| http://www.w3.org/ns/prov#value | - The cleaning disc of claim 1, wherein the recess is a first recess and the brush is a first brush, the cleaning disc further comprising: a second brush coupled to the body, extending away from the first surface, and positioned to contact the laser lens during the cleaning operation, the second brush spaced from the first brush; a second recess in the first surface, the second recess spaced from th
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