Optical lens and imaging equipment

An optical lens and lens technology, which is applied in optics, optical components, instruments, etc., can solve the problem that the image quality of the lens is greatly affected, and achieve the effect of improving the camera experience, realizing miniaturization, and achieving a balance of high pixels

Active Publication Date: 2022-06-24
JIANGXI LIANYI OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 lens and imaging equipment
  • Optical lens and imaging equipment
  • Optical lens and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0092] see figure 1 , which is a schematic structural view of the optical lens 100 provided in the first embodiment of the present invention, the optical lens 100 includes in sequence from the object side to the imaging surface S15 along the optical axis: a first lens L1, a second lens L2, a third lens L3, Stop ST, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0093] The first lens L1 has negative refractive power, the object side S1 of the first lens L1 is convex, and the image side S2 of the first lens L1 is concave.

[0094] The second lens L2 has positive refractive power, the object side S3 of the second lens L2 is concave, and the image side S4 of the second lens L2 is convex.

[0095] The third lens L3 has positive refractive power, the object side S5 of the third lens L3 is concave, and the image side S6 of the third lens L3 is convex.

[0096] The fourth lens L4 has positive refractive power, and both the object side S7 of the fourth lens L4 a...

no. 2 example

[0114] see Image 6 , which is a schematic view showing the structure of the optical lens 200 provided in the second embodiment of the present invention. The structure of the optical lens 200 in this embodiment is substantially the same as that of the optical lens 100 provided in the first embodiment. The main difference is that the optical lens The second lens L2 in 200 has negative refractive power, the image side S4 of the second lens L2 is concave, the object side S5 of the third lens L3 is convex, and the curvature radius and material selection of each lens are different.

[0115] In the second embodiment of the present invention, the vertical distance between the inflection point of the object side S13 of the seventh lens L7 and the optical axis is 1.08 mm, and the vertical distance between the inflection point of the image side S14 of the seventh lens L7 and the optical axis is 1.16mm.

[0116] Please refer to Table 3, the relevant parameters of each lens in the optica...

no. 3 example

[0129] see Figure 11 , which is a schematic view showing the structure of the optical lens 300 provided by the third embodiment of the present invention. The structure of the optical lens 300 in this embodiment is substantially the same as that of the optical lens 100 provided in the first embodiment. The main difference is that the optical lens The second lens L2 in 300 has negative refractive power, the image side S4 of the second lens L2 is concave, the object side S5 of the third lens L3 is convex, and the curvature radius and material selection of each lens are different.

[0130] In the third embodiment of the present invention, the vertical distance between the inflection point of the object side S13 of the seventh lens L7 and the optical axis is 1.15mm, and the vertical distance between the inflection point of the image side S14 of the seventh lens L7 and the optical axis is 1.21mm.

[0131] Please refer to Table 5, the relevant parameters of each lens in the optical...

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Abstract

The invention provides an optical lens and an imaging device, wherein the optical lens sequentially includes a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, The sixth lens and the seventh lens. The first lens has negative power, the object side is convex, and the image side is concave; the second lens has power, and the object side is concave; the third lens has positive power, and the image side is convex; the fourth lens has Positive refractive power, the object side and image side are both convex; the fifth lens has positive refractive power, the object side is concave, and the image side is convex; the sixth lens has negative refractive power, and the object side and image side are concave; The seven lenses have positive power, the object side is convex at the near optical axis and has an inflection point, and the image side is concave at the near optical axis and has an inflection point. The optical lens has a super wide angle and a compact structure, and the optical distortion is extremely small, thereby realizing super wide angle, lens miniaturization and high pixel balance.

Description

technical field [0001] The invention relates to the technical field of lens imaging, in particular to an optical lens and imaging equipment. Background technique [0002] In recent years, 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, the wide-angle lens has 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 utilizes the characteristics of a large field of view to obtain more data in a single imaging to capture more scene information. At the same time, the market is increasingly demanding the miniaturization of lenses. However, the reduction in lens size has a great impact on the imaging quality of the lens, especially for wide-angle le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18G02B1/04
CPCG02B13/0045G02B13/06G02B13/18G02B1/041
Inventor 于笑枝曾昊杰刘绪明曾吉勇
Owner JIANGXI LIANYI OPTICS CO LTD
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