44-30
-
39555530-44-30
Attenuator, Fixed, 30dB, DC-18.0 GHz, 5 watts, N(F)-N(M)
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).