Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

B&W-tech Spectrometer & 473 module: Setup+Mods+Info

C

chloderic

0
Joined
Jan 21, 2018
Messages
324
Points
43
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

the USB2000 is a very useful device, i whish to have one, but basicly it is technical inside the same device type with the image sensor 2048-pixel linear CCD manufactured by Sony, part number ILX511. The ILX511 is a rectangular reduction-type CCD designed for bar code hand scanners and optical measuring equipment use. The pixel size is 14 µm 200 µm. The chip has a built-in timing generator and clock drivers and packaged in a 22 -pin DIP.
 





paul1598419

paul1598419

0
Joined
Sep 20, 2013
Messages
17,433
Points
113
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

It did. Got it replaced a few tears ago. Went through Ocean Optics to get it done.
 
C

chloderic

0
Joined
Jan 21, 2018
Messages
324
Points
43
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

i think we can bring this B&W-TEK device to an useful part .... all together ...
 
N

new301

0
Joined
Oct 6, 2011
Messages
6
Points
3
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

chloderic said:
do you have the SDK "Software Development Kit" ?
Click to expand...

I've seen it, but it's not much use as the documentation states: "For RS232 Devices, contact B&W Tek, Inc. with your model spectrometer and serial number and reference RS232 Command Set, (Doc #4000000008)."

So it appears to be only for the USB version only.
 
paul1598419

paul1598419

0
Joined
Sep 20, 2013
Messages
17,433
Points
113
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

chloderic said:
what is the actual ccd in yours ? maybe we all could upgrade our device ... ?
Click to expand...

It's a S11639 CMOS made by Hamamatsu. Since then I've been thinking of getting the 3648 pixel CCD by Toshiba, IIRC.
 
C

Civitus

0
Joined
Mar 1, 2017
Messages
81
Points
8
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

chloderic said:
do you have the SDK "Software Development Kit" ?
Click to expand...

Hello,
I juts receive my unit.
It arrived in a good shape, and ...
the laser works well and the spectrometer too.
I think that i desagree with you on this forum, the range seems to be from 480 to 650nm or so.
There seems no thing t o block the detector, as all the pixels (may be few units only) show a signal when i shine a fluorescent lamp.
I think that there is no need to open the spectrometer or to remouve any thing that may block the CCD

I used the Science-Surplus software.
more will come later.
C
 
C

Civitus

0
Joined
Mar 1, 2017
Messages
81
Points
8
C

Civitus

0
Joined
Mar 1, 2017
Messages
81
Points
8
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

chloderic said:
the USB2000 is a very useful device, i whish to have one, but basicly it is technical inside the same device type with the image sensor 2048-pixel linear CCD manufactured by Sony, part number ILX511. The ILX511 is a rectangular reduction-type CCD designed for bar code hand scanners and optical measuring equipment use. The pixel size is 14 µm 200 µm. The chip has a built-in timing generator and clock drivers and packaged in a 22 -pin DIP.
Click to expand...

Yes, I want to add that the ILX511 is a very sensitive sensor, it is used by both Ocean Optics and Avantes in their sensline and sensitive spectrometers.
it is really a nice CCD

C
 
C

Civitus

0
Joined
Mar 1, 2017
Messages
81
Points
8
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

diber said:
Further to my previous post, some examples obtained with this spectrometer (initial testing) using the Spectrum Studio software:
- spark emission spectrum of copper wire, one with and one without cutoff filter. The effect of the filter is clearly visible for wavelengths below 485nm (intensity of spark is different for both spectra)
- raman spectrum for acetone
- raman spectrum for isopropanol
The baseline for both raman-spectra is not perfect yet (note that I subtracted a baseline spectra, but it is clearly not perfectm (baseline spectrum to high for isoprop, while too low for acetone setup). Setup for the raman spectra is using the delivered 473nm laser (output power increased by tuning pot on supply as high as possible while still maintaining stable output), delivered fiber optic cables and delivered/unmodified beam splitter.
Click to expand...

Helo Diber,
How dod you manage to get these spectra?
In fact, I let the unit wired and the fibers in there places (fiber from the laser to the beamspliter cube and a fiber from the BS to the spectrometer).
When i turned on the unit, I was colelcting a strange spectrum even if there is no thing in fron the BS.
have you done any changes or improuved the set up?
Thank you for the help.
C
 
C

chloderic

0
Joined
Jan 21, 2018
Messages
324
Points
43

Attachments

  • Tech-Note-Comparison-of-SONY-ILX511B-and-Hamamatsu-S11639-v1.pdf
    639.6 KB · Views: 46
C

chloderic

0
Joined
Jan 21, 2018
Messages
324
Points
43
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Civitus said:
Helo Diber,
How dod you manage to get these spectra?
In fact, I let the unit wired and the fibers in there places (fiber from the laser to the beamspliter cube and a fiber from the BS to the spectrometer).
When i turned on the unit, I was colelcting a strange spectrum even if there is no thing in fron the BS.
have you done any changes or improuved the set up?
Thank you for the help.
C
Click to expand...

I tested the beamplitter with a 405 laser and found that there is used on different places a fluorescent glue, e.g. the lenses were glued in with such.
When using UV light, this is even more directly visible.
It seems that this glue fluoresces at shorter wavelengths and thus at 473 nm, because the strange wave deflections in the spectrometer described here disappeared when using 532 nm.
 
C

chloderic

0
Joined
Jan 21, 2018
Messages
324
Points
43
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

to explain what i mean i added a picture here, the open beam splitter is visible and the glowing spot is the fluorecenz in response to a 405 nm laser.
 

Attachments

  • 20180429_111153.jpg
    20180429_111153.jpg
    203.5 KB · Views: 60
jnrpop

jnrpop

0
Joined
Dec 7, 2008
Messages
723
Points
63
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Wow, interesting results chloderic :beer:
Do you believe 473nm could also cause a small amount of fluorecense? I couldn't imagine the manufacturer over looking the fact that this could cause stray readings in the original units operation.

@chloderic, take a look at this company in Germany - https://laserpointerforums.com/f70/new-age-spectrometer-102773.html#post1528408

J :beer:
 
Last edited:
C

chloderic

0
Joined
Jan 21, 2018
Messages
324
Points
43
Re: B&Wtech 473nm unit / Spectrometer Mods & Info

jnrpop said:
Wow, interesting results chloderic :beer:
Do you believe 473nm could also cause a small amount of fluorecense? I couldn't imagine the manufacturer over looking the fact that this could cause stray readings in the original units operation.

@chloderic, take a look at this company in Germany - https://laserpointerforums.com/f70/new-age-spectrometer-102773.html#post1528408

J :beer:
Click to expand...

the developers of this unit have certainly not overlooked that, but in the planned application that was actually irrelevant, because if you look at the sticker on the devices and the listing of "left pixel" "right pixel" "left range" "right range ", it is clear that only a certain small target spectral range was interesting for a result. the rest of the disruptive fluorescence was indeed (as known) hidden by this baffels inside.
 
C

chloderic

0
Joined
Jan 21, 2018
Messages
324
Points
43
Last edited:
You must log in or register to reply here.




Top