Camera optical lens group

An optical mirror and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of large optical total length, increased lens structure, and difficulty in meeting the use of photographic lenses, etc. The effect of increasing and decreasing sensitivity

Active Publication Date: 2012-07-04
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this form can correct most of the aberrations produced by the optical system, it has a large demand for the total optical length, resulting in the lens structure must be increased to match the total optical length, making it difficult to meet the needs of thinner and smaller photographic lenses.

Method used

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  • Camera optical lens group
  • Camera optical lens group
  • Camera optical lens group

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0095] 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 optical lens group of the first embodiment is mainly composed of three lenses, which sequentially include from the object side to the image side:

[0096] A first lens 100 with positive refractive power, its object-side surface 101 and image-side surface 102 are both convex, and its material is plastic, and the object-side surface 101 and image-side surface 102 of the first lens 100 are both aspherical;

[0097] A second lens 110 with positive refractive power, its object side surface 111 is concave and image side surface 112 is convex, its material is plastic, the object side surface 111 and image side surface 112 of the second lens 110 are both aspherical ;

[0098] A third lens 120 with negative refractive power, its object-side surface 121 is convex and image-side surface 122 is concave, and its mater...

no. 2 example

[0126] 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 optical lens group of the second embodiment is mainly composed of three lenses, which sequentially include from the object side to the image side:

[0127] A first lens 200 with positive refractive power, its object-side surface 201 and image-side surface 202 are both convex, and its material is plastic, and the object-side surface 201 and image-side surface 202 of the first lens 200 are both aspherical;

[0128] A second lens 210 with positive refractive power, its object-side surface 211 is concave and image-side surface 212 is convex, and its material is plastic. The object-side surface 211 and image-side surface 212 of the second lens 210 are both aspherical ;

[0129] A third lens 220 with negative refractive power, its object-side surface 221 and image-side surface 222 are both concave, and its m...

no. 3 example

[0151] 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 optical lens group of the third embodiment is mainly composed of three lenses, which sequentially include from the object side to the image side:

[0152] A first lens 300 with positive refractive power, its object-side surface 301 and image-side surface 302 are both convex, and its material is plastic, and the object-side surface 301 and image-side surface 302 of the first lens 300 are both aspherical;

[0153] A second lens 310 with positive refractive power, its object side surface 311 is concave and image side surface 312 is convex, its material is plastic, the object side surface 311 and image side surface 312 of the second lens 310 are both aspherical ;

[0154] A third lens 320 with negative refractive power, its object-side surface 321 is convex and image-side surface 322 is concave, and its mate...

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Abstract

The invention provides a camera optical lens group sequentially comprising a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power and an aperture from an object side to an image side. The object side surface and the image side surface of the first lens are both convex surfaces, the object side surface of the second lens is a concave surface, the image side surface of the second lens is a convex surface, and the object side surface and the image side surface of the second lens are non-spherical surfaces; the image side surface of the third lens is a concave surface and is provided with at least one inflexion point, the object side surface and the image side surface of the third lens are non-spherical surfaces; and the aperture is arranged between a shot object and the second lens, wherein the camera optical lens group is provided with only three lenses with refractive power. Through the configuration mode of the lens group, the size of the lens group can be effectively decreased, and the sensitivity of an optical system can be weakened to obtain greater resolving power.

Description

technical field [0001] The present invention relates to a camera optical mirror group; in particular to a miniaturized camera optical mirror group applied to a camera phone. Background technique [0002] In recent years, with the rise of mobile phone cameras, the demand for miniaturized photographic lenses has been increasing, and the photosensitive elements of general photographic lenses are nothing more than photocoupled devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices ( Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor) two, and with the improvement of semiconductor process technology, the pixel size of the photosensitive element is reduced, and the development trend of today's electronic products is good function and thin, light and small appearance. Therefore, Miniaturized photographic lenses with good imaging quality have become the mainstream in the current market. [0003] Known miniaturized photographic lenses, in or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18
Inventor 蔡宗翰
Owner LARGAN PRECISION
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