Patent · US Active

Testing of miniaturized digital camera modules with electrical and/or optical zoom functions

US7403229B2 · kind B2 · utility

10Cited by

20References

30Claims

0Family size

Assignee

Digital Imaging Systems GmbH · DE

Inventors

Horst Knoedgen · Munich, DE
Dirk Huettmann · Baltmannsweiler, DE

Key dates

Filing date	Aug 30, 2004
Grant date	Jul 22, 2008
Priority date	—
Expiry date	Jul 29, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG01M11/0221
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A test apparatus and method for testing the zoom of a miniature digital camera module is presented. A combination of focus targets are illuminated by different colors of light and simultaneously viewed by the digital camera module. The focus targets range from a far target to a close target and are positioned in the apparatus accordingly. The zoom capability of the camera can be either electrical or manual, and the test apparatus can be adapted to either zoom configurations allowing the zoom of the camera lens to be controlled by a tester. The brightness of the image of the focus targets captured by the digital camera is monitored to determine whether the focus of the camera is maintained over the range of zoom.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.