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Image capturing lens system

A technology of imaging system and mirror group, which is applied in the parts of TV system, image communication, TV, etc., can solve the problem of insufficient configuration of refractive force of system mirror group structure.

Active Publication Date: 2014-10-15
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide an imaging system mirror group, which is used to solve the problem that the refractive force configuration of the system mirror group structure is not perfect in the existing field

Method used

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Examples

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no. 1 example

[0088] Please refer to the first embodiment of the present invention Figure 1A , for the aberration curve of the first embodiment, please refer to Figure 1B . The imaging system lens group of the first embodiment is mainly composed of five lenses with refractive power, which include sequentially from the object side to the image side:

[0089] A first lens 110 with positive refractive power is made of plastic, its object side 111 is convex, its image side 112 is concave, both sides are aspheric, and its image side 112 is provided with an inflection point;

[0090] A second lens 120 with positive refractive power is made of plastic, its object side 121 is convex, its image side 122 is concave, and both sides are aspherical;

[0091] A third lens 130 with negative refractive power is made of plastic, its object side 131 is concave, its image side 132 is convex, and both sides are aspherical;

[0092] A fourth lens 140 with positive refractive power is made of plastic, its ob...

no. 2 example

[0119] Please refer to the second embodiment of the present invention Figure 2A , for the aberration curve of the second embodiment, please refer to Figure 2B . The imaging system lens group of the second embodiment is mainly composed of five lenses with refractive power, which include sequentially from the object side to the image side:

[0120] A first lens 210 with positive refractive power is made of plastic, its object side 211 is convex, its image side 212 is concave, both sides are aspherical, and its image side 212 is provided with an inflection point;

[0121] A second lens 220 with positive refractive power is made of plastic, its object side 221 is convex, its image side 222 is concave, and both sides are aspherical;

[0122] A third lens 230 with negative refractive power is made of plastic, its object side 231 is concave, its image side 232 is convex, and both sides are aspherical;

[0123] A fourth lens 240 with positive refractive power is made of plastic, ...

no. 3 example

[0132] Please refer to the third embodiment of the present invention Figure 3A , for the aberration curve of the third embodiment, please refer to Figure 3B . The imaging system lens group of the third embodiment is mainly composed of five lenses with refractive power, which include sequentially from the object side to the image side:

[0133] A first lens 310 with positive refractive power is made of plastic, its object side 311 is convex, its image side 312 is concave, both sides are aspheric, and its image side 312 is provided with an inflection point;

[0134] A second lens 320 with positive refractive power is made of plastic, its object side 321 is convex, its image side 322 is concave, and both sides are aspherical;

[0135] A third lens 330 with negative refractive power is made of plastic, its object side 331 is concave, its image side 332 is concave, and both sides are aspherical;

[0136] A fourth lens 340 with positive refractive power is made of plastic, its ...

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Abstract

This invention provides an image capturing lens system comprising from object-side to image-side: a positive first lens element; a positive second lens element having a convex object-side surface; a negative third lens element; a positive fourth lens element having a convex image-side surface; and a negative fifth lens element having a concave image-side surface, both of the object-side and image-side surfaces being aspheric, and at least one of the object-side and image-side surfaces having at least one inflection point. Both the first and second lens elements of the image capturing lens system provided by the present invention have positive refractive power, which helps to distribute the positive refractive power needed; therefore, the aberrations and the manufacturing sensitivity are reduced, and the yield rate can be enhanced.

Description

technical field [0001] The present invention relates to an imaging system mirror group, in particular to an imaging system mirror group applied to portable electronic products. Background technique [0002] With the gradual thinning of personal electronic products, the internal components of electronic products are required to have a smaller size. Under this trend, the size of photographic lenses is also facing the requirement of miniaturization. In addition to the requirement of miniaturization, because of the progress of semiconductor process technology, the pixel area of ​​the photosensitive element is reduced, and the photographic lens is gradually developing into the field of high pixel. Therefore, the requirements for imaging quality are also increasing. [0003] Traditional miniaturized photographic lenses mounted on portable electronic products, as shown in US Patent No. 8,169,528, mostly adopt a four-piece lens structure. The prevalence of such high-standard mobil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045H04N5/2254
Inventor 薛钧哲蔡宗翰陈纬彧
Owner LARGAN PRECISION
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