Iris Diaphragms are optical components in the form of a circular aperture used to constrict and dilate based on your application. It allows for control of the amount of light reaching a detector, for example. OptoSigma offers a wide variety of iris diaphragms at a variety of sizes and apertures. They can be mounting directly onto an optical table, within a cage system, or onto an XZ stage component. We also offer vacuum compatible iris diaphragms. Please contact us for custom iris diaphragm solutions, including manual and motorized options.