Difference between revisions of "Filter"
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{{languages|Filter}} | {{languages|Filter}} | ||
[[Category:2.2 Optical Apparatus] | [[Category:2.2 Optical Apparatus]] | ||
[[Category:Alphabetical Index]] | [[Category:Alphabetical Index]] | ||
[[Category:IALA Dictionary 1970-89 Edition]] | [[Category:IALA Dictionary 1970-89 Edition]] |
Latest revision as of 10:01, 1 March 2009
2-2-195
A device which is used to modify, by transmission, the radiant or luminous flux, or the spectral distribution, or both, of the radiation passing through it.
Note: A distinction is made between Selective Filters and Non-Selective Filters according as they do or do not alter the relative spectral distribution of the radiation.
Reference: C.I.E. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)