Assertion: lens's power | /r/HasProperty | optical
Facets:
Source sentences:
text: Close-up lenses are often specified by their optical power in diopters, the reciprocal of the focal length in meters.
text: Close-up lenses are usually specified by their optical power, the reciprocal of the focal length in meters.
text: Close-up lenses are usually specified by their optical power, the reciprocal of the focal length in meters.
text: To obtain exactly zero optical power, a meniscus lens must have slightly unequal curvatures to account for the effect of the lens' thickness.
text: To obtain exactly zero optical power, a meniscus lens must have slightly unequal curvatures to account for the effect of the lens' thickness.
text: An ideal thin lens with two surfaces of equal curvature would have zero optical power, meaning that it would neither converge nor diverge light.
text: An ideal thin lens with two surfaces of equal curvature would have zero optical power, meaning that it would neither converge nor diverge light.