There are lot, depending on your requirements. Anyway you can try: \;X7DK2 *U[yeE]. 1, Refractive: an achromatic as positive + plano-convex as negative; rL{R=0 OR 1|MRXK 2, Reflective: two parabolic mirrors; 5daq}hsQs 7=CkZ&(? Both of them affer nice spherical aberration performance. z%wh|q 4nsJZo#S/ Reminder: compute the laser beam density, ensure you have enough strong optical coating. ?R)]D:` R@o&c%K" Good luck.
Hi, mJSfn"b}K Hb)FeGsd). The following is a link of technical data of optical adhesives, hope it be helpful: 'UX.Q7W o`bc/3! http://www.lienhe.com.cn/uvadh/NOA60.htm rW{!8FhI
~non_pJ Double check from your lens vendor waht type of adhesive they use for your cemented doublet. EgjJywNhd2 I!sT=w8V It is OK to use the spaced doublet design as a backup, if so, please pay a lot attention on the opto-mechanical design and assembling. VfoWPyWD# y{ur'**l Again, good luck.