Light emitting element detecting method and equipment

A vertical-cavity surface-emitting laser (VCSEL) chip detecting method, comprising the steps of:

• a) generating a first control signal to open a shutter of an image capturing device, the image capturing device capturing an image toward at least one light outlet of a VCSEL chip;
• b) generating a pulse signal to light up the VCSEL chip;
• c) generating a second control signal to close the shutter of the image capturing device and obtaining a detection image;
• and
• d) determining a light emitting status of the light outlet of the VCSEL chip according to the detection image;
• wherein the steps a), b) and c) are repeated a plurality of times to obtain a plurality of said detection images, and in the step d), the light emitting status of the light outlet of the VCSEL chip is determined according to the detection images;
• wherein the step d) comprises a sub-step of comparing the detection images to determine whether the light outlet of the VCSEL chip flashes.