Recent content by onspey

Thanks very much, alanbrito! At least now I know that the theoretical approach really is impractical. My project has been delayed somewhat, but I will try to go the empirical route. The problem will be to find an eye-save solution that still produces dots with sufficient visibility for daylight...

Yes, that's what my intuition tells me too. But I think the radius of the source beam would also be a factor. The problem is, all I could find after a couple of hours of research, is the Fraunhöfer diffraction formula (http://en.wikipedia.org/wiki/Fraunhofer_diffraction), which can be used to...

No, that is not my intention at all. I just thought that there might be existing knowledge I could use - if not formalized, then at least empirical. And of course am I always doing extensive google searches before bothering anybody on a user board. The problem is, that this is a fairly specific...

Thanks HIMNL9! I'm aware that the intensity of the interference peaks will decrease with every #order. But there has to be a way to quantify the intensity range from #0 to #N so that it becomes possible to estimate the power required for the source. I would rather like to do this on paper than...

Thanks for the quick reply, lasersbee! So the intensity of the projected dots is NOT uniform, but diminishes with incresing #order. Is that what you were saying? I could live with that as long as all dots are bright enough as well as eye-save. What I'm looking for, is a more formal...

Here's a question I have so far not been able to find an answer to: How does a N x N dot-matrix diffraction grating affect the radius and intensity of the individual dots relative to the beam of the laser diode? Which characteristics of grating and laser module are relevant factors? What I...