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Optical Imaging Mirror Group

An optical imaging and mirror group technology, applied in the field of optical lenses, can solve problems such as inability to meet high-quality photography, inability to improve the viewing angle, and reduction in the pixel size of the photosensitive element.

Active Publication Date: 2018-06-19
GLORY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional optical lenses used in mobile phone cameras are mostly designed with a three-piece lens structure, such as the content of US Patent No. 7,145,736. The pixel size is constantly decreasing, and the required imaging quality is constantly improving. The ordinary three-piece lens group will not be able to meet the needs of high-quality photography.

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0086] Please refer to Figure 1A and Figure 1B ,in Figure 1A A schematic diagram illustrating an optical 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 optical imaging lens group of the first embodiment. Depend on Figure 1A It can be seen that the optical 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, an infrared filter and an infrared filter in sequence from the object side to the image side. The optical filter element 170 and the imaging surface 180, wherein there are four lenses with refractive power in the optical imaging lens group. The aperture 100 is disposed between the image-side surface 112 of the first lens 110 and the subject.

[0087] The first lens 110 has positive refractive power and is made of plastic ma...

no. 2 example

[0111] Please refer to Figure 2A and Figure 2B ,in Figure 2A A schematic diagram illustrating an optical 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 optical imaging lens group of the second embodiment. Depend on Figure 2A It can be seen that the optical 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, an infrared filter and an infrared filter in sequence from the object side to the image side. The filter element 270 and the imaging surface 280, wherein the number of lenses with refractive power in the optical imaging lens group is four. The aperture 200 is disposed between the image-side surface 212 of the first lens 210 and the subject.

[0112] The first lens 210 has positive refractive power and is made of plasti...

no. 3 example

[0125] Please refer to Figure 3A and Figure 3B ,in Figure 3A A schematic diagram showing an optical 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 optical imaging lens group of the third embodiment. Depend on Figure 3A It can be seen that the optical 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 an infrared filter in sequence from the object side to the image side. The optical filter element 370 and the imaging surface 380, wherein there are four lenses with refractive power in the optical imaging lens group. The aperture 300 is disposed between the image-side surface 312 of the first lens 310 and the subject.

[0126] The first lens 310 has positive refractive power and is made of plastic material. Its object-si...

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Abstract

The invention provides an optical imaging lens group, which includes an aperture and an optical group, and the optical group includes in sequence from the object side to the image side: 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 refractive power; wherein the object-side surface radius of curvature of the second lens is R3, the image-side surface radius of curvature of the second lens is R4, the third The radius of curvature of the object-side surface of the lens is R5, the radius of curvature of the image-side surface of the third lens is R6, and the following conditions are satisfied: -0.62<(R3-R4) / (R3+R4)<-0.51; 0.54<(R5 -R6) / (R5+R6)<0.67. In order to achieve an optical imaging lens group with high resolution and large viewing angle, through the configuration of good lens thickness, it can achieve miniaturization while taking into account the imaging quality of photography, which is beneficial to be mounted on mobile devices.

Description

technical field [0001] The invention relates to an optical lens, in particular to a miniaturized four-piece optical imaging lens group applied to electronic products. Background technique [0002] In recent years, with the rapid development of devices such as smartphones and tablet computers, miniaturized optical lenses used in mobile devices have become indispensable. With the advancement of semiconductor manufacturing technology, image sensors with smaller areas and higher pixels have been developed. The device has led miniaturized optical lenses into the high-pixel field, so the imaging quality has become the research direction of all industries. [0003] The traditional optical lenses used in mobile phone cameras are mostly designed with a three-piece lens structure, such as the content of US Patent No. 7,145,736. The pixel size keeps decreasing, and the required imaging quality keeps improving, and the ordinary three-piece lens group will not be able to meet the needs ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18G02B13/06G02B13/00
Inventor 刘焜地钟凤招
Owner GLORY SCI