mhakali
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- Joined
- Aug 3, 2009
- Messages
- 371
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Hello! 
I've seen some speculations about one of FP's newer additions; 200mW Green Beam Laser Pointer (Silver). Is it good? It's damn cheap! Can it be good? Etc. Thought I'd do a quick recap of this pointer and my experiences.
(Any problems loading the pics in the thread? reply and say!)
General properties:
Pointer build quality:
It's a basic pen. With that being said you probably know some limitations already. There Will be overheating problems with this pointer IF it would have an IR diode pumping enough energy to get 200mW of pure green! So this was the prerequisites from the beginning.
Compared to buyincoins.com's P2 Silver pointers which looks a lot similar this model has an extra layer of metal. The casing is a bit thicker. I suppose that this may transfer heat a bit better!
The push button feels loose. Almost as if it would fall in to the pointer itself! The label reads <200mW of 532nm;
Just look at the above picture. The button is almost falling through!
But it dosen't. It hangs in there.
Nothing more about to say about the design really. I'll post you another pic:
Beam quality:
The beam is to summarize horrible! It has a huge divergence. It's width on just a few meter is large! The dot on a few meters is very apparenty oval. Not round as you'd expect.
It has various artifacts around the beam as if the lens was damaged. Perhaps this is a bad ex, but take a look at this picture for example:
This is the dot from about 70cm (~27" for the 2% of the world's countries that dosen't use the metric system!). Take a close look at the surrounding area of the dot. It has a lot of crap/disturbances.
Power output:
This pointer can barely, but it can, light a match. Using 3.6V cells.
It will burn electrical tape fairly easy.
I don't have an LPM or similar to measure the output.
I would from here on define a new term (as I read about E-LPM in this thread, Eye Laser Power Meter);
<joke>
S-LPM: Skin Laser Power Meter. For high powered lasers (expected <300mW) never use thin skin tissue. For lower / fairly high (<200mW) pointers make sure to use caution. As I don't have an LPM or PowerBee and I don't buy lasers over 200mW, I beam myself on the back of my arm where the skin is thin and fairly sensitive. The reaction will help me judge the power output. For this case my S-LPM shows about 130-140mW with combined IR
</joke>
Anyhow. Here's a pic of it burning electrical tape:
It dosen't need long stabilization or focus. It just burns.
The diode (or the place on the laser pointer where the diode is aligned) gets VERY HOT after about 60s of continuous usage
Conclusion:
For $38.65 this is not a bad deal.
This being said it's rubbish. You would not like to spend your almost $39 on this pointer! You will regret it. It will be laying around your house doing nothing because you find it unsexy with it's fat beam!
But then again. This was expected. Right?
Place your bet on another horse.
I've seen some speculations about one of FP's newer additions; 200mW Green Beam Laser Pointer (Silver). Is it good? It's damn cheap! Can it be good? Etc. Thought I'd do a quick recap of this pointer and my experiences.
(Any problems loading the pics in the thread? reply and say!)
General properties:
- 200mW
- 532nm +-10nm
- Awesome FAT beam which expands tremendously!
- Runs on AAA-batteries
- Cheap ($38.65)
- Available here
Pointer build quality:
It's a basic pen. With that being said you probably know some limitations already. There Will be overheating problems with this pointer IF it would have an IR diode pumping enough energy to get 200mW of pure green! So this was the prerequisites from the beginning.
Compared to buyincoins.com's P2 Silver pointers which looks a lot similar this model has an extra layer of metal. The casing is a bit thicker. I suppose that this may transfer heat a bit better!
The push button feels loose. Almost as if it would fall in to the pointer itself! The label reads <200mW of 532nm;
Just look at the above picture. The button is almost falling through!
But it dosen't. It hangs in there.Nothing more about to say about the design really. I'll post you another pic:
Beam quality:
The beam is to summarize horrible! It has a huge divergence. It's width on just a few meter is large! The dot on a few meters is very apparenty oval. Not round as you'd expect.
It has various artifacts around the beam as if the lens was damaged. Perhaps this is a bad ex, but take a look at this picture for example:
This is the dot from about 70cm (~27" for the 2% of the world's countries that dosen't use the metric system!
). Take a close look at the surrounding area of the dot. It has a lot of crap/disturbances.Power output:
This pointer can barely, but it can, light a match. Using 3.6V cells.
It will burn electrical tape fairly easy.
I don't have an LPM or similar to measure the output.
I would from here on define a new term (as I read about E-LPM in this thread, Eye Laser Power Meter);
<joke>
S-LPM: Skin Laser Power Meter. For high powered lasers (expected <300mW) never use thin skin tissue. For lower / fairly high (<200mW) pointers make sure to use caution
. As I don't have an LPM or PowerBee and I don't buy lasers over 200mW, I beam myself on the back of my arm where the skin is thin and fairly sensitive. The reaction will help me judge the power output. For this case my S-LPM shows about 130-140mW with combined IR </joke>
Anyhow. Here's a pic of it burning electrical tape:
It dosen't need long stabilization or focus. It just burns.
The diode (or the place on the laser pointer where the diode is aligned) gets VERY HOT after about 60s of continuous usage
Conclusion:
For $38.65 this is not a bad deal.
This being said it's rubbish. You would not like to spend your almost $39 on this pointer! You will regret it. It will be laying around your house doing nothing because you find it unsexy with it's fat beam!
But then again. This was expected. Right?
Place your bet on another horse.
Last edited:
