| 摘要 |
An optical device includes an optical element that is secured to a base material, a temperature variable element the temperature of which is variable, the temperature variable element being secured to the base material such that light propagates between the temperature variable element and the optical element, a housing that houses the optical element and the temperature variable element, and a heat conducting medium that is disposed at a position that is different from a position of the base material and away from an optical path through which the light propagates, the heat conducting medium physically contacting the optical element and the temperature variable element.
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