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Old 02-18-2011, 01:00 PM #1
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Default Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Hello, all my friends, this is john, the owner of priceangels. there are two lasers on sale in my website this week. (the deadline is Feb 24th)

TRUE 30mW Green Laser Pointer Pen :$10.99

TRUE 50mW Green Laser Pointer Pen : $13.99

I know most of you are professional, and won’t be interested in these kind of low power lasers, but this is only a beginning. We will have one or two lasers on sale every week. Maybe you think the discount is not too much, but we have cut nearly all our interest.

Moreover, we have many other products on sale in my website, you can go and have a look.

if you have any suggestions, tell me. I will consider it seriously.

Best wishes for you!

reliable john


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THREAD :
the real output of priceangels lasers

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Last edited by John7788; 02-18-2011 at 01:11 PM.
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Old 02-18-2011, 01:33 PM #2
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

John, would you be so kind and test the output with an IR filter in front of the laser?

Thanks.
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 02-18-2011, 01:41 PM #3
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Quote:
Originally Posted by DJNY View Post
John, would you be so kind and test the output with an IR filter in front of the laser?

Thanks.

I am troubled by this problem these days. We have several IF filter now, but after we test one of our lasers, we get 5 differ results! one filter says there is nearly 10% IR , but another says it is 30% or even 50%!

I don't know why......... Test IR filter is much harder than test the output. I think I need a professional assistant.

reliable john
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the real output of priceangels lasers

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Old 02-18-2011, 01:51 PM #4
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Quote:
Originally Posted by John7788 View Post
I am troubled by this problem these days. We have several IF filter now, but after we test one of our lasers, we get 5 differ results! one filter says there is nearly 10% IR , but another says it is 30% or even 50%!

I don't know why......... Test IR filter is much harder than test the output. I think I need a professional assistant.

reliable john
It´s not that hard. You should only know the transparency of your IR filters and a bit maths
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 02-18-2011, 02:23 PM #5
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

I see a couple 200mw greenies on that site for 37 and 54 bucks have these been tested to see if they are truly close to that?
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Old 02-18-2011, 02:31 PM #6
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Quote:
Originally Posted by smzy322 View Post
I see a couple 200mw greenies on that site for 37 and 54 bucks have these been tested to see if they are truly close to that?
The real output of Priceangels lasers
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 02-18-2011, 04:08 PM #7
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Thank you good sir
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Old 02-19-2011, 02:30 PM #8
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

It seems that these two lasers are not so attractive, and not many friends are interested in them. Is it because they are low power ones?
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THREAD :
the real output of priceangels lasers

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Old 02-19-2011, 02:45 PM #9
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

The pens are too sensitive for the middle Europe temperatures.

But I´m looking at your 50mW 532nm in XX-850 host, powered by 1x CR123A batterie.

If it is over 40mW, I would like to get three of them. I think they are also less temperature sensitive.


Btw, your site loads very slow.
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 02-21-2011, 04:44 AM #10
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Quote:
Originally Posted by DJNY View Post
The pens are too sensitive for the middle Europe temperatures.

Btw, your site loads very slow.

really? do you mean the picture on my website loads very slow? I will ask my engineer to check it.

BY the way, what is temperature sensitive? It can't operate well when the temperature is low?
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the real output of priceangels lasers

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Old 02-21-2011, 08:19 AM #11
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Quote:
Originally Posted by John7788 View Post
really? do you mean the picture on my website loads very slow? I will ask my engineer to check it.

BY the way, what is temperature sensitive? It can't operate well when the temperature is low?
Nevermind. Your homepage is faster now.

All green (532nm) handheld lasers we have right now are DPSS lasers. DPSS lasers are much more temperature sensitive - this means that they have a much temperature corridor for operating in the way they should. The lasers in these newish pens usually need more than 20°C air temperature. Otherwise the chrystals inside don´t have enough heat to transform the IR (1064nm) output into green (532nm) output.

I had green lasers that arrived during the cold time of the year. I thought they were all dead, but I saw a veryvery low red dot as an output. I realised that this is just the IR. I heated the lasers up with a hairdryer and they performed normal, outputting green.
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 02-21-2011, 02:18 PM #12
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

John, if you want to test the output of your lasers, try this;
Put the IR filter on the pen. Eg 50mW pen, 50mW output, 25mW with IR filter.
Put Another filter on the pen. Eg 50mW pen, 50mW output, 25mW with IR filter and 20mW with two IR filters.
that assumes 20% lose on that type of filter. So, with 50mW output, 25mW filtered + 20% loss, your pen will have 30mW of real green output + 20mW IR.

Hope to help, remembering that I'm no professional
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Last edited by Leodahsan; 02-21-2011 at 02:51 PM. Reason: typo thx anselm :D
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Old 02-21-2011, 02:34 PM #13
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

John, about the IR filter I sent you:
I realize 4mmx4mm is very small and fiddly to work with, but the specs
are very good:

Quote:
You are bidding one piece IR Filter absorbing 808nm and 1064nm.

Specfications:

Material: BG39

Dimension:4.0x4.0x0.1mm

T>95%@532nm&T<0.2%@808nm&T<0.2%@1064nm

S1, S2 AR@532nm R<0.1%
T = transmission
R = reflection
S1, S2 = surface 1 and 2

Basically, it will filter out almost all (99.8%) IR, but also 5% of the green.
So when you measure your output with the filter, you have to compensate like this:
true green output = measured green output * 1.05263158
or
true green output = measured green output / 0.95


Hope this will help.
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Old 02-21-2011, 02:52 PM #14
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Quote:
Originally Posted by anselm View Post
Sometimes I have a real hard time trying to understand what you're saying.
fixed.
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Old 02-21-2011, 03:22 PM #15
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

Quote:
Originally Posted by Leodahsan View Post
John, if you want to test the output of your lasers, try this;
Put the IR filter on the pen. Eg 50mW pen, 50mW output, 25mW with IR filter.
Put Another filter on the pen. Eg 50mW pen, 50mW output, 25mW with IR filter and 20mW with two IR filters.
that assumes 20% lose on that type of filter. So, with 50mW output, 25mW filtered + 20% loss, your pen will have 30mW of real green output + 20mW IR.

Hope to help, remembering that I'm no professional
Quote:
Originally Posted by anselm View Post
John, about the IR filter I sent you:
I realize 4mmx4mm is very small and fiddly to work with, but the specs
are very good:


T = transmission
R = reflection
S1, S2 = surface 1 and 2

Basically, it will filter out almost all (99.8%) IR, but also 5% of the green.
So when you measure your output with the filter, you have to compensate like this:
true green output = measured green output * 1.05263158
or
true green output = measured green output / 0.95


Hope this will help.


Thanks for all you kind help, compare with you, my workers are just like fool, they often tell me "this is too hard, to0 hard", I just want to fire them. But I can't do everything myself.

Maybe it need some time for them to understand how an IR filter works.
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Old 02-21-2011, 03:27 PM #16
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Default Re: Priceangels on sale: $10.99 true 30mw laser pen, $13.99 true 50 mw laser pen

John, another simple way of measuring IR is to put laser safety glasses (those red ones) in front of the laser, and measure the power that passes through them.

If you see no green light on the LPM sensor but still get a reading greater than zero, you have IR. Subtract that number from the output without the safety glasses in front of the laser, and you've roughly calculated the true green output.

-Trevor
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