Camera Optical Lens Group

An optical lens and lens technology, which is applied in the field of miniaturized photographic optical lens sets, can solve problems such as the inability to meet photographic lens modules, and achieve the effects of reduced sensitivity, high resolution, and reduced size

Active Publication Date: 2011-12-07
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the prevalence of high-standard mobile devices such as smart phones (Smart Phone) and PDA (Personal Digital Assistant), the miniaturized photographic lens has rapidly increased in terms of pixels and image quality, and the existing four-element lens group will not be able to meet the req

Method used

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Examples

Experimental program
Comparison scheme
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no. 1 example

[0109] Please refer to the schematic diagram of the optical system of the first embodiment of the present invention figure 1 , for the aberration curve of the first embodiment, please refer to figure 2 . The imaging optical lens group of the first embodiment is mainly composed of five lenses, which include in sequence from the object side to the image side:

[0110] A first lens 110 with positive refractive power, its object-side surface 111 and image-side surface 112 are both convex, and its material is plastic, and the object-side surface 111 and image-side surface 112 of the first lens 110 are both aspherical;

[0111] A second lens 120 with negative refractive power, its object-side surface 121 and image-side surface 122 are both concave, and its material is plastic, and the object-side surface 121 and image-side surface 122 of the second lens 120 are both aspherical;

[0112] A third lens 130 with positive refractive power, its object side surface 131 is concave and im...

no. 2 example

[0149] Please refer to the schematic diagram of the optical system of the second embodiment of the present invention image 3 , for the aberration curve of the second embodiment, please refer to Figure 4 . The imaging optical lens group of the second embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:

[0150] A first lens 210 with positive refractive power, its object-side surface 211 and image-side surface 212 are both convex, and its material is plastic, and the object-side surface 211 and image-side surface 212 of the first lens 210 are both aspherical;

[0151] A second lens 220 with negative refractive power, the object side surface 221 and the image side surface 222 are both concave, the material is plastic, the object side surface 221 and the image side surface 222 of the second lens 220 are both aspherical;

[0152] A third lens 230 with positive refractive power, its object side surface 231 is concave an...

no. 3 example

[0183] Please refer to the schematic diagram of the optical system of the third embodiment of the present invention Figure 5 , for the aberration curve of the third embodiment, please refer to Figure 6 . The photographic optical lens group of the third embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side:

[0184] A first lens 310 with positive refractive power, its object-side surface 311 and image-side surface 312 are both convex, and its material is plastic, and the object-side surface 311 and image-side surface 312 of the first lens 310 are both aspherical;

[0185] A second lens 320 with negative refractive power, its object-side surface 321 and image-side surface 322 are both concave, and its material is plastic, and the object-side surface 321 and image-side surface 322 of the second lens 320 are both aspherical;

[0186] A third lens 330 with positive refractive power, its object side surface 331 is concave...

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PUM

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Abstract

The invention discloses an optical lens group for shooting, which comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with the positive refractive power, a fourth lens with the negative refractive power and a fifth lens, and is also provided with an aperture and an electronic light sensitive element for imaging a shot object, wherein an object side surface of the first lens is a convex surface; an object side surface and an image side surface of the second lens are concave surfaces; an object side surface and an image side surface of the fourth lens are concave surfaces; at least one surface in the object side surface and the image side surface of the fourth lens is an aspheric surface; an object side surface of the fifth lens is a convex surface, and an image side surface of the fifth lens is a concave surface; at least one inflection point is arranged on the image side surface of the fifth lens; the fifth lens is made of a plastic material; and the aperture is arranged between the shot object and the third lens. Due to the configuration mode of the lens group, the volume of the lenses can be effectively reduced, the sensitivity of an optical system is reduced, and higher image resolution can be acquired.

Description

technical field [0001] The invention relates to a camera optical lens group, in particular to a miniaturized camera optical lens group applied to portable 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 CMOS Sensor (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor), and due to the improvement 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 photographic lenses mounted on portable electronic product...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/22
Inventor 汤相岐蔡宗翰
Owner LARGAN PRECISION
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