Author Topic: LS 20/20  (Read 1663 times)

Mickyg02

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LS 20/20
« on: December 21, 2012, 06:43:45 PM »
What is going on with lasersoftstore.com ? Seems to be down since 24.11 due to not paid domain  Did they close their business? I Need t purchased more LS20/20'S ASAP Any one know wgats going on?

MilesTag

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Re: LS 20/20
« Reply #1 on: December 22, 2012, 10:05:19 AM »
No idea.  I guess if they are out I can remove that sub-forum at some point...

heningto

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Re: LS 20/20
« Reply #2 on: December 08, 2017, 12:42:08 PM »
Anywhere to get these LS20/20 still or is there something new/better?  Everyone just using focus tubes with lenses?

heningto

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Re: LS 20/20
« Reply #3 on: December 08, 2017, 08:15:03 PM »
Will this work?

12*45mm DC3.0V Focusable 808-810nm 300mW Infrared IR Diode Laser Dot Module

https://www.ebay.com/itm/12-45mm-DC3-0V-Focusable-808-810nm-300mW-Infrared-IR-Diode-Laser-Dot-Module-/263288168144

?

ezio

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Re: LS 20/20
« Reply #4 on: December 09, 2017, 11:52:05 AM »
That one probably won't work because it warns of eye damage in the ad.  The LS20/20, if I recall, was supposed to be safer for eyes. 

berk

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Re: LS 20/20
« Reply #5 on: December 09, 2017, 03:32:36 PM »
300mW is dangerous. Class 1 lasers which are certified eye safe are <=1mW. Be careful with these Chinese listings. You may find yourself in a whole heap of legal trouble.
I am not a lawyer!

istarion

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Re: LS 20/20
« Reply #6 on: April 24, 2018, 08:04:17 AM »
This would appear to fall into the necessary specifications of 1mv and 850nm. It is a Class II laser, which appears to be acceptable for consumer use in the United States.

https://www.edmundoptics.com/lasers/laser-sources/1mW-850nm-Alignment-Laser-Diode/#specs

berk

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Re: LS 20/20
« Reply #7 on: April 24, 2018, 01:25:00 PM »
Don't forget that the TSOP 4856 sensor is most sensitive at 940nm. A 85-0nm signal will reduce sensitivity by 60%. See figure 5 page 3 of https://www.vishay.com/docs/82459/tsop48.pdf

istarion

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Re: LS 20/20
« Reply #8 on: April 24, 2018, 01:39:54 PM »
Thank you berk, that's good information. I had been under the impression the LS2020 operated at 850nm, so I figured that was the optimal frequency.