Question:UV measurements

Hi! I think most webcams can't see much lower than 400nm, but if your sample flouresces in the visible range, you can read that...

There's been some tests to see if certain image sensors (rear-illuminated CMOS) can sense lower than that, but glass blocks most of it, so there might have to be non-glass (pinhole?) optics... and there is sometimes glass over the sensor. So it quickly becomes pretty complex!

https://publiclab.org/tag/uv?page=2

Jeff

On Tue, Nov 6, 2018 at 11:32 AM \<notifications@publiclab.org> wrote:

UV measurements was tagged with #question:spectrometry by warren

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Hmm, perhaps a better detector would be a SiC photodiode.

I'm currently looking at the VEML6075 to detect UVA and UVB. It seems to be what I might call "semi-calibrated" that is you can use default settings to get a rough idea of the intensity.

Thanks, that's an interesting device. But it is only sensitive to two very narrow frequency bands.

Are there any materials which fluoresce only under a fairly narrow band around 365nm?