I haven't found the lenses yet although supposedly https://www.thorlabs.com/ https://www.thorlabs.com/ has them and someone else recommended these guys to me fo

I haven't found the lenses yet although supposedly https://www.thorlabs.com/ https://www.thorlabs.com/ has them and someone else recommended these guys to me for finding more high quality diffraction gratings than the 'rave goggles' quality you can find on amazon https://www.edmundoptics.com/ https://www.edmundoptics.com/