Safety glass and goggles

[gnr]

Hi guys

I have worked on a laser engraver project for a long time now. It uses a 1.5w 445nm laser diode which I have run on only 700mA (need better driver). We are now currently rebuilding the whole laser engraver and it´s time to fix up the laser system as well.

If interested you can see the old engraver here. And here is the first prototype of the XY-table. Note that we are not using this design today, only the frame.

Earlier the "safety" of the engraver was that we had a "start-delay": We started the engraver and got out of the room before the laser turned on. Now it`s time to fix that:P.


Long story short:

1.
I need safety goggles that is suitable for 445nm (Primary). It would be nice if it could work with 405nm as well. And it seems like it´s a jungle out there ?

Important for me:
* It`s safe
* Works with the above wavelengths
* Could trust them

Could you guys point me in a direction of brand, goggles etc?
I have tried to research myself, but I don`t now what I can trust on. What about these or these (Is it bullshit? 10 bucks for OD5+?) or these (Only OD 4+ is it enough ?)


2.
We are building the new engraver like a box (Completely sealed for light with interlock on doors). But we want a window on top of it (So you can see it engrave without goggles). In the future we will also showcase the engraver machine at a trade show (Maker Faire preview here in Norway) so SAFTY is important!

Who can I order a safety glass from ? Witch type should I choose ? What OD do I need?

What about this one (DBW125) or what about Lasermet? (Many different types/models) or Laser safety industries (What is suited my use? Acylic / Glass etc)





Any help will be greatly appreciated

[JJWMACHINECO]

I have been using these laser safety glasses and they have been working very good for me with my 1W 445nm laser engraver. http://www.amazon.com/HDE%C2%AE-Lase...safety+glasses

Also if McMaster Carr will ship to you, here are some light filters. I have tested the the red one for my 445nm and it blocks the blue light as good as the glasses I have. I plan on laminating the film in between two pieces of glass or Plexiglas to insert into a door on my laser engraver which I plan on building a full enclosure for it. http://www.mcmaster.com/#light-filters/=nvlbxn

I use drlava's Flexmod P3 analog modulated driver on mine which allows me to engrave Shades of Grey by varying the lasers intensity instead of using TTL (on/off).

[SaltyRobot]

This sparks a question I have been having for awhile. What pair of glasses do people wear when working on an RGB projector. Seems like most glasses only block two out of the three wavelengths. Is there some expensive pair of glasses that block all common visible laser wavelengths? Or do most the people just not wear anything.

[dsli_jon]

...What pair of glasses do people wear when working on an RGB projector. ...

http://www.phillips-safety.com/laser...g-and-c02.html ...and, no, they're not 'cheap', sorry to-say.. but, then-again, neither are glass-eyeballs.. Though, I did pick up a pair on eBay for about $150. less than-list..

Or, these: http://www.phillips-safety.com/laser...nt-filter.html ..for 'general use', and you can 'augment' for 445, with these: http://www.ebay.com/itm/Pro-Rider-IR...1/271249079017

- Full-on 'review' / details / pros/cons / fair-warnings, etc, here: http://www.photonlexicon.com/forums/...ighlight=rider

fwiw..
j

[Dylan]

While I don't have a lot to offer in the way of quality protection equipment, I can say from experience that the cheap stuff is dangerous to trust. I've seen some pretty dodgy stories around the net on "ebay" gear.

[Soulstorm]

This sparks a question I have been having for awhile. What pair of glasses do people wear when working on an RGB projector.

http://www.noirlaser.com/pdf/lasershield-price.pdf

If you want good protection but don't want to pay as much as the really high end stuff, check out the NOIR gear, especially the RGB model. Don't believe it is listed on their site, only in that pricelist. Wouldn't recommend for a 650nm projector though. Or just get specific goggles to cover the power/wavelengths you require, an overlap could help.

Dsli_jon, the PS pair you linked seem quite nice, if only a touch more OD on the 630-650 and they would be perfect for me.

[daction]

Kiwitinker and I both have stanwax safety glasses .

[mixedgas]

Google the many Gels as Safety Eyeware threads and learn how when push comes to shove, they are very dangerous. A total fail in fact.
Steve

[Eidetic]

Let's say you're using a 2W laser. Goggles with OD3 at the appropriate wavelength will attenuate a direct beam from the laser down to 2mW. That's safe. I'd buy a good, professional pair of those and see how they work (keeping it clean while testing). If too bright or too dim get the appropriate one and return the first.

[lazerphase]

Survival laser carries some good goggles around OD3-4 that you can get around $40. some of them block 4 wavelengths like 405nm 445nm 532nm and IR.