pinhole Definition

collimator, pinhole camera, lens, aperture, viewfinder, lense, fisheye, eyehole, newtonian telescope, chromatic aberration, enlarger, convex lens, camera lens, camera obscura, eyepiece, magnifications, keyhole, laparoscope, photogram, refractor, pentaprism, vignetting, incision, iris diaphragm, retroreflector, prisms, plexiglas, spectroscope, splashback, bleb, collimation, coronagraph, auditory canal, telescope, cryostat, pyrometer, speculum, perforations, vitreous humor, ophthalmoscope, opacities, ostia, borescope, loupe, fundus, stereographic, endoscope, sigmoidoscope, astrophotography, diverticular, polyhedron, optical device, septum, cuvette, glassless, laryngoscope, orifice, opacification, parabolic mirror, superior vena cava, otoscope, atrial septal defect, flashgun, lunette, image intensifier, embroidery hoop, cavity, photometer, underpainting, photopolymer, kirlian, darkroom, crystalline lens, pellicle, penlight, pyrography, fluorescein, cautery, toroid, slits, semitransparent, protrusion, monochromator, scintillator, nosepiece, diaphragm, endotracheal tube, punctum, reflector, stroboscope, ambrotype, trapezium, stipple, conjunctiva, lesion, ileocecal valve, needlenose pliers, venturi, nozzle, cyanotype,