| 摘要 |
An athermalization compensation device (26, 126, 226) includes a frustoconical outer ring (51, 251), with opposite edge portions (53, 54, 253) offset radially and axially, and with a relatively low coefficient of thermal expansion. An inner ring (52, 252) has a relatively high coefficient of thermal expansion. In response to a temperature change, the inner ring exerts on the radially inner edge of the outer ring a force which flexes the outer ring so that the inner edge moves radially and axially in relation to the outer edge, in a manner which changes an axial dimension of the device. In an alternative embodiment, the outer ring has circumferentially spaced slots (264) extending into it from its radially inner edge, and the inner ring has a respective portion (281) disposed in each slot.
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