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Optical Image Capturing System

a technology of optical image and capturing system, which is applied in the field of optical image capturing system, can solve the problems of deterioration of quality, difficulty in manufacturing, and distortion rate in image formation, and achieve the effects of fine tuning, good imaging quality, and reducing the height of the optical system

Active Publication Date: 2016-10-20
ABILITY OPTO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent relates to an optical image capturing system and lens that use special techniques to increase the amount of light and improve image quality. By combining the refractive powers and surfaces of four lens elements, the system can capture more light and have a wider view angle, resulting in better image formation. The lens elements also have inflection points that help correct optical distortion and TV distortion, and a concave surface to reduce back focal length and make the lens smaller. The system is ideal for recording high-definition videos and can be used in miniaturized electronic products.

Problems solved by technology

But the optical image capturing system with the large aperture design often produces more aberration resulting in the deterioration of quality in peripherical image formation and difficulties of manufacturing, and the optical image capturing system with wide view angle design increases distortion rate in image formation, thus the optical image capturing system in prior arts cannot meet the requirement of the higher order camera lens module.
Therefore, how to effectively increase quantity of incoming light and view angle of the optical lenses, not only further improves total pixels and imaging quality for the image formation, but also considers the equity design of the miniaturized optical lenses, becomes a quite important issue.

Method used

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Examples

Experimental program
Comparison scheme
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first embodiment

The First Embodiment

Embodiment 1

[0080]Please refer to FIG. 1A, FIG. 1B, and FIG. 1C, FIG. 1A is a schematic view of the optical image capturing system according to the first embodiment of the present application, FIG. 1B is longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the first embodiment of the present application, and FIG. 1C is a TV distortion grid of the optical image capturing system according to the first embodiment of the present application. As shown in FIG. 1A, in order from an object side to an image side, the optical image capturing system includes an aperture 1, a first lens element 110, a second lens element 120, a third lens element 130, a fourth lens element 140, an IR-bandstop filter 170, an image plane 180, and an image sensing device 190.

[0081]The first lens element 110 has positive refractive power and it is made of plastic mater...

second embodiment

The Second Embodiment

Embodiment 2

[0116]Please refer to FIG. 2A, FIG. 2B, and FIG. 2C, FIG. 2A is a schematic view of the optical image capturing system according to the second embodiment of the present application, FIG. 2B is longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the second embodiment of the present application, and FIG. 2C is a TV distortion grid of the optical image capturing system according to the second embodiment of the present application. As shown in FIG. 2A, in order from an object side to an image side, the optical image capturing system includes first lens element 210, an aperture stop 200, a second lens element 220, a third lens element 230, a fourth lens element 240, an IR-bandstop filter 270, an image plane 280, and an image sensing device 290.

[0117]The first lens element 210 has positive refractive power and it is made of plas...

third embodiment

The Third Embodiment

Embodiment 3

[0129]Please refer to FIG. 3A, FIG. 3B, and FIG. 3C, FIG. 3A is a schematic view of the optical image capturing system according to the third embodiment of the present application. FIG. 3B is longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the third embodiment of the present application, and FIG. 3C is a TV distortion grid of the optical image capturing system according to the third embodiment of the present application. As shown in FIG. 3A, in order from an object side to an image side, the optical image capturing system includes first lens element 310, an aperture stop 300, a second lens element 320, a third lens element 330, a fourth lens element 340, an IR-bandstop filter 370, an image plane 380, and an image sensing device 390.

[0130]The first lens element 310 has positive refractive power and it is made of plastic ...

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Abstract

An optical image capturing system, sequentially including a first lens element, a second lens element, a third lens element and a fourth lens element from an object side to an image side, is disclosed. The first lens element has positive refractive power. The second lens element, the third lens element and the fourth lens element have refractive power respectively. At least one of the image side surface and the object side surface of each of the four lens elements are aspheric. The optical lens elements can increase aperture value and improve the imagining quality for use in compact cameras.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Taiwan Patent Application No. 104112454, filed on Apr. 17, 2015, in the Taiwan Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present disclosure relates to an optical image capturing system, and more particularly to a compact optical image capturing system which can be applied to electronic products.[0004]2. Description of the Related Art[0005]In recent years, with the rise of portable electronic devices having camera functionalities, the demand for an optical image capturing system is raised gradually. The image sensing device of ordinary photographing camera is commonly selected from charge coupled device (CCD) or complementary metal-oxide semiconductor sensor (CMOS Sensor). In addition, as advanced semiconductor manufacturing technology enables the minimization of pixel siz...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02B13/00H04N5/238H04N5/3745G02B9/34H04N23/75
CPCG02B13/004G02B9/34H04N5/238H04N5/3745G02B5/005G02B13/0015G02B13/001G02B13/002G02B13/18G02B27/0025G02B3/04G02B13/06
Inventor LEE, HUNG-WENLIU, YAO-WEICHANG, YEONG-MING
Owner ABILITY OPTO ELECTRONICS TECH
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