US Patent 10193008 Lighter than air vehicle

Disclosed is a lighter than air vehicle comprising: an envelope containing a lighter than air gas, at least part of the envelope admitting the passage of light through the at least part of the envelope; and a directing device for selectively redirecting the light which passes through the at least part of the envelope. The vehicle may further comprises a plurality of devices for using incident light. The directing device for selectively redirecting the light may be for selectively redirecting the light onto a selected device, for example, by switching the positions of two or more devices into the path of the light.