Assertion: eyepiece's lens | /r/CapableOf | focus light
Facets:
value: onto the object
type: TRANSITIVE-OBJECT
value: to form an image
type: PURPOSE
value: unlike a prism
type: OTHER
Source sentences:
text: A lens can focus light to form an image, unlike a prism, which refracts light without focusing.
text: Some microscopes also have a condenser lens, which focuses the light onto the object, and a diaphragm or iris, which is a revolving disk with holes of varying sizes.
text: Uses a parabolic mirror instead of a lens to focus light.
text: A telescope's ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light), and its light gathering power is related to the area of the objective.