| 摘要 |
PROBLEM TO BE SOLVED: To provide a high pressure lamp that improves color characteristics such as color rendition and color temperature without sacrificing light emission efficiency, light condensing efficiency and lifetime characteristic, and a high pressure lamp device using the same and a lighting device. SOLUTION: A media for filling a discharge vessel made from quartz glass is made from mercury, rare gas, halogens and alkaki metals containing at least Li, the halogen is not less than 10-3μmol/mm3, and Li has an amount that B/A satisfies the formula 0.15<=B/A<=0.45 when A is an integral radiation power of 402.5-407.5 nm and B is an integral radiation power of 667.5-672.5 nm in a light emission spectrum wavelength. Further, vapor pressure of mercury is not less than 10 MPa in lighting.
|
