Question

What do mean by optical central

Answer 1

Define optical centre of a spherical lens. ... (a) It is the central point of the lens through which a ray of light passes without suffering any deviation.

Answer 2

Medical Definition of optical center. : a point on the axis of a lens that is so located that any ray of light passing through it in passing through the lens suffers no net deviation and that may be within, without, or on either surface of the lens.

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