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Imaging lens

An imaging lens and lens technology, applied in the field of imaging lens, to achieve the effect of good optical performance, high resolution, and short total lens length

Active Publication Date: 2020-09-29
SINTAI OPTICAL SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The development trend of today's imaging lens, in addition to the continuous development towards miniaturization, with different application requirements, it also needs to have light weight and high resolution. Known imaging lenses can no longer meet today's needs. Another kind of The imaging lens of the new structure can meet the needs of miniaturization, light weight and high resolution at the same time

Method used

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Embodiment Construction

[0030] The present invention provides an imaging lens, comprising: a front lens group; and a rear lens group; wherein the front lens group includes a first lens with positive refractive power and a second lens with negative refractive power; wherein the rear lens group includes a third lens with positive refractive power and The fourth lens has a negative refractive power, the third lens includes a convex surface towards the object side and the other convex surface towards the image side, and the fourth lens includes a concave surface towards the image side; wherein the first lens, the second lens, the third lens and the fourth lens Arranged in sequence from the object side to the image side along the optical axis; the imaging lens meets the following conditions: 13.5mm1 1 is the effective focal length of the first lens.

[0031] The present invention provides another imaging lens, comprising: a front lens group; and a rear lens group; wherein the front lens group includes a fi...

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Abstract

The invention relates to an imaging lens which comprises a front lens group and a rear lens group. The front lens group includes a first lens having positive refractive power and a second lens havingnegative refractive power. The rear lens group includes a third lens having positive refractive power and a fourth lens having negative refractive power, the third lens includes a convex surface facing an object side and another convex surface facing an image side, and a fourth lens includes a concave surface facing the image side. The first lens, the second lens, the third lens and the fourth lens are sequentially arranged from the object side to the image side along an optical axis. The imaging lens satisfies the following conditions: 13.5 mm < f+f1 < 20 mm; and f is an effective focal length of the imaging lens, and f1 is an effective focal length of the first lens.

Description

technical field [0001] The invention relates to an imaging lens. Background technique [0002] The development trend of today's imaging lenses, in addition to the continuous development towards miniaturization, also requires light weight and high resolution with different application requirements. Known imaging lenses can no longer meet today's needs, and another The imaging lens of the new architecture can meet the demands of miniaturization, light weight and high resolution at the same time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an imaging lens with short overall length, light weight and high resolution, but still has good optical performance, aiming at the above-mentioned defects of the prior art. [0004] The technical solution adopted by the present invention to solve the technical problem is to provide an imaging lens including a front lens group and a rear lens group. The front lens group inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/004G02B13/18G02B9/34G02B27/0025G02B5/005
Inventor 许荣顺
Owner SINTAI OPTICAL SHENZHEN CO LTD
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