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Review DO's & DON'Ts

InfinitusEquitas

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This is more of a clarification: don't be afraid to call out a problem just because the company is giving you something in exchange for a review. A lot of reviewers may be pressured to give a product an overwhelmingly positive review because they got the product for free, but do your best to remain neutral.
Seconded.

Just be honest about everything when doing the review, and let pictures & numbers do the talking for you.
 

Step

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Thanks for sharing this useful info. Will be helpful!!
 

olympus mons

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Hey there,
I got my O-like and am writing a review but need some info.
I see its appreciated to measure the dot at different distances. Could you please tell me how is best to go about this? It is a 532nm btw in case that matters. Thanks
 

InfinitusEquitas

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Basically what you're trying to do is determine divergence, or how quickly the beam expands over distance.

There is no hard rule on the distance at which you should do it, but it's best to have several measurements of the dot at various distances. Say 2 meters, 5, 10, 30.

Once you have any two sets of measurements, beam width at two points you can do the math, or if you're lazy like me, plug it into here: pseudonomen137's JScript mRad Calculator

To actually measure the beam width the easiest option is to have the laser hit a wall, a door, or anything solid, and measure the distance from the laser to it.

Just grab a ruler, and go for it. The dot will be quite bright so you should wear goggles while doing this.
 

Flaminpyro

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This is a good thread and I 2nd the motion there should be a rating system for reviews !!!
 
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olympus mons

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Basically what you're trying to do is determine divergence, or how quickly the beam expands over distance.

There is no hard rule on the distance at which you should do it, but it's best to have several measurements of the dot at various distances. Say 2 meters, 5, 10, 30.

Once you have any two sets of measurements, beam width at two points you can do the math, or if you're lazy like me, plug it into here: pseudonomen137's JScript mRad Calculator

To actually measure the beam width the easiest option is to have the laser hit a wall, a door, or anything solid, and measure the distance from the laser to it.

Just grab a ruler, and go for it. The dot will be quite bright so you should wear goggles while doing this.
Thank you for the help I.E. I hope my review is decent.
Cheers
 




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