200mW 375nm UV Build

[Giannis_TDM]

I'd be interested but don't trust you or anyone anonymous on this forum lol

Can you make a ebay link

Don't worry Philip is who he says he is, He's the guy whom I bought my HeNe from. Communications were swift and it was packed, unlike anything I've seen before. It was exactly as advertised and in top condition.
To give you an idea, I made this DIY stand with some packing material he had on the bottom of the box. Everything was bubble wrapped with packed air on top.

 

[kecked]

A lot of people know me here... and on other forums.
I´m btw. the owner of LIVE Lasersystems.

I’ve bought from him and as advertised. Quick ship. Got 473 from him years back

 

[CurtisOliver]

Phillip, do you have your own thread on here. If not, it may be in your favour to have on like Podo does for Sanwu.

 

[Wakrah]

I have purchased from Phillip in the past too, no problem.

 

[icecruncher]

A lot of people know me here... and on other forums.
I´m btw. the owner of LIVE Lasersystems.

Also purchased from this past summer - no issues

 

[Wakrah]

I would like to buy one, but no answer to my PM to Phillip yet.

 

[Phillip]

Hi! I´m from Austria, so another time...
I need to minimum order 4 diodes to get this price!
BR

 

[CurtisOliver]

So a group buy may be necessary if some want to get hold of these diodes.

 

[Phillip]

375nm USHIO 200mW HL37013MG Diode

Hello! I´m able to offer just a bunch new 375nm 200mW Ushio diodes, if there is any interest. Price : 300€ each net. We need to order minimum 4pcs. The maximum qty. now avaiable up to end this year of this diode is ~15pcs. First come, first serve! BR Phillip

laserpointerforums.com

There are not much avaiable anymore up to round about Oct. 2021.
Now please discuss on my new thread.
BR,
Phillip

 

[ZRaffleticket]

Updated first post with spot comparisons between lenses. LPM in the mail, will update again when it arrives

 

[kecked]

How much less visible is 375 than 405. I do not mean when downshifted just to the eye direct on a non active surface? Thinking of glow n the dark. Would it be less apparent as you draw with it. 405 has a visible dot of purple.

 

[Encap]

How much less visible is 375 than 405. I do not mean when downshifted just to the eye direct on a non active surface? Thinking of glow n the dark. Would it be less apparent as you draw with it. 405 has a visible dot of purple.

According to the relative brightness calculator 405nm is 12X brighter than 375nm https://slickscreen.github.io/laser-tools/brightness/

OP says in post # 1 "The color is not what I expected it to be, having a 355nm to compare to. I expected this to be a dim blue-ish gray, but it was actually a dim violet. If you pointed it at a wall and called it a true 5mW 405nm, I would believe you until I saw the rest of the room glowing."

Curtis Oliver noted in post #2 "Based on your description I can get a very good feel of what a 375nm laser is like. The halo and blurring, and the dim violet. All things I expected at this part of the spectrum. 375nm is the same wavelength that most common uv torches come in"

Gives an idea of visibility at least.

 

[ZRaffleticket]

50mW of 405 is far brighter purple than 200mW 375nm.

Brightness wise it's better off described as material fluorescence + a dim purple halo. There are a lot more active surfaces than you'd expect... on a non active, non reflective surface, 200mW 375nm is about 1/10 as bright as 50mW 405nm.

 

[ZRaffleticket]

Double post; update with LPM results

Micro flex drive set to 380mA

Lens	Power Output (380mA)	Size (33 feet)	Notes
Acrylic	N/A	N/A	Lens melted.
3 Element	161mW	3/4 Inches	Marginal loss in power, evident in brightness. Surprisingly not the best beam shape either.
G2	258mW	1 1/4 Inches	Highest output power, evident in brightness. As expected, worst beam shape.
G3	228mW	5/8 Inches	My preference because of the close focal length; can keep focus adapter flush with host.
G8	243mW	5/8 Inches	Pretty good. Far focal length, not my preference for making handhelds look nice.

 

[kecked]

I was hoping for totally invisible Except for fluorescenc. I guess against strontium aluminate you would not see it.

 

[ZRaffleticket]

There's a slight hint of violet left but you need to be looking for it to really notice, same for other GITD materials. The color mostly gets washed out on any sort of active material.