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Optical image capturing system

An optical imaging system, image-side technology, applied in optics, optical components, instruments, etc., can solve problems such as manufacturing difficulties, increased distortion rate, and deterioration of peripheral imaging quality, achieve optimal optical path adjustment capabilities, improve imaging quality, and improve overall quality. Pixel vs. Quality Effects

Active Publication Date: 2016-05-25
ABILITY OPTO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the design of optical systems with large apertures often faces more aberrations, resulting in deterioration of peripheral imaging quality and manufacturing difficulties, while the design of optical systems with wide viewing angles is faced with increased imaging distortion. Existing optical imaging systems Can no longer meet higher-level photography requirements

Method used

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Examples

Experimental program
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Embodiment approach

[0110] The sum of the focal lengths fp of each lens with positive refractive power in the optical imaging system is ΣPP, and the sum of the focal lengths of each lens with negative refractive power is ΣNP. An embodiment of the optical imaging system provided by the present invention satisfies the following Conditions: 0<ΣPP≦200; and f1 / ΣPP≦0.85. Preferably, the following conditions can be satisfied: 0<ΣPP≦150; and 0.01≦f1 / ΣPP≦0.6. Thereby, it is helpful to control the focusing ability of the optical imaging system, and properly distribute the positive refractive power of the system to suppress the premature occurrence of significant aberrations. The following conditions are simultaneously satisfied: ΣNP<-0.1; and f5 / ΣNP≦0.85. Preferably, the following conditions can be satisfied: ΣNP<0; and 0.01≦f5 / ΣNP≦0.5. Helps control the overall refractive power and overall length of the optical imaging system.

[0111] The first lens has positive refractive power, and its object side c...

no. 1 example

[0143] Such as Figure 1A and Figure 1B shown, where Figure 1A is a schematic diagram of an optical imaging system according to the first embodiment of the present invention, Figure 1B From left to right are the spherical aberration, astigmatism and optical distortion curves of the optical imaging system of the first embodiment. Figure 1C It is a TV distortion curve diagram of the optical imaging system of the first embodiment. Depend on Figure 1A It can be seen that the optical imaging system includes a first lens 110, an aperture 100, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, an infrared filter 170, and an imaging surface from the object side to the image side in sequence. 180 and an image sensing element 190 .

[0144] The first lens 110 has positive refractive power and is made of plastic material. The object side 112 is convex, and the image side 114 is concave, both of which are aspherical. The image side 114 has an inflection point...

no. 2 example

[0187] Such as Figure 2A and Figure 2B shown, where Figure 2A It is a schematic diagram of an optical imaging system according to the second embodiment of the present invention, Figure 2B From left to right are the spherical aberration, astigmatism and optical distortion curves of the optical imaging system of the second embodiment. Figure 2C It is a TV distortion curve diagram of the optical imaging system of the second embodiment. Depend on Figure 2A It can be seen that the optical imaging system 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 270, and an imaging surface from the object side to the image side in sequence. 280 and the image sensing element 290.

[0188] The first lens 210 has positive refractive power and is made of plastic material. The object side 212 is convex, and the image side 214 is concave, both of which are aspherical. Both the object side 212 and the ...

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Abstract

The invention discloses an optical image capturing system, including a first lens, a second lens, a third lens, a fourth lens and a fifth lens sequentially arranged from an object side to an image side. The first lens is provided with refraction power, and an object side can be a convex side. The second to fourth lenses are with refractive power, and the two surfaces of each lens are both aspheric surfaces; the fifth lens can have negative refractive power, and an image-side surface thereof can be concave; two surfaces are both aspheric surfaces, wherein at least one surface of the fifth lens possesses an inflection point. When specific conditions are satisfied, the optical image capturing system can possess greater light receiving and better optical path adjustment capabilities to improve imaging qualities.

Description

technical field [0001] The invention relates to an optical imaging system, and in particular to a small optical imaging system applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with photography functions, the demand for optical systems has increased day by day. The photosensitive element of a general optical system is nothing more than a photosensitive coupling device (Charge Coupled Device; CCD) or a complementary metal oxide semiconductor element (Complementary Metal-Oxide Semiconductor du T Por Sensor; CMOS Sensor), and with the advancement of semiconductor manufacturing technology, the pixel size of the photosensitive element Zooming out, the optical system is gradually developing in the direction of high pixels, so the requirements for imaging quality are also increasing. [0003] Traditional optical systems mounted on portable devices mostly use a three- or four-lens lens structure. However, du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B9/60
Inventor 唐乃元张永明
Owner ABILITY OPTO ELECTRONICS TECH
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