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In my recent ventures to make a high transmission beam expander for 445, I ended up testing many different lens configurations. While on this path, I revisited the PHR, just to try something. To my surprise, the results were not bad at all, my only issue was that the lenses in the PHR sled are...

The only problem with visible light is you have a harder time filtering out 'noise'. With IR or NIR, you can add a filter to the receiver. Perhaps a visible used to aim but not to activate... I suggested to the OP a 780nm from a CD reader as they for the most part, are single mode and have good...

Appreciate the comments.. I owed the OP 600.CDN in total, months back I sent 210. and this past week 410. CDN. The extra 20.$ was to cover any fees. I didnt want to fall short So you're saying another member here owes thousands!!?? crazy.... None the less, I am happy to be getting back on my...

There are a few ways to knife edge. Most commonly the diodes are side by side with 2 mirrors, but this is not necessary. A single mirror used to reflect the 2nd beam and the other beam straight through similar to what you would do combining a red and green, minus the dichro of course. If you...

The key to this idea is not the power, but the ability of the collimated beam to cover far more distance. I have thought of this in the past but just as an idea. I would start by measuring the voltage and current of the existing LED then use a NIR 780nm diode from a CD reader mounted with an...

Not sure where to begin, but will keep this short. I have been away from the forum for some time and with reasons which are personal and will remain with me. I can only apologize to reginak for the duration of time which passed before I was able to refund $ owed. I sent the remaining balance to...

That extra bond wire is not part of the anode nor cathode, and serves no additional function for current delivery. Now if there were 2 additional routed to + / - points of the die, you could safely assume that more current could be delivered. Though in this case its not. Also, as PBD pointed...

You can always try balancing it out with resistors.. I have used the same P/S thats meant for a 5mW on tubes as low as .5mW. I have never noticed any bad affect other than some extra heat, and if you dump some power with resistors, there is less to worry about. I dont think a 15mW P/S used on...

Dont forget that in some cases they are 28 vdc. Not sure how many are floating around in the USA, but here in Canada, 28vdc was the norm for the barcode tabletop scanner He/Ne's. Talk about a PITA to find a suitable transformer back in the day, long before the interwebz :D I still have a 28v...

Id go with a couple of PHR803t diodes (405nm) simply because they are the lowest diverging vs cost. An LM317 driver set to 50mA or less would work fine. If you want to be safe, I would keep them down to 5mW or less. If interested I can setup 2 modules for you, and test at what current will...

OMG, that is one WOMAN you do NOT mess with :scared: Bet shes doing all that work after hubby got lippy and she belted him one. Now the poor man is laid up recovering for the next few months :banned:

Thanks for the kind words.. Most that have had any dealings with me know that for the most part things are done timely, and on occasion there are delays. Usually when life gets too crazy.. All that means is the odd delay from time to time and with custom stuff, its just the nature of the beast...

Just to be clear, you inquired about both variable control which you had read about in one of my posts, as well as the burning cap for the laser, and it not being a short focal point: The Original 'burning cap' I made for these were only good for a few inches as the focus was fixed, and there...

Re: Concept: 4W corrected 445nm handheld I had never used a mill, but even back in high school, I took to the lathe like second nature.. I can say the same of the mill.. Though like anything, time and patience will get you far. One of the hardest things is stay 10 steps ahead in your...

Re: Concept: 4W corrected 445nm handheld Good, always leave yourself room.. With metal you can always take away, but if there is not enough..... :gun: It doesnt cost much for entry level tools, and its a great hobby. Not to mention when you need parts for anything, you can make most with...

Re: Concept: 4W corrected 445nm handheld Well loss depends on the mirror's used and the ease of aligning only one opposed to 2. Also drilling out that 2nd hole off center lengthwise allows more room for error. That 2nd hole will most likely be done on a mill, and the longer it is, the harder...

This was a custom dual diode build which the buyer requested more custom options. The initial build took much longer while experimenting with a linear control driver for both diodes, as well as additional expansion optics with minimal loss. These lasers already take so much time to make, and...

Just saw this post, all I can say is the second I have the refund to give, it will be sent. I just finished listing on ebay, and am trying for sales.. I cannot send what I do not have. All I can say is im working on this..

Re: Concept: 4W corrected 445nm handheld Id try and eliminate one of those mirrors by repositioning the diode, it will save you some loss.. Also you may want to incorporate brass into the bench for the optics or variations in temp will affect alignment. It may sound odd that a few deg can...

Article says 21hrs deliberation, but who cares :D Now he gets to look forward to being on the receiving end of this. I saw a clip the other day of him walking into court smiling like it was for a traffic ticket. Cant wait for the sentencing for this POS :gun: