iris diaphragm Definition

iris, convex lens, galvanometer, positionable, photomultipliers, collimator, tailstock, variable resistor, confocal, mosaicking, monochromator, pyrometer, transmissive, pentaprism, aspheric, collinear, collimating, capsulotomy, galvo, interocular, gimbaled, arcsecond, photoconductive, pulser, helical gear, spherical aberration, diffractive, aperture, pentile, photomultiplier, illuminance, chamfer, midplane, electron optics, demultiplexer, bimetal, phototransistor, rotatable, nosepiece, photolithographic, electret, coplanar, photometer, microbalance, toric lens, rotary actuator, frustum, knurled, photodetector, cuvette, calorimetric, josephson junction, retroreflector, ophthalmoscope, voltage divider, nematic, insertable, bevelled, enlarger, eyepiece, microswitch, azimuthal, trunnion, bevel gear, ellipsoidal, bypass capacitor, subminiature, image intensifier, piezoelectric crystal, serration, cermet, bistable, photocell, colorimetry, stroboscope, refractor, thoracoscope, goniometer, strain gage, bolometer, dichroic, aspherical, needlenose pliers, microampere, absorption coefficient, thermoform, detents, etalon, diffraction grating, hexapod, fresnel lens, mullion, parabolic reflector, fiducial, lavalier, ablates, backscattering, diopter, ammeter, suprarenal,