Spectrography using the epc901 High Speed Line Image Sensor

RE: Spectrography using the epc901 High Speed Line Image Sensor

JWageM — Sat, 17 Aug 2024 06:17:29 GMT

Nice project! Where/how can I order the circuit boards (the adapter board and the breakoutboard)?

RE: Spectrography using the epc901 High Speed Line Image Sensor

MinhNguyen_xOrbita — Thu, 23 May 2024 01:23:20 GMT

Hey Frank, super interesting project. I know it's been a while since you posted but I was actually thinking of building one of these. I think an interesting application is using it to identify the physical properties of objects. Maybe coding the sensor to recognize certain wavelengths being a specific material.

RE: Spectrography using the epc901 High Speed Line Image Sensor

Richard_D — Fri, 22 Jul 2022 03:15:13 GMT

Hi fmilburn,thank your team desgin and share EPC901 spectrometer ,this great project for me.I am repeating this project. I want to know whether the frame rate of epc901 can really reach 47khz (FPS) mentioned in the data manual, which is very important to me. Thank you

RE: Spectrography using the epc901 High Speed Line Image Sensor

jc2048 — Fri, 13 Nov 2020 11:24:04 GMT

Very good project you've both done there. Being able to see the movement of the LED's dominant wavelength against current like that shows nicely the precision you've achieved.

If you have time for more experiments, I'd quite like to see the spectrum of a white LED.

As I'm sure you know, white LEDs are really blue LEDs with a phosphor coating to move some of the energy down to the red/green area, so the spectrum will be a line at the blue wavelength, where the blue LED light 'punches through' the phosphor, along with something more continuous for the rest.

Here's an example from Nichia's website. It's interesting because it's a bit of a fake white. It will look white, because if you multiply it with the responses of each of the eye's colour receptors and integrate, the relative amounts of red, green, and blue will be right for whatever colour-temperature white this LED is designed to give, but it's quite a bit different to the continuous-spectrum white that you would get from a black body radiating at that temperature.

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RE: Spectrography using the epc901 High Speed Line Image Sensor

dubbie — Thu, 12 Nov 2020 11:33:04 GMT

A very impressive project that is well engineered. Probably something I would aspire to but probably not reach at this point in my life.

The line sensor does look interesting. I've worked with simpler CCD line sensors in the past trying to make a triangulation distance sensor for bright spots but gave up when the sensors were no longer produced (by TI I think). Maybe I'll have to see about having another look at modern line sensor cameras.

Dubbie

RE: Spectrography using the epc901 High Speed Line Image Sensor

DAB — Wed, 11 Nov 2020 19:37:50 GMT

Great project.

Well done.

DAB

RE: Spectrography using the epc901 High Speed Line Image Sensor

genebren — Wed, 11 Nov 2020 16:19:13 GMT

Great project/experiment Frank! Everything was presented clearly and the overall blog was very informative. This blog really took me back in time to some of the work I had done with the development of spectrometers that were used in UV/Vis detectors for liquid chromatography systems. Well done!

RE: Spectrography using the epc901 High Speed Line Image Sensor

shabaz — Wed, 11 Nov 2020 13:59:03 GMT

Hi Frank,

Wow, awesome project : ) Looking forward to reading this more thoroughly a few times! Lots of detail which is great.

It's nice you guys managed to find a modern sensor. I had hopes of trying to build a spectrometer at some point too, but only managed to acquire an old fax machine CCD, which is not great for having a reproduceable design if the part is hard to find!

Also it is great to see that 3D printing is compatible with such a project! That's something I would have mistakenly assumed could not work. Really impressive project.

RE: Spectrography using the epc901 High Speed Line Image Sensor

ralphjy — Wed, 11 Nov 2020 13:41:34 GMT

Very nice design and execution. You’ve build a very useful instrument.

RE: Spectrography using the epc901 High Speed Line Image Sensor

jw0752 — Wed, 11 Nov 2020 06:57:01 GMT

Hi Frank,

What a beautiful well executed build. You and Adrian make a good scientific instrument team. Thank you for posting this really neat project.

John