CN114815178B - High-resolution wide-angle optical lens and optical equipment - Google Patents
High-resolution wide-angle optical lens and optical equipmentInfo
- Publication number
- CN114815178B CN114815178B CN202210508507.2A CN202210508507A CN114815178B CN 114815178 B CN114815178 B CN 114815178B CN 202210508507 A CN202210508507 A CN 202210508507A CN 114815178 B CN114815178 B CN 114815178B
- Authority
- CN
- China
- Prior art keywords
- lens
- focal length
- lens group
- optical
- optical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The embodiment of the application discloses a high-resolution wide-angle optical lens and optical equipment, wherein the optical lens comprises an optical system, the optical system comprises a first lens group, a second lens group, a diaphragm and a third lens group, the first lens group comprises a first sub-lens group with a first lens, a second lens and a third lens and a second sub-lens group with a fourth lens, a fifth lens and a sixth lens, the second lens group comprises a seventh lens and an eighth lens, the third lens group comprises a ninth lens, a tenth lens, an eleventh lens, a twelfth lens and a thirteenth lens, the focal length of the optical system is f, and the lens groups meet the relation of 7.00< |f S1/f|<8.60,4.80<|fS2/f|<6.00,8.50<|fS3/f| <10.00. Based on the structure, the optical lens has higher resolution, smaller optical distortion and large target surface wide-angle optical lens.
Description
Technical Field
The present application relates to the field of optical imaging technology, and in particular, to a high-resolution wide-angle optical lens and an optical device including the same.
Background
With the deployment of China manufacturing 2025, the application of machine vision is more and more extensive and gradually developed towards high precision and high resolution, especially in the field of large-field detection, such as large-size measurement, PCB defect detection, floor tile surface texture, color detection and the like, but wide-angle optical lenses corresponding to the large-field detection of machine vision in the market today are relatively rare. In addition, with the development of industrial technology, the requirements of modern industrial large-field detection on detection precision are relatively high, so that the requirements on fields of view, resolution and the like of an optical lens are gradually improved.
At the same time, the camera chip is gradually becoming larger, and the 1.1' imaging chip is gradually becoming one of the mainstream chips, such as IMX531 and IMX541 of SONY, and the like. However, the wide-angle optical lens for a 1.1' imaging chip in the field of view is quite rare, and particularly the wide-angle optical lens with high resolution and large target surface is quite rare, and the existing lens is unsatisfactory in terms of distortion, resolution and lens size. Therefore, designing an optical lens with high resolution, wide angle, and low optical distortion is an urgent need for those skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the application provides a high-resolution wide-angle optical lens which has higher resolution, lower optical distortion and is a large target surface wide-angle optical lens.
In order to solve the problems, the embodiment of the application provides the following technical scheme:
The high-resolution wide-angle optical lens comprises an optical system, wherein the optical system is sequentially provided with a first lens group (S1) with positive focal power, a second lens group (S2) with positive focal power, a diaphragm and a third lens group (S3) with positive focal power from an object side to an image side, the aperture of the diaphragm is a round hole, and the adjusting range of the aperture of the diaphragm is F2.8-F16, and the optical system comprises end point values;
The first lens group (S1) comprises a first sub-lens group (T1) with negative focal power and a second sub-lens group (T2) with positive focal power, which are sequentially arranged, wherein the first sub-lens group (T1) comprises a first lens (G1) with positive focal power in a meniscus structure, a second lens (G2) with negative focal power in a meniscus structure and a third lens (G3) with negative focal power in a meniscus structure, the second sub-lens group (T2) comprises a fourth lens (G4) with positive focal power in a meniscus structure, a fifth lens (G5) with negative focal power in a meniscus structure and a sixth lens (G6) with positive focal power in a sequential arrangement, and the fourth lens (G4) and the fifth lens (G5) are glued into a first gluing lens group (U1) with positive focal power;
The second lens group (S2) comprises a seventh lens (G7) with positive focal power in a biconvex structure and an eighth lens (G8) with negative focal power in a biconcave structure, which are sequentially arranged, wherein the seventh lens (G7) and the eighth lens (G8) are glued to form a second glued lens group (U2) with positive focal power;
The third lens group (S3) includes a ninth lens (G9) having positive optical power in a biconvex structure, a tenth lens (G10) having negative optical power in a meniscus structure, an eleventh lens (G11) having negative optical power in a biconcave structure, a twelfth lens (G12) having positive optical power in a biconvex structure, and a thirteenth lens (G13) having positive optical power in a biconvex structure, wherein the ninth lens (G9) and the tenth lens (G10) are cemented into a third cemented lens group (U3) having positive optical power, and the eleventh lens (G11) and the twelfth lens (G12) are cemented into a fourth cemented lens group (U4) having negative optical power;
The focal length of the optical system is f, the focal length of the first lens group (S1) is f (S1), the relation of 7.00< |f (S1)/f| <8.60 is met, the focal length of the second lens group (S2) is f (S2), the relation of 4.80< |f (S2)/f| <6.00 is met, the relation of I BFL/f| <1.95 is met by the optical back intercept BFL of the optical system and the focal length f of the optical system, and the relation of I y '/f| <1.30 is met by the half image height y' of the optical system and the focal length f of the optical system.
Optionally, the focal length f of the first lens (G1) is f (G1), the focal length f (G1) of the first lens (G1) and the focal length f of the optical system meet the relation of 11.00< |f (G1)/f| <13.00, the focal length f of the second lens (G2) is f (G2), the focal length f (G2) of the second lens (G2) and the focal length f of the optical system meet the relation of 3.50< |f (G2)/f| <5.00, the focal length f of the third lens (G3) is f (G3), and the focal length f (G3) of the third lens (G3) and the focal length f of the optical system meet the relation of 1.50< |f (G3)/f| < 2.80.
The focal length of the first sub-lens group (T1) is f (T1), and the focal length f (T1) of the first sub-lens group and the focal length f of the optical system meet the relation of 1.20< |f (T1)/f| <2.20.
Optionally, the focal length of the first cemented lens group (U1) is f (U1), the focal length f (U1) of the first cemented lens group (U1) and the focal length f of the optical system satisfy the relation of 15.80< |f (U1)/f| <17.00, the focal length of the sixth lens (G6) is f (G6), and the focal length f (G6) of the sixth lens (G6) and the focal length f of the optical system satisfy the relation of 5.20< |f (G6)/f| <6.10.
Optionally, the focal length of the third cemented lens group (U3) is f (U3), the focal length f (U3) of the third cemented lens group (U3) and the focal length f of the optical system satisfy the relation of 3.50< |f (U3)/f| <4.60, the focal length of the fourth cemented lens group (U4) is f (U4), the focal length f (U4) of the fourth cemented lens group (U4) and the focal length f of the optical system satisfy the relation of 2.50< |f (U4)/f| <3.50, the focal length of the thirteenth lens (G13) is f (G13), and the focal length f (G13) of the thirteenth lens (G13) and the focal length f of the optical system satisfy the relation of 2.00< |f (G13)/f| <3.00.
Optionally, each lens in the optical system is a spherical lens.
The embodiment of the application also provides optical equipment, which comprises the optical lens in any embodiment.
Compared with the prior art, the technical scheme has the following advantages:
The optical lens of the technical scheme provided by the application comprises an optical system, wherein the optical system consists of a first lens group S1, a second lens group S2, a diaphragm and a third lens group S3 which are sequentially arranged along the object side to the image side; the first lens group S1 comprises a first sub-lens group T1 and a second sub-lens group T2, the first sub-lens group T1 comprises a first lens G1, a second lens G2 and a third lens G3, the second sub-lens group T2 comprises a fourth lens G4, a fifth lens G5 and a sixth lens G6 which are sequentially arranged, and the fourth lens G4 and the fifth lens G5 are glued to form a first glued lens group U1; the second lens group S2 comprises a seventh lens G7 and an eighth lens G8 which are sequentially arranged, wherein the seventh lens G7 and the eighth lens G8 are glued to form a second glued lens group U2, the third lens group S3 comprises a ninth lens G9, a tenth lens G10, an eleventh lens G11, a twelfth lens G12 and a thirteenth lens G13 which are sequentially arranged, the ninth lens G9 and the tenth lens G10 are glued to form a third glued lens group U3, the eleventh lens G11 and the twelfth lens G12 are glued to form a fourth glued lens group U4, the focal length of the optical system is f, the focal length of the first lens group S1 is f S1, the focal length of the second lens group S2 is f S2, and the focal length of the second lens group S2 is f S1/f| <8.60, and the focal length of the fourth lens group is f S2, and the focal length of the fourth lens group is f S2/f| <6.00 is 7.00. Based on the structure, the focal length f of the optical system is 8mm, the maximum imaging plane phi is 17.6mm, and the optical lens is a wide-angle optical lens with a large target surface. Meanwhile, based on the structure, the highest resolution of the optical system can reach 208lp/mm, the resolution is higher, the optical system can be matched with a 2.4 mu m pixel chip, and when the optical system corresponds to a 1.1'' chip with a larger size, the pixel can reach twenty-five million pixels, so that the optical system can be suitable for a large-size imaging chip. In addition, based on the above structure, the optical distortion of the optical system is lower than 2.0%, and the optical distortion is small. Therefore, the optical lens provided by the embodiment of the application has higher resolution and smaller optical distortion, is a wide-angle optical lens with a large target surface, is also suitable for a large-size imaging chip, and has wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a high-resolution wide-angle optical lens according to an embodiment of the present application;
fig. 2 is an optical distortion curve of a high-resolution wide-angle optical lens according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
In the following detailed description of the embodiments of the present application, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration only, and in which is shown by way of illustration only, and in which the scope of the application is not limited for ease of illustration. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
As described in the background section, it is more urgent to design an optical lens with high resolution, wide angle and low optical distortion, and it is important for those skilled in the art to study.
Based on the above-described study, an embodiment of the present application provides a high-resolution wide-angle optical lens including an optical system composed of a first lens group S1 having positive power, a second lens group S2 having positive power, a Stop (Stop), and a third lens group S3 having positive power, which are sequentially disposed from an object side to an Image side (Image), as shown in fig. 1.
The first lens group S1 comprises a first sub-lens group T1 with negative focal power and a second sub-lens group T2 with positive focal power, wherein the first sub-lens group T1 comprises a first lens G1 with positive focal power and in a meniscus structure, a second lens G2 with negative focal power and in a meniscus structure and a third lens G3 with negative focal power and in a meniscus structure, the second sub-lens group T1 comprises a fourth lens G4 with positive focal power and in a meniscus structure, a fifth lens G5 with negative focal power and in a meniscus structure and a sixth lens G6 with positive focal power and in a meniscus structure, and the fourth lens G4 and the fifth lens G5 are glued to form a first gluing lens group U1 with positive focal power. The first lens G1, the second lens G2, and the third lens G3 in the first sub-lens group T1 are sequentially disposed from the object side to the image side, and the fourth lens G4, the fifth lens G5, and the sixth lens G6 in the second sub-lens group T2 are sequentially disposed from the object side to the image side.
The second lens group S2 includes a seventh lens G7 with positive focal power and having a biconvex structure, and an eighth lens G8 with negative focal power and having a biconcave structure, which are sequentially arranged, wherein the seventh lens G7 and the eighth lens G8 are glued to form a second glued lens group U2 with positive focal power; the seventh lens G7 and the eighth lens G8 in the second lens group S2 are disposed in this order from the object side to the image side.
The third lens group S3 includes a ninth lens G9 having positive power and having a biconvex structure, a tenth lens G10 having negative power and having a meniscus structure, an eleventh lens G11 having negative power and having a biconcave structure, a twelfth lens G12 having positive power and having a biconvex structure, and a thirteenth lens G13 having positive power and having a biconvex structure, which are sequentially disposed, wherein the ninth lens G9, the tenth lens G10 are cemented into a third cemented lens group U3 having positive power, the eleventh lens G11 and the twelfth lens G12 are cemented into a fourth cemented lens group U4 having negative power, and it is noted that the ninth lens G9, the tenth lens G10, the eleventh lens G11, the twelfth lens G12, and the thirteenth lens G13 in the third lens group S3 are sequentially disposed along an object side to an image side.
The focal length of the optical system is f, the focal length of the first lens group S1 is f S1, the focal length f S1 of the first lens group S1 and the focal length f of the optical system satisfy the relation of 7.00< |f S1/f| <8.60, that is, the absolute value of the ratio of the focal length f S1 of the first lens group S1 to the focal length f of the optical system is 7.00-8.60, the end point value is not included, the focal length of the second lens group S2 is f S2, the focal length f S2 of the second lens group and the focal length f of the optical system satisfy the relation of 4.80< |f S2/f| <6.00, that is, the absolute value of the ratio of the focal length f S2 of the second lens group S2 and the focal length f of the optical system is 4.80-6.00, and the end point value is not included. It should be noted that, the second lens group S2 includes a seventh lens G7 and an eighth lens G8, and the seventh lens G7 and the eighth lens G8 form a second cemented lens group U2, so that the focal length of the second lens group S2 is the focal length of the second cemented lens group, and the focal length is equal to the focal length of the second cemented lens group.
Based on the above embodiments, in one embodiment of the present application, the relation between the optical back intercept BFL of the optical system and the focal length f of the optical system is satisfied by i BFL/f <1.95, that is, the absolute value of the ratio of the optical back intercept BFL of the optical system to the focal length f of the optical system ranges from 0 to 1.95, excluding the end point value. It should be noted that, for the optical system, the optical back intercept (Back Focal Length, abbreviated as BFL) of the optical system is the distance from the last surface to the image plane in the optical system, so for the optical lens provided by the embodiment of the present application, the relationship |bfl/f| <1.95 is satisfied by the focal length f of the optical system, the range of the absolute value of the ratio of the distance from the last surface to the image plane of the optical system to the focal length f of the optical system is 0 to 1.95, and the range does not include an endpoint value, that is, the relationship |bfl/f| <1.95 is satisfied by the focal length f of the optical system, that is, the range of the absolute value of the ratio of the distance from the mirror surface of the thirteenth lens G13 near the object side to the image plane in the optical system to the focal length f of the optical system is 0 to 1.95, and the range of the absolute value of the focal length f of the optical system does not include an endpoint value.
Based on the above embodiments, in one embodiment of the present application, the relationship of y 'and f is satisfied, that is, the absolute value of the ratio of y' and f is in the range of 0 to 1.30, excluding the end point value. In the optical system, the half image height of the optical system is generally equal to the image height imaged by the optical system, so that the relation between the half image height y 'of the optical system and the focal length f of the optical system of the optical lens provided by the embodiment of the application is satisfied, i.e. y'/f| <1.30, and the absolute value range of the ratio of half the image height imaged by the optical system to the focal length f of the optical system is 0-1.30, excluding the end point value.
Based on the above embodiments, in one embodiment of the present application, the focal length of the first lens G1 in the first sub-lens group T1 is f G1, and the focal length f G1 of the first lens G1 and the focal length f of the optical system satisfy the relation of 11.00< |f G1/f| <13.00, that is, the absolute value of the ratio of the focal length f G1 of the first lens G1 in the first sub-lens group S1 to the focal length f of the optical system ranges from 11.00 to 13.00, excluding the end point value; the focal length f G2 of the second lens G2 in the first sub-lens group T1 and the focal length f of the optical system satisfy the relation of 3.50< |f G2/f| <5.00, that is, the absolute value of the ratio of the focal length f G2 of the second lens G2 in the first sub-lens group T1 and the focal length f of the optical system is in the range of 3.50-5.00, the focal length f G3 of the third lens G3 in the first sub-lens group T1 and the focal length f of the third lens G3 satisfy the relation of 1.50< |f G3/f| <2.80, that is, the absolute value of the ratio of the focal length f G3 of the third lens G3 in the first sub-lens group T1 and the focal length f of the optical system is in the range of 1.50-5.00, and the focal length f of the optical system is in the range of 1.50-2.80, and the focal length f of the third lens G3 is not in the range of 1.50-5.80.
In the embodiment of the present application, the focal length f T1 of the first sub-lens group T1 and the focal length f of the optical system satisfy the relation of 1.20< |f T1/f| <2.20, that is, the absolute value of the ratio of the focal length f T1 of the first sub-lens group T1 and the focal length f of the optical system ranges from 1.20 to 2.20, excluding the end point value.
Based on the above embodiments, in one embodiment of the present application, the focal length of the first cemented lens group U1 in the second sub-lens group T2 is f U1, and the focal length f U1 of the first cemented lens group U1 and the focal length f of the optical system satisfy the relation of 15.80< |f U1/f| <17.00, that is, the absolute value of the ratio of the focal length f U1 of the first cemented lens group U1 to the focal length f of the optical system ranges from 15.80 to 17.00, excluding the end point value. The first cemented lens group U1 is known as a cemented lens group formed by the fourth lens G4 and the fifth lens G5, the absolute value of the ratio of the focal length f U1 of the first cemented lens group U1 to the focal length f of the optical system ranges from 15.80 to 17.00, and the range of the absolute value of the ratio of the focal length f of the fourth lens G4 and the fifth lens G5 to the focal length f of the optical system is 15.80 to 17.00, excluding the end point value. The focal length f G6 of the sixth lens G6 in the second sub-lens group T1 and the focal length f G6 of the sixth lens G6 satisfy the relation of 5.20< |f G6/f| <6.10, that is, the absolute value of the ratio of the focal length f G6 of the sixth lens G6 in the second sub-lens group T2 and the focal length f of the optical system is 5.20-6.10, which includes the end point value.
On the basis of the above embodiment, in one embodiment of the present application, the focal length f U3 of the third cemented lens group U3 in the third lens group S3 is f U3, and therefore, the focal length f U3 of the third cemented lens group U3 and the focal length f of the optical system satisfy the relation of 3.50< |f U3/f| <4.60, that is, the absolute value of the ratio of the focal length f U3 of the third cemented lens group U3 to the focal length f of the optical system in the third lens group S3 is in the range of 3.50-4.60, excluding the end point value, and it is known that the third cemented lens group U3 is formed by the ninth lens G9 and the tenth lens G10, and that the focal length f U3 of the third cemented lens group U3 and the focal length f of the optical system satisfy the relation of 3.50< |f U3/f| <4.60 also means that the absolute value of the ratio of the focal length f U3 of the third cemented lens group U3 and the focal length f of the optical system in the third lens group S3 is not in the range of 3.50-4.60, excluding the end point value of the focal length f of the ninth lens group G9 and the tenth lens G10.
The focal length of the fourth cemented lens group U4 in the third lens group S3 is f U4, the focal length f U4 of the fourth cemented lens group U4 and the focal length f of the optical system satisfy the relation of 2.50< |f U4/f| <3.50, that is, the absolute value of the ratio of the focal length f U4 of the fourth cemented lens group U4 in the third lens group S3 to the focal length f of the optical system is in the range of 2.50-3.50, the absolute value of the focal length f of the fourth cemented lens group U4 in the third lens group S3 is not included, the focal length f U4 of the fourth cemented lens group U4 and the focal length f of the optical system satisfy the relation of 2.50|f U4/f| <3.50 also means that the absolute value of the focal length f of the fourth cemented lens group U4 in the third lens group S3 is not included in the range of 2.50.
The focal length of the thirteenth lens G13 in the third lens group S3 is f G13, the focal length f G13 of the thirteenth lens G13 and the focal length f of the optical system satisfy the relation of 2.00< |f G13/f| <3.00, that is, the absolute value of the ratio of the focal length f G13 of the thirteenth lens G13 and the focal length f of the optical system in the third lens group S3 ranges from 2.00 to 3.00, and no endpoint value is included.
On the basis of any one of the above embodiments, in one embodiment of the present application, the aperture of the diaphragm in the optical system is a circular hole, and the adjusting range of the aperture of the diaphragm is F2.8-F16, including the end point value, so that the adjusting range of the aperture of the diaphragm of the optical system is larger, and thus the aperture of the diaphragm in the optical system can be flexibly adjusted.
In one embodiment of the present application, each lens in the optical system is a spherical lens, that is, 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, the ninth lens G9, the tenth lens G10, the eleventh lens G11, the twelfth lens G12, and the thirteenth lens G13 in the optical system are all spherical lenses, but the embodiment of the present application is not limited thereto, and is specifically defined as the case may be.
Based on the above embodiments, in one specific embodiment of the present application, the data of each lens of the optical system and each cemented lens group in the optical lens are shown in the following table:
| Surface of the body | Radius (mm) | Thickness (mm) | Refractive index |
| G1 front surface | 46.4 | 10.1 | 1.8 |
| G1 rear surface | 95.6 | 0.1 | |
| G2 front surface | 26.8 | 2 | 1.8 |
| G2 rear surface | 13.1 | 7.6 | |
| G3 front surface | 107.8 | 1.5 | 2.0 |
| G3 rear surface | 15.1 | 5.8 | |
| U1 front surface | -48.1 | 13 | 2.0 |
| U1 bonding surface | -13.3 | 12.7 | 1.9 |
| U1 back surface | -53.0 | 0.1 | |
| G6 front surface | 29.5 | 2.6 | 1.9 |
| G6 rear surface | 95.0 | 7.9 | |
| U2 front surface | 13.9 | 2.6 | 1.9 |
| U2 glued surface | -57.9 | 1.5 | 1.6 |
| U2 back surface | 10.7 | 1.5 | |
| Diaphragm | Plane surface | 2.5 | |
| U3 front surface | 54.5 | 2.8 | 1.7 |
| U3 glued surface | -7.5 | 1.5 | 2.0 |
| U3 rear surface | -20.4 | 0.3 | |
| U4 front surface | -13.5 | 1.5 | 1.9 |
| U4 bonding surface | 16.7 | 3.7 | 1.6 |
| U4 rear surface | -16.7 | 2.3 | |
| G13 front surface | 49.7 | 3.6 | 1.9 |
| G13 rear surface | -28.5 | 11.3 | |
| Image plane | Plane surface |
In the above data table, the front surfaces of the lenses and the cemented lens groups are mirror surfaces of the lenses and the cemented lens groups near the object side, that is, the front surfaces of the lenses and the cemented lens groups are mirror surfaces of the lenses and the cemented lens groups near the object plane, and the rear surfaces of the lenses and the cemented lens groups are mirror surfaces of the lenses and the cemented lens groups near the image side, that is, the rear surfaces of the lenses and the cemented lens groups are mirror surfaces of the lenses and the cemented lens groups near the image plane.
Further, it is known that the first cemented lens group U1 is formed by the fourth lens G4 and the fifth lens G5, and therefore, the front surface of the first cemented lens group U1 is the front surface of the fourth lens G4, the cemented surface of the first cemented lens group U1 is the cemented surface of the fourth lens G4 cemented with the front surface of the fifth lens G5, and the rear surface of the first cemented lens group U1 is the rear surface of the fifth lens G5. The second cemented lens group U2 is formed by the seventh lens G7 and the eighth lens G8, so that the front surface of the second cemented lens group U2 is the front surface of the seventh lens G7, the cemented surface of the second cemented lens group U2 is the cemented surface of the rear surface of the seventh lens G7 cemented with the front surface of the eighth lens G8, and the rear surface of the second cemented lens group U2 is the rear surface of the eighth lens G8. The third cemented lens group U3 is formed by the ninth lens G9 and the tenth lens G10, so that the front surface of the third cemented lens group U3 is the front surface of the ninth lens G9, the cemented surface of the third cemented lens group U3 is the cemented surface of the ninth lens G9 and the front surface of the tenth lens G10, and the rear surface of the third cemented lens group U3 is the rear surface of the tenth lens G10. The fourth cemented lens group U4 is formed by the eleventh lens G11 and the twelfth lens G12, so that the front surface of the fourth cemented lens group U4 is the front surface of the eleventh lens G11, the cemented surface of the fourth cemented lens group U4 is the cemented surface of the rear surface of the eleventh lens G11 cemented with the front surface of the twelfth lens G12, and the rear surface of the fourth cemented lens group U4 is the rear surface of the twelfth lens G12.
As can be obtained from the above data, the focal length f S1 = 62.84mm of the first lens group S1, the focal length f S2 = 43.28mm of the second lens group S2, the optical back intercept bfl=11.30 mm of the optical system, and the half image height y' =8.8 mm of the optical system. And, a focal length f T1 = -13.59mm of the first sub-lens group T1 in the first lens group S1, a focal length f G1 =98.50 mm of the first lens G1 of the first sub-lens group T1, a focal length f G2 = -33.00mm of the second lens G2 of the first sub-lens group T1, a focal length f G3 = -17.60mm of the third lens G3 of the first sub-lens group T1, a focal length f U1 = 131.18mm of the first cemented lens group U1 in the second sub-lens group T2, a focal length f U3 =32.82 mm of the third cemented lens group U3 in the third lens group S3, and a focal length f U4 = -24.00mm of the fourth cemented lens group U4 in the third lens group S3. According to the focal length of each lens group and the focal length of each lens in each lens group and each cemented lens group, ,|fS1/f|=7.86,|fS2/f|=5.41,| BFL/f |=1.41,| y'/f |=1.10;|fT1/ f|=1.70,|fG1/ f|=12.31,|fG2/ f|=4.13,|fG3/ f|=2.20, |fU1/ f|=16.40,|fU3/ f|=4.10,|fU4/ f|=3.00, is within the range of the above-mentioned relation, the requirements of each relation are satisfied, and the specific embodiment meets the requirements of the optical lens provided by the embodiment of the application.
The structure of the optical system based on the specific embodiment can realize that the focal length f of the optical system is 8mm, so that the focal length of the optical system is shorter, the field of view of the optical lens is larger, and the structure of the optical system is a wide-angle optical lens, and the maximum imaging plane phi of the optical system is 17.6mm, so that the imaging plane of the optical lens is larger, and the optical lens is a large-target-surface wide-angle optical lens. Meanwhile, the highest resolution of the optical system based on the structure can reach 208lp/mm, the resolution is higher, the optical system can be matched with a 2.4 mu m pixel chip, and when the optical system corresponds to a 1.1'' chip, the pixels can reach twenty-five million pixels, so that when the optical lens provided by the embodiment of the application is applied to a large-size imaging chip, the pixels are higher, and the optical lens is suitable for the large-size imaging chip. Therefore, the optical lens provided by the embodiment of the application has the focal length of 8mm, the resolution of 208lp/mm, and can be matched with a 2.4 mu m pixel chip, and when the optical lens corresponds to a 1.1'' chip with a larger size, the pixel of the optical lens can reach twenty-five million pixels, and the optical lens can be suitable for a large-size imaging chip, so that the optical lens provided by the embodiment of the application has higher resolution, is a large-target-surface wide-angle optical lens, and is also suitable for a large-size imaging chip.
In addition, as shown in fig. 2, fig. 2 is an optical distortion curve of the optical system, and as can be seen from fig. 2, the maximum distortion of the full field of view of the optical system is lower than 2.0%, which means that the optical distortion of the optical system is smaller, and thus the optical distortion of the optical lens is smaller.
In summary, the optical lens provided by the embodiment of the application has higher resolution and smaller optical distortion, is a wide-angle optical lens with a large target surface, is also suitable for a large-size imaging chip, and has wide application prospect.
In summary, the embodiment of the application provides a high-resolution wide-angle optical lens and an optical device, the optical lens includes an optical system, the optical system is composed of a first lens group S1, a second lens group S2, a diaphragm and a third lens group S3 sequentially arranged from an object side to an image side; the first lens group S1 comprises a first sub-lens group T1 and a second sub-lens group T2, the first sub-lens group T1 comprises a first lens G1, a second lens G2 and a third lens G3, the second sub-lens group T2 comprises a fourth lens G4, a fifth lens G5 and a sixth lens G6 which are sequentially arranged, and the fourth lens G4 and the fifth lens G5 are glued to form a first glued lens group U1; the second lens group S2 comprises a seventh lens G7 and an eighth lens G8 which are sequentially arranged, wherein the seventh lens G7 and the eighth lens G8 are glued to form a second glued lens group U2, the third lens group S3 comprises a ninth lens G9, a tenth lens G10, an eleventh lens G11, a twelfth lens G12 and a thirteenth lens G13 which are sequentially arranged, the ninth lens G9 and the tenth lens G10 are glued to form a third glued lens group U3, the eleventh lens G11 and the twelfth lens G12 are glued to form a fourth glued lens group U4, the focal length of the optical system is f, the focal length of the first lens group S1 is f S1, the focal length of the second lens group S2 is f S2, and the focal length of the second lens group S2 is f S1/f| <8.60, and the focal length of the fourth lens group is f S2, and the focal length of the fourth lens group is f S2/f| <6.00 is 7.00. Based on the structure, the focal length f of the optical system is 8mm, the maximum imaging plane phi is 17.6mm, and the optical lens is a wide-angle optical lens with a large target surface. Meanwhile, based on the structure, the highest resolution of the optical system can reach 208lp/mm, the resolution is higher, the optical system can be matched with a 2.4 mu m pixel chip, the optical system can be also suitable for a large-size imaging chip, and based on the structure, the optical distortion of the optical system is lower than 2.0%, and the optical distortion is smaller. Therefore, the optical lens provided by the embodiment of the application has higher resolution and smaller optical distortion, is a wide-angle optical lens with a large target surface, is also suitable for a large-size imaging chip, and has wide application prospect.
In the description, each part is described in a parallel and progressive mode, and each part is mainly described as a difference with other parts, and all parts are identical and similar to each other.
The features described in the various embodiments of the present disclosure may be interchanged or combined with one another in the description to enable those skilled in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The high-resolution wide-angle optical lens is characterized by comprising an optical system, wherein the optical system consists of a first lens group (S1) with positive focal power, a second lens group (S2) with positive focal power, a diaphragm and a third lens group (S3) with positive focal power, which are sequentially arranged from an object side to an image side, the aperture of the diaphragm is a round hole, and the adjusting range of the aperture of the diaphragm is F2.8-F16, and the end point value is included;
The first lens group (S1) comprises a first sub-lens group (T1) with negative focal power and a second sub-lens group (T2) with positive focal power, which are sequentially arranged, wherein the first sub-lens group (T1) comprises a first lens (G1) with positive focal power in a meniscus structure, a second lens (G2) with negative focal power in a meniscus structure and a third lens (G3) with negative focal power in a meniscus structure, the second sub-lens group (T2) comprises a fourth lens (G4) with positive focal power in a meniscus structure, a fifth lens (G5) with negative focal power in a meniscus structure and a sixth lens (G6) with positive focal power in a sequential arrangement, and the fourth lens (G4) and the fifth lens (G5) are glued into a first gluing lens group (U1) with positive focal power;
The second lens group (S2) comprises a seventh lens (G7) with positive focal power in a biconvex structure and an eighth lens (G8) with negative focal power in a biconcave structure, which are sequentially arranged, wherein the seventh lens (G7) and the eighth lens (G8) are glued to form a second glued lens group (U2) with positive focal power;
The third lens group (S3) includes a ninth lens (G9) having positive optical power in a biconvex structure, a tenth lens (G10) having negative optical power in a meniscus structure, an eleventh lens (G11) having negative optical power in a biconcave structure, a twelfth lens (G12) having positive optical power in a biconvex structure, and a thirteenth lens (G13) having positive optical power in a biconvex structure, wherein the ninth lens (G9) and the tenth lens (G10) are cemented into a third cemented lens group (U3) having positive optical power, and the eleventh lens (G11) and the twelfth lens (G12) are cemented into a fourth cemented lens group (U4) having negative optical power;
The focal length of the optical system is f, the focal length of the first lens group (S1) is f (S1), the relation of 7.00< |f (S1)/f| <8.60 is met, the focal length of the second lens group (S2) is f (S2), the relation of 4.80< |f (S2)/f| <6.00 is met, the relation of I BFL/f| <1.95 is met by the optical back intercept BFL of the optical system and the focal length f of the optical system, and the relation of I y '/f| <1.30 is met by the half image height y' of the optical system and the focal length f of the optical system.
2. The optical lens according to claim 1, wherein a focal length of the first lens (G1) is f (G1), a focal length f (G1) of the first lens (G1) and a focal length f of the optical system satisfy a relation of 11.00< |f (G1)/f| <13.00, a focal length of the second lens (G2) is f (G2), a focal length f (G2) of the second lens (G2) and a focal length f of the optical system satisfy a relation of 3.50< |f (G2)/f| <5.00, a focal length of the third lens (G3) is f (G3), and a focal length f (G3) of the third lens (G3) and a focal length f of the optical system satisfy a relation of 1.50< |f (G3)/f| <2.80;
The focal length of the first sub-lens group (T1) is f (T1), and the focal length f (T1) of the first sub-lens group and the focal length f of the optical system meet the relation of 1.20< |f (T1)/f| <2.20.
3. The optical lens according to claim 2, wherein the focal length of the first cemented lens group (U1) is f (U1), the focal length f (U1) of the first cemented lens group (U1) and the focal length f of the optical system satisfy the relation 15.80< |f (U1)/f| <17.00, the focal length of the sixth lens (G6) is f (G6), and the focal length f (G6) of the sixth lens (G6) and the focal length f of the optical system satisfy the relation 5.20< |f (G6)/f| <6.10.
4. An optical lens according to claim 3, wherein the focal length of the third cemented lens group (U3) is f (U3), the focal length f (U3) of the third cemented lens group (U3) and the focal length f of the optical system satisfy the relation of 3.50< |f (U3)/f| <4.60, the focal length of the fourth cemented lens group (U4) is f (U4), the focal length f (U4) of the fourth cemented lens group (U4) and the focal length f of the optical system satisfy the relation of 2.50< |f (U4)/f| <3.50, the focal length of the thirteenth lens (G13) is f (G13), and the focal length f (G13) of the thirteenth lens (G13) and the focal length f of the optical system satisfy the relation of 2.00< |f (G13)/f| <3.00.
5. The optical lens of claim 1, wherein each lens in the optical system is a spherical lens.
6. An optical device comprising the optical lens of any one of claims 1-5.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210508507.2A CN114815178B (en) | 2022-05-11 | 2022-05-11 | High-resolution wide-angle optical lens and optical equipment |
| PCT/CN2022/101777 WO2023216386A1 (en) | 2022-05-11 | 2022-06-28 | High-resolution wide-angle optical lens and optical device |
| JP2023578690A JP2024521527A (en) | 2022-05-11 | 2022-06-28 | High resolution wide angle optical lenses and optical instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210508507.2A CN114815178B (en) | 2022-05-11 | 2022-05-11 | High-resolution wide-angle optical lens and optical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114815178A CN114815178A (en) | 2022-07-29 |
| CN114815178B true CN114815178B (en) | 2025-10-14 |
Family
ID=82512640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210508507.2A Active CN114815178B (en) | 2022-05-11 | 2022-05-11 | High-resolution wide-angle optical lens and optical equipment |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2024521527A (en) |
| CN (1) | CN114815178B (en) |
| WO (1) | WO2023216386A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116243461B (en) * | 2023-02-03 | 2026-01-16 | 福建浩蓝光电有限公司 | A low-distortion large-area lens for industrial line scanning |
| CN118859495B (en) * | 2024-07-29 | 2026-01-27 | 福建浩蓝光电有限公司 | Multi-object-distance inner wall detection industrial lens |
| CN119596507B (en) * | 2024-11-28 | 2026-01-06 | 江西凤凰光学科技有限公司 | A miniaturized large-target projection lens |
| CN120178475B (en) * | 2025-05-16 | 2025-09-09 | 苏州莱能士光电科技股份有限公司 | An intelligent traffic lens with large target area, large light transmission and high resolution |
| CN120161595B (en) * | 2025-05-19 | 2025-09-09 | 苏州莱能士光电科技股份有限公司 | Large-target-surface large-light-transmission high-resolution intelligent traffic lens |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149665A (en) * | 2011-12-07 | 2013-06-12 | 鸿富锦精密工业（深圳）有限公司 | Projection lens |
| CN104755982A (en) * | 2012-10-31 | 2015-07-01 | 富士胶片株式会社 | Imaging lens and imaging device |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8144401B2 (en) * | 2010-02-10 | 2012-03-27 | Young Optics Inc. | Zoom lens |
| JP6406935B2 (en) * | 2014-09-02 | 2018-10-17 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP6540052B2 (en) * | 2015-01-29 | 2019-07-10 | 株式会社シグマ | Imaging optical system |
| CN106324806B (en) * | 2015-06-17 | 2019-07-16 | 浙江大华技术股份有限公司 | A kind of optics tight shot |
| JP6541741B2 (en) * | 2016-12-27 | 2019-07-10 | キヤノン株式会社 | Image pickup optical system and image pickup apparatus having the same |
| CN106896480B (en) * | 2017-04-14 | 2022-07-15 | 成都九天光学技术有限公司 | Telecentric zoom lens of projector |
| CN207396836U (en) * | 2017-09-19 | 2018-05-22 | 浙江大华技术股份有限公司 | A kind of lens system and camera lens |
| CN208737083U (en) * | 2018-08-28 | 2019-04-12 | 舜宇光学(中山)有限公司 | Wide-angle lens |
| CN110018554B (en) * | 2019-03-15 | 2024-03-26 | 广东奥普特科技股份有限公司 | Wide-angle machine vision lens |
| CN210181286U (en) * | 2019-04-17 | 2020-03-24 | 奥普特视觉科技(苏州)有限公司 | Large-view-field machine vision lens |
| CN110058390B (en) * | 2019-04-25 | 2024-02-13 | 奥普特视觉科技(苏州)有限公司 | Low-distortion wide-angle lens |
| CN213843661U (en) * | 2020-12-28 | 2021-07-30 | 广东奥普特科技股份有限公司 | High-resolution low-distortion optical lens |
| CN112612130B (en) * | 2020-12-30 | 2025-04-11 | 广东奥普特科技股份有限公司 | A high-resolution industrial lens |
| CN213843660U (en) * | 2020-12-30 | 2021-07-30 | 广东奥普特科技股份有限公司 | High-resolution large-view-field industrial lens |
| CN112698500B (en) * | 2021-01-12 | 2025-03-07 | 广东奥普特科技股份有限公司 | High-resolution fixed-focus lenses and cameras |
-
2022
- 2022-05-11 CN CN202210508507.2A patent/CN114815178B/en active Active
- 2022-06-28 WO PCT/CN2022/101777 patent/WO2023216386A1/en not_active Ceased
- 2022-06-28 JP JP2023578690A patent/JP2024521527A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149665A (en) * | 2011-12-07 | 2013-06-12 | 鸿富锦精密工业（深圳）有限公司 | Projection lens |
| CN104755982A (en) * | 2012-10-31 | 2015-07-01 | 富士胶片株式会社 | Imaging lens and imaging device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023216386A1 (en) | 2023-11-16 |
| CN114815178A (en) | 2022-07-29 |
| JP2024521527A (en) | 2024-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114815178B (en) | High-resolution wide-angle optical lens and optical equipment | |
| CN111522126B (en) | A fixed-focus optical lens | |
| CN111399187B (en) | High-pixel low-distortion optical lens | |
| CN109683282B (en) | A Low Distortion Wide Angle Fixed Focus Line Scan Machine Vision Lens Optical System | |
| CN110018554B (en) | Wide-angle machine vision lens | |
| CN108594401B (en) | Large target surface fixed focus machine vision linear array lens | |
| CN111399198B (en) | A bi-telecentric lens | |
| CN212302042U (en) | A wide field of view optical lens | |
| CN114047610A (en) | Optical system and high-resolution close-range imaging long-focus industrial lens | |
| CN209911632U (en) | Optical imaging system | |
| CN110346918B (en) | Low-distortion line scanning lens | |
| CN109884779B (en) | Low-distortion lens | |
| CN109884773B (en) | Lens with low distortion and large target surface | |
| CN112698500B (en) | High-resolution fixed-focus lenses and cameras | |
| CN110058390B (en) | Low-distortion wide-angle lens | |
| CN114706198B (en) | High-resolution large-view-field optical lens and optical equipment | |
| CN213276098U (en) | Low-distortion optical lens | |
| CN211857040U (en) | A high-pixel low-distortion optical lens | |
| CN111190272B (en) | A high-resolution, large-aperture lens | |
| CN109100856B (en) | High-resolution large-target-surface-magnification-adjustable line-scanning machine vision lens | |
| CN209311770U (en) | A macro fixed-focus line-scanning machine vision lens with high resolution and large field of view | |
| CN218181198U (en) | High-resolution wide-angle optical lens and optical equipment | |
| CN217156917U (en) | Optical system and high-resolution close-range imaging long-focus industrial lens | |
| CN218181196U (en) | Industrial macro lens | |
| CN216310398U (en) | Object space telecentric lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |