Difference between revisions of Diopters
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Diopter is a measure of the power of a [[lens]] (or mirror) and is equal to the reciprocal of [[focal length]] in meters. The unit symbol for diopters is dpt, D, or m<sup>-1</sup>. | Diopter is a measure of the power of a [[lens]] (or mirror) and is equal to the reciprocal of [[focal length]] in meters. The unit symbol for diopters is dpt, D, or m<sup>-1</sup>. | ||