245 results about "Light absorption coefficient" patented technology

Provided is a colored glass casing having favorable characteristics as a casing of an electronic apparatus, namely having superior production cost, high strength, and light blocking properties. The colored glass casing clads an electronic apparatus, and is configured from a glass having a light absorption at the wavelengths of 380 nm to 780 nm of at least 0.7, preferably a glass having a light absorption coefficient of at least 1 mm-1. To result in the abovementioned glass, preferably 0.1-7% in mole percent on an oxide basis of at least one component selected from the group consisting of the metal oxides of Co, Mn, Fe, Ni, Cu, Cr, V, and Bi is contained as the coloring component in the glass.

An apparatus for measuring oil oxidation is capable of being mounted to mechanical devices for detecting power of fluorescent light reflected from oil in real time as an indication of the oil oxidation. A plurality of first optical fibers are connected to a light-emitting member for introducing the light into oil at different incidence points. A plurality of light-reflecting mirrors are immersed in the oil and disposed opposite to the incidence points. The light-reflecting mirrors are located at different distances from the incidence points. A plurality of second optical fibers are connected to the incidence points, respectively. A plurality of light-receiving members are connected to the second optical fibers for receiving the light and outputting the signals corresponding to the received light. A control portion calculates a fluorescence quantum yield and a light absorption coefficient of the oil based upon the signals from the light-receiving members and compares them with the reference values pre-stored in the control portion to determine the oil oxidation.

The invention discloses a near-infrared spectral tomography reconstruction method based on a neural network and belongs to the field of medical image processing. In a Boltzmann radiation transmissionequation, a light transmission process is regarded as an absorption and scattering process of photons in a medium, the interaction between light and tissue is determined by absorption coefficients, scattering coefficients and phase functions of reactive scattering distribution, only particle properties of the light are considered in transmission, and the volatility of the light is not considered;therefore, phenomena of polarization and interference correlated with the volatility of the light are not considered, and only the energy transmission of the light is tracked. The reconstruction method based on the BP neural network is used for reconstructing the distribution of the absorption coefficients of the light, and a reconstruction result of the distribution of the absorption coefficientscan be obtained through calculation. By means of the method, not only can the distribution of the absorption coefficients be accurately reconstructed, but also high computational efficiency is achieved.