Abstract: A fluorescence measurement probe capable of stably receiving a maximum received light amount of a fluorescent light generated from a specimen onto which an excitation light is radiated. The fluorescence measurement probe is applied to a fluorescence measurement system provided with an optical system. A light source emits an excitation light. A detector receives the fluorescent light. A solid light guide path serves as an optical path of the excitation light as well as the fluorescent light. A lens is disposed between an edge surface of the solid light guide path and the specimen. When a radiation angle of the excitation light is set to 2? at a position where the excitation light is collected by the lens which collects the fluorescent light. A excitation light beam NA expressed by sin ? is set to 0.14 or more and 0.31 or less.

Abstract: There are provided a microchemical system capable of acquiring a highly accurate TLM output value and a method for calculating TLM output thereof. A microchemical system 1 comprises: a microchemical chip having a channel with a depth t in which a sample flows; an exciting light source 13 adapted to irradiate the sample with an exciting light through an objective lens 10 with a numerical aperture NA; a detecting light source 14 adapted to irradiate the sample with a detecting light coaxially with the exciting light through the objective lens 10; and a PD adapted to receive a transmitted light when the detecting light transmits the sample before and after formation of a thermal lens 12. When a TLM output is calculated in the microchemical system 1 on the basis of a received light amount of the PD, the depth t (?m) is set to the range of 75?t?300, the numerical aperture NA is set to the range of 0.04?NA?0.

Abstract: A fuel cell fuel reformer including a gas reactor for producing reformed fuel and an electric heater for heating the gas reactor. An external container includes an inner vacuum chamber, which accommodates the gas reactor and the electric heater, and receiving portions. An electric wire extends through the external container to supply electric power to the electric heater in the inner vacuum chamber. Fluid tubes are received by the receiving portions and extend through the external container. A sealant seals gaps between the fluid tubes and the receiving portions. The gas reactor, the fluid tubes, the external container, and the sealant each have thermal expansion coefficients, with the maximum one of the thermal expansion coefficients being ten-times the minimum one of the thermal expansion coefficients or less.

Abstract: A planar light source device comprises a light guide member having light scattering members for scattering light on the rear face of it, and a first LED module and a second LED module arranged on an end face of the light guide member. The light guide member has an area having no light scattering members in the vicinity of the LED modules, and has a corner-cut portion obtained by cutting a corner at an inclination angle ? in the light outputting direction of the first LED module. The first LED module is provided in the middle of the short side face of the light guide member, and the second LED module is provided on the corner-cut portion of the light guide member. The light from the first and second LED modules is outputted into an area where light scattering members are sparse.

Abstract: A planar light source device comprises a light guide member having light scattering members for scattering light on the rear face of it, and a first LED module and a second LED module arranged on an end face of the light guide member. The light guide member has an area having no light scattering members in the vicinity of the LED modules, and has a corner-cut portion obtained by cutting a corner at an inclination angle &thgr; in the light outputting direction of the first LED module. The first LED module is provided in the middle of the short side face of the light guide member, and the second LED module is provided on the corner-cut portion of the light guide member. The light from the first and second LED modules is outputted into an area where light scattering members are sparse.