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9 definitions found
From The Collaborative International Dictionary of English v.0.44 : [ gcide ]
Iris diaphragm \I"ris di"a*phragm\
An adjustable diaphragm, reminiscent of the iris of the eye
in its action, by which the diameter of an approximately
circular opening may be controlled, as for regulating the
aperture of a lens; it consists of a number of movable thin
curved plates fastened at regular intervals around the inside
of a ring, the positions of which are simultaneously adjusted
by a single knob on the outside of the lens. It is used in
cameras and microscopes.
[Webster 1913 Suppl. +PJC]
From Webster's Revised Unabridged Dictionary (1913) : [ web1913 ]
Iris diaphragm \I"ris di"a*phragm\
An adjustable diaphragm, suggesting the iris of the eye in
its action, for regulating the aperture of a lens, consisting
of a number of thin pieces fastened to a ring. It is used in
cameras and microscopes.
From WordNet (r) 2.0 : [ wn ]
iris diaphragm
n : diaphragm consisting of thin overlapping plates that can be
adjusted to change the diameter of a central opening
[syn: iris]
From English Wiktionary: All languages (2023-07-27) : [ dictinfo.com:wikt-en-ALL-2023-07-27 ]
iris diaphragm
n.
An adjustable diaphragm by which the diameter of an approximately
circular opening may be controlled, as for regulating the aperture of a
lens; it consists of a number of movable thin curved plates fastened at
regular intervals around the inside of a ring, the positions of which
are simultaneously adjusted by a single knob on the outside of the lens.
It is used in cameras and microscopes.
From English Wiktionary: English language only (2023-07-27) : [ dictinfo.com:wikt-en-en-2023-07-27 ]
iris diaphragm
n.
An adjustable diaphragm by which the diameter of an approximately
circular opening may be controlled, as for regulating the aperture of a
lens; it consists of a number of movable thin curved plates fastened at
regular intervals around the inside of a ring, the positions of which
are simultaneously adjusted by a single knob on the outside of the lens.
It is used in cameras and microscopes.
From English Wiktionary: Western, Greek, and Slavonic languages only (2023-07-27) : [ dictinfo.com:wikt-en-Western_Greek_Slavonic-2023-07-27 ]
iris diaphragm
n.
An adjustable diaphragm by which the diameter of an approximately
circular opening may be controlled, as for regulating the aperture of a
lens; it consists of a number of movable thin curved plates fastened at
regular intervals around the inside of a ring, the positions of which
are simultaneously adjusted by a single knob on the outside of the lens.
It is used in cameras and microscopes.
From English Wiktionary: Western languages only (2023-07-27) : [ dictinfo.com:wikt-en-Western-2023-07-27 ]
iris diaphragm
n.
An adjustable diaphragm by which the diameter of an approximately
circular opening may be controlled, as for regulating the aperture of a
lens; it consists of a number of movable thin curved plates fastened at
regular intervals around the inside of a ring, the positions of which
are simultaneously adjusted by a single knob on the outside of the lens.
It is used in cameras and microscopes.
From English - German Ding/FreeDict dictionary ver. 1.9-fd1 : [ freedict:eng-deu ]
iris diaphragm /ˈaɪɹɪs dˈaɪəfɹˌam/
Lamellenblende , Irisblende
Synonym: lamellar diaphragm
see: diaphragm stop, lens stop, diaphragm, stop, diaphragm stops, lens stops, diaphragms, stops, aperture diaphragm, aperture stop, field stop, flare stop, focussed diaphragm, focused diaphragm, Hartmann diaphragm, critical diaphragm, critical aperture, pinhole diaphragm, pinhole, pseudo-lens, natural diaphragm, telecentric stop
From English - German Ding/FreeDict dictionary ver. 1.9-fd1 : [ freedict:eng-deu ]
iris diaphragm /ˈaɪɹɪs dˈaɪəfɹˌam/
Irisblende , Lamelle [photo.]
Note: Optik
Synonyms: leaf, blade
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