dioptre   (TTS Sound)

The dioptre has 1 Senses.

• dioptre, diopter
• ジオプトリー
• a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists
• メーターで測定された焦点長の逆数と等しい屈折のレンズの倍率の測定の単位