PDAF function detection machine for camera modules and detection method of PDAF function detection machine

Abstract

The invention discloses a PDAF function detection machine for camera modules. The PDAF function detection machine comprises a machine body and a conveying mechanism, wherein the machine body is provided with a plurality of detection stations, a long shot detection mechanism, a close shot detection mechanism and a black and white field detection mechanism; the plurality of detection stations sequentially convey the long shot detection mechanism, the close shot detection mechanism and the black and white field detection mechanism in a staggered cycle along a first conveying direction; the conveying mechanism is used for conveying the plurality of detection stations to the long shot detection mechanism, the close shot detection mechanism and the black and white field detection mechanism to carry out PDAF function detection on the camera module. A detection method of the PDAF function detection machine for the camera modules comprises the following four steps. Testing of different focal distances, a white field and a black field of a plurality of camera modules is completed in one-time conveying process, and the detection efficiency is high.

Description

technical field [0001] The invention relates to the technical field of camera module testing equipment, in particular to a camera module PDAF function testing machine and a testing method thereof. Background technique [0002] PDAF is phase focusing. Its principle is to reserve some shaded pixels on the photosensitive element for phase detection. The distance between pixels and its changes are used to determine the offset value of the focus to achieve accurate focus. When performing detection, phase focusing does not need to adjust the front and rear of the mirror group to find the focus, but judges whether the current focus point is at the front or the back through the signal detected by the camera at the beginning of the focusing action, and accurately The new focusing driver module tells the lens to directly push the lens group to the accurate focus position. However, the existing detectors have complex detection structures and low detection efficiency, which cannot meet...

AI Technical Summary

Problems solved by technology

However, the existing detectors have complex detection structures and low detection efficiency, which cannot meet industrial needs

Images