100 Dot Optic for Pointers from Blu-Ray Sled

[joenobody]

Hello All,

While playing around w/ the optics that came from a Blu-Ray sled, I ran across one that generates a line of dots, approx. 100 of them in a straight line starting 90 degrees off the lens. (guess it would be called a single axis defraction grating?)

It fits nicely in a WL cap set which screws nicely to my WL Fusion. The effects are awesome, especially in smoke/fog filled rooms, and at night in the rain/fog, it is incredable. (Falling snow was quite impressive as well-hope to get some pics of that soon-pray for snow in PA-USA!)

There is also a small chip of glass mounted behind another lens in there that does the same thing, but not mountable in a cap set, but could be set in place over the apature exit for the same effect for larger headed lasers and for those who don't have a cap set.

Check out the pics! I will update pics w/ rain-snow-fog at night as soon as we have some of those conditions here again.
ENJOY!

Regards, Joe
Joenobody

 

[joenobody]

Pic-2

 

[joenobody]

(Pic 3 had some help from my youngest twirling a few pointers at the same time)

 

[joenobody]

Pic 4 reflecting off one of my fishtanks, pretty wierd!

 

[joenobody]

and another

 

[joenobody]

Minimal fog from machine added. In the fog outside, you can clearly see nearly every line to every dot.
Will post new fog/snow, other neat pics w/ this optic as it becomes available.
Hope you like them!
Rip into that B/R sled and grab these babies from out of there.
Have fun!

 

[Switch]

Cool! I wonder what it's used for in the blu-ray assembly.. :-/ To bad CD or DVD drives don't have any usable optics..

 

[roSSco]

 

[joenobody]

Cool!  I wonder what it's used for in the blu-ray assembly.. :-/ To bad CD or DVD drives don't have any usable optics..

Thanks!,
[smiley=thumbsup.gif]
I know I have seen a layout and explanation of all the optics and what they do and so forth, somewhere, maybe here on LPF??? I think it was at Sam's Laser Facts. But very interesting to read, I need to go read it again myself! (It was late when I ran across it) If I find it, I will post again wth where it is for sure, unless you/someone beat me to it???
;D
Thanks,
Joe

 

[JECS]

now hurry up and use it as a spirograph and take more pictures

 

[glona]

hay i got one of thaer from a dvd/rw il sell it if nay one wonts it

 

[CL_]

i got one that came with a cheap red laser

 

[BlueFusion]

you only just found out about all these...
They are in front of any visible diode... I have a bajillion out of various sleds, bluray and dvd drives. Theyre usually glued to the red / blue diode or attached shortly in front of it. For some reason they aren't in CD drives.
My 115D drives yielded the same thing... but in 2 axes! Starfield grating!

 

[BlueFusion]

By the way. It's to generate enough different dots to go to various places inside the sled