| 摘要 |
A method for adjusting positions of LEDs of an LED light bar includes following steps: providing a circuit board with a plurality of LEDs arranged thereon; measuring offsets X0 between the LEDs and a base line; providing a first flat plate and a second flat plate paralleled to the base line and contacted with two opposite sides of the circuit board; and measuring a distance X1 between the first flat plate and the base line, and a distance X2 between the second flat plate and the base line. Therefore, offsets A between the LEDs and a central axis of a space between the first and second flat plates can be obtained by the following equation: A=X0-(X1-X2)/2. The offsets A are used to adjust the positions of the LEDs to be actually mounted on the circuit board.
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