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Photographing optical lens assembly, image capturing device and mobile terminal

An optical mirror and lens technology, applied in the field of imaging devices, portable devices, and photographic optical lens groups, can solve the problems of sharp drop in relative illuminance, poor configuration of the distance between lenses, and large incident angle of light around the image.

Active Publication Date: 2015-10-14
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional photographic lenses mounted on portable electronic products use a five-element lens structure, but the image-side surface of the second lens in the optical system is mainly concave, and the distance between the lenses is poorly configured. The image side of the second lens is designed with a concave surface, so that the incident angle of the light around the image is too large, so it is easy to cause problems such as poor light concentration around the image and a sharp drop in relative illuminance.

Method used

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  • Photographing optical lens assembly, image capturing device and mobile terminal
  • Photographing optical lens assembly, image capturing device and mobile terminal
  • Photographing optical lens assembly, image capturing device and mobile terminal

Examples

Experimental program
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Effect test

no. 1 example

[0107] Please refer to figure 1 and figure 2 ,in figure 1 A schematic diagram of an imaging device according to a first embodiment of the present invention is shown, 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 a photographic optical mirror group and an electronic photosensitive element 180 . The photographic optical lens group includes an aperture 100, a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, an infrared filter filter (IR- Cut Filter) 160 and imaging surface 170. Wherein, the electronic photosensitive element 180 is disposed on the imaging surface 170 . There are five lenses with refractive power in the photographic optical lens group.

[0108] The first lens 110 has positive refractive power and is made of plastic material. The object-side surface 111 is convex at the nea...

no. 2 example

[0138] Please refer to image 3 and Figure 4 ,in image 3 A schematic diagram of an imaging device according to a second embodiment of the present invention is shown, 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 a photographic optical mirror group and an electronic photosensitive element 280 . The photographic optical lens group includes a first lens 210, an aperture 200, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, an infrared filter filter 260 and an imaging lens in sequence from the object side to the image side Surface 270. Wherein, the electronic photosensitive element 280 is disposed on the imaging surface 270 . There are five lenses with refractive power in the photographic optical lens group.

[0139] The first lens 210 has positive refractive power and is made of plastic material. The ...

no. 3 example

[0152] Please refer to Figure 5 and Image 6 ,in Figure 5 A schematic diagram of an imaging device according to a third embodiment of the present invention is shown, Image 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 a photographic optical mirror group and an electronic photosensitive element 380 . The photographic optical lens group includes an aperture 300, a first lens 310, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, an infrared filter filter 360 and an imaging lens in sequence from the object side to the image side. Surface 370. Wherein, the electronic photosensitive element 380 is disposed on the imaging surface 370 . There are five lenses with refractive power in the photographic optical lens group.

[0153] The first lens 310 has positive refractive power and is made of plastic material. The ...

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Abstract

A photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has an object-side surface being convex in a paraxial region thereof. The second lens element has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The third lens element has an object-side surface being convex in a paraxial region thereof. The fourth lens element has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof.

Description

technical field [0001] The invention relates to a photographic optical mirror group, an image pickup device and a portable device, in particular to a photographic optical mirror group and an image pickup device suitable for a portable device. Background technique [0002] In recent years, with the vigorous development of miniaturized photographic lenses, the demand for miniature imaging modules has been increasing day by day, and the photosensitive elements of general photographic lenses are nothing more than charge coupled devices (CCD) or complementary metal oxide semiconductor elements. (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor) two types, and with the improvement of semiconductor process technology, the pixel size of the photosensitive element is reduced. In addition, today's electronic products are developing with a wide viewing angle and a thin, light and short appearance. Therefore, wide-angle and miniaturized photographic lenses with good imaging q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18
CPCG02B13/0045G02B9/60H04N5/2253H04N5/2254G02B13/18H04N23/54
Inventor 林振诚陈纬彧
Owner LARGAN PRECISION
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