Chartreuse Coruscation
Well....yet another new Hand Held project..this one is for my collection.....in which I desire to generate a combined 3.0 W output. I will be using the bounce mirror / Dichroic Mirror set up as was used on the Cyan Cannon Build. I plan on beam correcting via a 6X Cylindrical lens set. As before, I must determine if the optics correction can share a common set of 6X
.or if two (2) sets of Cylindrical Optics will be demanded.
I propose to use the N520 Green LD combined with the VSHIO HL63283HD Red LD.
The combining of a Green and Red LD...is old news. Been done by Jayrob back in 2014...See
http://laserpointerforums.com/f40/ye...mag-90107.html . BUT...this unit will employ the High PO - Multimode Green and the new 63283HD Red LD...and add corrective optics SO
we will have three (3) new attributes contained within this build
1) High power adjustable colour mixing from Red ===> Green
2) Corrective Cylindrical optics for Beam shaping
3) The New 63283HD Red LD
Note: As of this time, although I would like to add a Linos 10X Beam expander
.I am thinking this may not be possible. The combined Red/Green beam path axis is NOT in alignment with the unit main centre axis. As of this writing, I have not come up with a work-around !
The colour line I want to hit is likely 550 to 560 nm....and it is called "Chartreuse Green" ! How fortunate that our Peak Daylight sensitivity for cones and Rods lies at 555nm. See the attached Wiki link outlining this colour !
For now, this build will be based upon the " Cyan Cannon" HH build platform. Lessons learned / design improvements gained from the Cyan Cannon build be integrated. This build will incorporate the new VSHIO HL63283HD Red LD. Beam correction will be a necessary...as will be matching the divergence of these two (2) LD's.
I will start with a Optical Test Bed set up to establish just what can be accomplished and the resultant colour output of the two (2) mixed beams. Once we establish that the desired colour output can be achieved....then I will go on to achieving parity for Far field divergence matching and minimal divergence for both beams.
The current plan is to incorporate a dual set of Opt C-lenses; One set for the Red LD and one set for the Green LD. I project that this double set of Cylindrical lenses may be demanded to ensure the ability of matching the divergence of these two diodes. Not sure
maybe we can do it with a shared single set of Cylindrical optics.
After this level is attained, then......I will finalize the actual Hand Held design details...and start the build.
As guide for any design
. Two (2) basic things are desirable;
1) Ability to adjust all optics
2) Ease of optical alignment
Unfortunately
. directly linked to the ability to adjust
comes the ability to become misaligned !! If something is mechanically inserted into some channel geometry
with no ability to be adjusted
well
it does not have the potential for future misalignment
.but then
.how does one achieve the optimal alignment in the first place ???
So, there lies the basic compromise
.It can be and has been done. MANY lessons were learned with the Cyan Cannon build
.and will surly be applied to the Chartuse Corusication build.
The control plan for this set-up will be to run the Red LD at full PO capacity and current vary the Green LD to modulate the Green input only. By mixing the two lines of Green 520nm and Red 635nm we should be able to generate a combined beam of Green-Yellow display...Chartreuse Green.
SO...Can we do it ??....Sure...we can !!
I do not know of another purposeful attempt to use a corrected LD combination approach to achieve this perceived particular color...in the Hand Held format.
For now...the plan is to use a 2D cell Modified Maglite host
as was used in the Cyan Cannon build. Two (2) 26650 or two (2) 32250 LiPo cells will drive two separate drivers. LiPo Cell output will be approx. 8.4 VDC, One of the drivers will be the Worsee 8A Black Buck and this is the driver that will Modulate the Green ND 520 Diode.
Not sure on the shroud/canopy arrangement....likely the standard full Acrylic canopy ????
This is a large build....but then...the optics design demands this. It will also not be a light weight unit....so...it can always be used as a Nutcracker in a pinch !! Hahaha
Stay tuned in the coming months to see how this unfolds !!
I just cannot and will not wait...until a High Power / 555nm LD pops up on the market !! Forget That !!! Will the beams be a totally PERFECT MATCH ???? NO...So what !!! We will get CLOSE !!
See this link:
https://en.wikipedia.org/wiki/Chartreuse_(color)
CDBEAM
