Method for manufacturing light emitting diode module

A method for manufacturing an LED module, comprising following steps:

• providing a SMT apparatus having a CCD image sensor, providing a PCB having a plurality of LEDs mounted on, and fixing the PCB in the SMT apparatus;
• providing a plurality of lenses, the CCD image sensor imaging the lenses, and then the SMT apparatus obtaining a location of each lens relative to a corresponding LED, and the SMT apparatus correspondingly positioning the lenses on the PCB to cover the LEDs;
• providing an optical diffusing board located above the lenses, and electrifying the LEDs for emitting light towards the optical diffusing board;
• providing a luminance colorimeter to measure luminance and chroma of light exited from the optical diffusing board, and obtaining a light-emitting data;
• calculating the light-emitting data, and the SMT apparatus correspondingly adjusting positions of the lenses relative to the LEDs;
• and
• fixing the lenses on the PCB.