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Old 06-08-2011, 01:21 AM #1
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Question Is this laser any good?

From "oxlasers" on Ebay:

CB-1000 445nm Blue Laser Pointer Focusable Water Proof - eBay (item 260794968092 end time Jul-03-11 00:39:08 PDT)

I probably should have asked here *BEFORE* pulling the trigger, but o well.


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Old 06-08-2011, 01:31 AM #2
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Default Re: Is this laser any good?

Looks sketchy a new member with no history at all.
Error "532nm" in description. Hm......
Good luck, I guess...
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Old 06-08-2011, 03:37 AM #3
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Red face Re: Is this laser any good?

I noted the description error -- I chalked it up to human error under the assumption that this person has handled mainly 532nm DPSS lasers until just recently...but you know what they say, "When you assume, that makes an ass out of you and me."

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Old 06-08-2011, 07:00 AM #4
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Default Re: Is this laser any good?

There is one that is essentially the same laser on dinodirect for $50 less.
1000mW 1W 447nm Waterproof Adjust Focus Blue Laser Pointer Pen (1 x 18650 Battery) - DinoDirect.com
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Old 06-08-2011, 11:10 PM #5
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Default Re: Is this laser any good?

Quote:
Originally Posted by yobresal View Post
There is one that is essentially the same laser on dinodirect for $50 less.
1000mW 1W 447nm Waterproof Adjust Focus Blue Laser Pointer Pen (1 x 18650 Battery) - DinoDirect.com
I just purchased that one; presuming it ships to the US alright, I'll compare them both.


Quote:
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Looks sketchy a new member with no history at all.
Everybody on Ebay was a newbie at one time...I've decided to give this seller the benefit of the doubt in this case.
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Old 06-08-2011, 11:29 PM #6
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Default Re: Is this laser any good?

Nice! I was curious about that one I linked. Looking forward to your eval.
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Old 06-08-2011, 11:44 PM #7
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Default Re: Is this laser any good?

Quote:
This is a high power 5mW 445nm Blue laser pointer
That's not high power
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Old 06-09-2011, 12:22 AM #8
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Default Re: Is this laser any good?

It is just a tactic they use to get by selling those on ebay.
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Old 06-09-2011, 04:13 PM #9
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Talking Re: Is this laser any good?

Quote:
Originally Posted by yobresal View Post
Nice! I was curious about that one I linked. Looking forward to your eval.
A good review you'll get too -- I also purchased a LaserBee LPM that can "do" up to 2.50 watts -- so I'll have power measurements on them -- plus my pair of Arctics as well!!!

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Old 06-28-2011, 10:31 PM #10
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Talking Re: Is this laser any good?

Quote:
Originally Posted by yobresal View Post
Nice! I was curious about that one I linked. Looking forward to your eval.
It just came a few moments ago; power measurements forthcoming shortly!
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Old 06-28-2011, 11:16 PM #11
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Default Re: Is this laser any good?


Power output with the collimating lens in place: 690mW.



Power output with the collimating lens removed: 891mW.
This shows that the lens housing is vignetting (cutting off) the beam; this power differential is far greater than would be caused by merely passing the laser beam through a lens.



Spectrographic analysis of the laser diode in this product.
Wavelength appears to be ~445nm, which is ***WELL*** within specification for the type of laser diode used in this laser.




Same as above; but spectrometer's response narrowed to a band between 400nm and 410nm.
This shows that the wavelength is in fact exactly 447.00nm and the spectral line halfwidth is ~2.20nm.

My full review will be posted on this BBS probably sometime tomorrow morning.

Last edited by The_LED_Museum; 06-28-2011 at 11:54 PM. Reason: Remeasured power output with different battery.
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Old 06-28-2011, 11:33 PM #12
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Default Re: Is this laser any good?

This is the DinoDirect one? Man why can't these guys delivery their rated output. Such a shame. It is a pretty cool laser in almost every other way. I would love one of these at 1.2W
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Old 06-28-2011, 11:55 PM #13
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Default Re: Is this laser any good?

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This is the DinoDirect one? Man why can't these guys delivery their rated output. Such a shame. It is a pretty cool laser in almost every other way. I would love one of these at 1.2W
Yup, this is indeed the DinoDirect one.
I did remeasure both lensed and unlensed power output with a different battery and got slightly higher readings, but still not the 1W that was advertised.
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Old 06-29-2011, 12:10 AM #14
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Default Re: Is this laser any good?

Nice!...well sort of depending on ur point of view, $123 for class IV 445nm laser is still not that bad and it is a 18650 host, which personally i like more than using 2xcr123.

Ill check out ur review tomorrow!... is the host blue colored as depicted in the pics?
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Old 06-29-2011, 12:41 AM #15
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Default Re: Is this laser any good?

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Ill check out ur review tomorrow!... is the host blue colored as depicted in the pics?
Yes, the host body itself is blue.
To wit:


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Old 06-29-2011, 01:00 AM #16
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Default Re: Is this laser any good?

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Nice!...well sort of depending on ur point of view, $123 for class IV 445nm laser is still not that bad and it is a 18650 host, which personally i like more than using 2xcr123.

Ill check out ur review tomorrow!... is the host blue colored as depicted in the pics?
2x CR123 or 2x 18350's even 2x 18650 (if you dont mind the length..)
make for better lasers.. I say this because when used with a buck driver,
there is no heat added to the laser and less current is drawn from the batteries.

Most boost circuits that ive tried tend to generate plenty of wasteful
heat when upward of 1.5A+.

A buck driver putting out 1.5A or more do not need thermal epoxy
nor additional heatsinking. Thats a win in my books



Guess its preference
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