Optical article comprising an optical lens shell having an internal surface and an external surface , wherein: - the optical article further comprises a support element mounting the optical lens shell , disposed in a fixed position, and movably mounting a moveable element between a first position and a second position, wherein in the first position the moveable element is against the optical lens shell , wherein in the second position the moveable element is released from the optical lens shell , - the optical article further comprises a first sealed cavity , placed between the moveable element and the internal surface of the optical lens shell , coupled to a fluid inlet adapted for adjusting an amount of fluid in the first sealed cavity , - the optical article is switchable between a first configuration (CFG1) and a second configuration (CFG2), - in the first configuration (CFG1), the moveable element is passively held in the first position, and - in the second configuration (CFG2), the first sealed cavity is filled with a predetermined amount of a first fluid altering the propagation of visible light and the moveable element is held in the second position by the pressure exerted by the first fluid in the first sealed cavity , - the moveable element is a rigid element having an external surface and an internal surface, characterized in that: - the optical equipment comprises, attached on the internal surface of the rigid element, a deformable membrane which is held against the internal surface of the optical lens shell in the first and second configurations (CFG1, CFG2), and - the first sealed cavity being defined by the deformable membrane and the internal surface of the rigid element. - the optical article further comprises a support element mounting the optical lens shell , disposed in a fixed position, and movably mounting a moveable element between a first position and a second position, wherein in the first position the moveable element is against the optical lens shell , wherein in the second position the moveable element is released from the optical lens shell , - the optical article further comprises a first sealed cavity , placed between the moveable element and the internal surface of the optical lens shell , coupled to a fluid inlet adapted for adjusting an amount of fluid in the first sealed cavity , - the optical article is switchable between a first configuration (CFG1) and a second configuration (CFG2), - in the first configuration (CFG1), the moveable element is passively held in the first position, and - in the second configuration (CFG2), the first sealed cavity is filled with a predetermined amount of a first fluid altering the propagation of visible light and the moveable element is held in the second position by the pressure exerted by the first fluid in the first sealed cavity , - the moveable element is a rigid element having an external surface and an internal surface, - the optical equipment comprises, attached on the internal surface of the rigid element, a deformable membrane which is held against the internal surface of the optical lens shell in the first and second configurations (CFG1, CFG2), and - the first sealed cavity being defined by the deformable membrane and the internal surface of the rigid element. <EOS>