• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

Red vs green lasers

Status
Not open for further replies.
J

jtvang125

Diamond Member
Take a laser of each color and move it around quickly. Why does the red laser make a solid line while the green creates more of a dotted pattern?
 
does the dot distance vary with sweep speed? could be the driver IC. i think most cheap red laser pointers are directly driven with a linear regulator. greens are made with a much higher power IR diode probably driven with a switchmode power supply.

edit:

http://repairfaq.ece.drexel.edu/sam/laserdio.htm

Battery life of any green pointer is likely to be much worse than that of the simpler red variety though for actual uses as a *pointer* (what a concept!), it probably doesn't matter all that much. The quasi-CW and pulsed variety should be somewhat better in this regard. (The "spec" sheet that comes with the Edmund Scientific L54-101 green laser pointer claims a 3 to 4 hour battery life from a CR2 lithium cell though I'm not sure I believe it.) There is no functional advantage to the pulsed system (it's actually less desirable since the spot breaks up into dots when swept over a screen) but it can be made much more efficient reducing the need for thermal management and extending battery life at the same perceived brightness for these current hogs.
Click to expand...
 
Last edited:
Hello,
Because the red leaser contains strong light molecule and in the green laser the power of light molecule bit laser then red. So might be that is radiational problem...
 
Yeah it must be a cheapo. I know someone who has a nice green one. It costed around $100. It doesnt blink. And damn does it go far.
 
webmaster1 said:
Hello,
Because the red leaser contains strong light molecule and in the green laser the power of light molecule bit laser then red. So might be that is radiational problem...
Click to expand...

I'm sure that English isn't your first language, so I will not be too harsh, but...

This post is difficult to read. 🙂
 
Status
Not open for further replies.

TRENDING THREADS

Back
Top