double-convex lens
double-convex lens
[¦dəb·əl ¦kän‚veks ′lenz] (optics)
A lens having surfaces that are adjacent portions of intersecting spheres whose centers lie on opposite sides of the plane of the lens. Also known as biconvex lens.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
My 10-inch reflector at 299x reveals a dozen stars gathered into a shape that resembles a
double-convex lens.
NGC 1386 isn't in either of the drawn fields, but in the 10-inch scope it's a nicely elongated galaxy, shaped much like a
double-convex lens about 2 1/2' long.
Through my 10-inch scope at 187x, the halo is shaped much like a
double-convex lens. Faint stars pin its rim south-southwest of the galaxy's nucleus and on the north side of its eastern end.
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