Is Biconcave the Same as Double Concave?

PCSL · 2012-02-19T19:00:31+00:00

Are they the same thing? I know biconcave has R1=negative and R2= positive. edit: Thanks for any help.

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PCSL

Are they the same thing? I know biconcave has R₁=negative and R₂= positive.

edit: Thanks for any help.

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Redbelly98

Hi,

Yes they mean the same thing, a lens that looks like this:

)( [/size]

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