This reducing aperture screws into the front end of our OPM150 free beam heads and P10 and P20 series of integrating spheres. It may also be fitted into any of our OPM150 filter mounts.
This aperture is used to limit the input aperture of the detector to 7mm. This is the required standard aperture for laser safety measurements according to ANSI Z136.1.
The 7mm aperture is for use only with detectors having an input aperture greater than 7mm.
The adapter is fitted by use of the adapter mounting tool (20.430.00018).