Whenever line aligning work is processing at long work distance, it is not easy to reach with any manual or mechanical line aligning tool. After constant technical innovation of 445nm blue laser diode tech and the best quality separate crystal lens, it is being made into the most practically used device of 445nm blue laser line generator. On condition that it makes good use of constant power source supply and special use of a thermal emitting system, it just enables the most convenient installation and the easiest reaching blue line projection at long work distance. According to the use of a qualified separate crystal lens, after up to 24 hours aging preventing and beam stability tests, this 445nm 100mW blue laser line generator is always working with high uniform and high fineness blue reference line projection from beam aperture. Even though it is making long lasting line alignment, it still gets even better performance than formal glass or plastic coated lens. On condition that users are getting basic learning of required blue line length, line fineness and work distance, only after getting correct recommendation of output power and optic lens degree, this blue line laser module is able to make highly precise line generation within the longest work distance of 25 meters. In various precise line aligning work fields, after easy use of an external AC/DC adapter, without spending extra time on alkaline battery change, this 445nm blue laser line generator always makes quick response and good direction blue reference line projection from laser beam aperture. It also gets special use of extending electric wires, within the maximum work distance of 3 meters, this compact size tube made blue laser module just allows easy installation, and quick response blue reference line projection onto a lot of raw material surfaces. It is also keeping work with highly clear and stable blue line alignment under special occasion of overheating and over current impact as well. Whatever kind of working surface it is pointing, with the assistance of a laser alignment mounting bracket, this compact size tube made 445nm blue laser line generator always makes easy installation, and quick response blue line generation in a lot of application fields. It gets easy screw of adjustable focus optic lens, after high speed blue laser light focusing, this blue alignment laser just gets efficient conversion of highly fine and clear blue line alignment at long work distance. Only if users are paying high attention to thermal energy hurt to human eyes and wearing correct 445nm wavelength preventing laser safety goggles, it just makes easy and free use in all application fields perfectly.