| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamp that efficiently emits ultraviolet rays of a wavelength range of wavelengths of 300 to 380 nm necessary for polymerizing monomers, in order to provide the optimum light source for PSA (Polymer Sustained Alignment). SOLUTION: The lamp includes a discharge vessel 1 having discharge gas containing krypton gas and iodine gas sealed in, and a pair of electrodes 5, 6 arranged so as to opposed to each other pinching the discharge space formed inside the discharge vessel for emitting ultraviolet rays of a wavelength of 342 nm by forming exciting iodine molecules. A concentration of the iodine gas contained in the discharge gas is to be 0.04 to 0.9%, and at the same time, provided a field intensity applied on the discharge space is E (kV/cm), a partial pressure of the above rare gas is p1 (kPa), and a partial pressure of the iodine gas is p2 (kPa), the following formula holds good. E/p1≥(6.6×p2+124)×exp(-0.0093×p1). COPYRIGHT: (C)2010,JPO&INPIT
|
