Difference between revisions of "Focusing"
Jump to navigation
Jump to search
m (1 revision) |
m (1 revision) |
(No difference)
|
Revision as of 10:05, 25 February 2009
2-2-155
1. The operation of placing a point object at the focus of an optical apparatus.
2. The operation of placing a light source about or near the focus of an optical apparatus in such a way as to produce a desired light distribution.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)