515nm Forest Green Diode Laser Pointer

I am curious with the color of 515nm green diode laser pointer? It is greatly different from 532nm green laser?

I cannot imagine what is the color of forest green? Is it brighter and visible than a usual 532nm green DPSS laser?

515nm will be brighter at night time due to peak sensitivity of the human eye switching from 555nm to 507nm.

The video below shows the difference between 515nm/532nm

thank you, i get it.

Tha Greenlander said:

515nm will be brighter at night time due to peak sensitivity of the human eye switching from 555nm to 507nm.

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Under dim natural lighting conditions scotopic sensitivity is predominant, but not in the case of comparing 532nm to 515nm light. In this case the response is photopic.

Although if you are viewing the beams in a stargazing situation, they will not increase lighting so I imagine in that situation it would stay scotopic. That logic may be flawed but it makes sense to me.

I feel compelled to mention that in the vid the greenlander posted, the comparison is 532 and 520, but a true 515 should look blue-er than 520.

Here are the best pics I have taken to show the difference.

Neat video. I love my 515nm... such a cool color.

If I'm not mistaken, the 532's out in the consumer market today are all DPSS where as you can get a directly driven 515 or 520... If I have to only pick one, I'd go with the 515nm. It's just personal preference though...

cheers,
c

I need 515 where can I get one for my plug snd burn host?

ru124t said:

I need 515 where can I get one for my plug snd burn host?

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BURN uh??

If that is required this one may not be for you- BUt I like these a LOT and they are caveman easy to use in a build- needing 3 to 5 vdc and already inside an AixiZ 12x30 module w/ focus lens & with the driver embedded inside-red/black leads attached for you-----$85 from aixiz.com- click 532 on the right and look for it- peaks at 26mW very flat line graph - should not require a huge heat sink- it comes delivered in a module 'mount' ( too small & too loose fitting to really call it a heat sink)- will it burn?? maybe -BUT - IDKFS buring things had become boring a long ago for me. You will NOT find these cheaper as they are exclusively AixiZ items...tell 'em I sent you:thanks::thanks:
........Len

My burning phase lasted a few weeks... now its about beam quality and aesthetic appeal of pure colors and such. I cant explain why I love lasers so much but burning things is what triggered my craze. I love the 515 color. 478 is my favorite if I got the wavelength right... but 26mw won't burn anythjng but a small hole in thin dark plastic... if that. Focusing has everything to do with burning capability though. 26mw focused to a pinpoint would probably burn ... well something.

plug and burn means solder two wires and you have a laser . Not burning things and I love green wavelengths too. It is a way for us noobs to quickly build a laser

Oh ok sweet good to know and thAt is perfect .. now I know what to ask for! I have no confidence that I can build a laser unless its simply soldering your positive and negAtive wires. But even so unless the spot where the connection is made is highlighted and includes a sign with an indicator arrow I still do not trust myself. Im a certified tig welder but small electronics always go bad for me...

ru124t said:

plug and burn means solder two wires and you have a laser . Not burning things and I love green wavelengths too. It is a way for us noobs to quickly build a laser

Click to expand...

LOL maybe a 'Newfie' calls these plug n burn but we are more familiar with plug n play ...same thing--

xirrious said:

Oh ok sweet good to know and thAt is perfect .. now I know what to ask for! I have no confidence that I can build a laser unless its simply soldering your positive and negAtive wires. But even so unless the spot where the connection is made is highlighted and includes a sign with an indicator arrow I still do not trust myself. Im a certified tig welder but small electronics always go bad for me...

Click to expand...

see this

http://www.aixiz.com/store/product_...d/446/osCsid/a250bb189f8777970c999a943965e5a2

Looks spendy BUT you do get a plug n play laser 12x30
module that comes in a OKish module holder ( too small & too loose to really call it a heat sink IMHO)-- the driver is already embedded ijn a standard AixiZ 12X30 blank module the two leads are plenty long & this laser works great on a SINGLE 3.7 vdc Li-ion batt- ran one as-is for 15 min test barely got warm and it was flat-line 26mW tested 4 others same results-

I requested AixiZ to get green diodes -- and Dr Chuck chose to have these made exclusively for AixiZ-

not very many have sold IIRC and those that did buy may have NOT mentioned either LPF or me- tsk tsk

I cannot help the forum with getting new items added if you fail to mention me by name- you 'might' even get free shipping- wont hurt to ask- ALSO if you order DO ask for the new and better module holder these come with as its a tighter fit ( we all like tight things!!) and has 'some' fins BUT I stil suggest a bigger HS if you plan to run these all day--

these are 85$ at AixiZ- never order AixiZ from Greedbay or Amazon- go instead to aixiz.com

I will throw in the first 20$ towards a 'murder fund' to test one of these to death- as a complete module this has NOT been done yet.
the bare diode yes BUT not this module afaik


The color is nice and whenever we look at two different wavelenghths at the same time sometimes color shift happens because of our eyes only-- eg a common green pointer looks VERY YELLOW in the presence of a SL 488nm Argon- and not just a little yellow either ...a very lemony color yellow- turn off the Argon and its back to green-weird uh??

edit
to ru214t
see this

http://www.aixiz.com/store/product_i...999a943965e5a2



BUT very unlikely you will be able to do much 'burning' with only 26 mW
__________________

Thank you, if I order I will indeed mention your name!

the aliexpress ~$70 usd pointer i have comes in at 511nm and ~26mw. The blue hue added to the green is very apparent. Dollar for Dollar one of my favorite laser buys.

532 v 511

http://laserpointerforums.com/f52/aliexpress-515-520nm-20mw-pointer-85888.html
^^ cyp's review