Generic Aixiz optimal wavelenght?

[random person]

Sorry, newb question. I've seen Aixiz and others sell the generic module such as the one listed here. HighTechDealZ - Aixiz Laser Module - Blank However, there is no wavelength specification? Why is that? Is this good for 405nm - 1000nm?

Also, why is it when it comes to glass lenses that they are wavelength specific if these plastic acrylic ones aren't?

 

[Jufran88]

Well, those regular glass lenses are just regular glass with no AR coating so you can use them with pretty much any wavelength. There are specific glass/acrylic lenses with AR coatings that are specific to a range of wavelengths.

Anti-reflective coating helps reduce improves the beam output efficiency by reducing the amount of light lost or stray light.

Qumefox sells some AR coated acrylics for reds/IR and Aixiz has a whole bunch for sale. Jayrob and a few others sells the G1, G2.

 

[Bionic-Badger]

If they're coated, they're usually coated for red (655nm). The lenses are also plastic.