释义 |
DictionarySeediopterprism diopter
prism diopter[′priz·əm dī′äp·tər] (optics) A unit used in measuring the deviating power of a prism; this power in prism diopters is 100 times the tangent of the angle of deviation of a ray of light. prism diopter
prism di·op·ter (p.d.), the unit of measurement of the deviation of light in passing through a prism, being a deflection of 1 cm at a distance of 1 m. |