| 摘要 |
PCT No. PCT/DE94/00702 Sec. 371 Date Dec. 5, 1995 Sec. 102(e) Date Dec. 5, 1995 PCT Filed Jun. 20, 1994 PCT Pub. No. WO95/01648 PCT Pub. Date Jan. 12, 1995A high-pressure metal halide lamp which is particularly suitable for inclusion in optical systems is run at specific power between 100 and 180 W per mm arc length. The lamp includes, per cm3 chamber volume, between 0.3 and 3 mu mol dysprosium, hafnium and lithium respectively and between 0.2 and 2 mu mol indium, whereby luminance of between 25 and 75 kcd/cm2 can be generated at color temperature of between 4500 and 7000 K. Light spots with a diameter of about 4 mm and a color reproduction index Ra of 80 are achieved by means of a special reflector. This makes it possible to use the lamp in combination with thin glass-fiber bunches for illumination purpose, e.g. in endoscopy. |
