1.4W 462nm Laser Diode

[DTR]

Certainly will have an effect on life. Have you ever felt the block of the projector when they are running. They may not drive them as hard but they run hotter than I would ever feel comfortable with. The block will burn you after about 15 minutes being on even with the fans cooling it.

[steve-o]

Yep, dealing with thermal management issues myself .. fun stuff.. ;] Looking forward to the progress that we can all make on this

[lasertack]

Yep really need to get one myself. It is on my list of equipment to acquire. I don't doubt it is hitting 460nm+ but the 445's have been known to run as high as 455nm specially when driven hard.

You can find spectrometers on my website.
Take a look at http://lasertack.com/en/light-analysis
if you find something interesting, pm me for a special price.

Alex

[DTR]

You can find spectrometers on my website.
Take a look at http://lasertack.com/en/light-analysis
if you find something interesting, pm me for a special price.

Alex

Thanks will check with you when I am ready to pull the trigger.

[planters]

I have a spectrograph and I'm sure others have them, but these diodes are going to be so variable that if you test one and get say, 462 this doesn't mean much. The one Steve gets may be 455 or 470. On top of this his "445" may be 442 or 448.

I see one possible use for these while waiting for the longer wave blues. In a quad module you could incorporate two of these to give some more blue and less violet to the mix. This would tend to average out the variability and the amount of difference is not critical. It's just a benefit.

[steve-o]

455-470nm says the spec-sheet on post #1. That's almost a +/- 20% tolerance which is very sh*tty for any electronic component (except for large electrolytic caps, which is [or used to be] acceptable.) Looking forward to seeing your spectrum analysis results Lasertack, and you too Eric if you're so inclined .. (I know that you're equipped for it ;] I wonder how much of a wavelength shift would make a noticeable difference from 445nm dark blue to a noticeably brighter lighter blue. Apparently it's a very minor difference with this diode. I guess someone could be selling "455-(462)-470" diodes specced as such but all being 455 if said seller (I don't know who this seller is) is unethical.

[norty303]

I find it interesting that a lot of sellers are suddenly selling single diode 1.4W '462' modules and claiming the same brightness as 3.5W of 445
Methinks someone somewhere did some rough theoretical sums, posted the information, and everyone selling these has jumped on it as if gospel truth...

Regardless, yesterday I purchased a pair of the 462 diodes and they'll be going into dual blue builds - one 445 and 462 diode per module. So not far off what Planters was suggesting 2 posts above.

The modules will use a dual driver for blue so we can play with the relative balance of the 2 mixed diodes.

Hopefully there'll be some pics to share in the not too distant future.

[steve-o]

Great! Glad you took the plunge Norty. Looking forward to some pics and commentary. I may end up getting a couple anyway too .. anything to get above 445. Remember the same struggle back when 660nm diodes were the only ones available? They were a bit dim too..

[DTR]

norty303

They went out today. Should be there in a day or two.

[logsquared]

They went out today. Should be there in a day or two.

Sweet! I have Norty's module here waiting for 'em. Unfortunately, I don't have a spectrometer. I will use a diffraction grating to see if I can measure the difference compared to regular 9mm. Also will see how well they work with Dave's new blue PBS and group buy WP.