Abstract: A semiconductor package formation arrangement includes a mold housing with an interior cavity having top, bottom and first and second end sides. A gate for transferring liquefied molding material extends to the first end side. A lead frame having a top surface, a rear surface opposite the top surface and a mold flow modifier forms a first cavity section between the top surface and the top side and a second cavity section between the rear surface and the bottom side. A topology of the lead frame causes liquefied molding material to fill the first and second cavity sections at different rates. The mold flow modifier extends away from the lead frame so as to compensate for the difference between the first and second rates.

Abstract: A semiconductor package formation arrangement includes a mold housing with an interior cavity having top, bottom and first and second end sides. A gate for transferring liquefied molding material extends to the first end side. A lead frame having a top surface, a rear surface opposite the top surface and a mold flow modifier forms a first cavity section between the top surface and the top side and a second cavity section between the rear surface and the bottom side. A topology of the lead frame causes liquefied molding material to fill the first and second cavity sections at different rates. The mold flow modifier extends away from the lead frame so as to compensate for the difference between the first and second rates.

Abstract: The invention relates to an apparatus for reading or writing information on a circular information carrier (D) having a periphery, said apparatus comprising a turntable (501) for clamping and rotating said information carrier (D), said information carrier (D) having an initial tilt from the radial direction of the turntable. The apparatus comprises additional means for applying an end load at the periphery of said information carrier, so as to apply a tilt of known value to said information carrier with respect to the radial direction of the turntable (501), said known value being larger than said initial tilt. The clamping surface of the turntable (501) may be tilted appropriately.

Abstract: An optical unit (10) for an optical scanning device includes a one-piece component (18) having a built-in beam splitter (14) and built-in portions configured to house a radiation source (20) and a radiation-sensitive detector (22). The optical unit has a good radiation efficiency and is small and light-weight. The one-piece component may be made of glass or a transparent plastic material and may also comprise a diffraction grating (16) and an objective lens (12).