| 摘要 |
PROBLEM TO BE SOLVED: To provide a crystal resonator performing the heating of a crystal vibration piece simply compared with prior art.SOLUTION: In a crystal resonator 10 including a crystal vibration piece 11 having excitation electrodes 11a on both sides, and a container 13 including this crystal vibration piece 11, and having a metallic cover 13a and vacuum atmosphere internally, a ceramic film body or a plate body is applied to or brought into contact with the inner wall of the metallic cover 13a, as an infrared ray emission member 15. The infrared ray emission member 15 is warmed when the metallic cover is warmed by an external heat source, and the crystal vibration piece 11 is heated by an infrared ray emitted from the infrared ray emission member 15.SELECTED DRAWING: Figure 1 |
