Abstract: An apparatus (10) for the rehabilitation, assistance and/or augmentation of arm strength in a user (U) comprises a support arrangement (12) for supporting the apparatus (10) on the user (U), a linkage arrangement (14) coupled to the support arrangement (12) and for coupling to an arm (A) of the user (U), and an actuation arrangement (16) for operating the linkage arrangement (14) and thereby manipulating the user's arm (A) in response to a user input signal.

Abstract: An optical coherence tomography instrument suitable for imaging a retina is disclosed. In the instrument, an adjustable optical frequency shifter, which can be or include an acousto-optic modulator or electro-optic modulator, is arranged either (i) between a coupler and a reference optical system, (ii) in a reference optical system, (iii) between the coupler and a front-end optical system, or (iv) in a front-end optical system. The optical frequency of reference light or signal light may adjustably be increased or decreased. In operation, a subject is arranged such that its retina is in the focal depth of the front-end optical system. The increase or decrease in the optical frequency of the reference light or the sample light can be adjusted. Thereby, an interferogram representing a depth structure at the retina obtained between returning signal light and returning reference light may be brought to lie within a detection bandwidth of the instrument.

Abstract: A binocular OCT imaging system for simultaneously imaging regions of a first eye and second eye using an interferometer having a reference arm first sample arm and second sample arm, by: obtaining an electrical signal (S) having first frequency components spanning a first band and caused by interference between reference light in the reference arm with light reflected from the first eye in the first sample arm, and second frequency components spanning a second band and caused by interference between the reference light and light reflected from the second eye in the second sample arm; and generating OCT images of: the region of the first eye using first frequency components in a portion of the first band not overlapping the second band; and the region of the second eye using second frequency components in a portion of the second band not overlapping the first band.

Abstract: A swept-source OCT imaging system for imaging a region of an object, comprising: a swept light source which generates a beam of varying wavelength; a scanning element which scans the beam across the object; an interferometer which generates interference light by combining light scattered by the object (owing to the scan) with reference light; a photodetector which generates an electrical signal (S) having frequency components spanning a frequency band and caused by interference of the scattered light with the reference light; a band-pass filter module which band-pass filters the electrical signal; and a sample acquisition module which samples the filtered electrical signal. The band-pass filter module extracts at least some of the frequency components spanning the frequency band from the electrical signal. The sample acquisition module band-pass samples the filtered electrical signal.