Optical image capturing lens assembly

一种撷取镜头、光学影像的技术，应用在光学、光学元件、仪器等方向，能够解决制造困难、系统总长度不易缩短、系统自由度不足等问题

Active Publication Date: 2013-01-30
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has its disadvantages. First, too many glass spherical mirror configurations make the system less free, which makes it difficult to shorten the total length of the system. Second, the glass lens bonding process is not easy, which is easy to cause difficulties in manufacturing.
[0005] It can be seen that the above-mentioned existing optical image capture lens group obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0137] see figure 1 and figure 2 ,in figure 1 A schematic diagram showing an optical image capture 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 optical image capture lens set of the first embodiment. Depend on figure 1 It can be seen that the optical image capture lens group of the first embodiment includes an aperture 100, a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, an infrared filter Sheet (IR Filter) 160 and imaging surface 150.

[0138] The first lens 110 is made of plastic and has positive refractive power. Both the object-side surface 111 and the image-side surface 112 of the first lens 110 are convex and aspherical.

[0139] The second lens 120 is made of plastic and has negative refractive power. The object-side surface 121 of the second lens 120 is concave, and the image-side surface 122 is convex, both of ...

no. 2 example

[0167] see image 3 and Figure 4 ,in image 3 A schematic diagram showing an optical image capture 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 optical image capture lens set of the second embodiment. Depend on image 3 It can be seen that the optical image capture lens group of the second embodiment includes an aperture 200, a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, an infrared filter Sheet 260 and imaging surface 250.

[0168] The first lens 210 is made of plastic and has positive refractive power. The object-side surface 211 of the first lens 210 is convex, and the image-side surface 212 is concave, both of which are aspherical.

[0169] The second lens 220 is made of plastic and has negative refractive power. The object-side surface 221 of the second lens 220 is concave, and the image-side surface 222 is conv...

no. 3 example

[0183] see Figure 5 and Image 6 ,in Figure 5 A schematic diagram illustrating an optical image capture lens group according to a third embodiment of the present invention, Image 6 From left to right are the spherical aberration, astigmatism and distortion curves of the optical image capture lens set of the third embodiment. Depend on Figure 5 It can be seen that the optical image capture lens group of the third embodiment includes the first lens 310, the aperture 300, the second lens 320, the third lens 330, the fourth lens 340, the infrared filter Sheet 360 and imaging surface 350.

[0184] The first lens 310 is made of plastic and has positive refractive power. The object-side surface 311 of the first lens 310 is convex, and the image-side surface 312 is concave, both of which are aspherical.

[0185] The second lens 320 is made of plastic and has negative refractive power. The object-side surface 321 of the second lens 320 is concave, and the image-side surface ...

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PUM

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Abstract

The invention relates to an optical image capturing lens assembly. The optical image capturing lens assembly includes four non-cemented lens elements, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The third lens element with positive refractive power has a convex object-side surface and a convex image-side surface, and is made of plastic material, wherein the surfaces of the third lens element are aspheric. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, and is made of plastic material, wherein the surfaces of the fourth lens element are aspheric. As a result, the total length of the optical image capturing lens assembly can be effectively reduced, the sensitivity thereof is reduced, and quality of imaging is improved.

Description

technical field [0001] The present invention relates to an optical image capturing lens set, in particular to a miniaturized optical image capturing lens set applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with camera functions, the demand for miniaturized optical image capture lens sets is increasing. The photosensitive element of the general optical image capture lens group is nothing more than a charge coupled device (CCD) or a complementary metal oxide semiconductor sensor (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor). Moreover, due to advances in process technology, the pixel size of the photosensitive element is reduced, and the miniaturized optical image capture lens group is gradually developing into the high-pixel field. Therefore, the requirements for image quality are also increasing. [0003] Traditional miniaturized optical image capture lens groups mounted on portable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/00G02B1/04
CPCG02B13/004G02B9/34G02B13/04
Inventor 周明达蔡宗翰
Owner LARGAN PRECISION
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