Abstract: Provided is a highly practical pressure vessel in which there is minimal inside diameter deformation even if openings in a center inlet/outlet part are large, and there is little pressure-induced elongation from a center to both ends.

Abstract: Provided is a highly practical pressure vessel in which there is minimal inside diameter deformation even if openings in a center inlet/outlet part are large, and there is little pressure-induced elongation from a center to both ends.

Abstract: A method for manufacturing a stereoscopic displaying apparatus is provided.

Abstract: A stereoscopic displaying apparatus includes: an image generating section having a right eye image generating region on which a right eye image light is generated and a left eye image generating region on which a left eye image light is generated; a polarizing plate that emits the right eye image light and the left eye image light generated by the image generating section in the same polarizing direction; and a polarization axis control plate on which the right eye image light and the left eye image light from the polarizing plate are incident, and from which the right eye image light and the left eye image light are emitted as linear polarized lights of which polarization axes are orthogonalized to each other or circularly polarized lights of which polarization axes are rotated in the directions opposite to each other.

Abstract: A corner pole device for vehicles comprises a drive mechanism by which a pole assembly vertically telescopically movable with respect to a housing thereof disposed at a corner part of a vehicle body is driven to expand and contract between an expanded position and a housed position. The corner pole device further comprises a control means for automatically controlling the drive mechanism to thereby drive the pole assembly into a telescopic action, depending on a detection signal from a mechanism which detects the travelling condition of vehicle.