colinbm Posted October 3, 2020 Share Posted October 3, 2020 I have a mystery UV narrow band dichroic filter, that is only coated silver mirror like on one side ?I could have bought this filter up to ten years ago, but I don't remember & the labeling has disappeared.It is a very narrow band of about 360-370nm.Can anybody tell me where I got it from please ? PS, I am wondering if it might be one of Mr Johnson's, Omega Optics offerings ? Link to comment
Andy Perrin Posted October 4, 2020 Share Posted October 4, 2020 Especially if it’s 25 mm then it’s probably Omega. They make other sizes but a lot of 25mm. Link to comment
colinbm Posted October 4, 2020 Author Share Posted October 4, 2020 Thanks Andy, it is 40mm dia x 3mm thick.I can't see daylight through it.... Link to comment
Andy Perrin Posted October 4, 2020 Share Posted October 4, 2020 You could scan it with your spectrometer thingy? Link to comment
colinbm Posted October 4, 2020 Author Share Posted October 4, 2020 Yes it us a very narrow band, would you like to see it ? Link to comment
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