Disadvantages: unable to withstand high temperature and poor corrosion resistance. Acrylic glass has a big defect, that is, it is easily corroded. Once it comes into contact with oil and salt, it will corrode and deform in the sun.
Acrylic lens is a special organic substance. Its internal structure is chain-shaped, composed of polymers, and most of them are net-shaped. The gaps between molecules are small and easy to move, but acrylic lenses are very transparent. I hope my answer can help you.