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Old 09-01-2017, 08:21 AM #1
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Smile B&Wtech 473nm unit / Spectrometer Mods & Info

Hi members
I've made this thread to gather and congregate all the info we have and find out about the setup, modifications, technical info and experiments with the B&Wtech 473nm "functioning" & "non-functioning" units available from ebay.

Also this included the on-board Spectrometer inluded with the unit, and any info related to it.

Thought it would be easier for future reference

Thanks


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Old 09-01-2017, 08:21 AM #2
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

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Old 09-01-2017, 08:23 AM #3
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Information i've imported from other threads so far....

Quote:
Originally Posted by CynicalBrad View Post
I do have the software and it throws a ton of errors keeping it open but it may be that it is seeing no com ports open to connect to. I still can't find either my arduino or my usb to 9 pin serial convertor so I haven't been able to make any progress aside from popping it open to see an astonishing lack of baffles in it.
Probably about to order a usb>serial convertor off amazon so I can try to get this thing at least spitting out numbers.

EDIT: convertor ordered. Will have it in my hands sunday at some point according to amazon.
Quote:
Originally Posted by paul1598419 View Post
My experience with spectrometer software is that it should just sit there waiting for a spectrometer to be scanned into the system. If you are getting all kinds of errors with it after loading, it likely won't work with the spectro attached. That has been my fear after reading what the seller or their company has done in an effort to get one running. It sounds very screwy.
Quote:
Originally Posted by CynicalBrad View Post
Error 1 (ocurrs on launch) is complaining about a missing image.
System.IO.FileNotFoundException: 390to650.png

EDIT: Took random image of ~800-400 size and named it as that name and this error is now gone and that image became the background image.

Error 2 (occurs on trying to take reading) is complaining about the port being closed.
System.InvalidOperationException: The port is closed.
Seems there may still be some luck after all.

It strikes me as odd that an image that suggests the range is supposed to be 390nm to 650nm is missing when these were supposedly narrow range spectros in these assemblies.

Attached a debugger to the program and it's name is "BWSpectro" This is most likely the software from the manufacturer just modified to hide that fact on the surface.
Quote:
Originally Posted by diachi View Post
Laser Controller Power Pinout:



Found here (there's other pinouts for the controller too): Sam's Laser FAQ - Commercial Solid State Lasers

Lots of good information on this thread for the laser (none for the spectro IIRC): https://www.photonlexicon.com/forums...le-info-thread

I'd try the standard RS232 pintout for the serial connector.



Quote:
Originally Posted by paul1598419 View Post
That's a bit confusing, as it isn't what I was told by a seller who has a half dozen or more of these. I wonder if there is something in the CCD setup that limits its range. I'll know more once i get into it. BTW, if you touch any part of the optics you can ruin them from the oils on your hand. This is especially true of the grating. Be very careful when you have the cover off the optical bench.
Quote:
Originally Posted by CynicalBrad View Post
Translated from the following page:Was a link to some Some Czech auction site until they killed the link.
Searching for "BPS473" is what yielded this result.

"The Biophotonic Scanner is the world's first measuring device that determines the Carotenoid Value in the Skin (SCS) - an instant recording of carotenoid antioxidant activity in your body. By simply placing your hand in front of the faint blue light, you can get your Carotenoid Value in your skin within minutes. The Pharmanex® Biophotonic Scanner Technology is based on an optical method known as Raman Resonance Spectroscopy. This technology has been awarded the Nobel Prize and is used for biological measurements, as well as scientific discipline supported by years of research. Thanks to Pharmanex, technology is now available to everyone. The scanner uses optical signals to measure carotenoid levels in human tissue just below the skin's surface. These signals identify the specific molecular structure of carotenoids. Pharmanex® is the exclusive holder of the patented Biophotonic Scanner technology. The scanner was developed by physicians and physicists at the top university in the United States"

EDIT: Knowing it's original purpose, it does not surprise me that there are no baffles in the spectrometer on these. Will not at all be surprised to be able to hook it up and use it as is just as soon as I find either my arduino or my usb to 9 pin serial converter. Just have to hope it has a decent range that it can read.
Quote:
Originally Posted by paul1598419 View Post
After looking at the optical bench, I was able to identify the collimating mirror, diffraction grating, focusing mirror and CCD. Can't say that it's configured to read all of the VIS spectrum, but it does have everything necessary to do so.
Quote:
Originally Posted by diachi View Post
Collimating mirror is the smaller concave mirror, grating is the flat optic and focusing mirror is the wider concave mirror I take it?

Edit, for reference in case anyone needs it:



I posted that link earlier in the thread. Don't recall seeing anything about the spectrometer in there though, just the laser head and driver.
Quote:
Originally Posted by Alaskan View Post
Wow, beautiful! Tks for posting those pix diachi.

Here's Brad's photo of the spectrometer, I had a hard time finding it again because it was a link, kept going back too far in the thread. Thought it was an embedded pic.



Atomicrox, no problem getting a spectrometer, I bought plenty of these units, 15 total I wanted to make sure we nabbed some for members who might want them later, if this spectrometer works out well, if not, I have lots of DPSS project parts!
Quote:
Originally Posted by diachi View Post
I'm glad these are the ones with the pump correction optics and not the other ones with just the pump focusing lens, like the last one I had.

Lots of space for a DPSS build or just a pure diode build.






IIRC, they don't have the output collimation optics on them as shown above. Not sure about pump correction optics, definitely at least two "focusing" lenses and an anamorphic prism pair though.
Quote:
Originally Posted by paul1598419 View Post
Well, I got the spectrometer out today and then started looking at the pdf files and other information sent along with it. It uses an RS232 connector for interfacing with a computer with applicable software to run this thing. I see a possible problem in that the "free software" to run it might not work at all. This would necessitate someone purchasing the software from the manufacturer. It could, in theory, be shared among all the users of this spectrometer. Well, back to the fight.
Quote:
Originally Posted by paul1598419 View Post
I haven't looked at it yet, but after reading what the seller has done in attempting to get it to work gives me pause. They opened the spectrometer and it came up with a large binary compression dump of data at a baud rate of 9600 bps. This caused errors and "distortion of data". It was found that if it was closed and reopened at a baud rate of 115,2000 bps they were able to link to MS Excel. I have gone to the B&W Tech website and found BWSpec which looks like it was made to run this without problems. I am still trying to figure out what they sent and if it is even compatible with this spectro. So far, I am not encouraged.

Last edited by jnrpop; 09-01-2017 at 11:17 AM.
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Old 09-01-2017, 08:58 AM #4
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

I think you could combine all these posts jnrpop

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Old 09-01-2017, 09:59 AM #5
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Glad this thread was made, looking forward to anything added to it.


Above: http://www.ebay.com/itm/5x-Blue-Ligh...-/162655923617

Photo, below, of the goodies which can be had out of one of these Pharmanex BPS 473 Biophotonic Scanner units
(Tnx Brad, edited in from his post further down):



Above photo from a way over priced ebay listing: http://www.ebay.com/itm/B-W-TEK-lase...-/221804145130

From an early ebay listing, appears these have been listed for years:

Quote:
This 473 nm laser was formerly incorporated into a medical device. It was manufactured by B&W Tek, a company still actively selling similar lasers today. It is shipped with everything you need to start using it immediately. The manufacturer gave the following specifications when the lasers were new:

Intracavity doubled, diode-pumped YAG laser at 473 nm
Spatial mode as TEM00
10 mW max output power
Class IIIb laser product
CW operation

but the lasers do not necessarily meet this specs now. Typical regulated output power is 5 mW on these units when removed from the medical device, and can be adjusted somewhat. Running the laser in unregulated mode can achieve higher power, but will shorten the lifetime. We have tested that the laser turns on and that the beam quality appears reasonable by eye, but the lasers are otherwise sold as-is.

The laser can run on either 110V or 220V, but does not include a power cord. A standard C13 power cord (the type used with most desktop computers) will be needed to plug the laser in.

The parts inside the head include a 1.5W (typical) 808nm (typical) laser diode, collimating lens, anamorphic prism pair, and a focusing lens.

This is a class IIIb laser product. Care is required to prevent damage to the eyes. The power supply is open and has exposed line voltage. Caution should be used to prevent electrical harm to the user.
- - - - - - - - - - - - - - - - - - - - - - - - - -

Below screen capture photo from a long LPF thread on these units. LINK: B&W Tek BWB-10-OEM - 473nm 10mW - Unfortunately, most of the photo's no longer work.



- - - - - - - - - - - - - - - - - - - - - - - - - -

Here's a LPF thread from a member who used parts from one of these to build a 473 nm pointer - LINK: DIY 473nm / FRANKEN-TEK B&W Transplant To Handheld With TEC

Quote:
Firstly, this project has been on my mind since acquiring my first 473nm labby made by
B&W / CNI.

I decided to gut a working labby which I had previously re-aligned. To minimize the guess work
I wanted the best crystal set I had out of the surplus lot purchased. I machined the head
taking extra care to get the mount good and centered. With a manual mill, this can prove
difficult at times.

So far I have only mocked up the head, and am not at the point where I begin hard mounting and
alignment.

My first sought after achievement on this was getting some 473 light out. I have the pump,
a 3W CNI 808 with FAC and collimator as the muscle currently running at a mere 600mW.
As I progress on this build, I will slowly increase, but only during the final fine tuning stages.

I have yet to wire the control for the TEC, and the diode is running on bench supply for
the time being.

Anyways, enough rambling, here are some pics and a short video filmed through my 808 goggles
which is what it appears foggy.
- - - - - - - - - - - - - - - - - - - - - - - - - -

A WordPress web page showing another project using one of these - LINK: https://alexanderimpertro.wordpress....le-dpss-laser/

Quote:
B&W TEK BWB-10-OEM 473nm blue Lab-Style DPSS Laser

27. October 2015 aimpertro Allgemein, Lasers
This week, a new goodie for my laser collection arrived. I always wanted to own a 473nm laser because of the awesome, azure blue light. In comparison to this, the 445nm Nichia Diodes almost look violet.

Despite many of the units, which are apparently pulled from medical equipment, suffer from power and mode fluctuations, mine arrived lasing in a nice TEM00 mode out of the box.

The divergence is not that good, but I guess a bit of realignment should do the trick. As mine arrived without the power supply, I had a bit of fun figuring out the power supply lines on the D-SUB connector.

It turned out that pins 5&9 on the standard DB9-Pinout are connected to VDD, and pins 1,2&6 to GND. Pin 4 is the TTL modulation input, the laser will fire when this pin is pulled high. The driver board must be connected to a 5V supply with a nominal current rating of at least 4A.
- - - - - - - - - - - - - - - - - - - - - - - - - -

Russian language web page showing a project using one of these - LINK: http://lasers.org.ru/forum/threads/b...3nm-10mw.1962/

- - - - - - - - - - - - - - - - - - - - - - - - - -

Really great photo's on this google web page: https://sites.google.com/a/dtaviation.com/lasers/dpss

- - - - - - - - - - - - - - - - - - - - - - - - - - -

Bringing over more photo's showing the DPSS and driver (laser made by CNI under contract from B & W):












- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

YouTube video's of parts from one of these units modified to fit in a pointer head, one from swissrocketman showing an operating unit, Styropyro and Adrian
from 2011. Edit: One last YouTube link was just added in from Zenodilodon showing some of these 473 nm units converted to just 808 nm output as well as one where he removed the 473 nm LBO and added a KTP crystal to produce 532 nm green:





- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


The following ripped from another forum: https://www.photonlexicon.com/forums...?highlight=473




Quote:
...Thanks mophead, great shots! I see that you have a newer, version 5.0 board which has two additional pots in comparison with the version 4.0 board.

drlava has confirmed that the pot closest to the laser head DB connector sets the maximum output with the regulation photodiode assembly in place.

I can't swear to it, but I believe the pot I've labeled 3, at least on my version 4.0 board, controls the maximum diode current. For me, turning this pot two revolutions yielded 50% higher output even with the pickoff assembly attached. I made about one-quarter turns each time and a slight increase in power was seen nearly immediately after turning the laser on, although it seemed to take a little bit longer for the green stabilization LED indicator to go off each time. If I remember correctly, the laser head ran noticeably warmer as well.

- Kyle
Quote:
Originally Posted by Kyle View Post
Yep, without going so far as to connect the diode in series with a multimeter, I've nearly confirmed that the pot I labeled 3 on mophead's photo of the driver board controls the diode current, at least on the version 4.0 boards that have three pots total. If I remember correctly, turning pot 3 counterclockwise will decrease the diode current.

If you do this, be sure to mark the original position of the pot if you want to return the laser to its original output later. Also turn the pot in small increments to be sure that I'm correct on the direction of rotation.

EDIT: I believe these lasers accept TTL modulation via the thin black and white wires coming from the power supply. The seller twisted them together so that the laser would fire immediately after the 5 second emission delay. I'm not sure what the maximum modulation frequency is, however.
Quote:
Originally Posted by krazer View Post
aI am sorry I haven't been able to add much to this thread due to general lack of time, but I have got the serial ports working, it has 2 serial ports, which I am going to call 1 and 2. They are available from J10, and are RS232 compliant (can safely be connected directly to a computer). I haven't been able to figure a whole lot out, but it appears that one of them is associated with the automatic temperature tuning, and the other one lets you 'talk' to the laser.

Port 1: (general laser control)
9600 baud, 8 data bits, no parity, 1 stop bit
TX - pin 7/8 (connect to pin 2 on a normal db9 serial port)
RX - pin 9/10 (connect to pin 3 on a normal DB9 serial port)
Gnd - pin 5/6 (connect to pin 5 of a normal DB9)

Commands (all commands are followed with a new line, all appear to be case sensitive)
b - ??? - mine just echoes back a B, occasionally sending back a BX
e - setpoint? - mine responds E00829 - which matches with the setpoint read out from serial port 2, and does not change when the photodiode is blocked
s - status? mine responds S00000 with the pd in place, or S00003 with it removed or before the laser has powered up
v - version? - mine responds V45040
w - warming up? - mine responds with W00001 after I first plug it in, and W000000 after a few minutes


Port 2 - doubler temperature tune output
115200 baud, 8 data bits, no parity, 1 stop bit
TX - pin 3/4 (connect to pin 2 of a normal DB9)
RX - pin 1/2 (connect to pin 3 of a normal DB9)
gnd - pin 4/5 (connect to pin 5 of a normal DB9)

Quote:
krazer

When I first power it up I get:

Save[5]=1525 Save[6]=1 Tcon_ld=1526

1895 0 1490 65503 1525 1
KTP temperature has been tuned 0 times!

Beginning temperature point tuning!
From 1892 to 1898, step 3.

Tcon=1859
Quote:
krazer

And after a minute or so it will start scanning the doubler (it calls it KTP, I assume that is left over from driving a 532nm laser), giving a few thousand lines of:

k=1 m=0 Tcon=1859 Trt=1886
k=2 m=0 Tcon=1865 Trt=1887
k=3 m=0 Tcon=1865 Trt=1887
k=4 m=0 Tcon=1865 Trt=1886
k=5 m=0 Tcon=1865 Trt=1887
k=6 m=0 Tcon=1865 Trt=1887
k=7 m=0 Tcon=1865 Trt=1887
[few hundred lines]
k=999 m=1 Tcon=1864 Trt=1893
k=1000 m=1 Tcon=1864 Trt=1893
k=1001 m=1 Tcon=1864 Trt=1893
k=1002 m=1 Tcon=1864 Trt=1893
k=1003 m=1 Tcon=1864 Trt=1893
got it!
k=1004 m=2 Tcon=1864 Trt=1893
got it!
k=1005 m=3 Tcon=1864 Trt=1893
got it!
k=1006 m=4 Tcon=1864 Trt=1892
got it!
k=1007 m=5 Tcon=1864 Trt=1893
got it!
k=1008 m=6 Tcon=1864 Trt=1892
got it!
[few hundred lines]
k=1499 m=497 Tcon=1864 Trt=1893
got it!
k=1500 m=498 Tcon=1864 Trt=1892
got it!
k=1501 m=499 Tcon=1864 Trt=1893
got it!

Pd=830

Pd is higher than 800!

Id=217

Id is below 330!

Id is below 300!

judge2=0 down2=1 all_down2=1

judge1=0 down1=1 all_down1=1

judge=0 down=1 all_down=1

[then it starts to repeat itself]

Tcon=1866
k=1 m=0 Tcon=1866 Trt=1895
got it!
k=2 m=1 Tcon=1866 Trt=1895
Quote:
krazer

And with the photo diode removed off the front, I get:

Tcon=1859
k=1 m=0 Tcon=1859 Trt=1885
k=2 m=0 Tcon=1866 Trt=1885
k=3 m=0 Tcon=1866 Trt=1885
k=4 m=0 Tcon=1866 Trt=1885
k=5 m=0 Tcon=1866 Trt=1884
k=6 m=0 Tcon=1866 Trt=1885
k=7 m=0 Tcon=1866 Trt=1885
k=8 m=0 Tcon=1866 Trt=1885
k=9 m=0 Tcon=1866 Trt=1885
k=10 m=0 Tcon=1866 Trt=1885
k=11 m=0 Tcon=1866 Trt=1884
k=12 m=0 Tcon=1866 Trt=1885
k=13 m=0 Tcon=1866 Trt=1885
k=14 m=0 Tcon=1866 Trt=1885
k=15 m=0 Tcon=1866 Trt=1885
k=16 m=0 Tcon=1866 Trt=1885
k=17 m=0 Tcon=1866 Trt=1885
k=18 m=0 Tcon=1866 Trt=1884
k=19 m=0 Tcon=1866 Trt=1885
k=501 m=0 Tcon=1866 Trt=1893
[few hundred lines]
k=502 m=0 Tcon=1866 Trt=1893
got it!
k=503 m=1 Tcon=1866 Trt=1893
got it!
k=504 m=2 Tcon=1866 Trt=1892
got it!
k=505 m=3 Tcon=1866 Trt=1893
got it!
k=506 m=4 Tcon=1866 Trt=1893
got it!
k=507 m=5 Tcon=1866 Trt=1893
got it!
[few hundred lines]
k=1000 m=498 Tcon=1866 Trt=1893
got it!
k=1001 m=499 Tcon=1866 Trt=1892
got it!

Pd=37
No Pd detected! Pd=37

Id=329

Power's too low!

judge2=0 down2=1 all_down2=1

judge1=1 down1=0 all_down1=0

judge=1 down=0 all_down=0

Tcon=1869

One last comment to anyone looking to build a nicer box for the laser, the supply needs to be heatsunk with a fairly decent heatsink, and it does not appear to have any form of overheat protection integrated into it. The laser head seems to be fine without any additional heatsink, but the power supply definitely will overheat without some help.

I am not sure what the numbers at the beginning mean, but Pd=xxx appears to be what the photodiode is reading, and Id appears to be the diode current. Its possible that Id reads in 10ma increments (ie Id=217 = 2.17A), but I have not been able to confirm.

The piece of metal it is mounted on seems to work fine, but in testing with that plate removed the supply quickly warmed up to dangerous levels.

I haven't managed to get the laser to respond to anything on serial port 2, randomly mashing the keyboard seemed to have no response.
Quote:
krazer

A few comments I forgot to add in the previous post-

1. serial port 1 - 9600 baud 8 bits no parity 1 stop bit

2. serial port 2 - 115200 baud 8 bits no parity 1 stop bit

3. the laser definitely has a light control loop, interrupting the beam before the photo diode sensor causes the current to very quickly ramp up to a maximum level. I lent my scope out so I can't see how quickly, but there might be hope to modulate this thing at a reasonable rate. You can see how much the current increases by looking at the printout in my previous post, with the pickoff in place it was running at 217 arbitrary units (I am guessing that means 2.17A?) and with it removed the current jumped up to 329 units (3.29A?). Has anyone been able to read the resistance of R53 (mounted on the heatsink between Q4 and Q6)? I am assuming it is the current sense for the diode, I measured 1.24v for 217 units of diode current as read out by the doubler tuning algorithm.

4. The warranty sticker on the back doesn't actually do anything, by removing the 6 screws on the bottom you can lift the whole inside of the laser out (although you can't do a whole lot due to the short length of the wires). I just thought I should mention it, just because the sticker is still there the head could be completely stripped for all you know.

5. Looking at the board, it appears that pots 5 and 4 appear to have been disabled (note how r54 and r55 labeled 0ohms have been removed), so I am assuming at least the settings those pots originally set are being set by the daughterboard on top.
Quote:
Kyle

Thanks again krazer, once again a very informative post! You have done much more fiddling with these lasers than I have and I appreciate the extra information you've provided.

drlava said that his unit had a maximum diode current setting at around 1.95A, so your unit running at a max of 3.29A seems a bit high.

I have a version 4.0 driver board and it appears that R53 is absent. It is marked on a trace and there are two solder pads below this trace but there is no component present. For the record, I'm nearly electronically retarded so I may be overlooking something.

I was thinking about removing the base from the lid via the bottom screws but have not done so yet; it's nice to know that is somewhat possible.

I'm also relieved to here that pots 4 and 5 are nonfunctional, as the version 4.0 boards don't have them. That's one less thing to worry about as I try to squeeze a bit more power out of my unit.

- Kyle

Photo of the controller board and above quotes cut and paste from https://tinyurl.com/BWTech473

Maybe this isn't worth bringing over here since all of the above quoted info is at that link and much more, pages of posts. However, this is what I consider important core info to communicate with and get the DPSS laser driver working. Paul & Brad have already been into the data port for the spectrometer and reporting their findings, hoping they will post more about their work with them.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

http://lasers.org.ru/forum/threads/b...mw.1962/page-2



- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Spectrometer tinkering by Brad and Paul:

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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by Alaskan View Post
Photo's and above quotes cut and paste from https://tinyurl.com/BWTech473 - If not Kosher I will edit them out. Maybe this isn't worth bringing over here since all of the above quoted info is at that link and much more, pages of posts. However, this is what I consider important core info to communicate with and get the DPSS laser driver working. Paul & Brad have already been into the data port for the spectrometer and reporting their findings, hoping they will post more about their work with them.
Driver for the laser can get fairly hot under normal operation, attaching the existing heatsink to another heatsink or adding a fan or something may be a good idea if you plan to run it for longer durations.

Think the power connector is DB9 MALE, which means I messed up ordering DB9M connectors... Better order up some DB9F... (Edit: Just ordered a female-female DB9 converter, so can use that to connect the two male connectors if needed.)

Looks like this may have been the original product, anyone confirm?



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Old 09-01-2017, 06:07 PM #7
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Subbing for now. Will post here as I get news.
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Old 09-01-2017, 06:21 PM #8
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

The Biophotonic Scanner is the world's first measurement device to determine Carotenoid Value in the Skin (SCS) - an instant recording of carotenoid antioxidant activity in your body. By simply placing your hand in front of a faint blue light, you can get your Carotenoid Value in your skin within minutes. The Pharmanex® Biophotonic Scanner Technology is based on an optical method known as Raman Resonance Spectroscopy. This technology has been awarded the Nobel Prize and is used for biological measurements, as well as scientific discipline supported by years of research. Thanks to Pharmanex, technology is now available to everyone. The scanner uses optical signals to measure carotenoid levels in human tissue just below the skin's surface. These signals identify the specific molecular structure of carotenoids. Pharmanex® is the exclusive holder of the patented Biophotonic Scanner technology. The scanner was developed by physicians and physicists at the top university in the United States

Here is a picture of what these units looked like with the original casing.
This was found by searching BPS473 which is the model number on one of the stickers on the unit.



On a side note, the "beam splitter" in the front unit that both fibers lead into, is very selective about wavelength. 405, 520, 635, and 660 all get split ~50/50 going through it at any angle while at a 40-45 degree angle 477 and 473 is almost fully reflected.


Copying from my 477 streamlight thread:

Quote:
Originally Posted by paul1598419 View Post
Were you able to scan the device into the software? If not, the 390nm to 650nm range probably has nothing to do with these spectrometers. If this is a version of BWSpec that is encouraging as that is the software I found on their website that would work with this spectrometer. I wonder why all the errors codes, though. I may have to wait until I get the other five coming to me as the one I got is incomplete and may have some missing plugs. Did you get a schematic to this laser? That would be very helpful to me at this point.
I have to wait on my serial convertor having lost mine and at this point I will have to wait to see what I can do when I receive my new cable.. Mine had "missing" cables aswell running to the spectro. I had only one of the three 10 pins headers with anything connected. Im assuming that those other two are for a different usage or even JTAG ports as they are labeled JT1 and JT2. The control board for the 473nm units was also "missing" a few cables yet operates the laser just fine as is without the spectro or the small power supply for the spectro hooked up to the harness.

And it seems the error codes at this point are literally "missing background image" and if I try to take a reading with no spectro hooked up "no spectro connected, the port is closed" so I still think there is a good chance these are good to go as is unless they have a restrictive firmware flashed onto them.
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Old 09-01-2017, 06:33 PM #9
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

I knew what these were used for some time ago. I'm surprised they were able to sell so many as a skin scanning method of getting carotinoid levels. I'm not too concerned about the other two unplugged JT1 and JT2 plugs on the spectro. They were likely always that way. How are you powering the spectro now? There is a mini plug on it that may be a separate power input source.
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Old 09-01-2017, 10:37 PM #10
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Those errors almost certainly mean the software is coded in .net, which means the source code is easy to get (and modify, if needed).
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Old 09-02-2017, 08:50 AM #11
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

That would be great if we could get into it. FYI, I've added more photo's and links to post #5 in this thread. Also, added a link to a current ebay sale for five "working" units. I made a deal with Paul on the ones I'm sending him, so they all belong to him now.

edit

Adding photo's of spectrometer box to first page in thread















Click photo for larger view.
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Old 09-02-2017, 01:27 PM #12
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Should I contact him to get one of the spectro's, then?
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Old 09-02-2017, 01:31 PM #13
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

That would be the cheapest way to go, if he wanted to let one go. If he doesn't I will have some arriving here where I'm at in a week, if the package doesn't get stuck in customs.
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Old 09-02-2017, 07:29 PM #14
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Thank you, Chris. I have ordered two RS232 to USB converters. One from China that will take forever getting here and one from CA that has shipped and should get here next week. I hope to connect the spectro to the software and see about its range and need for calibration. I can't do much more until I get one of those converters. I see a mini plug on the spectro board and wonder if it is an alternative way to power it. It may also get power through the RS232 connector as my USB2000 gets its power through the USB coneector.
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Old 09-02-2017, 09:42 PM #15
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

B&W TEK BRC100 Spectrometer 399-785nm w/ Power Supply Fiber Optic BRC100-OEM | eBay

Looks to be an alternative power input. That looks to be the same spectro just with a wall wart.
I have a USB to serial converter waiting in my mailbox so I will be able to hook it up tonight to see if I can get a reading and if it correctly reads my few known wavelength sources as well as try to establish a range on it as best I can. Will post back after work with my results.
Hoping for the best and hopefully I can post back in 6 hours with some good news.

Does anyone happen to have the spectrum for the stray emissions from a healthy he-ne laser anywhere? I've got that, two 473's and a Laserglow 532 to quickly check with at my disposal.
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Old 09-02-2017, 09:52 PM #16
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

So, I was right. The mini plug is another way to power this spectro. Looks like they are using a 12 VDC 750 mA wall wart. Wonder why it is considered a B grade spectro?

BTW, Brad. You have a double post.
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Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
477nm 127 mW 501B
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
635nm Lifetime17 Mini-camo build 687mW
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM

Last edited by paul1598419; 09-02-2017 at 09:53 PM.
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