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Old 03-18-2012, 08:04 AM #17
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Default Re: Best LPM for the price

Stick a big IR filter in front of the thermo pile and/or a small one in front of the laser. Problem solved (yes very ghetto but it should correct the IR leakage problem)


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Old 03-18-2012, 11:21 AM #18
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Default Re: Best LPM for the price

Quote:
Originally Posted by mattco2 View Post
Stick a big IR filter in front of the thermo pile and/or a small one in front of the laser. Problem solved (yes very ghetto but it should correct the IR leakage problem)
As I stated above... that is only required for DPSS Lasers like 532nm.
The IR Filter should NOT be permanently mounted to the front of a
Thermopile Sensor.


Jerry

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Old 03-18-2012, 06:29 PM #19
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Default Re: Best LPM for the price

Remember the BlueFan LPM's price of 70Eur doesn't include shipping!
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Old 03-18-2012, 07:34 PM #20
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Default Re: Best LPM for the price

Quote:
Originally Posted by lasersbee View Post
As I stated above... that is only required for DPSS Lasers like 532nm.
The IR Filter should NOT be permanently mounted to the front of a
Thermopile Sensor.


Jerry
So would sticking a temporary IR filter in front of a frequency doubled laser make the reading accurate/reliable?
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Old 03-18-2012, 09:23 PM #21
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Default Re: Best LPM for the price

It should keep the leakage at an acceptable level and laserbee yea only a temp filter in front of the thermo pile
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