US 2003/0165108 A1 · Optical pickup device

Abstract

In an optical pickup device, reliability of a holding structure for an optical component (a half mirror) with respect to a pair of mounting frames is intended to be enhanced. A half mirror (5) is arranged so as to bridge a first frame (11) and a second frame (12). A side face (5C) positioned in a part in which one side of an emitting face (5B) (a mounting face) of this half mirror 5 and the first frame (11) are overlapped is fixed to the first frame (11) by adhesives (13A) of two contact points. On the other hand, a side face (SD) positioned in a part in which the other side of the emitting face (5B) and the second frame (12) are overlapped is fixed to the second frame (12) by an adhesive (13B) of one contact point. In this manner, even in case where the frames (11, 12) have been displaced due to thermal expansion, the adhesives (13A, 13B) will not be flaked off, and bonding strength of the half mirror will be enhanced.

Claims13

Dependent claims

An optical pickup device comprising:

a light source for irradiating a light;
a pair of mounting frames which are opposed to each other interposing a space for passing the light from the light source;
an optical component in a polyhedral shape which is mounted on the mounting frames in a partially overlapped manner and adapted to polarize the light;
and
three adhesive parts, wherein two of the adhesive parts fix one of faces of the optical component, which are substantially parallel to an optical axis of the light, to one of the pair of mounting frames in two contact points, and one of the adhesive parts fixes the other face of the optical component, which are substantially parallel to an optical axis of the light, to the other mounting frame in one contact point.

2 more elements

Dependencies are inferred from the claim text.

Optical pickup device

Life of this patent

Optical pickup device

Life of this patent

Abstract

Claims13