Tools, Sharpening and Power Machinery - Aspheric Magnifying Glasses

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NutAndBoltKing
05-20-03, 08:09 PM
I bought several different types and styles of magnifying glasses at an auction today. One case is "aspheric" type magnifiers. What is an aspheric magnifier?

fewalt
05-20-03, 08:30 PM
NutandBoltKing,

Edge to edge clarity, according to B & L:

http://www.penntoolco.com/catalog/products/773.cfm

fred
NutAndBoltKing
05-20-03, 09:04 PM
Thank you Fred!!

cheese
05-22-03, 12:05 AM
An aspheric lens is a lens that is not completely spherical in curvature in order to minimize or eliminate error created by the bending of the light coming through the lens. A conventional magnifying lens has it's sharpest focal point in the center. The farther from the center you go, the more error you get. The aspheric lens corrects for this.