Abstract: An apparatus comprising means for: causing illumination of different areas of a sample with an optical frequency imaging beam at different positions at different times, wherein adjacent positions are configured to cause the corresponding areas to at least partially overlap; receiving signals indicative of back-scattering of the optical frequency imaging beam from the sample at the different times; and processing the received signals to obtain an image of the sample, wherein processing the received signals compensates for phase variations between the different positions at the different times using a matched filter derived from a scattering model of the sample.

Abstract: Examples of the disclosure relate to an apparatus (101), a wearable electronic device and an optical arrangement for optical coherence tomography. The apparatus comprises an optical coherence tomography system (103) and an optical arrangement (105). The optical arrangement comprises at least one means for beam shaping (109) configured to shape a beam of light from the optical coherence tomography system. The optical arrangement also comprises at least one minor (111) positioned so that light from the means for beam shaping is incident on the at least one minor. The at least one mirror is configured to move in at least one direction relative to the optical coherence tomography system.

Abstract: Disclosed herein are systems, methods and/or computer programs for backscatter localization of a tag using access point (AP) mode switching. The apparatus, may comprise means for: receiving distance information associated with at least two APs from a set of at least three APs. The distance information associated with each AP of the at least two APs may be determined based on: dynamically switching the role of said each AP in a different time interval to a transmission mode for transmitting a localization signal to a tag, with the other APs in the set of APs switched to a receiving mode for receiving a backscatter signal from the tag in response to the transmitted localization signal from said each AP. Distance information determined, by the other APs, may be associated with said each AP based on the received backscatter signals corresponding to the transmitted localization signal from said each AP.

Abstract: Examples of the disclosure relate to an apparatus (101), a wearable electronic device and an optical arrangement for optical coherence tomography. The apparatus comprises an optical coherence tomography system (103) and an optical arrangement (105). The optical arrangement comprises at least one means for beam shaping (109) configured to shape a beam of light from the optical coherence tomography system. The optical arrangement also comprises at least one mirror (111) positioned so that light from the means for beam shaping is incident on the at least one mirror. The at least one mirror is configured to move in at least one direction relative to the optical coherence tomography system.

Abstract: A functionalised particle, wherein the particle has a first optical spectral signature in a first structural configuration of the particle and a second optical spectral signature in a second structural configuration of the particle.

Abstract: Examples of the disclosure relate to apparatus for providing control signals to an adjustable mirror in optical systems such as laser scanning systems. The optical systems could be LiDAR systems or optical coherence tomography (OCT) systems or any other suitable systems. The apparatus comprises means for providing a control signal to at least one adjustable mirror to control movement of the at least one adjustable mirror where the at least one adjustable mirror is provided within a laser scanning system. The control signal comprises a multi-step signal where step widths of the multi-step signal are based on half of a period of oscillation of the at least one adjustable mirror.

Abstract: An apparatus for positioning at least one adjustable mirror in optical systems such as laser scanning systems. The optical systems could be LiDAR systems or OCT systems or any other suitable systems. The apparatus comprises at least one adjustable mirror configured to enable laser light from a laser light source to be incident on the at least one adjustable mirror and to enable at least some of the laser light reflected by the at least one adjustable mirror to be used for scanning of a sample. The apparatus also comprises at least one image sensor and one or more optical components configured to guide, at least some, laser light reflected by the at least one adjustable mirror towards the at least one image sensor. This enables images obtained by the at least one image sensor to provide an indication of a position of the at least one adjustable mirror. This can enable an existing component of the optical system to be used to determine the position of the adjustable mirror.

Abstract: An apparatus comprising means for: causing illumination of different areas of a sample with an optical frequency imaging beam at different positions at different times, wherein adjacent positions are configured to cause the corresponding areas to at least partially overlap;receiving signals indicative of back-scattering of the optical frequency imaging beam from the sample at the different times; and processing the received signals to obtain an image of the sample, wherein processing the received signals compensates for phase variations between the different positions at the different times using a matched filter derived from a scattering model of the sample.

Abstract: A surface collectible (10) includes a surface member (12) and a textile (316) secured to the surface member (12). The surface member (12) is detached from a venue surface (11). The surface member (12) can be event-used. In one embodiment, the surface member (12) can include flooring. The textile (316) can include at least a portion of an article of clothing. The article of clothing can also be event-used. The surface collectible (10) can also include an image (214) imprinted on the surface member (12). The image (214) can include a sporting logo. Alternatively, the image (214) can include at least one of a professional athlete, a non-professional athlete, an athletically-involved person, an entertainer, an actor, a historical figure and a public figure. The surface collectible (10) may further include an autograph (418) inscribed on the surface member (12) and/or on the textile (316).

Abstract: The optical amplifier has an inhomogeneously broadened gain material capable of generating a plurality of ensemble gains. A first optical filter and a second optical filter are provided in the photonic integrated circuit. The apparatus has a first laser cavity which includes the optical amplifier, the first optical filter optically coupled to each other and at least two mirrors. The apparatus has a second laser cavity which includes the optical amplifier, the second optical filter optically coupled to each other and at least two mirrors. The first optical filter is tunable to a respective first ensemble gain generated by the optical amplifier and the second filter is tunable to a respective second ensemble gain generated by the optical amplifier; and the second ensemble gain is different from the first ensemble gain. A laser source and an optical transmitter are also disclosed.

Abstract: Examples of the disclosure relate to an apparatus, an optical coherence tomography device, a wearable electronic device and method of forming an apparatus for optical coherence tomography. The apparatus comprises at least one layer of silicon dioxide and an integrated optoelectronic circuit. The integrated optoelectronic circuit comprises at least an interferometer configured for optical coherence tomography wherein the integrated optoelectronic circuit is formed within the at least one layer of silicon dioxide.

Abstract: A collectible casing card can include a casing member, a card member that is engaged with the casing member to define a casing member interior, and a collectible that is positioned within the casing member interior. The card member and casing member can be engaged to form a flush or non-flush engagement. The collectible casing card can include a fastener that is secured to one of the casing member and the card member. The fastener can be positioned on a side wall of the card member. The collectible can include a ring. A method for manufacturing a collectible casing card can include the steps of engaging a card member and a casing member with one another to define a casing member interior and positioning the collectible within the casing member interior. The method can include the step of imprinting an image on a top surface of the card member.

Abstract: Examples of the disclosure relate to an apparatus (101), a wearable electronic device and an optical arrangement for optical coherence tomography. The apparatus comprises an optical coherence tomography system (103) and an optical arrangement (105). The optical arrangement comprises at least one means for beam shaping (109) configured to shape a beam of light from the optical coherence tomography system. The optical arrangement also comprises at least one minor (111) positioned so that light from the means for beam shaping is incident on the at least one minor. The at least one mirror is configured to move in at least one direction relative to the optical coherence tomography system.

Abstract: A functionalised particle, wherein the particle has a first optical spectral signature in a first structural configuration of the particle and a second optical spectral signature in a second structural configuration of the particle.

Abstract: A surface collectible (10) includes a surface member (12) and a textile (316) secured to the surface member (12). The surface member (12) is detached from a venue surface (11). The surface member (12) can be event-used. In one embodiment, the surface member (12) can include flooring. The textile (316) can include at least a portion of an article of clothing. The article of clothing can also be event-used. The surface collectible (10) can also include an image (214) imprinted on the surface member (12). The image (214) can include a sporting logo. Alternatively, the image (214) can include at least one of a professional athlete, a non-professional athlete, an athletically-involved person, an entertainer, an actor, a historical figure and a public figure. The surface collectible (10) may further include an autograph (418) inscribed on the surface member (12) and/or on the textile (316).

Abstract: A coherent optical receiver having an analog electrical circuit connected to combine the outputs of multiple photodetectors to generate an electrical output signal from which the data encoded in a received modulated optical signal can be recovered in a robust and straightforward manner. In an example embodiment, the analog electrical circuit includes one or more transimpedance amplifiers connected between the photodetectors and the receiver's output port. The coherent optical receiver may include a dual-polarization optical hybrid coupled to eight photodiodes to enable polarization-insensitive detection of the received modulated optical signal. The signal processing implemented in the analog electrical circuit advantageously enables the use of relatively inexpensive local-oscillator sources that may have relaxed specifications with respect to linewidth and wavelength stability.

Abstract: An apparatus includes first and second light sources, an optical interferometer, one or more light detectors, and an electronic processor. The second light source is configured to output light of a different wavelength than the first source. The optical interferometer has optical reference and sample arms. The optical sample arm has a first optical path to transmit light received from the first and second light sources to an area of a target and has a second optical path to transmit light collected from the area of the target to one or more interference regions. The optical reference arm is configured to transmit light received from the first light source to the one or more interference regions. Each light detector is configured to produce electrical signals indicative of measured intensities of interfered light in a corresponding one of the one or more interference regions.

Abstract: A trading card (10) that is collectible by one or more users comprises a card body (12) and a first card insert (20). The card body (12) includes a first side (14), an opposed second side (16), and a first slot region (18A) that is formed into at least one of the first side (14) and the second side (16). The first card insert (20) is selectively positioned within the first slot region (18A). Additionally, the trading card (10) can further comprise a second card insert (20) that is selectively and alternatively positioned within the first slot region (18A). The card body (12) can further include a second slot region (18B). Each of the card inserts (20) can be interchangeably positioned within one of the first slot region (18A) and the second slot region (18B).

Abstract: A trading card (10) that is collectible by one or more users comprises a card body (12) and a first card insert (20). The card body (12) includes a first side (14), an opposed second side (16), and a first slot region (18A) that is formed into at least one of the first side (14) and the second side (16). The first card insert (20) is selectively positioned within the first slot region (18A). Additionally, the trading card (10) can further comprise a second card insert (20) that is selectively and alternatively positioned within the first slot region (18A). The card body (12) can further include a second slot region (18B). Each of the card inserts (20) can be interchangeably positioned within one of the first slot region (18A) and the second slot region (18B).

Abstract: The present invention relates to compounds and uses of compounds which interact with chitinase enzymes, in particular the inhibition of those enzymes.