Optical imaging system and imaging apparatus having same

An optical imaging system and image-side technology, applied in the field of lenses, can solve problems such as difficulties in lens implementation

Pending Publication Date: 2020-12-04
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in order to achieve high imaging quality and large aperture effect, the number of lenses in the imaging device also needs to be increased, and the increase in the number of lenses also makes it difficult to realize the miniaturization of the lens

Method used

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  • Optical imaging system and imaging apparatus having same
  • Optical imaging system and imaging apparatus having same
  • Optical imaging system and imaging apparatus having same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0069] The optical imaging system of the first embodiment comprises from the object side to the image side of the distribution: a first lens L1, second lens L2, third lens L3, a fourth lens L4, a diaphragm 110, a lens L5 of the fifth, sixth lens L6, a seventh lens L7, an infrared cut filter 120 and an image plane S18. The optical system of the first embodiment of the focal length f = 0.941mm, aperture FNO = 1.9 °, the angle of view FOV = 153 °, the total length of the system TTL = 7.448mm.

[0070] The first lens L1 having a negative refractive power, and a plastic material. Object-side surface to the optical axis paraxial region S1 is convex and the image-side surface S2 is a concave surface paraxial region; object-side surface in the circumferential paraxial region S1 is convex and the image-side surface S2 is a concave surface paraxial region; and the object side surface S1, like the side S2 are aspherical.

[0071] The second lens L2 has a negative refractive power, and a plas...

no. 2 example

[0091] The optical imaging system of the second embodiment includes sequentially distributed from the object side to the image side: the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, aperture 110, the fifth lens L5, the sixth The lens L6, the seventh lens L7, the infrared cut filter 120, and the imaging surface S18. The focal length f = 0.94128mm of the optical system, aperture FNO = 1.9 °, visiting angle FOV = 153.2 °, the total length of the system TTL = 7.459mm.

[0092] The first lens L1 has a negative dysfunction, and is a plastic material. The optical axis surface S1 is a convex surface having a convex surface having a concave surface in the near-axis region of the side surface S2; in the axial portion of the circumferential side surface S1, the outermost area of ​​the side S2 is a concave surface; and the side surface S1, As the side surface S2 is aspherical.

[0093] The second lens L2 has a negative dysfunction, and is a plastic material. The s...

no. 3 example

[0111] The optical imaging system of the third embodiment includes sequentially distributed from the object side to the image side: the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, aperture 110, the fifth lens L5, the sixth The lens L6, the seventh lens L7, the infrared cut filter 120, and the imaging surface S18. The focal length f = 0.939 mm of the optical system, the aperture FNO = 1.96 °, the angle of view FOV = 152.4 °, the total length of the system TTL = 7.368mm.

[0112] The first lens L1 has a negative dysfunction, and is a plastic material. The optical axis surface S1 is a convex surface having a convex surface having a concave surface in the near-axis region of the side surface S2; in the axial portion of the circumferential side surface S1, the outermost area of ​​the side S2 is a concave surface; and the side surface S1, As the side surface S2 is aspherical.

[0113] The second lens L2 has a negative dysfunction, and is a plastic material....

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Abstract

The invention discloses an optical imaging system and an imaging apparatus having the same. The optical imaging system includes, in order from an object side to an image side, a first lens element toa seventh lens element, wherein the first lens has negative refractive power and has a convex object side at a paraxial region and a concave image side at a paraxial region; the second lens with negative refractive power has an image side being concave in a paraxial region; the third lens with refractive power has an object side being convex in a paraxial region and an image side being concave ina paraxial region; the fourth lens with refractive power has an image side being concave in a paraxial region; the fifth lens element with positive refractive power has an image side being convex in aparaxial region; the sixth lens with refractive power has an object side being convex in a paraxial region; and the seventh lens has refractive power. Therefore, both the first lens and the second lens have negative refractive power and can diverge incoming light, so a wide angle can be obtained; and the fifth lens has positive refractive power so as to focus the light before imaging, so imagingis clearer.

Description

Technical field [0001] The present invention relates to a lens, and in particular relates to an optical imaging system having imaging means thereof. Background technique [0002] The development trend of increasingly diverse market in smartphones, tablets, cameras and other electronic products manufacturing technology and the rapid development of user demand for downsizing of the imaging lens needs increased gradually. A mobile phone equipped with multiple cameras at the same time different characteristics and application environments, the trend has been maintained or even reduced, miniaturization of camera phones made more stringent requirements in mobile phones and other electronic products, the size and thickness. Pixel size while reducing the tendency sophisticated, the photosensitive member occurs semiconductor process technology, so the size of the imaging lens having good quality become mainstream. [0003] Better image capture more user experience, the image capturing app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06G02B13/18
Inventor 华露杨健李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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