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    Optics for Osram SPL PL90_3 diode ???

    hello, i need optics for focusing an Osram SPL PL90_3 laser diode, without diverging at long distances. it is a 905nm laser with 200x10 micrometer laser aperture and 9x25 grad. divergences (you can check datasheet for more specifications) what kind of optics should i use to collimate the beam...


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