Old 08-12-2016, 06:20 PM #65
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Default Re: Holy @#$%... $120 488nm diode!!

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Originally Posted by ZRaffleticket View Post
Edit: Just so everyone is aware, as someone who got his hands on one of the 473nm diodes styropyro got a while back, these will probably fluctuate wavelength a good bit per power. The more you give them, the greener they'll be.
That was right with DoRam 488 nm too.


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Old 08-12-2016, 06:42 PM #66
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Default Re: Holy @#$%... $120 488nm diode!!

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Originally Posted by astralist View Post
Have not seen both 473 & 488 for awhile but they're much better than this picture
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Old 08-12-2016, 07:32 PM #67
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Default Re: Holy @#$%... $120 488nm diode!!

Is it single mode?
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Old 08-12-2016, 08:13 PM #68
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Default Re: Holy @#$%... $120 488nm diode!!

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Is it single mode?
The OSRAM PLT5-488 is single mode
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Old 08-13-2016, 05:06 AM #69
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Default Re: Holy @#$%... $120 488nm diode!!

Any word yet Jordan?
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Old 08-13-2016, 06:35 AM #70
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Default Re: Holy @#$%... $120 488nm diode!!

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Originally Posted by astralist View Post
WOW!! i want one!!
But, it could have been a typo and really is 750 GBP LOL

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I've been thinking about those. I've seen 445, 450, 473, 488, 520 and 532. The 488 did not seem brighter than 520 or 532. Considering that 555 is at the peak during the day, I'd expect the 520 and 532 to also appear brighter.
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Old 08-13-2016, 06:57 AM #71
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Default Re: Holy @#$%... $120 488nm diode!!

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Originally Posted by Dr_Evil View Post
I've been thinking about those. I've seen 445, 450, 473, 488, 520 and 532. The 488 did not seem brighter than 520 or 532. Considering that 555 is at the peak during the day, I'd expect the 520 and 532 to also appear brighter.
He is using the 1951 scotopic vision chart -- scotopic vision is produced exclusively through rod cells which are most sensitive to wavelengths of light around 505 nm (green-blue) and are insensitive to wavelengths longer than about 640 nm (red). The sensitivity to light in scotopic vision varies with wavelength, though the perception is essentially black-and-white. The Purkinje shift is the relation between the absorption maximum of rhodopsin, reaching a maximum at about 500 nm, and that of the opsins in the long-wavelength and medium-wavelength cones that dominate in photopic vision, about 555 nm---so the relative brightness calculations don't reflect actual subjective human vision/perception in the real world.

As one member put it here in post #29 here: http://laserpointerforums.com/f44/ne...m-61238-2.html
"There is one glitch with the scotopic curve where lasers are concerned, however - it is rather unlikely for a person to view a typical laser beam using scotopic vision! In fact, I can't remember EVER viewing a laser beam with scotopic vision!
Here's a big hint...if you can even vaguely tell what color the laser beam is, then you are not seeing it with scotopic vision!
What you are using when you view a laser beam under subdued or nighttime conditions (but can still tell what color it is), is mixed-mode vision (both rods & cones active).
In this case, the response curve is the combination of both the photopic and scotopic curves! The relative ratio of each will depend on how active each visual system is - the darker it is, the more it will shift away from photopic and towards scotopic."

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Old 08-13-2016, 08:45 AM #72
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Default Re: Holy @#$%... $120 488nm diode!!

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Any word yet Jordan?
Have not heard back from him yet.
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Old 08-13-2016, 08:53 AM #73
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Default Re: Holy @#$%... $120 488nm diode!!

Man I hope it's not a typo, I want 2 ASAP!

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Old 08-13-2016, 02:09 PM #74
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Default Re: Holy @#$%... $120 488nm diode!!

This is wonderful news, I'm probably in for a GB!
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Old 08-13-2016, 03:21 PM #75
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Default Re: Holy @#$%... $120 488nm diode!!

Hopefully that just means a wait until Sunday night/Monday. I'm in for two.
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Old 08-13-2016, 04:01 PM #76
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Default Re: Holy @#$%... $120 488nm diode!!

Quote:
Originally Posted by Encap View Post
He is using the 1951 scotopic vision chart -- scotopic vision is produced exclusively through rod cells which are most sensitive to wavelengths of light around 505 nm (green-blue) and are insensitive to wavelengths longer than about 640 nm (red). The sensitivity to light in scotopic vision varies with wavelength, though the perception is essentially black-and-white. The Purkinje shift is the relation between the absorption maximum of rhodopsin, reaching a maximum at about 500 nm, and that of the opsins in the long-wavelength and medium-wavelength cones that dominate in photopic vision, about 555 nm---so the relative brightness calculations don't reflect actual subjective human vision/perception in the real world.

As one member put it here in post #29 here: http://laserpointerforums.com/f44/ne...m-61238-2.html
"There is one glitch with the scotopic curve where lasers are concerned, however - it is rather unlikely for a person to view a typical laser beam using scotopic vision! In fact, I can't remember EVER viewing a laser beam with scotopic vision!
Here's a big hint...if you can even vaguely tell what color the laser beam is, then you are not seeing it with scotopic vision!
What you are using when you view a laser beam under subdued or nighttime conditions (but can still tell what color it is), is mixed-mode vision (both rods & cones active).
In this case, the response curve is the combination of both the photopic and scotopic curves! The relative ratio of each will depend on how active each visual system is - the darker it is, the more it will shift away from photopic and towards scotopic."
Interesting. For me, viewing a low powered 405 in a dark room mostly renders it as grey, perhaps that's one of the only cases it comes into effect.
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Old 08-13-2016, 06:18 PM #77
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Default Re: Holy @#$%... $120 488nm diode!!

Quote:
Originally Posted by trencheel303 View Post
Interesting. For me, viewing a low powered 405 in a dark room mostly renders it as grey, perhaps that's one of the only cases it comes into effect.
Agreed, only time I've ever seen a gray beam was my "5mW" 405 wish night vision adjusted, and sometimes my lower powered 473 labby when it's just warming up.
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Old 08-14-2016, 01:00 PM #78
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Default Re: Holy @#$%... $120 488nm diode!!

I can confirm I only see in scotopic mode with low power 405nm and only when it's completely dark. The beam looks greyish and brighter than usual.

I don't think it's reasonable to use the scotopic curve for beam brightness comparison at all.
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405nm: NewWish (29.1mW avg|5mW rtd) | Dilda (81.5mW avg|200mW rtd) | 501B by Blord (633mW pk)
low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
480nm: hostless by Atomic (125mW pk)
505nm: hostless by Atomic (103mW pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

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Old 08-15-2016, 05:22 AM #79
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Default Re: Holy @#$%... $120 488nm diode!!

Any news DTR?
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Old 08-15-2016, 04:29 PM #80
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Default Re: Holy @#$%... $120 488nm diode!!

Count me in for two if there is a group buy
Assuming these diodes are 488 proven.
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