High Light Transmission (HLT)
The light transmission rate of an average touch screen is approximately 78~81% when measured with either full-spectrum or 550nm wavelength test equipment. Mounting this type of resistive touch screen on a low brightness LCD means viewers will not be able to clearly see items displayed onscreen in a bright light environment.
However, AMT’s High Light Transmission (HLT) touch screen possess a highly increased light transmission rate of 85%, achieved by laminating an AR (Anti-Reflective) layer onto the ITO glass and ITO film, reinforcing light transmission and further improving visibility on a low brightness LCD. This product also allows for light transmission rate adjustment through varying glass thickness and AR coating intensity.
Glass thickness on the HLT touch screen will determine light transmission rates, see the table for reference:
|Glass Thickness||Light Transmission Rate|
|1.1 mm glass||85%|
|1.8 mm glass||84.5%|