Merged 445nm Pictures and Video Thread

[jayrob]

Re: 445nm "sled" pics

550mA's...

Are you using a Micro Boost driver? Or a V5 FlexDrive?

Thanks for sharing!

 

[SpyderFire]

Re: 445nm "sled" pics

Daguin - 23 more to go :eg:

Jayrob - Flexdrive V5

 

[jayrob]

Re: 445nm "sled" pics

Daguin - 23 more to go

Jayrob - Flexdrive V5

Your beam shot sure is awesome... (thanks for verifying that this beam shot is using my 405-G-1!)

Just to post the information you gave me vie PM:

550mA's...

* AixiZ acrylic: 475mW's
* 405-G-1: 600mW's

That's a 26% increase in power vs AixiZ acrylic...




Hey if you haven't tried the new Micro Boost Drive, that's the one to get for this...

Just jumper it to the 390 to 750 range, and the pot will adjust very nicely. It' is a much nicer pot.

This is Boost only. So it's perfect for a single Li-Ion battery and a diode over 4.2 volts of forward voltage as long as the diode case is isolated. And I believe these diodes are that way. (like blu-ray diodes)

Micro Boost Drive documentation:
http://hacylon.case.edu/ebay/laser_diode/Micro Boost Drive V1 manual.pdf

 

[pullbangdead]

Re: 445nm "sled" pics

The lobes on the sides of the main spot are what makes it multimode..

LOL. Thank you, because at first I was like :banghead:, but then I was like :beer: once you posted.

 

[SpyderFire]

Re: 445nm "sled" pics

Thanks Jayrob , I will need to try one of those drivers on my next build, I wonder how much these diodes can handle.

 

[jayrob]

Re: 445nm "sled" pics

There has already been talk that they may be 1 Watt diodes...

But hey even if we're talking 300mW's or 400mW's of blue, that is incredible!

You will want a decent heatsink, but just as important (IMO), is a good supply for the current draw with a Micro Boost driver for this one.

I'm planning on using my 18650 kit with copper heatsink/Micro Boost driver...

 

[SpyderFire]

Re: 445nm "sled" pics

im using a 14500 now , but i tried hooking it up to a cr2 and it started flickering. I Think it was drawing too much from the little battery. The cr123 seems to handle it ok.

These are all rechargeable versions of course.

 

[jayrob]

Re: 445nm "sled" pics

I'll be measuring battery current draw with the 18650/Micro Boost combo...

Can you measure the battery current draw with your 14500/V5 FlexDrive set up?

If you check it, use a fully charged battery, and let us know the current setting of the driver as well...

 

[SpyderFire]

Re: 445nm "sled" pics

The driver is set to ~550mA for sure. How do i test the current draw when using a flex?

 

[jayrob]

Re: 445nm "sled" pics

That's the easy part...

Your just measuring 'battery current draw'. So with a fully charged battery, leave the tail cap/switch off of the laser. And then you will measure between the negative end of the battery (negative prong), and the metal host. (positive prong)

Or with a case positive build, you will measure from the battery positive, to the host...

Have your DMM positive lead plugged into the 10 Amp Plug if you have a choice, and set to measure mA's...

Of course, watch your eyes. Because obviously the laser will come on during your measurement...

It's interesting when measuring battery current draw with a Boost Driver...

As the voltage of your battery drops, the current draw gets higher and higher. Because the driver is using current to boost the voltage that the diode is asking for.

This is why I said an 18650 will be wanted. Especially if we're going to be pushing these diodes...

So make sure you test with a fully charged battery. Because the current draw will most likely be much different with even a slightly discharged battery. (unless the diode is only asking for 4 volts or so)

 

[SpyderFire]

Re: 445nm "sled" pics

For a 1W / 1A system the 18650 is a definite must. Someone over at PhotonLexicon has their 445nm diode for 45min @ 1W. Crazzy!!

 

[jayrob]

Re: 445nm "sled" pics

I read that in another post but did not see a link??

Do you have the link?

These are going to be so sweet...

I'm sure I'll also have to have a 3 or 400mW polished SS CR2 build as well!

 

[SpyderFire]

Re: 445nm "sled" pics

Yup...

445 experiments


and that graph looks very stable , not much deviation.

 

[jayrob]

Re: 445nm "sled" pics

Unbelievable...

Thanks for the link!

That was an e-bay diode. So hopefully these are the same or better...

 

[SpyderFire]

Re: 445nm "sled" pics

no problem, I may need to get a closer look at your 18650 host with a copper heatsink for when i push one of these really hard.

Maybe we can work out a trade?

 

[jayrob]

Re: 445nm "sled" pics

Absolutely!

Here's my 18650 kit with pictures and options:
http://laserpointerforums.com/f39/fs-18650-build-kit-easy-assembly-blu-ray-red-43857.html

Send me a PM for my shipping and we can work out a trade. Can you send the diode and stock lens tomorrow! :crackup: