CN217718231U - High-definition wide-angle fisheye optical system - Google Patents
High-definition wide-angle fisheye optical system Download PDFInfo
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- CN217718231U CN217718231U CN202121955035.2U CN202121955035U CN217718231U CN 217718231 U CN217718231 U CN 217718231U CN 202121955035 U CN202121955035 U CN 202121955035U CN 217718231 U CN217718231 U CN 217718231U
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Abstract
The application discloses wide angle fisheye optical system of high definition, including group and the lens group hou guang before the lens group that sets gradually along light incidence direction, be provided with the diaphragm between group and the lens group hou guang before the lens group, group is including the first lens, second lens and the third lens that set gradually along light incidence direction before the lens group, first lens, second lens and third lens are meniscus lens, two concave lens and two convex lens respectively, group is including fourth lens, fifth lens and the sixth lens that set gradually along light incidence direction after the lens group, fourth lens, fifth lens and sixth lens are biconvex lens, meniscus lens and two convex lens respectively. The high-definition wide-angle fisheye optical system has high-definition pixels, and the phase surface can reach 1/1.7'; the system can be widely applied to the fields of Internet of things security, intelligent home, mobile detection and the like.
Description
Technical Field
The application relates to the technical field of optical systems, in particular to a high-definition wide-angle fisheye optical system.
Background
Aiming at the problems that the existing security market and products are increasingly developed and precise, the requirements on the coverage range are wider and wider, and the coverage range is larger and larger, in order to simultaneously meet the requirements on the two aspects, the large-phase fisheye optical system is specially provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high definition wide-angle fisheye optical system to overcome not enough among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a wide angle fisheye optical system of high definition, includes group and the back group of lens group before the lens group that sets gradually along light incidence direction, be provided with the diaphragm between group and the back group of lens group before the lens group, group is including the first lens, second lens and the third lens that set gradually along light incidence direction before the lens group, first lens, second lens and third lens are meniscus lens, biconcave lens and biconvex lens respectively, group is including fourth lens, fifth lens and the sixth lens that set gradually along light incidence direction after the lens group, fourth lens, fifth lens and sixth lens are biconvex lens, meniscus lens and biconvex lens respectively.
Preferably, the fourth lens and the fifth lens are combined into a cemented lens group.
Preferably, the focal length of the lens of the optical system satisfies:
f1＞0；
f2＞0；
f3＜0；
f4＞0；
f5＞0；
f6＞0；
wherein: f1 is the focal length of the first lens; f2 is the focal length of the second lens; f3 is the focal length of the third lens; f4 is the focal length of the fourth mirror; f5 is the focal length of the fifth lens; f6 is the focal length of the sixth lens.
Preferably, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens satisfy:
a first lens: r1 is more than or equal to 25 and less than or equal to 30, R2 is more than or equal to 3.5 and less than or equal to 5.5, D is more than or equal to 1.0 and less than or equal to 2.5
A second lens: r1 is more than or equal to-15 and less than or equal to-13, R2 is more than or equal to 3.5 and less than or equal to 4.5, D is more than or equal to 1.5 and less than or equal to 2.7
A third lens: r1 is more than or equal to 7 and less than or equal to 9.5, R2 is more than or equal to 35 and less than or equal to-25, D is more than or equal to 1.3 and less than or equal to 2.1
A fourth lens: r1 is more than or equal to 17 and less than or equal to 21, R2 is more than or equal to 3 and less than or equal to-2, D is more than or equal to 1.3 and less than or equal to 1.8
A fifth lens: r1 is more than or equal to-3.0 and less than or equal to-2.5, R2 is more than or equal to-7 and less than or equal to-5.6, D is more than or equal to 0.8 and less than or equal to 1.2
A sixth lens: r1 is more than or equal to 14 and less than or equal to-16, R2 is more than or equal to 16 and less than or equal to-14, D is more than or equal to 1.2 and less than or equal to 1.5
Wherein R1 and R2 are curvature radius values of two surfaces of the lens, and D is a central thickness value of the lens.
Preferably, the optical parameters of the optical system satisfy:
2.0mm＜f＜2.2mm；
TTL＜30mm；
ImageSize：1/1.7”
F#＝1.8～2.0。
compared with the prior art, the high-definition wide-angle fisheye optical system has high-definition pixels, and the phase surface can reach 1/1.7"; the system can be widely applied to the fields of Internet of things security, intelligent home, mobile detection and the like.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a high-definition wide-angle fisheye optical system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a point array of a high-definition wide-angle fisheye optical system according to an embodiment of the present invention;
fig. 3 is a schematic view of curvature of field and distortion of a high-definition wide-angle fisheye optical system according to an embodiment of the present invention;
fig. 4 is an optical aberration diagram of a high-definition wide-angle fisheye optical system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Combine shown in fig. 1, a wide angle fisheye optical system of high definition, including group and the lens group after-group before the lens group that sets gradually along light incidence direction, be provided with the diaphragm between group and the lens group after-group before the lens group, group is including the first lens G1, second lens G2 and the third lens G3 that set gradually along light incidence direction before the lens group, first lens G1, second lens G2 and third lens G3 are meniscus lens, biconcave lens and biconvex lens respectively, the lens group after-group is including fourth lens G4, fifth lens G5 and the sixth lens G6 that set gradually along light incidence direction, fourth lens G4, fifth lens G5 and sixth lens G6 are biconvex lens, meniscus lens and biconvex lens respectively.
Preferably, the fourth lens G4 and the fifth lens G5 are cemented into a cemented lens group.
Preferably, the focal length of the lens of the optical system satisfies:
f1＞0；
f2＞0；
f3＜0；
f4＞0；
f5＞0；
f6＞0；
wherein: f1 is the focal length of the first lens G1; f2 is the focal length of the second lens G2; f3 is the focal length of the third lens G3; f4 is the focal length of the fourth mirror G4; f5 is the focal length of the fifth lens G5; f6 is the focal length of the sixth lens G6.
Preferably, the first lens G1, the second lens G2, the third lens G3, the fourth lens G4, the fifth lens G5, and the sixth lens G6 satisfy:
first lens G1: r1 is more than or equal to 25 and less than or equal to 30, R2 is more than or equal to 3.5 and less than or equal to 5.5, D is more than or equal to 1.0 and less than or equal to 2.5
Second lens G2: r1 is more than or equal to-15 and less than or equal to-13, R2 is more than or equal to 3.5 and less than or equal to 4.5, D is more than or equal to 1.5 and less than or equal to 2.7
Third lens G3: r1 is more than or equal to 7 and less than or equal to 9.5, R2 is more than or equal to 35 and less than or equal to-25, D is more than or equal to 1.3 and less than or equal to 2.1
Fourth lens G4: r1 is more than or equal to 17 and less than or equal to 21, R2 is more than or equal to 3 and less than or equal to-2, D is more than or equal to 1.3 and less than or equal to 1.8
Fifth lens G5: r1 is more than or equal to-3.0 and less than or equal to-2.5, R2 is more than or equal to-7 and less than or equal to-5.6, D is more than or equal to 0.8 and less than or equal to 1.2
Sixth lens G6: r1 is more than or equal to 14 and less than or equal to-16, R2 is more than or equal to 16 and less than or equal to-14, D is more than or equal to 1.2 and less than or equal to 1.5
Wherein R1 and R2 are curvature radius values of two surfaces of the lens, and D is a central thickness value of the lens.
The application discloses wide-angle fisheye optical system's of high definition optical parameter: f is more than 2.0mm and less than 2.2mm;
TTL＜30mm；Image Size：1/1.7”F#＝1.8～2.0。
fig. 2 is a schematic point array diagram of a high-definition wide-angle fisheye optical system according to an embodiment of the present invention; fig. 3 is a schematic view illustrating curvature of field and distortion of a high-definition wide-angle fisheye optical system according to an embodiment of the present invention; fig. 4 is an optical aberration diagram of a high-definition wide-angle fisheye optical system according to an embodiment of the present invention.
Compared with the prior art, the high-definition wide-angle fisheye optical system has high-definition pixels, and the phase surface can reach 1/1.7"; the system can be widely applied to the fields of Internet of things security, intelligent home, mobile detection and the like.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
The foregoing is merely a detailed description of the present application, and it should be noted that modifications and embellishments could be made by those skilled in the art without departing from the principle of the present application, and these should also be considered as the protection scope of the present application.
Claims (5)
1. The utility model provides a high definition wide-angle fisheye optical system which characterized in that: including group and the lens group hou qu before the lens group that sets gradually along light incidence direction, be provided with the diaphragm between group and the lens group hou qu before the lens group, group is including the first lens, second lens and the third lens that set gradually along light incidence direction before the lens group, first lens, second lens and third lens are meniscus lens, two spill lens and two convex lens respectively, group is including fourth lens, fifth lens and the sixth lens that set gradually along light incidence direction after the lens group, fourth lens, fifth lens and sixth lens are biconvex lens, meniscus lens and two convex lens respectively.
2. The high-definition wide-angle fisheye optical system of claim 1, characterized in that: and the fourth lens and the fifth lens are combined into a cemented lens group.
3. The high-definition wide-angle fisheye optical system of claim 1, characterized in that: the focal length of the lens of the optical system satisfies:
f1＞0；
f2＞0；
f3＜0；
f4＞0；
f5＞0；
f6＞0；
wherein: f1 is the focal length of the first lens; f2 is the focal length of the second lens; f3 is the focal length of the third lens; f4 is the focal length of the fourth mirror; f5 is the focal length of the fifth lens; f6 is the focal length of the sixth lens.
4. The high-definition wide-angle fisheye optical system of claim 1, characterized in that: the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens satisfy:
a first lens: r1 is more than or equal to 25 and less than or equal to 30, R2 is more than or equal to 3.5 and less than or equal to 5.5, D is more than or equal to 1.0 and less than or equal to 2.5
A second lens: r1 is more than or equal to-15 and less than or equal to-13, R2 is more than or equal to 3.5 and less than or equal to 4.5, D is more than or equal to 1.5 and less than or equal to 2.7
A third lens: r1 is more than or equal to 7 and less than or equal to 9.5, R2 is more than or equal to 35 and less than or equal to-25, D is more than or equal to 1.3 and less than or equal to 2.1
A fourth lens: r1 is more than or equal to 17 and less than or equal to 21, R2 is more than or equal to 3 and less than or equal to-2, D is more than or equal to 1.3 and less than or equal to 1.8
A fifth lens: r1 is more than or equal to-3.0 and less than or equal to-2.5, R2 is more than or equal to-7 and less than or equal to-5.6, D is more than or equal to 0.8 and less than or equal to 1.2
A sixth lens: r1 is more than or equal to 14 and less than or equal to-16, R2 is more than or equal to 16 and less than or equal to-14, D is more than or equal to 1.2 and less than or equal to 1.5
Wherein R1 and R2 are curvature radius values of two surfaces of the lens, and D is a central thickness value of the lens.
5. The high-definition wide-angle fisheye optical system of claim 1, characterized in that: the optical parameters of the optical system satisfy:
2.0mm＜f＜2.2mm；
TTL＜30mm；
Image Size：1/1.7”
F#＝1.8～2.0
wherein: f is the effective focal length, F # is the aperture, and Image Size is the imaging target surface; TTL is total optical length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121955035.2U CN217718231U (en) | 2021-08-19 | 2021-08-19 | High-definition wide-angle fisheye optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121955035.2U CN217718231U (en) | 2021-08-19 | 2021-08-19 | High-definition wide-angle fisheye optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217718231U true CN217718231U (en) | 2022-11-01 |
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ID=83773796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121955035.2U Active CN217718231U (en) | 2021-08-19 | 2021-08-19 | High-definition wide-angle fisheye optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217718231U (en) |
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2021
- 2021-08-19 CN CN202121955035.2U patent/CN217718231U/en active Active
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