Imaging optics lens group

A technology of imaging optics and optical lenses, which is applied in optics, optical components, instruments, etc., can solve problems such as unsatisfactory photography lens modules, and achieve the effects of reducing sensitivity, reducing volume, and high resolution

Active Publication Date: 2012-01-11
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

Method used

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Examples

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no. 1 example

[0092] Please refer to the schematic diagram of the optical system of the first embodiment of the present invention Figure 1A , for the aberration curve of the first embodiment, please refer to Figure 1B . The imaging optical lens group of the first embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:

[0093] A first lens 110 with positive refractive power, its object-side surface 111 and image-side surface 112 are convex, its material is glass, the object-side surface 111 and image-side surface 112 of the first lens 110 are both aspherical ;

[0094] A second lens 120 with negative refractive power, its object side surface 121 is convex and image side surface 122 is concave, its material is plastic, the object side surface 121 and image side surface 122 of the second lens 120 are both aspherical ;

[0095] A third lens 130 with positive refractive power, its object side surface 131 is concave and image side sur...

no. 2 example

[0123] Please refer to the schematic diagram of the optical system of the second embodiment of the present invention Figure 2A , for the aberration curve of the second embodiment, please refer to Figure 2B . 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:

[0124]A first lens 210 with positive refractive power, its object side surface 211 is convex and image side surface 212 is concave, its material is plastic, the object side surface 211 and image side surface 212 of the first lens 210 are both aspherical ;

[0125] A second lens 220 with negative refractive power, its object side surface 221 is convex and image side surface 222 is concave, its material is plastic, the object side surface 221 and image side surface 222 of the second lens 220 are both aspherical ;

[0126] A third lens 230 with positive refractive power, its object side surface 231 is concave and...

no. 3 example

[0148] Please refer to the schematic diagram of the optical system of the third embodiment of the present invention Figure 3A , for the aberration curve of the third embodiment, please refer to Figure 3B . The imaging optical lens group of the third embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:

[0149] A first lens 310 with positive refractive power, its object side surface 311 is convex and image side surface 312 is concave, its material is plastic, the object side surface 311 and image side surface 312 of the first lens 310 are both aspherical ;

[0150] A second lens 320 with negative refractive power, its object side surface 321 is convex and image side surface 322 is concave, its material is plastic, the object side surface 321 and image side surface 322 of the second lens 320 are both aspherical ;

[0151] A third lens 330 with positive refractive power, its object side surface 331 is concave and i...

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Abstract

The invention discloses an imaging optics lens group which sequentially comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power and a fifth lens from an object side to an image side, wherein the object side surface of the first lens is a convex surface; the objectside surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the image side surface of the fourth lens is a concave surface, and the object side surface and the image side surface of the fourth lens are both aspheric surfaces; and the image side surface of the fifth lens is a concave surface, and the object side surface and the image side surface of the fifth lens are both aspheric surfaces. The imaging optics lens group is additionally provided with an aperture and an electronic photosensing unit for imaging a shot object, wherein the aperture is arranged between the shot object and the second lens, and the electronic photosensing unit is arranged at an imaging surface. Through the arrangement way of the lens group in the invention, the volume of the lens group can be effectively reduced, the sensitiveness of an optics system can be lowered, and higher resolution can be obtained.

Description

technical field [0001] The invention relates to an imaging optical lens set, in particular to a miniaturized imaging optical lens set 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. The photosensitive element of a general photographic lens is nothing more than a photosensitive coupling device (Charge Coupled Device, CCD) or a complementary metal-oxide semiconductor device (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor). Moreover, due to improvements in manufacturing technology, the pixel size of the photosensitive element is reduced, and the miniaturized photographic lens is gradually developing into the high-pixel field. Therefore, the requirements for imaging quality are also increasing. [0003] Traditional miniaturized photographic lenses mounted on portable electronic p...

Claims

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Application Information

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