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Wide-angle optical lens assembly

一种光学镜头组、广视角的技术，应用在广视角光学镜头组领域，能够解决周边影像亮度不足等问题

Active Publication Date: 2014-02-12
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the second lens of the wide-angle optical lens group is configured with a concave surface on the object side and a convex surface on the image side, which can effectively balance the aberration caused by the first lens in the field of view with a large viewing angle and solve the problem of peripheral image brightness. Insufficient and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0115] Please refer to figure 1 and figure 2 ,in figure 1 A schematic diagram showing a wide viewing angle optical 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 optical lens set of the first embodiment. Depend on figure 1 It can be seen that the wide-angle optical lens group of the first embodiment includes the first lens 110, the second lens 120, the third lens 130, the aperture 100, the fourth lens 140, the fifth lens 150, and the first lens from the object side to the image side in sequence. Six lenses 160, infrared filter filter (IR Filter) 180, flat glass 190 and imaging surface 170, wherein the first lens 110, the second lens 120 and the third lens 130 are the front group lens group, the fourth lens 140, The fifth lens 150 and the sixth lens 160 are rear group lens groups.

[0116] The first lens 110 has negative refractive power, ...

no. 2 example

[0147] Please refer to image 3 and Figure 4 ,in image 3 A schematic diagram showing a wide viewing angle optical 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 optical lens set of the second embodiment. Depend on image 3 It can be seen that the wide-angle optical lens group of the second embodiment includes the first lens 210, the second lens 220, the third lens 230, the aperture 200, the fourth lens 240, the fifth lens 250, and the second lens in order from the object side to the image side. Six lenses 260, infrared filter filter 280, flat glass 290 and imaging surface 270, wherein the first lens 210, the second lens 220 and the third lens 230 are the front group lens group, the fourth lens 240, the fifth lens 250 And the sixth lens 260 is the rear group lens group.

[0148] The first lens 210 has negative refractive power. The objec...

no. 3 example

[0163] Please refer to Figure 5 and Figure 6 ,in Figure 5 A schematic diagram showing a wide viewing angle optical lens group according to the third embodiment of the present invention, Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the wide-angle optical lens set of the third embodiment. Depend on Figure 5 It can be seen that the wide-angle optical lens group of the third embodiment includes the first lens 310, the second lens 320, the diaphragm 301, the third lens 330, the diaphragm 300, the fourth lens 340, and the fifth lens in sequence from the object side to the image side. Lens 350, sixth lens 360, infrared filter filter 380, plate glass 390 and imaging surface 370, wherein the first lens 310, the second lens 320 and the third lens 330 are the front group lens group, the fourth lens 340, The fifth lens 350 and the sixth lens 360 are rear group lens groups.

[0164] The first lens 310 has a negative refractive pow...

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Abstract

A wide-angle optical 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, a fifth lens element, and a sixth lens element. 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 positive refractive power. The fifth lens element with refractive power has an object-side surface and an image-side surface which both are aspheric. The sixth lens element with refractive power has a convex object-side surface, wherein the object-side surface and an image-side surface thereof are both aspheric. At least one of the second lens element and the fifth lens element has at least one inflection point.

Description

technical field [0001] The present invention relates to a wide viewing angle optical lens group, and in particular to a miniaturized wide viewing angle optical lens group applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with photographic functions, the demand for miniaturized photographic lenses has increased day by day, and the photosensitive element of general photographic lenses is nothing more than a charge coupled device (CCD) or complementary There are two types of 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 photographic lens is gradually developing towards the high-pixel field. Therefore, for The requirements for image quality are also increasing day by day. [0003] Traditional miniaturized optical systems mounted on portable electronic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/06G02B13/00G02B1/04
CPCG02B13/06G02B13/0045G02B1/04
Inventor 廖凌峣黄歆璇
Owner LARGAN PRECISION
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