Eyewear terminology dictionary [Sa]
sunglasses
It originated as eyewear developed in the United States in 1931 to protect the eyes of pilots. ...
ultraviolet light
Invisible light that has a shorter wavelength than visible light. Sunglasses that block UV ...
straight temple
A general term for the types of temples in which the tips of the temples are straight without b...
cell frame
Classified by material, it was originally a general term for frames using celluloid, but now su...
celluloid
An artificial thermoplastic resin developed as a substitute for ivory. It has been mainly u...
