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Khatod
Rob's Mk3 Light (front)
Triple Khatod lens is centre and 10x10mm square Carlco (16 degree) sides.
Note the Khatod lens is 6mm higher than the others so the centre LEDs are set back by that much. Quiet a tricky build.
They are fixed to the 20x20x3mm aluminium holder with Arctic Alumina thermal epoxy.
Rob's Mk3 Light
Mk3 light: 6 x Cree XPE driven at 700mA from a TaskLED MaxFlex. Khatod triple lens + 3 x Carlco 16 degree at the sides.
Fitted to 20x20x3mm aluminium then secured inside 75x25x3mm box section (75mm long so it's square). Covered in LED heat sinks from Jaycar.
Front cover from huge lump of plexiglass I found on the street. Oh, did I mention the box section was also a freebie offcut I found dumped last year and it's driven from an old 4000mAh, 10.8v laptop battery (also free)? Cable is recycled from Mk1.
Gluing Optics
Gluing the optics to LED holder. Note how runny this epoxy is - I don't like it at all, but thankfully it did the job.
The grey thing on top is the perspex lens cover placed there to make sure the centre Khatod lenses stay square.
Emitter Holder
How the emitters will fit on their holder. The whole thing will sink further inside the aluminium box when done but have left it sticking out to show the various depths required.
You can see here that using the square MCPCB with Khatod triple probably wouldn't work.
Carlco + Khatod Lenses
Triple Khatod right, 2 x 10x10mm Carlco left. In the final light there will be another 10x10mm Carlco on the far right (out of shot).
The Carlco lenses are 16 degree, Khatod are 10 degree.
Carlco + Khatod Height
This shot was to check the height of a 10x10mm Carlco + square XPE (Cree) compared to triple Khatod lens ontop round XPE.
Think the longer legs on the Khatod need filling a little, but the 2x3mm alu (yes - those chunks of aluminium under the emitter/lens combo in the left are 3mm thick) is just about perfect, or will be when they get a little glue between them.