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Well the beam quality is pretty poor, lots of Airy rings and diffraction artefacts, it's one of the lenses with the most splash around. It may well be that the extra few percent output the lens gives, is largely in the splash around it, and thus useless. You are invited to do a better test and...

Thanks jayrob, for the excellent lenses and prompt int'l delivery! I performed various tests and indeed the beam quality is much better as for the Lens-27. I used my own mounts for them. Some results are shown here . Regards, RX

So you are selling the bare lenses without telling their diameter etc? I wonder whoever wants to buy something like that....

Well normally any company is glad if their data sheets are copied, because it drives up sales of their products. So if you are not willing to tell the diameter and focal length of your lens, then I won't buy it and use it in the laser heads I offer, it is as simple as that.

Hello, I am interested in this lens... but I'd like to know technical details, in particular what the focal length is, the NA value and the diameter....can you point to a data sheet? The point is that the lens must be well matched to the laser diode; I had complaints about the beam quality of...