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Miniature pick-up lens

A miniature camera and lens technology, applied in optical components, optics, instruments, etc., can solve the problems of short lens size and high tolerance sensitivity

Active Publication Date: 2013-10-16
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this system effectively improves the imaging quality while maintaining the characteristics of miniaturization, the lens cannot better balance the eccentricity tolerance while pursuing miniaturization, which makes the tolerance sensitivity higher, which determines the size of the lens. couldn't make it shorter

Method used

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  • Miniature pick-up lens

Examples

Experimental program
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Effect test

Embodiment Construction

[0043] Optical lens provided by the present invention, as shown in embodiment 1 figure 1 As shown, from the object side to the image side are the diaphragm, the first lens group, the second lens group, the filter E6 and the optical lens, and the first lens group is from the object side to the image side. The first lens E1, the second lens E2 with negative refractive power, and the third lens E3 with positive refractive power, the object side S2 of the first lens E1 is a convex surface, and at least one inflection point is set on the image side surface S3 , the image side S7 of the third lens E3 is a convex surface.

[0044] From the object side to the image side, the second lens group is a fourth lens with positive power, whose object side surface S8 is concave; and a fifth lens with negative power, whose image side is concave.

[0045] At least one surface of the lens is aspherical.

[0046] figure 1 Among them, from the object side to the image side, the diaphragm surface...

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Abstract

The invention provides a miniature pick-up lens, comprising a first lens group and a second lens group from an object side to an image side in sequence. The first lens group comprises a first lens with positive power, a second lens with negative power, a third lens with positive power from an object side to an image side in sequence. An object side of the first lens is a convex surface, and an image side surface is provided with at least an inflection point. An image side surface of the third lens is a convex surface. The second lens group comprises a fourth lens with positive power and a fifth lens with negative power from an object side to an image side in sequence. An object side surface of the fourth lens is a concave surface. An paraxial image side surface is a concave surface, and satisfies 18.0<=(D6 / TTL)x100<=21.5, wherein D6 is a distance between the first lens group and the second lens group on an optical axis, and TTL is overall length of the lenses. The miniature pick-up lens uses five plastic aspheric lenses, and through different focal power distribution, the lens is realized to be miniaturized, and meanwhile the lens has better imaging quality.

Description

technical field [0001] The invention relates to a miniature camera lens, which is a miniature imaging lens system composed of five groups of lenses. Background technique [0002] At present, with the development of CMOS chip technology, the pixel size of the chip is getting smaller and smaller, and the imaging quality requirements of the matching optical system are getting higher and higher, but the size of the optical lens of the mobile phone or digital camera is getting smaller and smaller; Due to the small size and the relatively small number of lenses, ordinary thin lenses cannot meet the high-quality analysis requirements. This will inevitably increase the number of lenses, and at the same time increase the total optical length of the lens, which is difficult to achieve the characteristics of miniaturization. The invention patent with the publication number "CN101876743", the publication date "2010.11.03", and the name "photographic lens group" proposes an optical imagi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/00
Inventor 戴付建黄林
Owner ZHEJIANG SUNNY OPTICAL CO LTD