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Imaging lens

An imaging lens and lens technology, which is applied in the field of imaging lens, can solve the problems of miniaturization and high resolution, etc., and achieve the effect of good optical performance, short total lens length and sufficient lens resolution

Active Publication Date: 2017-02-01
ETHER OPTRONICS SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an imaging lens, which has a short total length but still has good optical performance and can resolve The rate can also meet the requirements

Method used

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Embodiment Construction

[0029] see figure 1 , figure 1 It is a schematic diagram of lens configuration and optical path according to the first embodiment of the imaging lens of the present invention. The imaging lens 1 sequentially includes a first lens L11 , a second lens L12 , a diaphragm ST1 , a third lens L13 , a fourth lens L14 , a fifth lens L15 and an optical filter OF1 along the optical axis OA1 from the object side to the image side. During imaging, the light from the object side is finally imaged on the imaging surface IMA1. The first lens L11 has a positive refractive power and is made of plastic material. The object side S11 is convex and the image side S12 is convex. Both the object side S11 and the image side S12 are aspherical surfaces. The second lens L12 has a negative refractive power and is made of plastic material. The object side S13 is convex and the image side S14 is concave. Both the object side S13 and the image side S14 are aspheric surfaces. The third lens L13 has negati...

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Abstract

Disclosed is an imaging lens. The imaging lens sequentially comprises a first lens, a second lens, an aperture, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis, wherein the first lens is a double-convex lens and has positive refractive power; the second lens is a convex-concave lens and has negative refractive power, the convex surface of the second lens is oriented towards the object side, and the concave surface of the second lens is oriented towards the image side; the third lens is a convex-concave lens and has negative refractive power, the convex surface of the third lens is oriented towards the object side, and the concave surface of the third lens is oriented towards the image side; the fourth lens is a concave-convex lens and has positive refractive power, the concave surface of the fourth lens is oriented towards the object side, and the convex surface of the fourth lens is oriented towards the image side; and the fifth lens is a double-concave lens and has negative refractive power. The imaging lens satisfies the following conditions: 1.10<DL1<DST<10.90, wherein DL1 is an effective diameter of the first lens, and DST is an effective diameter of the aperture.

Description

technical field [0001] The invention relates to an imaging lens. Background technique [0002] The continuous development of digital cameras and mobile phones towards higher resolution and lighter weight has greatly increased the demand for miniaturized and high-resolution imaging lenses. Most of the existing imaging lenses composed of five lenses use a combination of one low Abbe number lens and four high Abbe number lenses, and then match the front aperture to achieve the miniaturization and improvement of the imaging lens. resolution purpose. However, it is still not perfect and there is still room for improvement. An imaging lens with another structure is needed to meet today's needs. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an imaging lens which has a short total lens length but still has good optical performance and can resolve rate can also meet the requirements. [0004] The technical solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/00
CPCG02B9/60G02B13/0045
Inventor 陈柏言张锡龄
Owner ETHER OPTRONICS SHENZHEN