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I just got an LPM-1. I love it, however it has no setting for blu-rays. I asked about calibrating it for a 405nm and this is the response I got.
I then asked about the sper2 correction chart and using something like their chart for 405nm diodes and this was the response.
OK, so each sensor is slightly different. What are the options?
EXPENSIVE WAY of doing this is for me so send it back in with a standard and laser and get it done. (I don't want to spend another $100.00 on the meter right now, but if you're intrested, I'm sure he'd do it for you if you have the stuff)
SIMPLE WAY of doing this is find someone with an accurate meter for 405nm and measure their blu-ray with an accurate reading and then a LPM-1 reading in either 473 or 532 and do the division. This would get us all a rough approximation of an accurate correction factor (probably in the 1.75 to 2.6 range)
Another way, I think would work, but requiring more time and patience.
HARD WAY of doing this (but probably more accurate) is to again get someone with a thermopile or something they can accurately measure the 405nm and a LPM-1 to do the same reading as before, but also do a reading at each nm range for that same laser. THEN plot the results. This would give you a graph of the characteristics of that particular sensor. (Albiet a rough graph with only 5 points) Post the results.
Anyone else should be able to take any laser they have and do the same thing matching their graph results against the one that is posted.
The output wouldn't be important for any of the freqs, But the ratio between the different frequencies would be the key factor. Then the results of their graph they could compare against the posted graph and then adjust their correction factor accordingly for a more accurate reading.
If the sensors are similar enough this wouldn't matter much, but if their is a fair degree of change between sensors (say, over 5-10%) then you could improve the accuracy of your particular correction factor by using this.
(The HARD WAY could be done entirely on a LPM without another meter or someone else, but for reference a standard would be nice)
Comments, ideas, help, anyone?
The only comment I have found about LPM-1 and using a 405nm with it is listed below:
I then asked about the sper2 correction chart and using something like their chart for 405nm diodes and this was the response.
OK, so each sensor is slightly different. What are the options?
EXPENSIVE WAY of doing this is for me so send it back in with a standard and laser and get it done. (I don't want to spend another $100.00 on the meter right now, but if you're intrested, I'm sure he'd do it for you if you have the stuff)
SIMPLE WAY of doing this is find someone with an accurate meter for 405nm and measure their blu-ray with an accurate reading and then a LPM-1 reading in either 473 or 532 and do the division. This would get us all a rough approximation of an accurate correction factor (probably in the 1.75 to 2.6 range)
Another way, I think would work, but requiring more time and patience.
HARD WAY of doing this (but probably more accurate) is to again get someone with a thermopile or something they can accurately measure the 405nm and a LPM-1 to do the same reading as before, but also do a reading at each nm range for that same laser. THEN plot the results. This would give you a graph of the characteristics of that particular sensor. (Albiet a rough graph with only 5 points) Post the results.
Anyone else should be able to take any laser they have and do the same thing matching their graph results against the one that is posted.
The output wouldn't be important for any of the freqs, But the ratio between the different frequencies would be the key factor. Then the results of their graph they could compare against the posted graph and then adjust their correction factor accordingly for a more accurate reading.
If the sensors are similar enough this wouldn't matter much, but if their is a fair degree of change between sensors (say, over 5-10%) then you could improve the accuracy of your particular correction factor by using this.
(The HARD WAY could be done entirely on a LPM without another meter or someone else, but for reference a standard would be nice)
Comments, ideas, help, anyone?
The only comment I have found about LPM-1 and using a 405nm with it is listed below:
