Laser line generator lenses get selectable glass cylindrical lens or separate crystal lens, which always getting wide range laser lens degree from 10 degree to 110 degree. On basis of its super nice linear quality, high straightness and high fineness, alignment laser line is mainly workable for those of industrial inspection and mechanical processing works efficiently. A qualified laser line generator lens is extremely important for users to get the clearest and the most precise line positioning on various working surfaces.