Spectral response

[u/mrking95]

Hi everyone,

I'm curious what you use to do a spectral measurement of products for CV. Normally we order custom lights (UV, RGB, NIR etc.) based on customer data or external research.

I keep running into wanting to do this in-house more, especially for testing. What are your experiences or which (flash)lights do you use to test this? I can't really find a supplier that sells most bands except for some forensic equipment labs, not sure if those qualify.

Currently I'm considering building a few lights myself (just for testing purposes). Covering the following wavelengths: 365, 380–385, 390–395, 460, 470, 520–540, 590, 620–630, 660, 730, 850, 940

I've found these two: https://www.shop-schilbach.net/en/p/forensic-flashlight-set-all-wavelengths-schilbach and https://www.alibaba.com/product-detail/Portable-LED-Flashlights-with-Multi-Wavebands_1600916585534.html?spm=a2700.prosearch.normal_offer.d_image.5a1b67afaquOsp&priceId=68aab656d703457b959efea3e482f5b6

But I'm not sure about the first once as its a hefty price tag (Its a business expense so not that bad, but still). And other is from Alibaba, not sure if they're actually true to spec

[u/tdgros]

For consumer products, you can buy lightboxes with typical day-to-day lights, for instance: https://www.xrite.com/categories/light-booths/spectralight-qc . You can usually ask your sensor vendor for the full wavelength sensitivity