| 摘要 |
PROBLEM TO BE SOLVED: To provide a cryostat capable of effectively preventing dew condensation on the surface of a cell. SOLUTION: The cryostat includes: a casing 1 where incidence and emission openings are formed; a cell storage chamber provided in the casing; a temperature control means for controlling cell temperature; a first optical path pipe 11 for guiding light entering from the incidence opening of the casing to the cell storage chamber; a second optical path pipe 12 for guiding light through the cell storage chamber to the emission opening of the casing; first and second optical windows 15, 18 disposed in openings exposed to the outside, respectively, in the first and second optical path pipes; and a sealing material 19 that is disposed at the periphery of the first and second optical windows, seals the first and second optical path pipes, and has a vapor permeability of 30,000 cc cm<SP>2</SP>mm sec cm Hg×10<SP>10</SP>or less. COPYRIGHT: (C)2010,JPO&INPIT |
