公开(公告)号：US20190318464A1

公开(公告)日：2019-10-17

申请号：US15990115

申请日：2018-05-25

Applicant: Primax Electronics Ltd.

Inventor： SHENG-CHI CHAN ,  JUI-TING CHIEN ,  PEI-MING HSU

IPC: G06T7/00 ,  H04N5/225 ,  G06K9/00

Abstract: A fingerprint identification module test system includes a light source, a projection surface, a low-end image pickup device and a judgment module. The light source emits and projects a light beam onto an under-test fingerprint identification module. After the light beam is reflected by the under-test fingerprint identification module and projected onto the projection surface, a projected image is formed on the projection surface. Then, the low-end image pickup device photographs the projected image to acquire an under-test corresponding to the under-test fingerprint identification module. According to the result of comparing the under-test image with the predetermined image, the judgment module judges whether the under-test fingerprint identification module complies with the production specifications. Since the fingerprint identification module test system uses parity devices to test the under-test fingerprint identification module, the fingerprint identification module test system is cost-effective.

公开(公告)号：US20170155819A1

公开(公告)日：2017-06-01

申请号：US15047420

申请日：2016-02-18

Applicant: Primax Electronics Ltd.

Inventor： JUI-TING CHIEN

IPC: H04N5/232 ,  G03B13/36 ,  G02B7/36

CPC classification number: H04N5/23212 ,  G02B7/36 ,  G03B13/36

Abstract: An image focusing method and an image pickup device using the image focusing method are provided. The image focusing method includes following steps. Firstly, an image is captured. Then, the plural first incident light pixels of the image are collected as a first pattern, and plural second incident light pixels of the image as a second pattern. The first pattern has a first block corresponding to a focusing area of the image. The second pattern has a second block corresponding to the focusing area of the image. Then, a phase difference between the first block and the second block and phase differences between the first block and plural test block are obtained. The test blocks are partially overlapped with the second block or located near the second block. Afterwards, a lens module is moved according to the lowest phase difference.

公开(公告)号：US20170244952A1

公开(公告)日：2017-08-24

申请号：US15088713

申请日：2016-04-01

Applicant: Primax Electronics Ltd.

Inventor： JUI-TING CHIEN

IPC: H04N13/02

CPC classification number: H04N13/211 ,  G06T7/571 ,  G06T2207/20224 ,  H04N5/2252 ,  H04N5/2254 ,  H04N5/2257 ,  H04N5/2258 ,  H04N5/2259 ,  H04N5/23258 ,  H04N5/23287 ,  H04N13/128 ,  H04N13/207 ,  H04N2013/0081

Abstract: The present invention provides a method for measuring depth of field of an image, including: (a) picking up a first image at a first position; (b) driving the optical lens to move to a second position in a direction along a non-optical axis, and picking up a second image at the second position; and (c) obtaining depth-of-field data of either the first image or the second image by using a difference between the first image and the second image. In addition, the present invention also provides an image pickup device and an electronic device using the method.

公开(公告)号：US20170244893A1

公开(公告)日：2017-08-24

申请号：US15088682

申请日：2016-04-01

Applicant: Primax Electronics Ltd.

Inventor： JUI-TING CHIEN

IPC: H04N5/232 ,  H04N5/225

CPC classification number: H04N5/23232 ,  G03B5/02 ,  G03B2205/0007 ,  G03B2205/0092 ,  G06T3/4069 ,  H04N5/2257 ,  H04N5/23287 ,  H04N5/349

Abstract: The present invention provides a method for measuring a depth of field of an image, including: (a) picking up a first image having a first resolution at a first position; (b) driving the optical lens to move to a second position in a direction along a non-optical axis, and picking up a second image having a second resolution at the second position; and (c) synthesizing the first image and the second image, so as to obtain a third image having a third resolution, where the third resolution is greater than the first resolution and the second resolution. In addition, the present invention also provides an image pickup device and an electronic device using the method.