Abstract: There is provided a plastic optical fiber including a core and at least one layer of a clad formed on an outer circumferential surface of the core, wherein a transmission band is 100 MHz or wider, as measured under conditions of a wavelength of 650 nm and a launch NA=0.65; and a transmission loss is 350 dB/km or less, as measured under conditions of a wavelength of 650 nm and a launch NA=0.1, after exposure to an environment of a temperature of 105° C. for 1000 hours.

Abstract: There is provided a plastic optical fiber including a core and at least one layer of a clad formed on an outer circumferential surface of the core, wherein a transmission band is 100 MHz or wider, as measured under conditions of a wavelength of 650 nm and a launch NA=0.65; and a transmission loss is 350 dB/km or less, as measured under conditions of a wavelength of 650 nm and a launch NA=0.1, after exposure to an environment of a temperature of 105° C. for 1000 hours.

Abstract: The present invention relates to a reading device (1) for reading the fluorescence emitted from a fluorescent material present in a microarray (A), which is characterized in that it comprises a transmission light source (2) for transmitting light rays through the microarray (A); an excitation light source (6) for exciting the fluorescent material; an imaging means (4) for imaging the light passing through the microarray and imaging the fluorescence emitted from the fluorescent material; and a detection means (5) for detecting the position and/or size of a specific division arranged on the microarray on the basis of the images of the light which transmits through the microarray.

Abstract: A first light diffusion layer (1) and a second light diffusion layer (2) are provided. The first light diffusion layer (1) is formed by dispersing a first light diffuser (1B) comprising fine particles in a first base material (1A) formed of transparent resin by 20 to 50 wt %, the fine particles of the first light diffuser having a refractive index different from that of the first base material by 0.07 to 0.17 and having a weight average particle diameter of 1 to 12 &mgr;m, and the first light diffusion layer having a thickness of 50 to 200 &mgr;m. The second light diffusion layer (2) is formed by dispersing a second light diffuser (2B) comprising fine particles having a weight average particle diameter of 1 to 12 &mgr;m in a second base material (2A) formed of transparent resin by 0.1 to 10.0 wt %, and the second light diffusion layer having a thickness of 500 to 5000 &mgr;m and a Haze value of 50 to 85%.

Abstract: A first light diffusion layer (1) and a second light diffusion layer (2) are provided. The first light diffusion layer (1) is formed by dispersing a first light diffuser (1B) comprising fine particles in a first base material (1A) formed of transparent resin by 20 to 50 wt %, the fine particles of the first light diffuser having a refractive index different from that of the first base material by 0.07 to 0.17 and having a weight average particle diameter of 1 to 12 &mgr;m, and the first light diffusion layer having a thickness of 50 to 200 &mgr;m. The second light diffusion layer (2) is formed by dispersing a second light diffuser (2B) comprising fine particles having a weight average particle diameter of 1 to 12 &mgr;m in a second base material (2A) formed of transparent resin by 0.1 to 10.0 wt %, and the second light diffusion layer having a thickness of 500 to 5000 &mgr;m and a Haze value of 50 to 85%.

Abstract: A first light diffusion layer (1) and a second light diffusion layer (2) are provided. The first light diffusion layer (1) is formed by dispersing a first light diffuser (1B) comprising fine particles in a first base material (1A) formed of transparent resin by 20 to 50 wt %, the fine particles of the first light diffuser having a refractive index different from that of the first base material by 0.07 to 0.17 and having a weight average particle diameter of 1 to 12 &mgr;m, and the first light diffusion layer having a thickness of 50 to 200 &mgr;m. The second light diffusion layer (2) is formed by dispersing a second light diffuser (2B) comprising fine particles having a weight average particle diameter of 1 to 12 &mgr;m in a second base material (2A) formed of transparent resin by 0.1 to 10.0 wt %, and the second light diffusion layer having a thickness of 500 to 5000 &mgr;m and a Haze value of 50 to 85%.