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Photographing lens assembly

一种镜组、透镜的技术，应用在光学、仪器、光学元件等方向

Active Publication Date: 2013-10-23
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention provides an imaging system mirror group, which includes two lenses with refractive power. Through the matching of the dispersion coefficients of the two lenses, the imaging system mirror group can effectively improve the chromatic aberration problem of the system, and the imaging The lens structure design of the system lens group conforms to the characteristics of thinness, miniaturization and low cost, and can effectively correct the defocusing problem of the peripheral image caused by the excessive curvature of the image image surface, so as to maintain good imaging quality

Method used

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  • Photographing lens assembly
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0070] Please refer to figure 1 and figure 2 ,in figure 1 A schematic diagram of an imaging system mirror group according to the first embodiment of the present invention is shown, figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging system lens group of the first embodiment. Depend on figure 1 It can be seen that the lens group of the imaging system includes an aperture 100 , a first lens 110 , a second lens 120 , an IR filter 140 and an imaging surface 130 sequentially from the object side to the image side.

[0071] The first lens 110 has positive refractive power, and the object-side surface 111 near the optical axis and the image-side surface 112 near the optical axis are both convex and aspherical, and the first lens 110 is made of plastic.

[0072] The second lens 120 has a negative refractive power, its object side surface 121 is a convex surface near the optical axis, its image side surface 122 is a concave s...

no. 2 example

[0093] Please refer to image 3 and Figure 4 ,in image 3 A schematic diagram of an imaging system mirror group according to a second embodiment of the present invention is shown, Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging system lens group of the second embodiment. Depend on image 3 It can be seen that the imaging system lens group includes an aperture 200 , a first lens 210 , a second lens 220 , an infrared filter 240 and an imaging surface 230 sequentially from the object side to the image side.

[0094] The first lens 210 has a positive refractive power, and the object-side surface 211 near the optical axis and the image-side surface 212 near the optical axis are both convex and aspherical, and the first lens 210 is made of plastic.

[0095] The second lens 220 has a negative refractive power, its object side surface 221 is a convex surface near the optical axis, its image side surface 222 is a concave ...

no. 3 example

[0105] Please refer to Figure 5 and Figure 6 ,in Figure 5 A schematic diagram of an imaging system mirror group according to a third embodiment of the present invention is shown, Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the imaging system lens group of the third embodiment. Depend on Figure 5 It can be seen that the lens group of the imaging system includes an aperture 300 , a first lens 310 , a second lens 320 , an infrared filter 340 and an imaging surface 330 sequentially from the object side to the image side.

[0106] The first lens 310 has positive refractive power, and the object-side surface 311 near the optical axis and the image-side surface 312 near the optical axis are both convex and aspherical, and the first lens 310 is made of plastic.

[0107] The second lens 320 has a negative refractive power, its object side surface 321 is a convex surface near the optical axis, its image side surface 322 is a co...

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PUM

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Abstract

A photographing lens assembly includes, in order from an object side to an image side, a first lens element and a second lens element. The first lens element with positive refractive power has an object-side surface and an image-side surface, wherein the object-side surface and the image-side surface of the first lens element are convex at a paraxial region thereof. The second lens element with refractive power is made of plastic material, and has an object-side surface and an image-side surface, wherein the object-side surface of the second lens element is convex at a paraxial region thereof, the image-side surface of the second lens element is concave at the paraxial region and is convex at a peripheral region thereof, and the object-side surface and the image-side surface of the second lens element are aspheric.

Description

technical field [0001] The present invention relates to an imaging system mirror group, and in particular to a miniaturized imaging system mirror group applied to electronic products and a three-dimensional (3D) image extension application imaging system mirror group. Background technique [0002] In recent years, electronic products have been widely used in various mobile devices, such as smartphones, tablet computers, Ultrabooks and other portable electronic products, with the main appeal of being thin and portable. The ground is required to be miniaturized and low cost. Traditionally, there are three or more optical systems with refractive power, as disclosed in US Patent No. US 8,094,231B2 and US 8,089,704B2. The degree is limited, and the cost and manufacturing and assembly complexity are relatively high. [0003] Although there is a two-piece optical system at present, as disclosed in U.S. Patent No. US 7,821,724B2, it is an optical system with two lenses, but the opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/22G02B13/06G02B1/04G02B1/00
CPCG02B13/18G02B1/04G02B13/003G02B13/06G02B13/22
Inventor 蔡宗翰陈纬彧
Owner LARGAN PRECISION