Jim, Glad the link helps and thanks for telling me about it!
Singh-Ray makes a filter designed by an acquaintance of mine, Tony Sweet, so there's a small personal connection with the company. Best Regards, Bernie Kubiak -------------- Original message ---------------------- From: "James L. Sims" <[EMAIL PROTECTED]> > Thanks, Bernie. Years ago I was developing a device for evaluating and > collimating lenses and a mutual friend, Leon Kenamer, introduced me to > Dr. Singh. I had him make three narrow bandwidth filters (5 to 10 > nanometer bandwidth) for my autocollimator. He also made an infrared > filter for my light source. The lamp would burn the end of a Q-tip at > one inch from the bulb. With his filter placed directly in front of the > lamp, I could hold my hand at that one inch distance from the bulb and > felt only mild warmth. His narrow bandwidth filters also performed > perfectly. Needless to say, I was very impressed with his work. I > discussed UV filters with him and he was making them at that time. He > did say that they were costly to make and was not sure about sales. > > Thanks again for the link! I lost track of him after Leon passed away. > > Jim > > [EMAIL PROTECTED] wrote: > > Singh Ray is still around: www.singh-ray.com/index.html but I don't see a > > UV > filter in their catalog. > > > > Bernie > > -------------- Original message ---------------------- > > From: "James L. Sims" <[EMAIL PROTECTED]> > > > >> Most UV filters are just glass, with IR coatings - glass will filter > >> some UV, I seem to recall less than 20%. Singh Ray did make a real UV > >> filter but it wasn't cheap and I don't know if he is still in business. > >> > >> Jim > >> > >> > > > > > > > > > > > > -------------------------------------------------------------------------------- > -------- > Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe > filmscanners' > or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or > body ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
