Imaging lens assembly, imaging device and mobile terminal

a technology of imaging lens and assembly, which is applied in the field of compact imaging lens assembly, can solve the problems of field curvature, inability of conventional optical systems to meet the requirements of compact optical systems, and inability to provide desirable convergen

Active Publication Date: 2015-04-30
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution provides improved image quality, reduced photosensitivity, and effective correction of aberrations, enabling high-resolution imaging with a compact design suitable for mobile terminals.

Problems solved by technology

However, the conventional optical systems cannot satisfy these requirements of the compact optical systems.
However, the arrangement of the refractive powers of the six-element lens structure is not balanced and which might result into field curvature.
It is also not favorable for providing the desirable convergence across different wavelength ranges so as to correct the chromatic aberration of the imaging lens assembly.
Accordingly, it is not applicable to the mobile terminals with high image quality.

Method used

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  • Imaging lens assembly, imaging device and mobile terminal
  • Imaging lens assembly, imaging device and mobile terminal
  • Imaging lens assembly, imaging device and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

1st embodiment

[0065]FIG. 1A is a schematic view of an imaging device according to the 1st embodiment of the present disclosure. FIG. 1B shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 1st embodiment.

[0066]In FIG. 1A, the imaging device includes the imaging lens assembly (not otherwise herein labeled) of the present disclosure and an image sensor 190. The imaging lens assembly includes, in order from an object side to an image side, an aperture stop 100, a first lens element 110, a second lens element 120, a third lens element 130, a fourth lens element 140, a fifth lens element 150, a sixth lens element 160, an IR-cut filter 170 and an image plane 180, wherein the imaging lens assembly has a total of six lens elements (110-160) with refractive power.

[0067]The first lens element 110 with positive refractive power has a convex object-side surface 111 and a convex image-side surface 112, which are ...

2nd embodiment

[0094]FIG. 2A is a schematic view of an imaging device according to the 2nd embodiment of the present disclosure. FIG. 2B shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 2nd embodiment.

[0095]In FIG. 2A, the imaging device includes the imaging lens assembly (not otherwise herein labeled) of the present disclosure and an image sensor 290. The imaging lens assembly includes, in order from an object side to an image side, an aperture stop 200, a first lens element 210, a second lens element 220, a third lens element 230, a fourth lens element 240, a fifth lens element 250, a sixth lens element 260, an IR-cut filter 270 and an image plane 280, wherein the imaging lens assembly has a total of six lens elements (210-260) with refractive power.

[0096]The first lens element 210 with positive refractive power has a convex object-side surface 211 and a convex image-side surface 212, which are ...

3rd embodiment

[0106]FIG. 3A is a schematic view of an imaging device according to the 3rd embodiment of the present disclosure. FIG. 3B shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 3rd embodiment.

[0107]In FIG. 3A, the imaging device includes the imaging lens assembly (not otherwise herein labeled) of the present disclosure and an image sensor 390. The imaging lens assembly includes, in order from an object side to an image side, an aperture stop 300, a first lens element 310, a second lens element 320, a third lens element 330, a fourth lens element 340, a fifth lens element 350, a sixth lens element 360, an IR-cut filter 370 and an image plane 380, wherein the imaging lens assembly has a total of six lens elements (310-360) with refractive power.

[0108]The first lens element 310 with positive refractive power has a convex object-side surface 311 and a convex image-side surface 312, which are ...

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Abstract

An imaging lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex image-side surface. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has negative refractive power. The sixth lens element with negative refractive power has a concave image-side surface in a paraxial region thereof, wherein both of the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point. The imaging lens assembly has a total of six lens elements with refractive power.

Description

RELATED APPLICATIONS[0001]This application claims priority to Taiwan Application Serial Number 102139027, filed Oct. 29, 2013, which is incorporated by reference herein in its entirety.BACKGROUND[0002]1. Technical Field[0003]The present disclosure relates to an imaging lens assembly. More particularly, the present disclosure relates to a compact imaging lens assembly applicable to a mobile terminal.[0004]2. Description of Related Art[0005]In recent years, with the popularity of mobile terminals having camera functionalities, the demand of miniaturized optical systems has been increasing. As the advanced semiconductor manufacturing technologies have allowed the pixel size of sensors to be reduced and compact optical systems have gradually evolved toward the field of higher megapixels, there is an increasing demand for compact optical systems featuring better image quality.[0006]A conventional compact optical system in a portable electronic product typically utilizes a five-element le...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): G02B13/00G02B3/04
CPCG02B3/04G02B13/0045
InventorTSAI, TSUNG-HANHUANG, HSIN-HSUAN
OwnerLARGAN PRECISION