Improvement of Color Rendering Spectrum Affected by Scandium Vapor Mixed with High Temperature Argon Medium

摘要

The arc lighting to obtain the environment to evacuate, save the life, keep the safety and be comfortable are focus on. The lack of radiation intensity and color rendering spectrum is problem because of inappropriate energy balance. This paper elucidates the improvement of color rendering spectrum affected by scandium vapor mixed with high temperature argon medium. The temperature for keeping the color rendering, lightness, radiation power increases with increasing the contamination ratio of scandium vapor using the xy coordinate in chromaticity diagram even if the temperature is low. When the arc contaminates the scandium, the mean distance, radiation power and lightness of temperature region for the aim area is small. This temperature region expands with increasing the Sc/Ar contamination ratio. Although the radiation and lightness increase with increasing the temperature, the mean distance becomes long. When the Sc contamination ratio is 10%, the mean distance becomes short (improves). The improvement of color rendering spectrum is expected by the control of balance between the broad continuous spectrum of argon and line spectrum of scandium with temperature distribution derived from current increment and/or arc pinch.