Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

Buy Site Supporter Role (remove some ads) | LPF Donations

Links below open in new window

FrozenGate by Avery

Dragonlasers beam expander video

In January of this year I bought a DL Viper 95 mW GW; only two weeks ago I have had the opportunity to check its output power with my recent purchase, the LaserBee I power meter, and in a 30 sec. test (4 in. distance from the sensor) I have discovered that the average output is an awesome 125 mW :D (124 mW at the beginning and 127 mW at the end of the test). With such a quality result, noway, I have immediately ordered this beam expander! ;D
 

Attachments

  • DL95mW.jpg
    DL95mW.jpg
    175.2 KB · Views: 315





As far as power-loss goes, it does not "have-to" reduce your power a lot, but qaulity/price seems to be the determimng factor here.
The going-price for a "laser beam-expander", or a "laser-telescope" seams to be in the $400 range. Laser-Glo is just the first company in the recreational-market to provide these, there are lots of these available from "professional-laser companies", for example: http://www.beamexpander.com/?gclid=CK_ioZyv05ICFRImawodzxnNGg, or surplus: http://www.surplusshed.com/pages/item/pm1093.html . I bought a 10x "compact beam-expander" from Lasermate in California last winter for like $50, http://www.lasermate.com/optics.htm, this thing is smaller than the one from DL, and way smaller than Laser-Glo's even though they are all supposed to be "10X". Not only is the Lasermate much smaller, it also cut the power of any of my lasers to about half! I have not used it much, and I will probably sell it to someone cheap! I really like the look of the one from DL, I hope it works good! ;D
Sound like we need to have some people buy these and find out if they are good or not. I do not have any of the lasers they make adapters for, but I will look into making some universal-adapters for the "common-lasers", if they work out good. :)
DH
 
group buy. Group Buy! GROUP BUY! GROUP BUY!!!

Yes, I would like to have one of these. :D
 
Dark_Horse said:
Sound like we need to have some people buy these and find out if they are good or not. I do not have any of the lasers they make adapters for, but I will look into making some universal-adapters for the "common-lasers", if they work out good. :)
DH
Click to expand...

Define what you mean by good
 
bad news and worse news.Bad is that the price wouldn't go down in bulk.worse news is that the price is going to go up by 10 to 30% soon. :'( :'( :'(
 
steve001 said:
[quote author=Dark_Horse link=1216741151/0#17 date=1217091872]
Sound like we need to have some people buy these and find out if they are good or not. I do not have any of the lasers they make adapters for, but I will look into making some universal-adapters for the "common-lasers", if they work out good. :)
DH
Click to expand...

Define what you mean by good
[/quote]

Good: Reasonable qaulity in general for an optic-product, (fit and finish), and of course its optical properties. How much power-loss is there? I would think over 10 percent loss would be unacceptable to me, but I have now idea what these are "spec'ed" at. My "Laser-Mate" 10x beam expander cuts over half of my output.
DH
 
I wonder what the thread size is, standard C size ? (1 inch-32 TPI), and I noticed it says it's only a single lens? The Melles Griot's for example is a multiple lens system.
 
Dark_Horse said:
[quote author=steve001 link=1216741151/20#20 date=1217183539][quote author=Dark_Horse link=1216741151/0#17 date=1217091872]
Sound like we need to have some people buy these and find out if they are good or not. I do not have any of the lasers they make adapters for, but I will look into making some universal-adapters for the "common-lasers", if they work out good. :)
DH
Click to expand...

Define what you mean by good
[/quote]

Good: Reasonable qaulity in general for an optic-product, (fit and finish), and of course its optical properties. How much power-loss is there? I would think over 10 percent loss would be unacceptable to me, but I have now idea what these are "spec'ed" at. My "Laser-Mate" 10x beam expander cuts over half of my output.
DH
[/quote]


Specs are listed on the site. I have a Lasermate 10x expander too. As I surmise you know you can replace the lenses with properly AR coated ones from Edmund Optics, which I plan on doing.
Do you have access to a metal lathe ?
My solution for attaching this expander to my Novalaser Alpha laser was to purchase a pvc coupler reducer and enlarge both openings too slip fit over the ends of the laser and the expander. It works ok. That's why I asked about a lathe.
 
jamilm9 said:
bad news and worse news.Bad is that the price wouldn't go down in bulk.worse news is that the price is going to go up by 10 to 30% soon. :'( :'( :'(
Click to expand...
bad
 
Opps my bad it does has 4 lens, I can't see where is shows the size of the threads though, C mount? Transmission says 98% though.
 
You must log in or register to reply here.





Back
Top