The range of a laser pointer may also be understood as the maximum distance from which the spot on the screen can be seen. That kind of range is normally not limited by the beam divergence but by the overall optical power (apart from the wavelength and level of ambient light), since the issue is not the comparatively minor divergence on the way from the 5in1 30mW Green Laser Pointer to the screen, but rather the huge divergence of the scattered light on the way back. Therefore, someone standing next to the illuminated screen would easily see the spot when it is already hardly perceivable from the position of the laser pointer.
Unlike the beams of red or blue lasers, the beam of a Green Star Laser Pointer 10mW is actually visible.Hight power green laser pointers well suited for stargazing because spectators can see the beam going all the way from the laser pointer up to the star at which it is pointing. Users can take their laser pointers in hand, or even attach them to telescopes, in order to align the telescopes with certain stars.