Answer Happy

Through http://www.matweb.com, determine the possible materials to be used in
"automobile headlamp lens". Discuss the advantages/disadvantages of at least
three different materials.
Show your work by taking screenshots as well.
Function: Protect bulb and lens; focus beam
Objective: Minimize cost
Constraints: Transparent with good optical quality
Resistance to fresh and salt water
Resistance to UV light
Good abrasion resistance (high hardness)
Free variables: Material choice
Note: According to Wikipedia,
"automobile headlamp" is a lamp attached to the front
of a vehicle to light the road ahead.