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Old 05-12-2014, 11:35 PM #17
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Default Re: Radiant Electronics X4 at less than 10mw, how accurate?

Ive been told Laser glow's lasers are measured and accurate when they ship, and I ordered a 3-5mw green and red from them so when they show up and the X4 shows up ill test them and report back.


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Old 05-17-2014, 02:37 AM #18
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Default Re: Radiant Electronics X4 at less than 10mw, how accurate?

Quote:
Originally Posted by Rifter View Post
Ive been told Laser glow's lasers are measured and accurate when they ship, and I ordered a 3-5mw green and red from them so when they show up and the X4 shows up ill test them and report back.
Looking forward to it. I put up a graph from the X4 in a build thread for the Aixiz 8x31 module I mentioned in an earlier post. It shows a definite "stairstep" I assume is related to resolution, but provides repeatable results that "seem to match" the advertised power of the module.

I am interested to see someone test a "verified" 5-10mW on the X4, and see what it's accuracy really is at that low power.
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Old 05-22-2014, 04:49 AM #19
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Default Re: Radiant Electronics X4 at less than 10mw, how accurate?

So I have been playing with my x4 for a hour or so now and all I can say is that to get an accurate reading at less than 5mw is very hard.

So I ended up finally getting accurate reading on my two laserglow's with the x4 heatsink and laser as close together as I could get them, less than an inch. I had this setup in a box to eliminate air movement. I powered the x4 off of a USB battery pack so there was no wires running out of the box.

Final result is my libra tested an average of 3.6mw and
peak 4.1mw and my anser tested 4.2 avg and 4.7 peak.
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Old 05-22-2014, 05:41 AM #20
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Default Re: Radiant Electronics X4 at less than 10mw, how accurate?

Quote:
Originally Posted by Rifter View Post
So I have been playing with my x4 for a hour or so now and all I can say is that to get an accurate reading at less than 5mw is very hard.

So I ended up finally getting accurate reading on my two laserglow's with the x4 heatsink and laser as close together as I could get them, less than an inch. I had this setup in a box to eliminate air movement. I powered the x4 off of a USB battery pack so there was no wires running out of the box.

Final result is my libra tested an average of 3.6mw and
peak 4.1mw and my anser tested 4.2 avg and 4.7 peak.
Agreed -- it is difficult. The environmental influences like air movement, sunlight, skin radiation, etc. can be minimized by shielding the sensor (as you did with a box). But the distance from the sensor also makes a big difference in the reading, so I'm not sure exactly what distance results in an "accurate" reading.

I have a source I "assume to be" close to 5mW based on its specifications. At 1.0cm from the sensor the X4 measures it at 5.5mW. At 2.5cm, the reading is 3.6mW. And at 10cm, it is 2.4mW.

So I'm not sure what the "correct" distance is to get an accurate reading. Based on my results and yours, I'd say something around 1-2cm is probably appropriate when under 10mW.
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My Laser Equipment:
405nm Sci-Fi Lasers SF501B (LPM 512mW)
445nm WL Arctic 1.4W (LPM 1.7W)
445nm Self-built, 9mm Zaser (LPM 2.8W) {Build}
445nm Self-built, M140 in C6 daguin kit (LPM 1.7W)
520nm Self-built, PLP520-B1 in C11 (LPM 198mW)
532nm JetLasers PL-E Pro 800mW 532nm (LPM 921mW)
532nm JetLasers TI-B 100mW 532nm (LPM 108mW)
532nm WL Nano 15mW (LPM 84mW)
638nm Self-built, ML501P73 in C11 (LPM 539mW w/3E lens, 638mW w/G2)
650nm Self-built, Aixiz module (LPM 5.6mW) {Build}
650nm WL Nano 100mW (LPM 129mW)
LPMs: Radiant X4; Laserbee 7W with Ophir 20C
Eagle Pair 190-540nm, NoIR ARG 180-532nm, Uvex S0360 200-540, NoIR 190-460nm, Eagle Pair 580-760nm
WL Dark Amber,
WL Blue (Unknown specs. Do you feel lucky? Do ya?)
Most Important Safety Device: A BRAIN
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