Patent ID: 7130260

Claim:
An apparatus for fixing a half mirror of an optical pickup, comprising: a retaining seat having an inclined side surface and an inclined end surface which are orthogonal to each other, the retaining seat is formed on one side surface of a light passage hole formed in a housing; a groove formed between the inclined side surface and the inclined end surface; and a positioning seat having an inclined side surface flush with the inclined side surface of the retaining seat, the positioning seat is formed on another side surface of the light passage hole, wherein both end portions of the half mirror are disposed on the retaining seat and the positioning seat respectively whereby the half mirror is positioned in an inclined state, wherein an adhesive agent is injected between each of the both end portions of the half mirror and each of the seats and into the groove, and wherein one side surface of the groove is formed in an arcuate shape whereby a width of a central portion of the groove is narrow and widths of both ends of the groove are wide.