mirror surface; lens surface
Refers to the reflective surface of a mirror or the polished surface of a lens. Often used in technical descriptions or when emphasizing a flawless, reflective finish.
The mountains are reflected in the mirror-like surface of the lake.
The lens surface of this lens is easily scratched, so care is needed.
specular reflection
mirror finish; mirror-like polished surface
specular colour
specular reflection coefficient
Compound of 鏡 (mirror) and 面 (surface). The reading きょうめん uses the on'yomi of both characters.