Abstract: The invention relates Tunable prism (1) for optical image stabilization, comprising the components: A container (2) that comprises a membrane (6) comprising at least a transparent portion, the container (2) further comprising a transparent rigid bottom portion (5) facing the membrane (6), wherein the membrane (6) is connected to the bottom portion (5), and wherein the container (2) encloses a volume (7) that is filled with a transparent fluid (3); A transparent window (8) arranged on the membrane (6), wherein the membrane (6) comprises a deformable portion (6a) extending around an outer edge (8a) of the window (8), such that the window (8) can be tilted around a first and/or a second axis (201, 202) with respect to the bottom portion (5). The invention further relates to an imaging system (50) comprising the tunable prism (1).

Abstract: The objects of the present invention are a barn and a procedure for curing Virginia type tobacco. The barn consists of an air heating device with an impulsion fan (9) connected by means of an inlet duct (10) to several curing units (1-8) where the Virginia type tobacco leaves are contained said curing units (1-8) being mutually connected. The heated air introduced into the barn by the fan (9) flows continuously and sequentially through the curing units (1-8), said air thereby acquiring the adequate moisture and temperature for each step of the Virginia type tobacco curing process.The barn and procedure of the invention provide improved fuel efficiency and ease of management.