Patent ID: 8481304

Claim:
A photo bioreactor ( 1 ), comprising: (a) an aqueous liquid ( 20 ) that comprises a photosynthetic culture ( 21 ) and (b) at least one light distributor ( 30 ) that comprises (i) at least one light receiving surface ( 31 ) arranged to receive light ( 40 ) and (ii) at least one emitting surface ( 532 ) arranged to emit at least part of the received light ( 40 ), wherein at least part of the emitting surface ( 532 ) is submerged in the aqueous liquid ( 20 ), and wherein said light distributor ( 30 ) comprises at least one fluid-filled sealed cavity that comprises walls of elastomeric material, and wherein said fluid ( 135 ) and elastomeric material in use transmit light from said light receiving surface ( 31 ) to said light emitting surface ( 532 ).