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ArcticMyst Security by Avery

Looking for an Optotronic RPL 450-500 mW 532nm

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Aug 25, 2010
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I'm interested to buy that laser, at a reasonable price, but it must be in mint condition, not underspeced, with stable output power, low divergence, thin beam, almost parallel beam to the host, and with a clean dot without any line, reflections, patterns or aberrations around it.
The host must be without deep scratches or identations.

Good year to all !! :beer:
 
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Joined
Mar 11, 2013
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you understand RPLs are known for their thin beams, right?

I've got one waiting to be sent in for repair, it was only doing 150mW

what do you suppose the RPL has that your herc lacks, other than size considerations? I'd say the herc is better in nearly every way, though I do dislike D batteries

all DPSS units not temp controlled will experience at least some instability.

I'd actually consider trading mine, once repaired, for a 800mW+ 532nm JL PL-E pro, but I see you don't have one of those. watch the duty cycle on your 445nm pro, I overdid it on mine and the diode degraded to 1.3W output, most unimpressive for that diode

cheers and good luck
 
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Joined
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Hello and Good Year :beer:
I like RPL for its very thin beam and for its very low divergence.
No other handheld lasers reach this specs.
It has 6 mins duty cycle that is more than enough for my use.
I had many Hercules, and the only good thing is that it has active cooling and permits a long duty cycle (max reccomended: 15 minutes).
Hercules had a 2.5 mm beam diameter, that is too much big in my modest opinion.
I'm a laser collectors and my collection lack the Optotronic one.
My other 445 nm lasers for the momment are at its best performances, because I use they with short duty cycles in a very cold environments (tonight it was -4 °C with low humidity, an environment very appreciated for the multimode diodes :san:).
The only lasers that I suppose to degrade quickly is my Jetlaser 445nm 4W, because it become hot in less than 2 minutes, and as You know, more heat is generated, more current is absorbed by the diode, more quickly is the decay of the diode specs.
 
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Oh ok, your OP says thick beam.

I suppose they have some things hercs do not

http://laserpointerforums.com/f52/optotronics-rpl-vs-laserglow-hercules-81772.html

if you are hoping for significantly better divergence, you might be dissapointed. the RPLs are good and might beat out a herc, but I don't think it would be by any significant margin. maybe diameter, as you said.

best of luck. they pop up around here every now and then, usually for $500+
 
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Oh my God, I wrote thick instead thin, my typo sorry.
Usually Hercules has 1.2 mRad, while RPL is <1.0 mRad. They uses different diodes and different lenses. I had both of them and I assure that a long distance the Hercules spot is really big compared to the RPL one.
Unluckly the Speedy Optotronic 500 that he had sold me some times ago showed some major issues so I have sold it for less than 200 dollars. I'm looking for a better unity ...
 

Podo

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IIRC The beam of the Laserglow Hercules 800 532nm you have is 2.5mm thick?

I thought it was 1.5mm as written in the Laserglow datasheet.

And had you ever measured the Optotronic 500 beam thickness?

I don't think the Optotronic green handhelds really managed to produce a <1.5mm beam with <1.1 mrad if your expensive expensive Laserglow handheld couldn't achieve it.

although Optotronic says the RPL is Lowest true divergence in the industry
 
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Hello.
Yes I have measured it with an electronic caliper, near the aperture shutter and against a wall at 10 meter distance. Everything is as described.
What Laserglow said is half true. 1.5 mm is achieved only up to 200 mW. After 200 mW the beam diameter become 2.5 mm. Probably the diode and the crystals used are different.
 

Podo

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Then I would suspect that the models/diode used inside the RPL 200 to 450 model are all the 150mw~250mw model. Just because some came out good test results then it will be labelled as RPL400/450 to sell. That's why all Optotronic RPLs have a great divergence no matter which output. You won't see a 600mw from Optotronic because it needs a higher pump diode/model to reach 600mw, in other word the beam thickness would increase as higher output like the Laserglow Hercules .
 
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Laserglow Hercules use c-mount n-light diodes from CNI, while Optotronic use Viasho DPSS diodes. Probably different diodes make different results. In addition there are so many crystals suppliers and lenses suppliers, obviously the results may vary considerably.
 




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