These techniques are used depending on the purpose of the sign, design preferences, and environmental factors. Front-lit letters are more commonly used, but both techniques can be effectively utilized to enhance aesthetics and visibility.
-
Front-lit Letter: In front-lit letters, the light source (usually LEDs) is positioned in front of the letter. This illuminates the face of the letter, making the text clearly visible.
-
Backlit Letter: In backlit letters, the light source is located behind the letter. The light passes through the back of the letter, spreading outward. This technique enhances the visual impact by emphasizing the outer contours of the letter.