SPHWHAHDNK27YZR3DB
-
28143169-SPHWHAHDNK27YZR3DB
LED COB WHT LC040D 5000K 90CRI
the angle at which a display can be viewed with acceptable visual performance.
Lenses are classified by the curvature of the two optical surfaces. A lens is biconvex (or double convex, or just convex) if both surfaces are convex. If both surfaces have the same radius of curvature, the lens is equiconvex. A lens with two concave surfaces is biconcave (or just concave).