When line alignment is processing under moderate brightness working occasions, none of manual line printing device can be comparable with 405nm 50mW violet laser line generator. It is not projecting quite bright laser light as other visible laser devices. Owing to its high power up to 50mW and special use of inner metal heat sink cooling system, this direct diode emission violet laser module is only adopting quite small size tube diameter of 16mm and achieving highly stable violet laser line projection in continuous use. This 405nm 50mW violet laser line generator applies qualified separate crystal lens. It is assuring non Gaussian distribution violet laser beam, and highly fine violet line in distance. It keeps work with high brightness violet line projection from middle part towards both ends, also getting no laser light decay in continuous use. Only if violet laser module selects correct fan angle separate crystal lens, violet line laser assures the most precise line projection in distance effectively. Technical data: Item: Berlinlasers 405nm 50mW violet laser line generator Laser class: IIIb Fan angles: 10-93 degree separate crystal lens Adjustable focus: yes Power source: 9V 1000mA DC power supply Application: industrial laser line alignment, lab experiment, spectrum and biomedical etc http://www.berlinlasers.com/405nm-separtated-crystal-lens-violet-laser-line-generator