Test device for testing camera module and method thereof

A test device for testing a camera module, the camera module having a lens, a lens barrel, and an image sensor, the test device comprising:

• a storage module storing an effect focus length (EFL) of the camera module and a reference angle;
• an image capturing module, configured to obtain images captured by the camera module, wherein, the camera module is aimed at a reference picture with a label to capture an image corresponding to the reference picture, the reference picture is perpendicular to a center axis of the lens barrel, and the center axis of the lens barrel passes through the label of the reference picture, an incident light of the label passes through the lens and forms an imaged label corresponding to the label on the image sensor;
• a particular point determining module, configured to analyze the image obtained by image capturing module, and identify the label and a central point of the image, wherein, the central point of the image corresponds to the central point of the image sensor, and the label of the image corresponds to the imaged label of the image sensor;
• a calculating module, configured to determine coordinates of the label and the central point of the image, determine the coordinates of the imaged label and the central point of the image sensor, and then calculate an actual distance between the imaged label and the central point of the image sensor according to the coordinates of the imaged label and the central point of the image sensor, and further configured to obtain the EFL from the storage module, and calculate an angle between a center axis of the lens and the center axis of the lens barrel according to the actual distance and the value of the EFL;
• and
• an analysis module, configured to compare the angle with the reference angle to obtain a comparison result, and determine that whether the installation of the camera module satisfies the requirement according to the comparison result.