HappyLights: The SAD Truth

#sad #verilux Verilux is the market leader for SAD therapy lights. As a lighting researcher, I question some of their marketing claims, especially the claim that their lights provide "10,000 lux" of illumination.

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LINKS

Verilux:
WebMD Seasonal Affective Disorder: https://www.webmd.com/depression/guid...
Wikipedia Lux: https://en.wikipedia.org/wiki/Lux
Wikipedia Lumen: https://en.wikipedia.org/wiki/Lumen_(...)
WELL Building Standard: https://www.wellcertified.com/
WELL Circadian Lighting Design: https://standard.wellcertified.com/li...
WELL Equivalent Melanopic Lux (Tables L1 and L2): https://standard.wellcertified.com/ta...
UPRtek CV600 Spectrophotometer: https://www.uprtek.com/en/product/SPE...
Bedtime Bulb: https://bedtimebulb.com/

Note: Links below that are marked with "Affiliate link*" may earn me a commission, account credit, or other bonus. More info at the end of the description.

HappyLights (affiliate links*)
VT31 Lumi (LED, Brightness Control): https://amzn.to/35kkGZW
VT32 Touch (LED, Brightness and Color Control): https://amzn.to/2PffFMB
Full-Size (Fluorescent, Brightness Control): https://amzn.to/2rusXfr
Compact (Fluorescent): https://amzn.to/2EcKxXZ

Studio Lights (affiliate links*)
GVM 560AS (my studio light): https://amzn.to/2EadmEf
Light Stand: https://amzn.to/34gziZ8
Umbrella: https://amzn.to/2sqU5Mb
Light Stand Umbrella Mount: https://amzn.to/2t8edDb

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Timestamps:
00:00 Introduction
02:18 Product Overview
02:45 Company History and "Natural Spectrum"
04:27 10,000 Lux Claim; Lux vs. Lumens Explanation
08:46 Lux vs. Distance Test; Lamp Positioning
12:03 Melanopic (M/P) Ratio & Melanopic Lux
16:22 Vertical Placement
18:25 LED Measurements; Choosing a Better LED
20:00 Flicker Test
22:49 Final Thoughts

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Website: https://gregyeutter.com
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*Affiliate link: I may make a small commission from purchases made after clicking this link. As an Amazon Associate I earn from qualifying purchases.