@article{oai:niigata-u.repo.nii.ac.jp:00002028, author = {Sekine, Seishi and Ueno, Masatoshi and Suzuki, Hiroaki and Ohkawa, Masashi}, issue = {1}, journal = {Journal of light and visual environment}, month = {May}, note = {Characteristics of radiation from microcavities are investigated to verify the luminous efficacy of microcavity radiator that was estimated by John F.Waymouth in 1989. Electromagnetic waves in a rectangular microcavity and a cylindrical microcavity were analyzed based on the waveguide theory. The modes of electromagnetic waves in the microcavities are analyzed using a normalized eigenfunction. The conductivity and permittivity of metals are obtained by analyzing the motion equation of the free electron in the metals. The skin depth of tungsten is estimated with the emissivity of tungsten based on electromagnetic theory. Accordingly it is estimated that the luminous efficacy of radiation from the microcavity is expected to reach 118 lm/W.}, pages = {12--16}, title = {Theoretical Evaluation of Spectral Power Distributions of Radiant Energy from Microcavities(Special Issue "LUX PACIFICA '97 3rd PACIFIC BASIN LIGHTING CONGRESS")}, volume = {22}, year = {1998} }