optical crown Definition

crown glass, crown lens, halo, vertex, coma, camera, decay, decaying, definition, distortion, eye, eyecup, eyes, focus, galo, glass, glory, iris diaphragm, isomerism, magnification, objective, quadrant, refraction, resolve, resolving, sight, sights, troll, trolling, axis, burn, canal, diaphragm, disk, eod, field, finder, glories, gnome, iconoscope, inversion, lens, power, real, resolution, rod, sag, shade, speed, stop, stops, telescope, television, track, vega, young, liquid crystal, mountain specter, aureole, cao, cap, capped, capping, caps, chamberlain, corona, crowning, diadem, eyeglass, skimmer, skull, table, tables, coronagraph, fiduciary, rock, rocks, pandanus, scissorstail, sweatband, widgeon, accede, access, achromatism, acrocarpous, adapter, adhesion, adjustment, admission, advance, advancing, aether, affable, affinity, agglutination, ahriman, algol, alignment, aloe, amblyopia,