Open AccessDYSPROSIUM IODIDE LAMP AND ITS USE IN PHOTOENGRAVING
Author(s) -
Yang Yong-Xiang,
Guofu Wang
Publication year - 1974
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.23.13-2
Subject(s) - dysprosium , iodide , materials science , brightness , optics , optoelectronics , chemistry , physics , inorganic chemistry
The working principle, structure and characteristics of a dysprosium iodide lamp are described. It is a vapour discharge lamp containing a mixture of dysprosium iodide and halmium iodide. With a lifetime of 200 hours, its luminous efficiency is above 70 lumen/watt and its colour temperature 6000 K. Trial applications in photoengraving show that the dysprasium-iodide lamp, as compared with the carbon-arc lamp, has the virtues of higher brightness, smaller dimensions, and greater stability and cleanness. As a new type of light source it is expected to improve the art of photoengraving.