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Optical lens assembly, image capturing unit and electronic device

An optical lens group and lens technology, applied in optics, optical elements, lenses, etc., to reduce the generation of stray light, meet the requirements of CRA specifications, and shorten the length of the back focal length

Active Publication Date: 2021-06-22
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since existing optical lenses are not easy to achieve a balance between requirements such as imaging quality, sensitivity, aperture size, volume or viewing angle, the present invention provides an optical lens to meet the requirements

Method used

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  • Optical lens assembly, image capturing unit and electronic device
  • Optical lens assembly, image capturing unit and electronic device
  • Optical lens assembly, image capturing unit and electronic device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0155] Please refer to Figure 1 to Figure 2 ,in figure 1 shows a schematic diagram of an imaging device according to a first embodiment of the present invention, figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment. Depend on figure 1 It can be seen that the image capturing device includes an optical lens group (not another number) and an electronic photosensitive element 170 . The optical lens group includes the first lens 110, aperture 100, second lens 120, aperture 101, third lens 130, fourth lens 140, filter element (Filter) 150 and Imaging surface 160 . Wherein, the electronic photosensitive element 170 is disposed on the imaging surface 160 . The optical lens group includes four lenses (110, 120, 130, 140), and there is no other interpolated lens between each lens.

[0156] The first lens 110 has positive refractive power and is made of plastic material. Its object-side surface 111 is convex at the ne...

no. 2 example

[0195] Please refer to Figure 3 to Figure 4 ,in image 3 shows a schematic diagram of an imaging device according to a second embodiment of the present invention, Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment. Depend on image 3 It can be seen that the image capturing device includes an optical lens group (not another number) and an electronic photosensitive element 270 . The optical lens group sequentially includes the aperture 200, the first lens 210, the second lens 220, the diaphragm 201, the third lens 230, the fourth lens 240, the filter element 250 and the imaging surface 260 from the object side to the image side of the imaging optical path . Wherein, the electronic photosensitive element 270 is disposed on the imaging surface 260 . The optical lens group includes four lenses (210, 220, 230, 240), and there is no other interpolated lens between each lens.

[0196] The first lens 210 has posi...

no. 3 example

[0208] Please refer to Figure 5 to Figure 6 ,in Figure 5 shows a schematic diagram of an imaging device according to a third embodiment of the present invention, Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment. Depend on Figure 5 It can be seen that the image capturing device includes an optical lens group (not another number) and an electronic photosensitive element 370 . The optical lens group includes an aperture 300, a first lens 310, a second lens 320, a diaphragm 301, a third lens 330, a fourth lens 340, a filter element 350 and an imaging surface 360 ​​in order from the object side to the image side of the imaging optical path . Wherein, the electronic photosensitive element 370 is disposed on the imaging surface 360 ​​. The optical lens group includes four lenses (310, 320, 330, 340), and there is no other interpolated lens between each lens.

[0209] The first lens 310 has positive refractiv...

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PUM

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Abstract

An optical lens assembly includes four lens elements which are, in order from an object side to an image side along an imaging optical path: a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has positive refractive power. The second lens element has an image-side surface being concave in a paraxial region thereof. The third lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and at least one of the object-side surface and the image-side surface of the fourth lens element has at least one inflection point in an off-axis region thereof. When specific conditions are met, the optical lens assembly can meet the requirements of miniaturization and high imaging quality at the same time. The invention further discloses an image capturing unit with the optical lens assembly and an electronic device with the image capturing unit.

Description

technical field [0001] The invention relates to an optical lens group, an image pickup device and an electronic device, in particular to an optical lens group and an image pickup device suitable for the electronic device. Background technique [0002] With the improvement of semiconductor process technology, the performance of electronic photosensitive elements has been improved, and the pixels can reach a smaller size. Therefore, optical lenses with high imaging quality have become an indispensable part. [0003] With the rapid development of science and technology, the application range of electronic devices equipped with optical lenses is wider, and the requirements for optical lenses are also more diverse. Because the existing optical lens is difficult to achieve a balance among requirements such as imaging quality, sensitivity, aperture size, volume, or viewing angle, the present invention provides an optical lens to meet the requirements. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/004G02B13/18G02B13/14G02B9/34G02B5/005G02B27/0025G02B3/04
Inventor 王国睿王冠钧陈泓硕王劲森赖炫睿陈纬彧
Owner LARGAN PRECISION