According to the use of advanced 635nm red laser diode tech, not simply made into a red laser pointer, it as been made into a quite practically used device of a 635nm red laser line generator. It emits pure and bright red laser light directly from an inner 635nm red laser diode. On condition that it gets unique use of a qualified separate crystal lens with wide fan angles and quite strict laser beam stability test up to 24 hours, any time 635nm red laser module gets proper use by skilled users or professionals, it just brings users good direction, easy reaching and long lasting red line projection for all machinery processing works constantly. 
The usual use of a 635nm red laser line generator is always working with different line length and line fineness at different work distances. As a result, comparing with any prior line drawing or printing work, only after its correct use of output power and optic lens fan angle, it is able to bring users a no mistake and no barrier red line projection in continuous use. When 635nm red laser module gets wide fan angles of 10 to 93 degrees, after projection of highly fine and straight red reference line within 0.5 meter to 6 meters lengths, it is able to provide users excellent line positioning results for laser cutting, saw mill, textile garment processing, lumber machine and high tech work etc.
On the basis of a qualified separate crystal lens and special use of a glass window in front of laser beam aperture, this 635nm red laser line generator has just achieved non Gaussian distribution red laser light source emission. Either it is pointing at close or long distance, it still maintains the same line brightness from its middle part towards both ends. Any time 635nm red laser module gets low laser beam divergence of less than 1mrad and special TEm00 laser beam mode, it still gets ultra fine and straight red reference line projection, and makes quite satisfied line positioning result within the maximum work distance of 25 meters and high lighting as well.
According to quite easy connects with 5V, 9V 1000mA DC power supply, within quite long work distance and high lighting working occasion, this separate crystal lens made 635nm red laser line generator makes sure of long lasting red cross line projection, without any effect by laser light decay or dim in constant use. Once it is used for long distance line projection, after the use of a high power red alignment laser up to 50mW, it is a necessity to pay high attention to laser safety issue and wear proper 635nm wavelength preventing laser safety goggles until achieving easy, free and secured line generation effectively.