LENS MODULE TESTING DEVICE

摘要

Lens module testing device for testing a lens module includes a testing platform, a light source, a testing board, a sensing element, a processor, a driving element, and a position feedback unit. The light source, the testing board, and the sensing element are arranged in order on the testing platform along an optical axis of the lens module. The lens module is positioned between the testing board and the sensing element. The light source emits testing light to the testing board, and the sensing element senses an image of the testing board and sends the image to the processor. The processor determines whether the testing board is in a focal plane of the lens module, controls the driving element to adjust a position of the testing board relative to the lens module, and obtains position information from the position feedback unit to generate a focal length of the lens module.

主权项

1. A lens module testing device for testing a lens module, comprising:
a testing platform; a light source positioned on the testing platform; a testing board positioned on the testing platform and being fixed relative to the light source, the testing board defining a pattern portion comprising a plurality of hollow patterns; a sensing element positioned on the testing platform; a processor electrically connected to the sensing element; a driving element electrically connected to the processor; and a position feedback unit electrically connected to the processor; wherein the light source, the testing board, the sensing element are arranged in order along an optical axis of the lens module, the lens module is positioned between the testing board and the sensing element, the light source is configured for emitting testing light to the testing board, the sensing element is configured for sensing an image of the testing board, and the processor is configured for determining whether the testing board is in a focal plane of the lens module, controlling the driving element to adjust position of the testing board relative to the lens module, and generating a focal length of the lens module from position information from the position feedback unit.