Several different types of valves are available in the powder processing industry. One in particular has proven itself time and again as a strong, reliable flow control solution 鈥 the iris diaphragm valve (IDV). The revolutionary design of the IDV is the creative invention fo two rothers ...
iris diaphragm lever the iris diaphragm is a shutter within the condenser that can be controlled by a lever to adjust the amount of light passing through the condenser; the lever can be moved to close the diaphragm and improve contrast; if your field of view is too dark, you can open the...
iris - diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening iris diaphragm diaphragm, stop - a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically" Based on Word...
5.a plate with a hole in the center or a ring that is placed on the axis of an optical instrument, as a camera, and that controls the amount of light entering the instrument. v.t. 6.to furnish with a diaphragm. [1350–1400; < Late Latindiaphragma< Greekdiáphragmathe diaphragm, mi...
An iris diaphragm includes at least one lens shutter to adjust the size of an aperture that incident light passes through according to movement of the at least one lens shutter. At least one ND filter is installed to move independently of the lens shutter to reduce the amount of incident lig...
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aThe first action of Preprocessing is to determine iris edges include inner (with pupil) and outer (with sclera) edges.Iris can be introduced as follows:a diaphragm with rich texture encircling a circular region (pupil). Both the inner boundary and the outer boundary of a typical iris can ap...
(2) For optical instrumentsseeIRIS. (3) In turbines, a diaphragm is a ring partition to which the vanes of the guiding unit are secured. The diaphragms are removable along the horizontal. Diaphragms that operate at temperatures up to 250° C are made from SCh 18–36, SCh 21–40, and ...
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Aperture. The opening of the diaphragm within a lens that light passes through on its way into a camera. This is one of the fundamental settings for controlling exposure and a component of the Exposure Triangle. Usually measured and expressed as a number known as the f-number of f-stop. ...