... glass lens, driver circuit and housing Better line quality DM650L5 red line modulated laser module Characteriscics:High-quality laser ... diode,optical glass lens, driver circuit and housingBetter line quality,high frequency modulatedHigh reliability, high stability, long ... 10*30mm,12*40mm,12*45mm,14*45mm,16*65mmFocus: fixed / adjustablematerial of module housing : cooper / aluminumSpan of Life: ...