CN218481691U

CN218481691U - Lens of single-board computer

Info

Publication number: CN218481691U
Application number: CN202222977316.9U
Authority: CN
Inventors: 李坤泓; 杨樟洪
Original assignee: Xiamen Leading Optics Co Ltd
Current assignee: Xiamen Leading Optics Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-02-14
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a veneer computer camera lens, including the plastics picture frame, install optical assembly in the picture frame, with picture frame integrated into one piece's lens mount, the lens mount is located the rear end of picture frame, optical assembly includes first lens, second lens, third lens, fourth lens, fifth lens, the sixth lens that set gradually along an optical axis in the past to the back, first lens is glass spherical lens, second lens, third lens, fifth lens, sixth lens are plastics aspherical lens, the fourth lens is glass aspherical lens. The utility model discloses single board computer camera lens simple structure, reasonable in design, plastics picture frame and lens mount adopt the integral type design, effectively guarantee the camera lens image quality, and the antidetonation is effectual simultaneously; optical assembly adopts 2G 4P's design, and the camera lens external diameter is less than 13mm, and weight is less than 2G, and the whole small of camera lens, light in weight are particularly useful for the higher scene of requirement to camera lens external diameter weight such as unmanned aerial vehicle.

Description

Lens of single-board computer

Technical Field

The utility model relates to an optical lens technical field particularly, relates to a veneer trigger camera lens.

Background

With the continuous progress of science and technology and the continuous development of society, optical imaging lenses have also been developed rapidly in recent years. Most of the existing single-board computer lenses adopt a threaded interface and are matched and fixed with a lens seat, but the threaded matching has a gap, so that the lens and the lens seat are easy to incline during installation, and simultaneously, the problems of difficult torsional matching exist, and the problems can finally influence the imaging quality of the lens; in addition, current veneer computer camera lens is bulky and weight is heavy, and the application scene is restricted, and the while is mostly the full glass design, and the cost is also higher.

In view of the above, the inventor of the present application invented a single-board camera lens.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, reasonable in design, small, light in weight, effectual veneer computer camera lens of antidetonation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a veneer computer camera lens, includes the plastics picture frame, installs optical assembly in the picture frame, with picture frame integrated into one piece's lens mount, the lens mount is located the rear end of picture frame, optical assembly includes first lens, second lens, third lens, fourth lens, fifth lens, the sixth lens that set gradually along an optical axis from the past to the back, first lens is glass spherical lens, second lens, third lens, fifth lens, sixth lens are plastics aspherical lens, the fourth lens is glass aspherical lens.

Further, the first lens to the sixth lens each include an object side surface facing the front side and allowing the imaging light to pass therethrough and an image side surface facing the rear side and allowing the imaging light to pass therethrough;

the first lens has negative diopter, and the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;

the second lens has negative diopter, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a concave surface;

the third lens has positive diopter, the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface;

the fourth lens has positive diopter, the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface;

the fifth lens has positive diopter, and the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface;

the sixth lens has negative diopter, and the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface.

Further, the image side surface of the fifth lens and the object side surface of the sixth lens are mutually glued.

Further, the internal diameter of picture frame reduces from the past to back gradually, optical component and picture frame inner wall point are glued fixedly.

Furthermore, a first space ring is arranged between the third lens and the fourth lens, and a second space ring is arranged between the fourth lens and the fifth lens.

Furthermore, both sides of the mirror frame extend outwards to form an extension part, and the extension part is provided with a fixing hole.

Further, the outer diameter of the lens is less than 13mm.

After the technical scheme is adopted, compared with the prior art, the utility model, have following advantage:

the utility model discloses single board computer camera lens simple structure, reasonable in design, plastics picture frame and lens mount adopt the integral type design, and fixed through extension and camera shell simultaneously, can effectively avoid picture frame and lens mount threaded connection to influence the imaging quality, and the while antidetonation is effectual; optical assembly adopts 2G 4P's design, and is fixed through the point with the picture frame, and the camera lens external diameter is less than 13mm, and weight is less than 2G, and the whole small of camera lens, light in weight especially is applicable to the higher scene of requirement to camera lens external diameter weight such as unmanned aerial vehicle.

Drawings

Fig. 1 is a perspective view of a single board computer lens according to an embodiment of the present invention;

fig. 2 is a schematic view of an optical assembly of a lens of a single board computer according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a lens of a single board computer according to an embodiment of the present invention.

Description of reference numerals:

11. a mirror frame; 12. a lens mount; 13. an extension portion;

21. a first lens; 22. a second lens; 23. a third lens; 24. a fourth lens; 25. a fifth lens; 26. a sixth lens; 27. a first space ring; 28. and a second space ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As used herein, the term "a lens element having a positive refractive index (or a negative refractive index)" means that the paraxial refractive index of the lens element calculated by Gaussian optics is positive (or negative). The term "object-side (or image-side) of a lens" is defined as the specific range of imaging light rays passing through the lens surface. The determination of the surface shape of the lens can be performed by the judgment method of a person skilled in the art, i.e., by the sign of the curvature radius (abbreviated as R value). The R value may be commonly used in optical design software, such as Zemax or CodeV. The R value is also commonly found in lens data sheets (lens data sheets) of optical design software. When the R value is positive, the object side is judged to be a convex surface; and when the R value is negative, judging that the object side surface is a concave surface. On the contrary, regarding the image side surface, when the R value is positive, the image side surface is judged to be a concave surface; when the R value is negative, the image side surface is judged to be convex.

The utility model discloses a veneer computer camera lens, mainly used unmanned aerial vehicle keep away fields such as barrier and image acquisition. The lens comprises a plastic lens frame 11, an optical assembly installed in the lens frame 11, and a lens mount 12 integrally formed with the lens frame 11, wherein the lens mount 12 is located at the rear end of the lens frame 11, the optical assembly comprises a first lens 21, a second lens 22, a third lens 23, a fourth lens 24, a fifth lens 25, and a sixth lens 26, which are sequentially arranged from front to back (from an object side to an image side) along an optical axis, the first lens 21 is a glass spherical lens, the second lens 22, the third lens 23, the fifth lens 25, and the sixth lens 26 are plastic aspheric lenses, and the fourth lens 24 is a glass aspheric lens.

The lens adopts a 2G4P structure, compared with the existing full-glass design, the weight of the lens is greatly reduced, and meanwhile, the cost is also controlled; the plastic picture frame 11 is adopted for design, and after the structure is optimized, the wall thickness of the picture frame 11 is reduced as much as possible on the premise of uniform wall thickness and enough strength, so that the product weight is greatly reduced compared with the traditional single-focus metal picture frame 11; the lens mount 12 (installed with sensors and the like) and the lens frame 11 are designed in an integrated manner, so that the problem of poor torque fit is avoided, meanwhile, the coaxiality of the lens mount 12 and the lens is effectively guaranteed, the imaging quality of the lens is effectively guaranteed, the processing time can be reduced, and the labor cost is reduced.

Specifically, each of the first to sixth lenses 21 to 26 includes an object-side surface facing the front side (object side) and passing the imaging light, and an image-side surface facing the rear side (image side) and passing the imaging light;

the first lens 21 has negative diopter, and the object side surface of the first lens 21 is a convex surface, and the image side surface is a concave surface;

the second lens 22 has negative diopter, and the object side surface of the second lens 22 is a concave surface, and the image side surface is a concave surface;

the third lens 23 has a positive refractive power, and the object-side surface of the third lens 23 is a concave surface, and the image-side surface is a convex surface;

the fourth lens element 24 has a positive refractive power, and an object-side surface of the fourth lens element 24 is a convex surface and an image-side surface thereof is a convex surface;

the fifth lens element 25 has a positive refractive power, and an object-side surface of the fifth lens element 25 is a convex surface and an image-side surface thereof is a convex surface;

the sixth lens element 26 has negative refractive power, and an object-side surface of the sixth lens element 26 is concave and an image-side surface thereof is concave.

The image-side surface of the fifth lens element 25 and the object-side surface of the sixth lens element 26 are cemented with each other, so that low distortion and large light transmission are achieved on the premise of maintaining a large field angle of the lens. Specifically, the field angle of the lens is 200 degrees, and the shooting range is large; on the basis of keeping the large field angle of the lens, the distortion is small and less than 4.1 percent, so that the actual shape of an object can be effectively reduced; the lens has high light transmission, F/NO =1.8, and imaging is clear at low illumination.

The internal diameter of picture frame 11 reduces gradually from the past to the back, optical component and picture frame 11 inner wall point are glued fixedly. Wherein, the inner wall of picture frame 11 is the step and reduces gradually from the past to the back, when the optical component in the installation picture frame 11, is installed by picture frame 11 rear end to front end in proper order.

A first spacer 27 is disposed between the third lens 23 and the fourth lens 24, and a second spacer 28 is disposed between the fourth lens 24 and the fifth lens 25. The lens is fixed by adopting the optical component for dispensing, the lenses are mostly directly supported and leaned, only two space rings (a first space ring 27 and a second space ring 28) are arranged, and the design of a pressing ring is cancelled, so that the number of parts can be effectively reduced, the assembly efficiency is improved, the weight of the lens is reduced, and meanwhile, the cost is greatly reduced.

Both sides of the spectacle frame 11 extend outwards to form an extension part 13, and the extension part 13 is provided with a fixing hole. Through the fixing hole on the extension part 13, the lens can be directly fixed on the camera shell, and the problem of image shaking and even blurring caused by vibration is effectively solved.

The outer diameter (diameter) of this camera lens is less than 13mm, and weight is less than 2g, under the whole volume, light in weight, be particularly useful for the higher scene of requirement to camera lens outer diameter weight such as unmanned aerial vehicle.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A single board computer camera lens which characterized in that: including the plastics picture frame, install optical assembly in the picture frame, with picture frame integrated into one piece's lens mount, the lens mount is located the rear end of picture frame, optical assembly includes first lens, second lens, third lens, fourth lens, fifth lens, the sixth lens that set gradually along an optical axis in the past to the back, first lens is glass spherical lens, second lens, third lens, fifth lens, sixth lens are plastics aspherical lens, fourth lens is glass aspherical lens.

2. A single board camera lens as claimed in claim 1, wherein: the first lens to the sixth lens respectively comprise an object side surface facing to the front side and allowing the imaging light to pass through and an image side surface facing to the rear side and allowing the imaging light to pass through;

the fourth lens has positive diopter, and the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface;

3. A single board lens as claimed in claim 2, wherein: and the image side surface of the fifth lens and the object side surface of the sixth lens are mutually glued.

4. A single board camera lens as claimed in claim 1, wherein: the internal diameter of picture frame reduces gradually from the past to the back, optical component and picture frame inner wall point are glued fixedly.

5. The single board camera lens of claim 1 or 4, wherein: a first space ring is arranged between the third lens and the fourth lens, and a second space ring is arranged between the fourth lens and the fifth lens.

6. A single board camera lens as claimed in claim 1, wherein: both sides of the mirror frame extend outwards to form an extending part, and the extending part is provided with a fixing hole.

7. A single board lens as claimed in claim 1, wherein: the outer diameter of the lens is less than 13mm.