Optical Lenses and Imaging Equipment

An optical lens and lens technology, which is applied in the field of imaging lenses, can solve the problem that the imaging quality of the lens is greatly affected, and achieve the effect of improving the camera experience, large field of view, and compact structure.

Active Publication Date: 2022-07-22
JIANGXI LIANYI OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the reduction in lens size has a great impact on the imaging quality of the lens, especially for wide-angle lenses with large fields of view

Method used

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  • Optical Lenses and Imaging Equipment
  • Optical Lenses and Imaging Equipment
  • Optical Lenses and Imaging Equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0068] see figure 1 , is a schematic structural diagram of the optical lens 100 provided by the first embodiment of the present invention. The optical lens 100 sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, and a third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the filter G1.

[0069] Wherein, the first lens L1 has negative refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave;

[0070] The second lens L2 has positive refractive power, the object side S3 of the second lens is convex at the near optical axis, and the image side S4 of the second lens is convex;

[0071] The third lens L3 has positive refractive power, the object side S5 of the third lens is convex, and the image side S6 of the third lens is convex;

[0072] The fourth lens L4 has negative refractive power, the object side S7 of the...

no. 2 example

[0086] see Figure 5 , the structure of the optical lens 200 provided by the second embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, and the main difference lies in the curvature radius and material selection of each lens.

[0087] The relevant parameters of each lens in the optical lens 200 provided by the second embodiment of the present invention are shown in Table 3.

[0088] table 3

[0089]

[0090] Table 4 shows the surface shape coefficients of each aspherical surface of the optical lens 200 in this embodiment.

[0091] Table 4

[0092]

[0093] Please refer to Image 6 , Figure 7 and Figure 8 , which are respectively a distortion curve graph, a vertical axis chromatic aberration graph, and an axial chromatic aberration graph of the optical lens 200 .

[0094] Image 6 Indicates the distortion at different image heights on the imaging plane S15. from Image 6 It can be seen ...

no. 3 example

[0098] see Figure 9 The structure of the optical lens 300 provided by the third embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, and the main difference is that the curvature radius and material selection of each lens are different.

[0099] The relevant parameters of each lens in the optical lens 300 provided by the third embodiment of the present invention are shown in Table 5.

[0100] table 5

[0101]

[0102] Table 6 shows the surface shape coefficients of each aspherical surface of the optical lens 300 in this embodiment.

[0103] Table 6

[0104]

[0105] Please refer to Figure 10 , Figure 11 and Figure 12 , which are respectively a distortion curve graph, a vertical axis chromatic aberration graph, and an axial chromatic aberration graph of the optical lens 300 .

[0106] Figure 10 Indicates the distortion at different image heights on the imaging plane S15. from Figure ...

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Abstract

The invention discloses an optical lens and an imaging device. The optical lens sequentially includes from the object side to the imaging surface along the optical axis: a first lens with negative optical power, the object side surface is convex and the image side surface is concave; A second lens of power, whose object side is convex at the near optical axis, and whose image side is convex; diaphragm; a third lens with positive power, whose object and image sides are convex; with negative power The fourth lens, the object side is convex at the near optical axis, the image side is concave; the fifth lens with positive refractive power, the object side is concave, the image side is convex; the sixth lens with negative refractive power , whose object side is convex at the near optical axis and has at least one inflection point, and its image side is concave at the near optical axis and has at least one inflection point. The optical lens has the advantages of large angle of view, high pixel and miniaturization.

Description

technical field [0001] The present invention relates to the technical field of imaging lenses, in particular to an optical lens and an imaging device. Background technique [0002] In recent years, CCD-based camera lenses have been widely used in various fields, especially wide-angle lenses including ultra-wide-angle lenses and fisheye lenses are playing an important role in more and more occasions. In terms of photography, wide-angle lenses have the characteristics of short focus and large field of view, which can produce large barrel distortion to create special effects and bring strong visual impact to the observer. In terms of measurement, the wide-angle lens uses the large field of view to obtain more data in a single imaging to capture more scene information. At the same time, the market's requirements for the miniaturization of lenses are getting higher and higher. [0003] However, the reduction in lens size has a great impact on the imaging quality of the lens, es...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/06G02B13/18
CPCG02B13/0045G02B13/06
Inventor 曾昊杰于笑枝
Owner JIANGXI LIANYI OPTICS CO LTD
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