(57) An eyeglass lens processing apparatus (1) for processing a periphery of a lens, includes:
lens rotating means (100a) for rotating a pair of lens chuck shafts (102) that hold
an eyeglass lens; processing tool rotating means (300, 420) for rotating a processing
tool rotating shaft (161a, 400a) to which a processing tool (168, 400) for processing
the periphery of the lens is mounted; moving means (100c) for moving about the lens
chuck shafts or the processing tool rotating shaft as a moving shaft in an axis-to-axis
direction in which an axis-to-axis distance between the lens chuck shafts and the
processing tool rotating shaft is changed; a waterproof cover (61) provided with a
first elongated hole (75L, 75R) through which the moving shaft is inserted, the waterproof
cover configuring a processing chamber (60); and a shield unit (70) provided in the
waterproof cover for preventing grinding water from leaking out of the first elongated
hole, the shield unit being configured to be rotated in response to movement of the
moving shaft.
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