Apertures are used to limit the amount of light that is exposed to imaging sensors or photodetectors for a range of laser or imaging applications. Apertures are optical components comprised of irises, pinholes, or slits designed to block certain portions of a light source from reaching photodetectors in order to prevent oversaturation or damage. Apertures may be controlled by expanding or contracting the diameter or width of the opening to fit multiple applications or environments, making Apertures versatile light blocking choice.