Abstract: A dosimeter for radiation fields is described. The dosimeter includes a scintillator a light pipe having a first end in optical communication with the scintillator and a light detector. The light pipe may have a hollow core with a light reflective material about the periphery of the hollow core. The dosimeter may further include a light source that generates light for use as a calibrating signal for a measurement signal and/or for use to check the light pipe.

Abstract: A dosimeter (100) for radiation fields is described. The dosimeter includes a scintillator (1) a light pipe (2) having a first end in optical communication with the scintillator (1) and a light detector (6). The light pipe (2) may have a hollow core (3) with a light reflective material about the periphery of the hollow core (3). The dosimeter (100) may further include a light source (61) that generates light for use as a calibrating signal for a measurement signal and/or for use to check the light pipe (2).

Abstract: One embodiment sets forth a method for modifying video content stored on a hand-held digital video camera (DVC). The method includes transmitting video data to a computer system to which the hand-held DVC is coupled via a data connector, receiving a request for a set of instructions related to a processing operation being performed on the computer system and involving the video data, transmitting the set of instructions to the computer system via the data connector. The method also includes drawing power from the computer system via the data connector and charging at least in part a battery associated with the hand-held DVC with the power drawn from the computer system, where the hand-held DVC remains coupled to the computer system via the data connector for the steps of transmitting, receiving, drawing and charging.

Abstract: A dosimeter (100) for radiation fields is described. The dosimeter includes a scintillator (1) a light pipe (2) having a first end in optical communication with the scintillator (1) and a light detector (6). The light pipe (2) may have a hollow core (3) with a light reflective material about the periphery of the hollow core (3). The dosimeter (100) may further include a light source (61) that generates light for use as a calibrating signal for a measurement signal and/or for use to check the light pipe (2).

Abstract: An optical waveguide in the form of an optical fibre (10) having at least one longitudinally extending light guiding core region (11) composed at least in part of a polymeric material, a longitudinally extending core-surrounding region (12) composed of a polymeric material, and a plurality of light confining elements (15), such as, for example, channel-like holes, located within the core surrounding region. The light confining elements extend in the longitudinal direction of the core region and are distributed about the core region, and at least a majority of the light confining elements having a refractive index less than that of the polymeric material from which the core-surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.

Abstract: An optical waveguide in the form of an optical fibre (10) having at least one longitudinally extending light guiding core region (11) composed at least in part of a polymeric material, a longitudinally extending core-surrounding region (12) composed of a polymeric material, and a plurality of light confining elements (15), such as, for example, channel-like holes, located within the core surrounding region. The light confining elements extend in the longitudinal direction of the core region and are distributed about the core region, and at least a majority of the light confining elements having a refractive index less than that of the polymeric material from which the core-surrounding region is composed. A preform for use in manufacture of the optical waveguide is also disclosed.

Abstract: An optical fibre (1) having at least one longitudinally extending light guiding core region (11), a longitudinally extending core-surrounding region (12), and a plurality of light confining elements (15, 16, 17, 18), such as, for example, channel-like holes, located within the core-surrounding region (12). The light confining elements (15, 16, 17, 18) extend in the longitudinal direction of the core region and are located geometrically in zones that surround the core region. The aggregate cross-sectional area defined by the light confining elements within the respective zones increases with increasing radial distance of the zones from the core region. A preform for use in manufacture of the optical fibre is also defined.

Abstract: A method of inducing or enhancing the electro-optic properties of an optically transmissive material such as an optical fiber (1) which comprises applying an electric field by means of electrodes (4) to the optical fiber and subjecting the material to UV radiation (9).