Transparency

In order to transmit light to the upper part without any loss, the high purity of the transparency is maintained so that the material does not absorb light.

Thermal stability (to prevent yellowing)

When yellowing is generated by heat during the sheet processing, the absorption of light increases and the light transmittance decreases, so the luminance of the product becomes uneven. Therfore, excellent thermal stability of the material is required.

Foreign object

Large foreign objects may result in bright spots, while fine foreign objects may impede the transmittance. LX MMA's optical grade is manufactured in dedicated production lines with strict quality controls to maintain a very high purity.

Heat resistance

Since the light guide panel is located close to the light source, the rraw material is required to have heat resistance characteristics to prevent chages resulting due to the heat generated from the ligth source.

Weather resistance

There should be no changes over time, to prevent deterioration of the transmittance due to
discoloration (yellowing) etc., when a product is used for a long time.

Moisture resistance

SMMA maintains the optical properties of PMMA while having the advantage of low moisture
absorption due to the presence of styrene, thus providing stability in envirenmonts with high temperatures and humidily.