We treat jet lag during sleep. LumosTech is building a next-generation sleep mask that can shift sleep cycles up to three times the natural rate during sleep without waking the user. Our technology uses millisecond pulses of light to shift sleep cycles (and treat other circadian rhythm disruptions) and was discovered, developed, and clinically validated by Stanford researchers. We have an alpha version of our sleep mask and are working on a companion smartphone app to model individual circadian phase in real time (providing personal sleep quality information and the ability to advance or delay sleep cycle). No other device exists that provides personal circadian rhythm information while simultaneously adjusting sleep cycle. Using our sleep mask, business travelers and athletes can quickly realign their circadian clocks to a new time zone. We can also use our technology to treat seasonal affective disorder and adjust the late-shifted sleep cycles of adolescents to normal waking hours.