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Optical lens and imaging equipment

An optical lens, imaging surface technology, applied in optics, optical components, instruments, etc., to achieve high-quality resolution capabilities, good imaging needs, and the effect of meeting imaging needs

Active Publication Date: 2020-11-17
JIANGXI LIANYI OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing optical lenses for smartphones cannot meet these requirements at the same time

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

[0074] see figure 1 , which is a schematic structural view of the optical lens 100 provided by the first embodiment of the present invention, the optical lens 100 includes in sequence from the object side to the imaging surface along the optical axis: a first lens L1, a stop ST, a second lens L2, a second lens Three lens L3, and infrared filter G1.

[0075] The first lens L1 has a positive refractive power, the object side S1 is convex, and the image side S2 is concave;

[0076] The second lens L2 has a positive refractive power, its object side S3 is a concave surface, and its image side S4 is a convex surface;

[0077] The third lens L3 has negative refractive power, the object side S5 is convex, the image side S6 is concave at the near optical axis and has at least one inflection point.

[0078] The first lens L1 , the second lens L2 and the third lens L3 are all plastic aspheric lenses.

[0079] The infrared filter G1 can effectively filter out other light rays other th...

no. 2 example

[0088] see Figure 5 , which is a schematic structural view of the optical lens 200 provided in this embodiment, the structure of the optical lens 200 in this embodiment is roughly the same as that of the optical lens 100 in the first embodiment, the difference is that the optical lens in this embodiment The material of the first lens, the second lens and the third lens of the lens 200 is different from that of the optical lens 100, and the curvature radius of each lens is different.

[0089] The relevant parameters of each lens in the optical lens 200 provided in this embodiment are shown in Table 3. In this embodiment, the vertical distance from the inflection point on the image side S6 of the third lens of the optical lens 200 to the optical axis is 2.04mm, and the sagittal height of the inflection point relative to the center of the image side of the third lens is 0.296mm.

[0090] table 3

[0091]

[0092] The surface coefficients of each aspheric surface of the opti...

no. 3 example

[0097] see Figure 9 , which is a schematic diagram of the structure of the optical lens 300 provided in this embodiment, the structure of the optical lens 300 in this embodiment is roughly the same as that of the optical lens 100 in the first embodiment, the difference is that the optical lens 300 in this embodiment The image side S2 of the first lens of the lens 300 is convex, and the materials of the first lens L1 , the second lens L2 and the third lens L3 are different from those of the optical lens 100 , and the radii of curvature of the lenses are different.

[0098] The relevant parameters of each lens in the optical lens 300 provided in this embodiment are shown in Table 5. In this embodiment, the vertical distance from the inflection point on the image side of the third lens of the optical lens 300 to the optical axis is 2.04 mm, and the sagittal height of the inflection point relative to the center of the image side of the third lens is 0.368 mm.

[0099] table 5

...

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Abstract

The invention discloses an optical lens and an imaging device. The optical lens sequentially comprises: a first lens, a diaphragm, a second lens, a third lens, and a filter along the optical axis from the object side to the imaging surface; The lens has positive refractive power, its object side is convex, and its image side is concave or convex; the second lens has positive refractive power, its object side is concave, and its image side is convex; the third lens has negative light focal power, its object side is convex, its image side is concave at the near optical axis, and its image side has at least one inflection point; wherein, the first lens, the second lens, and the third lens All are plastic aspherical lenses. The optical lens provided by the present invention has the characteristics of wide viewing angle, large aperture, small distortion and high imaging quality, and is more suitable for the design requirements of DToF technology.

Description

technical field [0001] The present invention relates to the technical field of lens imaging, in particular to an optical lens and an imaging device. Background technique [0002] In recent years, 3D depth recognition technology has developed rapidly. At the same time, the ToF (Time of Flight, in-flight ranging) stereoscopic depth-sensing lens with 3D space perception capability has opened up a new future of depth information, and has gained popularity in the smartphone industry. Wide attention and application. ToF technology can be divided into DToF technology and IToF technology according to the principle of ranging. DToF technology (direct Time-of-Flight) directly measures flight time. Compared with IToF technology, DToF technology has higher precision, shorter ranging time, and anti-interference. The ability is strong, and the calibration is relatively simple. [0003] With Apple's launch of the new iPad Pro series of tablet computers using DToF technology's receiver le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/14G02B13/18
CPCG02B13/0035G02B13/0055G02B13/008G02B13/06G02B13/14G02B13/18
Inventor 曾昊杰于笑枝刘绪明曾吉勇
Owner JIANGXI LIANYI OPTICS CO LTD
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