473nm Blue Pointer in Pen Style Case!

[darklandz]

i saw a cni like this from lasers_corp claiming it was 50mw, it sold for around $500.
feel sorry for the person who bought that, got scammed badly.

 

[Chicxulub]

as senkat was saying the laser may be unfiltered and the IR output affecting the lasercheck reading - i think for those lasers the IR filter is glued right to the cap so if you unscrew the top cap you should see a green/blue colored piece of glass glued to the cap, if not - you'll know the 50mW is really BS

Mine doesn't have the IR filter behind the endcap. From what I can tell, it must be behind the focusing lense somewhere because I can't find any IR with my camera.

As for the blue laser here, even if it's just a 5mw version, I think he got a pretty good deal.

 

[spark001uk]

As for the blue laser here, even if it's just a 5mw version, I think he got a pretty good deal.

As I said, I'm not particularly worried that it's not 50mW, or anywhere near it. It's a nice bright spot, visible beam at night / subdued daylight, and it was 200 quid. Which in UK at least is a good price for a blue handheld, if indeed you can get one at all !

 

[Chicxulub]

[quote author=quadcam link=1214255224/12#18 date=1214274591]

As for the blue laser here, even if it's just a 5mw version, I think he got a pretty good deal.

As I said, I'm not particularly worried that it's not 50mW, or anywhere near it. It's a nice bright spot, visible beam at night / subdued daylight, and it was 200 quid. Which in UK at least is a good price for a blue handheld, if indeed you can get one at all ! [/quote]

Bright indeed. If I'm careful with my Aquarius 5, on new batteries it'll hold 12-15mw for about 15 minutes before it gets hot and starts mode hopping. When it's doing that, it compares very favorably to a 5mw greenie.

 

[spark001uk]

I'm assuming these CNI are essentially Aquarius, as when i click on retailers in the CNI website it shows Laserglow in the list. USA i think.
Does yours draw 1.2A too?

 

[styropyro]

If your "300mW" pen is only drawing 420mA, then it is DEFINITELY not 300mW. You don't find 300mW of green ever in a pen, whoever you bought it from scammed you...

 

[SenKat_Stonetek]

[quote author=spark001uk link=1214255224/0#11 date=1214261319][quote author=pseudonomen137 link=1214255224/0#10 date=1214260776]If you're thinking of the same italy ebay seller I'm thinking of - watch out. They started off selling reasonable 100mW greens at okay prices - seemed decent enough. Then they started taking the same 80mW CNIs and calling them 200mW+ IIRC. Its very easy for unfiltered IR to mess with a lasercheck reading with blue lasers - My RPL 17mW reads in at >85mW on a lasercheck, but measurements with an extra IR filter bring it back down to reasonable numbers. Its possible I guess, but I highly doubt anyone would let 50mW get away for $450 - if they did, they'd be taking a DEFINITE loss so either you got very lucky... or... not

To be honest i did doubt 50mW, but I'd say for what i paid i did reasonably ok to get a blue pointer at all?![/quote]


It's actually a pretty fair price for a 5mW blue from a reputable dealer. Look around at the prices. I wonder if the Lasercheck can be set to different "ranges" so that the decimal point is simply in the wrong place. As I said, still a fair price for the unit, just probably NOT 50mW.

Peace,
dave[/quote]

Daguin -

The entire reason I am so, "anti-lasercheck" is because you have to manually set the wavelength you are measuring, and a picture really proves nothing as far as I am concerned ! If they put together a seamless MOVIE of them checking it at 473 or whatever, WITH an IR filter in front of the lasercheck, then I would believe the measurement....since that is bloody unlikely to happen - well you get the idea. Laserchecks are decent for portability, and non-accurate measurements. It will give you a nutso reading if there is IR in the beam, Windstrings almost had a heart attack when I measured his Herc at over 600mw with my old lasercheck.... LOL he thought he got one helluva great deal (he did, but that is not the point here....LOL) Anyways...laserchecks can be fooled very easily - if the Lasercheck is the only way their lasers are measured, then they are not doing right by their customers.

 

[pseudonomen137]

It's actually a pretty fair price for a 5mW blue from a reputable dealer.  Look around at the prices.  I wonder if the Lasercheck can be set to different "ranges" so that the decimal point is simply in the wrong place.  As I said, still a fair price for the unit, just probably NOT 50mW.

Peace,
dave

Nah, the lasercheck only has two units for autoranging - mW and uW. It only takes a very small amount of IR for the lasercheck to give you a bogus reading - I'm 99% sure that's the deal here (assuming the seller wasn't just trying to commit outright fraud. The CNI blue's come as low as a 0.6-2mW version IIRC.

 

[Razako]

[quote author=daguin link=1214255224/12#15 date=1214263184][quote author=spark001uk link=1214255224/0#11 date=1214261319][quote author=pseudonomen137 link=1214255224/0#10 date=1214260776]If you're thinking of the same italy ebay seller I'm thinking of - watch out. They started off selling reasonable 100mW greens at okay prices - seemed decent enough. Then they started taking the same 80mW CNIs and calling them 200mW+ IIRC. Its very easy for unfiltered IR to mess with a lasercheck reading with blue lasers - My RPL 17mW reads in at >85mW on a lasercheck, but measurements with an extra IR filter bring it back down to reasonable numbers. Its possible I guess, but I highly doubt anyone would let 50mW get away for $450 - if they did, they'd be taking a DEFINITE loss so either you got very lucky... or... not

To be honest i did doubt 50mW, but I'd say for what i paid i did reasonably ok to get a blue pointer at all?![/quote]


It's actually a pretty fair price for a 5mW blue from a reputable dealer. Look around at the prices. I wonder if the Lasercheck can be set to different "ranges" so that the decimal point is simply in the wrong place. As I said, still a fair price for the unit, just probably NOT 50mW.

Peace,
dave[/quote]

Daguin -

The entire reason I am so, "anti-lasercheck" is because you have to manually set the wavelength you are measuring, and a picture really proves nothing as far as I am concerned ! If they put together a seamless MOVIE of them checking it at 473 or whatever, WITH an IR filter in front of the lasercheck, then I would believe the measurement....since that is bloody unlikely to happen - well you get the idea. Laserchecks are decent for portability, and non-accurate measurements. It will give you a nutso reading if there is IR in the beam, Windstrings almost had a heart attack when I measured his Herc at over 600mw with my old lasercheck.... LOL he thought he got one helluva great deal (he did, but that is not the point here....LOL) Anyways...laserchecks can be fooled very easily - if the Lasercheck is the only way their lasers are measured, then they are not doing right by their customers.[/quote]
I measured a dx true 30 with my lasercheck and it gave me a reading of 81mw. I put an IR filter in front and the reading dropped down to 28mw. If I was a scammer I would take a picture of the 81mw reading and then sell the laser as 80mw.

 

[pseudonomen137]

True. Any ideas why its drawing 1.2A? At 3% efficiency, even 30mW would only need a 1W IR diode @ 3v (drawing about 350mA i believe) ? Or is it the fact it's Qswitching that's fooling my dvm perhaps?

A 100W lightbulb means 100W power draw, but a 1W diode means 1W output - input is more like 3-4W. 30mW 473nm from a 1W 808nm diode is a lot to ask - even 10mW RPL blues use a 2.5W pump diode.

 

[SenKat_Stonetek]

Razako - fortunately for ALL OF US, you are not a scammer

 

[pseudonomen137]

NOTE ON LASERCHECKS SUSCEPTIBILITY TO IR

Here's some vids I took a loong time agoto show that Spymode lasers are IR spewing scams. IIRC, the vid shows a >400mW lasercheck reading that drops to 20mW when you use an IR filter. Laserchecks were only intended for narrow-band single wavelength light sources - if you measure a DPSS laser with a lasercheck, it needs to be heavily filtered to measure only a specific wavelength:

http://s105.photobucket.com/albums/m218/lasers-ch/?action=view&current=ir2.flv
(not really related, but here's the vid showing the horrible IR spew on a spymode) http://s105.photobucket.com/albums/m218/lasers-ch/?action=view&current=ir1.flv

 

[FrothyChimp]

CNI did offer a 50mW blue pen for a short time but they now claim it "unworkable" and their high is now 40mW for those pens. Keep in mind that the laser itself is a 700Hz pulsed laser. As such you can go way over the normal CW rating for current input and the output is therefore much higher. I don't have pulse width information for these lasers so we can't really figure out what the exact pulse power is but we do have a "50mW" photo that can be used as a starting point. Fifty milliwatt can work for a pulsed system but as you go up in power even pulsed systems need proper cooling, which is why I suspect the blue 50 pen from CNI is now "unworkable".

Now to the issue at hand.....the price. Way, way, way low for a 50mW 473nm even a pulsed one. Something is really wrong here. The numbers don't jive. That dog won't hunt!

 

[Ace82]

How does the pulse effect the burning?  If it was 50mW, it would produce a noticeable amount of heat, theoretically pop balloons or light a match.  When I saw your first post, I was like NO WAY.  And I held in my shock because I really doubted it was true.  Then as I saw the truth unravel, I was like I KNEW IT!  But my new RPL blue 35 was about to get sold!  ;D Anyway, for 5mW, that is a good price in a nice pen.    You didn't buy it only for the 50mW did you, because you got scammed!  Too bad, probably could had sold it with a honest description just the same.  

 

[spark001uk]

No I didn't buy it for the power, i bought it for the fact it's a blue!
I'm just waiting for 445 and 473nm diodes to get into full swing in this market, then there'll be no "IR" arguments!

Be a while yet though, $2800 for an engineering sample of an NDB7112E 500mW 445nm diode from Nichia apparently!

http://www.nichia.co.jp/product/laser-main.html

 

[VW]

How does the pulse effect the burning?  If it was 50mW, it would produce a noticeable amount of heat, theoretically pop balloons or light a match.  When I saw your first post, I was like NO WAY.  And I held in my shock because I really doubted it was true.  Then as I saw the truth unravel, I was like I KNEW IT!  But my new RPL blue 35 was about to get sold!  ;D Anyway, for 5mW, that is a good price in a nice pen.    You didn't buy it only for the 50mW did you, because you got scammed!  Too bad, probably could had sold it with a honest description just the same.  

50mW of pulsed would be around 100mW per pulse with a 50/50 duty cycle, so it wouldn't be too bad at 700Hz. I would imagine 2000Hz would be a lot better at burning though... Just a shame this whole debate is poinless lol...