Photographing optical system, image capturing unit and mobile device

A photographic optical system and image-side technology, applied in the field of photographic optical systems, can solve problems such as the strong refractive power of the first lens and the second lens, which cannot be satisfied, and affect the imaging quality

Active Publication Date: 2015-11-04
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional high-resolution miniaturized photographic lenses mounted on portable electronic products mostly adopt a five-element lens structure. The popularity of miniaturized camera lenses drives higher requirements for pixel and imaging quality, and the existing five-element lens group will not be able to meet higher-level requirements
[0004] Although the traditional six-element optical system has been further developed at present, under the premise of maintaining miniaturization, the refractive power of the first lens and the second lens is too strong, which makes it difficult to correct problems such as excessive system aberrations, which affect imaging. quality

Method used

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  • Photographing optical system, image capturing unit and mobile device
  • Photographing optical system, image capturing unit and mobile device
  • Photographing optical system, image capturing unit and mobile device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0111] 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 an imaging optical system and an electronic photosensitive element 190 . The imaging optical system includes an aperture 100, a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, an infrared filter Element (IR-cut Filter) 170 and imaging surface 180 . Wherein, the electronic photosensitive element 190 is disposed on the imaging surface 180 . There are six lenses with refractive power in the camera optical system. Among the first lens 110 , the second lens 120 , the third lens 130 , the fourth lens 140 , the fifth lens 150 and the sixth lens 160 , there is an ai...

no. 2 example

[0142] 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 an imaging optical system and an electronic photosensitive element 290 . The imaging optical system includes an aperture 200, a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260, an infrared filter Element 270 and imaging surface 280 . Wherein, the electronic photosensitive element 290 is disposed on the imaging surface 280 . There are six lenses with refractive power in the camera optical system. Among the first lens 210 , the second lens 220 , the third lens 230 , the fourth lens 240 , the fifth lens 250 and the sixth lens 260 , there is an air space betwee...

no. 3 example

[0158] Please refer to Figure 5 and Figure 6 ,in Figure 5 A schematic diagram of an imaging device according to a third embodiment of the present invention is shown, 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 imaging optical system and an electronic photosensitive element 390 . The imaging optical system includes a first lens 310, an aperture 300, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, a sixth lens 360, an infrared filter Element 370 and imaging surface 380 . Wherein, the electronic photosensitive element 390 is disposed on the imaging surface 380 . There are six lenses with refractive power in the camera optical system. Among the first lens 310 , the second lens 320 , the third lens 330 , the fourth lens 340 , the fifth lens 350 and the sixth lens 360 , there is an air space betwe...

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PUM

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Abstract

A photographing optical lens assembly includes, in order from the object side to the image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element, the second lens element and the fourth lens element have positive refractive power. The third lens element has refractive power. The fifth lens element has negative refractive power. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region thereof and having at least one convex shape in an off-axis region thereof. An object-side surface and an image-side surface of the sixth lens element both are aspheric. Both of an absolute value of a focal length of the fourth lens element and that of the fifth lens element each are greater than those of the other lens elements.

Description

technical field [0001] The present invention relates to an imaging optical system, an imaging device and a portable device, in particular to an imaging optical system and an imaging 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, and today's electronic products are developing with good functions and thin, light and short appearance. Therefore, miniaturized photographic lenses with good imaging quality have become the mainstream in the current marke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/00
CPCG02B13/0045H04N23/54H04N25/71H04N25/76
Inventor 陈纬彧
Owner LARGAN PRECISION
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