Difference between revisions of "Optical Focus"

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(Figs. 12, 13, 14, 15, 17 and 19)
(Figs. 12, 13, 14, 15, 17 and 19)


[[Image:Ch2_Fig12.jpg|400px]]
[[Image:Ch2_Fig12.jpg|400px|border]]


[[Image:Ch2_Fig13.jpg|400px]]
[[Image:Ch2_Fig13.jpg|400px|border]]


[[Image:Ch2_Fig14.jpg|400px]]
[[Image:Ch2_Fig14.jpg|400px|border]]


[[Image:Ch2_Fig15.jpg|400px]]
[[Image:Ch2_Fig15.jpg|400px|border]]


[[Image:Ch2_Fig17.jpg|400px]]
[[Image:Ch2_Fig17.jpg|400px|border]]


[[Image:Ch2_Fig19.jpg|400px]]
[[Image:Ch2_Fig19.jpg|400px|border]]





Revision as of 10:00, 25 February 2009

2-1-125

(Optical) Focus

The point on the axis of an optical system such that rays parallel to the axis and incident on the system converge to this point or appear to emanate from this point after refraction or reflection by the system.

(Figs. 12, 13, 14, 15, 17 and 19)

Ch2 Fig12.jpg

Ch2 Fig13.jpg

Ch2 Fig14.jpg

Ch2 Fig15.jpg

Ch2 Fig17.jpg

Ch2 Fig19.jpg




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)