Seen on Shark Tank: Does This Light Therapy Lamp Actually Work? Circadian Optics didn't just slap "as seen on TV" on a listing — the founder actually pitched on Shark Tank, walking away with $800,000 from Mark Cuban and Lori Greiner for the Lumos light therapy lamp. That's the kind of scrutiny a product doesn't fake its way through. Circadian Optics Lumos 10,000 Lux Light Therapy Lamp $69.99 | 6,262 ratings | 4.6 out of 5 stars | 500+ bought in the past month Reviewers commonly report better sleep quality and improved mood during darker months, with several specifically mentioning Seasonal Affective Disorder. Buyers also point to the compact, foldable design and 270-degree adjustable panel as standouts against bulkier light boxes. One thing worth knowing before you buy: a few reviewers report the lamp can feel top-heavy and prone to tipping when the arm is fully extended — worth keeping the arm closer to upright for stability, especially on a nightstan...