focus (Q190909)
point where parallel light rays or light rays originating from a point will converge
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other details
aliases image point
description point where parallel light rays or light rays originating from a point will converge

External Links
(P227) 4602533-9
(P646) /m/03___6
(P1417) technology/focal-point
(P3827) optical-focus
(P6366) 192209626
(P7033) scot/4240
(P8408) Focus-Geometric
(P8814) 11476112-n
(P10283) C2984933120
C192209626
(P11567) focus