Abstract: A control system comprising at least one camera arranged to acquire one or more images of at least a portion of a head of a subject and a processor arranged to process the one or more images to generate a value of a first indicator which is indicative of a height at which the at least a portion of the head, to use at least one mapping to map the value of the first indicator to a value of a second indicator which is indicative of a target height and to generate a control signal for adjusting a height at which a height-adjustable contact surface of the ophthalmic imaging device is disposed to the target height at which the contact surface is to contact the head of the subject during imaging of the eye of the subject by the ophthalmic imaging device.

Abstract: The invention provides an apparatus for separating components of a fluid stream comprising a first centrifugal separator and a further separator; the first centrifugal separator comprising: a support structure and a centrifugal separator unit rotatably mounted on the support structure so as to be rotatable about a rotational axis extending through the centrifugal separator unit; a drive element for driving rotation of the centrifugal separator unit; wherein the centrifugal separator unit comprises a centrifugal separation chamber having an inlet which is connected or connectable to a source of fluid requiring separation, a first outlet for collecting a higher density component of the fluid stream, and a second outlet for collecting a lower density component of the fluid stream; the first outlet being connected or connectable to a first collector for collecting the higher density component and the second outlet being connected or connectable to a second collector for collecting the lower density component.

Abstract: A centrifugal separator apparatus for separating components of a fluid stream; the apparatus comprising a support structure and a centrifugal separator unit rotatably mounted on the support structure so as to be rotatable about a rotational axis extending through the centrifugal separator unit; a drive element for driving rotation of the centrifugal separator unit; wherein the centrifugal separator unit comprises a centrifugal separation chamber having an inlet which is connected or connectable to a source of fluid requiring separation, a first outlet for collecting a higher density component of the fluid stream, and a second outlet for collecting a lower density component of the fluid stream; the first outlet being connected or connectable to a first collector for collecting the higher density component and the second outlet being connected or connectable to a second collector for collecting the lower density component; the centrifugal separation chamber comprising a curved or inclined guide surface for g

Abstract: The invention provides an apparatus for providing potable water, which apparatus comprises a plurality of components linked in series to provide a flow path through the apparatus, wherein the plurality of components comprises: (i) an inlet (4) for a stream of contaminated water requiring purification; (ii) a centrifugal separator (20) for separating the contaminated water stream into a partially purified water stream and a contaminant stream; (iii) a pre-filter pump (26); (iv) a pre-filter pressure sensor (30); (v) a first filter assembly (32) comprising one or more filter modules for removing particles of a predetermined size and/or removing organic contaminants from the partially purified water stream; (vi) a post-filter pressure sensor (38); (vii) a post-filter pump (40); (viii) a second filter assembly comprising one or more reverse osmosis filters (48); (ix) a UV steriliser unit (52); and (x) an outlet (6) for purified potable water; and wherein the apparatus further comprises an electronic controller (

Abstract: The invention provides an apparatus for providing potable water, which apparatus comprises a plurality of components linked in series to provide a flow path through the apparatus, wherein the plurality of components comprises: (i) an inlet (4) for a stream of contaminated water requiring purification; (ii) a centrifugal separator (20) for separating the contaminated water stream into a partially purified water stream and a contaminant stream; (iii) a pre-filter pump (26); (iv) a pre-filter pressure sensor (30); (v) a first filter assembly (32) comprising one or more filter modules for removing particles of a predetermined size and/or removing organic contaminants from the partially purified water stream; (vi) a post-filter pressure sensor (38); (vii) a post-filter pump (40); (viii) a second filter assembly comprising one or more reverse osmosis filters (48); (ix) a UV steriliser unit (52); and (x) an outlet (6) for purified potable water; and wherein the apparatus further comprises an electronic controller (

Abstract: The invention provides an apparatus for separating components of a fluid stream comprising a first centrifugal separator and a further separator; the first centrifugal separator comprising: a support structure and a centrifugal separator unit rotatably mounted on the support structure so as to be rotatable about a rotational axis extending through the centrifugal separator unit; a drive element for driving rotation of the centrifugal separator unit; wherein the centrifugal separator unit comprises a centrifugal separation chamber having an inlet which is connected or connectable to a source of fluid requiring separation, a first outlet for collecting a higher density component of the fluid stream, and a second outlet for collecting a lower density component of the fluid stream; the first outlet being connected or connectable to a first collector for collecting the higher density component and the second outlet being connected or connectable to a second collector for collecting the lower density component.

Abstract: A centrifugal separator apparatus for separating components of a fluid stream; the apparatus comprising a support structure and a centrifugal separator unit rotatably mounted on the support structure so as to be rotatable about a rotational axis extending through the centrifugal separator unit; a drive element for driving rotation of the centrifugal separator unit; wherein the centrifugal separator unit comprises a centrifugal separation chamber having an inlet which is connected or connectable to a source of fluid requiring separation, a first outlet for collecting a higher density component of the fluid stream, and a second outlet for collecting a lower density component of the fluid stream; the first outlet being connected or connectable to a first collector for collecting the higher density component and the second outlet being connected or connectable to a second collector for collecting the lower density component; the centrifugal separation chamber comprising a curved or inclined guide surface for g