0.5< | f4/f | < 1; the focal length of the fifth lens G5 is f5, and the relationship between the focal length f of the optical system and the focal length f of the optical system is as follows: 0.2< | f5/f | < 0.7.
6. A high resolution lens according to claim 1 or 2, wherein: the focal length of the sixth lens G6 is f6, and the relationship between the focal length f of the sixth lens and the focal length f of the optical system is as follows: 0.2< | f6/f | < 0.7; the focal length of the seventh lens G7 is f7, and the relationship between the focal length f of the seventh lens and the focal length f of the optical system is as follows: 0.2< | f7/f | < 0.7.
7. A high resolution lens according to claim 1 or 2, wherein: the focal length of the eighth lens G8 is f8, and the relationship between the focal length f of the optical system and f is as follows: 1< | f8/f | < 1.5; the focal length of the ninth lens G9 is f9, and the relationship between the focal length f of the optical system and the focal length f is as follows: 2< | f9/f | < 2.5.
8. A high resolution lens according to claim 1 or 2, wherein: the distance from the front surface of the first lens G1 to the rear surface of the ninth lens G9 is s, which satisfies the relation with the focal length f of the optical system: 0.5< | s/f | <1.
9. A high resolution lens according to claim 1 or 2, wherein: the half-image height of the optical system is h, and the half-image height and the focal length f of the optical system satisfy the relation: 0.2< | h/f | < 0.5.
10. A high resolution lens according to claim 1 or 2, wherein: the high-resolution lens further includes a stop disposed between the fifth lens G5 and the sixth lens G6.
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| CN201921132640.2U CN210348042U (en) | 2019-07-18 | 2019-07-18 | High-resolution lens |
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| CN201921132640.2U CN210348042U (en) | 2019-07-18 | 2019-07-18 | High-resolution lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679400A (en) * | 2020-06-22 | 2020-09-18 | 秦皇岛视听机械研究所有限公司 | Detection lens only using three domestic optical materials and design method and application thereof |
| WO2021232922A1 (en) * | 2020-05-21 | 2021-11-25 | 广东奥普特科技股份有限公司 | Fixed-focus optical lens |
| WO2022052260A1 (en) * | 2020-09-09 | 2022-03-17 | 诚瑞光学(深圳)有限公司 | Camera optical lens |
-
2019
- 2019-07-18 CN CN201921132640.2U patent/CN210348042U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232922A1 (en) * | 2020-05-21 | 2021-11-25 | 广东奥普特科技股份有限公司 | Fixed-focus optical lens |
| CN111679400A (en) * | 2020-06-22 | 2020-09-18 | 秦皇岛视听机械研究所有限公司 | Detection lens only using three domestic optical materials and design method and application thereof |
| CN111679400B (en) * | 2020-06-22 | 2022-05-10 | 秦皇岛视听机械研究所有限公司 | Detection lens only using three domestic optical materials and design method and application thereof |
| WO2022052260A1 (en) * | 2020-09-09 | 2022-03-17 | 诚瑞光学(深圳)有限公司 | Camera optical lens |
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