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Old 02-03-2014, 03:49 PM #273
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Default Re: GB: 1W 520nm diode information/giveaway

Quote:
Originally Posted by Jmillerdoc View Post
I find it really strange that it seems everyone sees their 638nm beam brighter than the 445nm even at much lower powers. I have two 638nm, one running around 600mw and the other near 1w and neither of them look anywhere as bright as my 1.8w 445 beam, in fact the beams on both of my 638nm are not very visable at all. The blue completely obliterates them in visibility AFAIC. I've also got a couple "burner" blues doing around 3.1-3.4 watts each and the beams look about twice as bright as the 1.8w and I've heard it takes a four fold increase in power to perceive a doubling in brightness. In the end this is clearly dealing in the territory of subjectivism but I would think my experience would at least resemble a close approximation of what I am hearing on these threads. I am starting to wonder if there really are a few people (me) who are outliers from the curve and very sensitive to certain colors. I wish I could hook up with a few of you and bring my lasers with me to do some experimenting with this. I guess I could even ask a few friends of mine to give me their opinions on brightness with my collection.

I am so very close to just dropping $800 on one of DTR's diodes. It's too much to hear all of this talk and not be tempted to "just do it". If these were $400 I would have been one of the first to buy. My mind is playing tricks on me now "400, 800, what's the big difference". I'm so addicted to this stuff. Glad I never tried crack.....
I agree 445nm is brighter than 638nm (beam), but not by much. A 400mW 638nm beam is very visible to me - not bright, or solid, but very visible.

My 3W doesn't look even 50% brighter than my 1.3W. Even side by side. Even considering the 3W is a higher wavelength by almost 10nm and looks far "bluer".

Yeah, perception is a bitch :P

Quote:
Originally Posted by ARG View Post
Thanks for sharing it!
If you intend to improve/make a new tool let me know. I think I can find you the scotopic data

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Originally Posted by rhd View Post
It's all good - it wasn't your comment that triggered this. Well - triggered perhaps - but taking it offline was something I had wanted to do for a while. I just don't have the time to make all the improvements I always wanted to make.

It's actually better to have no calculator at all, than one that is inaccurate. When there are sub-optimal options that "sort of work", people tend to keep using them. Think about how long we continued using FlexDrives even though they didn't do the job right. People used to parallel two of them together just to get the current they needed. It wasn't until there was a shortage of FlexDrives, and people weren't able to build, that the community came up with better options, and now we've got tons of great drivers.

That's the deal here. I'm not saying "I'll take my marbles and go home". I'm saying "here, you can have my marbles, turn them into something great!"

You guys are all welcome to use the code. Once there is a new tool (or tools), I'll put up redirects and send the traffic in a new direction
I understand, thanks for sharing the code! Unfortunately no calculator will ever be accurate due to lack of good data, unless we do as Jmillerdoc said and set up a mass experiment. Even then variations in perception will still be an issue...

Quote:
Originally Posted by kaunak View Post
That is really a beautiful picture. You should make a poll and ask "which laser appears the brightest". If I had to answer honestly I'd say that they all look fairly equal in brightness, despite the red being slightly dimmer. That's the thing when trying to compare monochromatic light. It's definitely not as straightforward as say comparing a 100 lumen and a 200 lumen flashlight with similar beam characteristics. Even with only a 25% brightness increase, the difference is very clear. It's simple to compare the brightness of two lasers with the same wavelength, but when you compare multiple wavelengths it really is a matter of personal perception.(unless of course you compare 1w of 520 vs 445, green is always brighter in those scenarios. although some people might even disagree). I'd vote to keep the calc regardless, but I understand if he wants it removed because of random confusion
I'd say green and blue look the same, red looks somewhat weaker. But this depends far more on the camera and monitor variations than on the power of the lasers in question.

Quote:
Originally Posted by Tha Greenlander View Post
Quick find that may be of interest...

Looked up the 1W 520nm on O-like earlier today, and the new price for the 1 diode is $848!!!!! If this keeps going down in price, this diode could be just a few hundies in a couple of months
O-like has had them for $720 for a few weeks now (but be sure to buy from DTR).


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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)
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 02-03-2014, 04:07 PM #274
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Default Re: GB: 1W 520nm diode information/giveaway

I never trust pictures when comparing brightness unless I have a real world comparison. Even then, camera CCD's pick up blue brighter than it appears to the human eye (in my experience)

I think greenlander meant their complete build is $848... Meh, still too much for me.
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502nm 85mW badboybilly host
510nm 90mW PLANNED
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Old 02-03-2014, 06:12 PM #275
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Default Re: GB: 1W 520nm diode information/giveaway

@Atomic, yes I do intend to improve it, just have to dig for data now. I would like to add beam size to the calculations as well.


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Old 02-03-2014, 06:18 PM #276
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Default Re: GB: 1W 520nm diode information/giveaway

Quote:
Originally Posted by ARG View Post
Sent from my mobile. Sorry if there is any spelling errors.
are

---or---

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Sent from my mobile. Sorry if there is any spelling errors.
error




You should know better *



* haven´t seen these specific emoticons for a good while now
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 02-03-2014, 08:00 PM #277
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Default Re: GB: 1W 520nm diode information/giveaway

I'm sorry don't hurt me


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Old 02-03-2014, 10:02 PM #278
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Default Re: GB: 1W 520nm diode information/giveaway

I hope I'm not the only one itching to see where this diode goes. Testing left to do or not lets get the fate of this diode decided
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Old 02-03-2014, 10:28 PM #279
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Default Re: GB: 1W 520nm diode information/giveaway

Quote:
Originally Posted by TheDukeAnumber1 View Post
I hope I'm not the only one itching to see where this diode goes. Testing left to do or not lets get the fate of this diode decided
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 02-06-2014, 02:16 PM #280
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Default Re: GB: 1W 520nm diode information/giveaway

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I'm talking with a member who may want to do some more tests with the diode (beam size & optical correction). If that falls through I'll shoot a PM off to Dave to pick a number between 1 and 93
What's the status on the testing, will it be posted?
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Old 02-06-2014, 04:04 PM #281
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Default Re: GB: 1W 520nm diode information/giveaway

The beam correction test will be posted, yes. Waiting on a reply.
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Old 02-10-2014, 06:56 PM #282
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Default Re: GB: 1W 520nm diode information/giveaway

Update on the diode, it is being sent out to a member for beam size and correction optic testing. The data will be posted once it is collected
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Old 02-12-2014, 12:58 AM #283
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Default Re: GB: 1W 520nm diode information/giveaway

- Who?
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Old 02-12-2014, 01:13 AM #284
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Default Re: GB: 1W 520nm diode information/giveaway

He probably wants to remain anonymous.
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Old 02-12-2014, 01:36 AM #285
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Default Re: GB: 1W 520nm diode information/giveaway

I'm guessing CDBEAM. Can't wait for results...more so, I cant wait for the price to come down..
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Old 02-12-2014, 01:58 AM #286
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Default Re: GB: 1W 520nm diode information/giveaway

Quote:
Originally Posted by crazyspaz View Post
I'm guessing CDBEAM. Can't wait for results...more so, I cant wait for the price to come down..
No.....NOT ME !!! Although I predict the NDG-7475 WOULD benefit by passing it thru a set of Anamorphic Prism's !!!!!!!!!!!!!!!

Depends on " ow tight ya want yer beam laddie " !!!!!!!!!!!!

The use of a set of A-Prism's is MORE involved than just using a different lens !! The beam MUST enter the prism set at the correct radial angle !!
There is NO way around this !!

But...if you think about it...we use add-on beam expanders now...NO big deal...other than added length !! A set of Anamorphic prism's COULD be built into a Beam Expander style Add-on....one would need to be able to rotate the unit...to achieve the correct radial angle....That's all !!!

Anamorphic prism's are much, much easier to use than Cylinderical lenses !!!
I have used both !!! Way, way back when the 445's first came out....I did a thread showing a pair of Anamorphic prisms...in a holder that fit over then end of a small build. All you had to do was twist the holder till the correct radial angle was achieved....then tighten down a small set screw...Mmmmm..." Set it and Forget it "

Anyway...I cannot wait to see the findings !!!...And for the price to get outta the ______ Clouds !!!

CDBEAM=======>

Note: See the "Green Extreme" drawing attached...one way ta do it ... IF it needs doing !
Attached Thumbnails
GB: 1W 520nm diode information/giveaway-green-extreme-v2.jpg  

Last edited by CDBEAM777; 02-12-2014 at 03:40 AM. Reason: Added Green Extreme reference
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Old 02-12-2014, 02:01 AM #287
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Default Re: GB: 1W 520nm diode information/giveaway

31 people right now have a share in this diode, I trust you 100% ARG, but something just doesn't seem right about it changing hands anonymously.

Edit: Unless we have some wordplay going on here.
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Old 02-12-2014, 02:59 AM #288
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Default Re: GB: 1W 520nm diode information/giveaway

I think I know who it is. I'm not at all worried.
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