Assertion: meniscus lens | /r/HasAspect | unequal curvatures
Facets:
value: slightly
type: DEGREE
Source sentences:
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.