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Wide-angle image capturing lens assembly

A wide viewing angle and lens group technology, applied in the field of wide viewing angle camera lens group, can solve problems such as poor pass rate, difficult assembly, shortening the total length of the lens group, etc.

Active Publication Date: 2014-06-18
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a wide viewing angle imaging lens group. On the premise that the lens group has a large viewing angle, by effectively adjusting the lens configuration between the lens groups, it can improve the quality of the lens group, such as difficult assembly and easy loose structure caused by too large lens spacing. The problem of poor efficiency can be effectively shortened at the same time, and the total length of the lens group can be effectively shortened to be suitable for use in miniaturized devices.

Method used

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  • Wide-angle image capturing lens assembly

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0102] Please refer to figure 1 and figure 2 ,in figure 1 A schematic diagram showing a wide-angle camera lens group according to the first embodiment of the present invention, figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the wide-angle camera lens assembly of the first embodiment. Depend on figure 1 It can be seen that the wide-view camera lens group of the first embodiment includes the first lens 110, the second lens 120, the aperture 100, the third lens 130, the fourth lens 140, the fifth lens 150, the infrared Filter filter (IR-cut Filter) 170 , flat glass 180 and imaging surface 160 .

[0103] The first lens 110 has negative refractive power and is made of plastic. The object-side surface 111 is convex, and the image-side surface 112 is concave, both of which are aspherical.

[0104] The second lens 120 has positive refractive power and is made of plastic. The object-side surface 121 is concave, and the image-side s...

no. 2 example

[0135] Please refer to image 3 and Figure 4 ,in image 3 A schematic diagram showing a wide-angle camera lens group according to the second embodiment of the present invention, Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the wide-angle camera lens assembly of the second embodiment. Depend on image 3 It can be seen that the wide-angle camera lens group of the second embodiment includes the first lens 210, the second lens 220, the aperture 200, the third lens 230, the fourth lens 240, the fifth lens 250, the infrared filter filter 270 , flat glass 280 and imaging surface 260 .

[0136] The first lens 210 has negative refractive power and is made of plastic. The object-side surface 211 is convex, and the image-side surface 212 is concave, both of which are aspherical.

[0137] The second lens 220 has a positive refractive power and is made of plastic. The object-side surface 221 is concave, and the image-side surface 222...

no. 3 example

[0151] Please refer to Figure 5 and Figure 6 ,in Figure 5 A schematic diagram showing a wide-angle camera lens group according to the third embodiment of the present invention, Figure 6From left to right are the spherical aberration, astigmatism and distortion curves of the wide-angle camera lens group of the third embodiment. Depend on Figure 5 It can be seen that the wide-view camera lens group of the third embodiment includes the first lens 310, the second lens 320, the aperture 300, the third lens 330, the fourth lens 340, the fifth lens 350, and the infrared lens in sequence from the object side to the image side. filter filter 370 , flat glass 380 and imaging surface 360 ​​.

[0152] The first lens 310 has negative refractive power and is made of plastic. The object-side surface 311 is concave, and the image-side surface 312 is concave, both of which are aspherical.

[0153] The second lens 320 has a positive refractive power and is made of plastic. The object-...

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Abstract

A wide-angle image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element and each of the first through fifth lens elements is single and non-cemented. The first lens element with negative refractive power has a concave image-side surface. The second lens element with refractive power has a concave object-side surface and a convex image-side surface. The third lens element has positive refractive power. The fourth lens element has negative refractive power, wherein at least one of an object-side surface and an image-side surface of the fourth lens element is aspheric. The fifth lens element with positive refractive power has a convex image-side surface, wherein at least one of an object-side surface and the image-side surface of the fifth lens element is aspheric.

Description

technical field [0001] The present invention relates to a wide-view camera lens group, and in particular to a miniaturized wide-view camera lens group applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with photography functions, the demand for miniaturized optical mirrors has been increasing, and the photosensitive elements of general optical mirrors are nothing more than charge coupled devices (CCD). Or Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor), and with the advancement of semiconductor process technology, the pixel size of the photosensitive element is reduced, and the miniaturized optical mirror group is gradually developing towards the high-pixel field. Therefore, , the requirements for image quality are also increasing. [0003] Traditional miniaturized optical mirrors mounted on portable electronic products, as shown in US Patent No. 8,179,470, mostly use a four-piece lens st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/06G02B13/00
CPCG02B13/18G02B9/60G02B13/0045
Inventor 谢东益陈纬彧
Owner LARGAN PRECISION
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