Imaging lens group

An imaging lens and lens technology, which is applied in the field of imaging lens groups, can solve problems such as increased cost and tighter tolerances, and achieve the effects of balanced refractive power configuration, increased imaging angle, and reduced assembly sensitivity

Active Publication Date: 2017-09-01
GLORY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

US20130235463 and US8390941 use more than two pieces of high-refractive materials, which increases the cost, and may make the lens power of the second or third lens smaller, which will make other lenses bear too much refractive power, resulting in tighter tolerances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0126] Please refer to Figure 1A and Figure 1B ,in Figure 1A A schematic diagram showing an imaging lens group according to a first embodiment of the present invention, Figure 1B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging lens group of the first embodiment. Depend on Figure 1A It can be seen that the imaging lens group includes a diaphragm 100 and an optical group, and the optical group includes a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, and a fifth lens 150 in sequence from the object side to the image side. , an infrared filter element 160 , and an imaging surface 170 , wherein there are five lenses with refractive power in the imaging lens group. The aperture 100 is disposed between the image-side surface 112 of the first lens 110 and the subject.

[0127] The first lens 110 has positive refractive power and is made of plastic material. Its object-side surface 111 is convex near the...

no. 2 example

[0156] Please refer to Figure 2A and Figure 2B ,in Figure 2A A schematic diagram showing an imaging lens group according to a second embodiment of the present invention, Figure 2B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging lens group of the second embodiment. Depend on Figure 2AIt can be seen that the imaging lens group includes a diaphragm 200 and an optical group, and the optical group includes a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, and a fifth lens 250 in order from the object side to the image side. , the infrared filtering filter element 260, and the imaging surface 270, wherein the number of lenses with refractive power in the imaging lens group is five. The aperture 200 is disposed between the image-side surface 212 of the first lens 210 and the subject.

[0157] The first lens 210 has positive refractive power and is made of plastic material. Its object-side surface 211 ...

no. 3 example

[0171] Please refer to Figure 3A and Figure 3B ,in Figure 3A A schematic diagram showing an imaging lens group according to a third embodiment of the present invention, Figure 3B From left to right are the spherical aberration, astigmatism and distortion curves of the imaging lens group of the third embodiment. Depend on Figure 3A It can be seen that the imaging lens group includes a diaphragm 300 and an optical group, and the optical group includes a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, and a fifth lens 350 in sequence from the object side to the image side. , an infrared filter element 360, and an imaging surface 370, wherein the imaging lens group has five lenses with refractive power. The aperture 300 is disposed between the image-side surface 312 of the first lens 310 and the subject.

[0172] The first lens 310 has positive refractive power and is made of plastic material. Its object-side surface 311 is convex near the optical...

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PUM

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Abstract

The invention discloses an imaging lens group, which comprises an aperture and an optical group, wherein the optical group comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power and a fifth lens with negative refractive power sequentially from an object side to an image side; and the aperture is arranged between the image side surface of the first lens and a photographed object. The imaging lens group has the advantages of large view angle, high pixel, high resolution ability, short lens length, low material cost and low assembly tolerance sensitivity.

Description

technical field [0001] The invention relates to an imaging lens group, in particular to a miniaturized five-piece imaging lens group applied to electronic products. Background technique [0002] High-quality small camera lenses are standard equipment for current portable electronic products. With the development of the online community, more and more people like to take pictures or take selfies and share them with others. Therefore, the requirements for the camera angle It is getting bigger and bigger. For example, patents US8335043 and US8576497 use 2 lens groups and 5-6 lenses to achieve a large angle. However, the distortion (distortion) is too large, and the total length (TL) of the lens groups is also too long. In US8248713 and US7446955, the first lens is negative refractive power, and the method of combining 3 to 4 lenses with refractive power is used to achieve the purpose of large angle, but the total length of the lens group is also too long. US20130235463 and US8...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18G02B13/06
CPCG02B13/0045G02B13/06G02B13/18
Inventor 钟凤招刘焜地张世远
Owner GLORY SCI
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