What eye safety do you practice when using a green laser pointer to inspect the lens sets of your eyepieces and other optics?
Recently, CN member, “j.gardavsky” gave me this tip: “Scrutinizing the eyepieces: When I get a new-to-me eyepiece, I try with simple means to "look inside". The first thing is to pass a green laser beam,...and then I am looking how the light is scattered on the micro inclusions in glass (the brightened laser beam trace), the internal reflections, diffusion spots on the glass interfaces which indicate a low polish quality, ...With the pinhole imagery, the smallest bubbles in glass and the dust particles become visible in and on the outer lenses.”
It does seem to be a very effective practice, but the reflected intensity from even dust particles is so great, that it gave me pause to question the safety of the practice.
I’ve not been able to find many other references here on CN, about the practice of using a GLP for this purpose. I thought surely the practice was more common, but even a Google search makes it appear that this may be a fairly recent idea. [tg2 -edit to remove linked reference to Cambridge article.]
Edited by grahamtv, 30 June 2020 - 10:05 AM.