Optical semiconductor component package and optical pickup device

An optical pickup device comprising an optical semiconductor component package,

• the optical semiconductor component package including:
• a stem, having a component bearing surface, which includes a light emitter and a photoreceptor on the component bearing surface, the stem having an outline made up of (a) opposed first and second circular-arc parts, (b) a first straight-line part which connects each end of the first and second circular-arc parts and (c) a second straight-line part which connects each other end of the first and second circular-arc parts,
• wherein:
• the first and second circular-arc parts have a common center, and the first circular-arc part has a larger radius than that of the second circular-arc part.

An optical semiconductor component package, comprising:

• a light emitter;
• a photoreceptor;
• and
• a stem, having a component bearing surface, which has the light emitter and the photoreceptor, the component bearing surface of the stem being rotated about a light axis of the light emitter so as to carry out adjustments,
• wherein:
• the stem is made up of (a) opposed first and second circular-arc parts having different radiuses, (b) a first straight-line part which connects each end of the first and second circular-arc parts and (c) a second straight-line part which connects each other end of the first and second circular-arc parts, the first and second circular-arc parts having a center coinciding with the center of the rotation, and the photoreceptor being provided on a side of the first circular-arc part whose radius is larger than that of the second circular-arc part.

An optical pickup device comprising an optical semiconductor component package,

• the optical semiconductor component package including:
• a light emitter;
• a photoreceptor;
• and
• a stem, having a component bearing surface, which has the light emitter and the photoreceptor, the component bearing surface of the stem being rotated about a light axis of the light emitter so as to carry out adjustments,
• wherein:
• the stem is made up of (a) opposed first and second circular-arc parts having different radiuses, (b) a first straight-line part which connects each end of the first and second circular-arc parts and (c) a second straight-line part which connects each other end of the first and second circular-arc parts, the first and second circular-arc parts having a center coinciding with the center of the rotation, and the photoreceptor being provided on a side of the first circular-arc part whose radius is larger than that of the second circular-arc part.