| 20120032087 | LIGHT COLLECTING OPTICAL FIBER, PHOTODETECTION SYSTEM, OPTICAL COUPLING STRUCTURE AND RADIO RAY DETECTION SYSTEM - A light collecting optical fiber improves light injection efficiency into the optical fiber. The light collecting optical fiber is equipped with a plurality of optical waveguide portions and light collecting portions between the adjacent optical waveguides. The optical waveguide portion includes a core and a cladding layer surrounding the core and constitutes an optical fiber. The light collecting portion is formed in a shape bulging out in radial direction from the optical waveguide portion and is constituted so that it injects external light to the optical waveguide portion. | 02-09-2012 |
