Abstract: A laser diode assembly for an optical pickup includes a laser diode, a holding member, and a position adjustment member. The holding member has a housing portion formed therein. The laser diode is housed in the housing portion. The position adjustment member is disposed between the laser diode and an inner wall of the housing portion and configured to adjust a mounting position of the laser diode by abutting the inner wall and the laser diode.

Abstract: An optical pickup apparatus includes: first and second laser diodes to generate first and second laser beams, respectively; a first holder, made of metal, to incorporate the first laser diode; a second holder, made of metal, to incorporate the second laser diode; an objective lens; optical elements to guide the first and the second laser beam to the objective lens; a housing made of synthetic resin to house the first and the second holders, the objective lens, and the optical elements such that the first and the second holders are adjacent to each other; and a first heat-transfer gel filled in a first space between the first and the second holders, so as to transfer heat generated in the first laser diode from the first holder to the second holder as well as transfer the heat generated in the second laser diode from the second holder to the first holder.

Abstract: A mounting structure for an optical member comprising: an optical member; a holding member having the optical member mounted thereon; and a position adjustment member disposed between the optical member and the holding member, the position adjustment member configured to adjust a mounting position of the optical member.

Abstract: In an optical head device in which a lens holder (3) for mounting an objective lens (2) therein is formed integral with a housing (1) via a connecting part (5), a coil holder (6) having driving coils wound thereon is mounted, a movable part of an actuator is assembled by combining the lens holder (3) with the coil holder (6), an elastic support member (11) elastically supporting the movable part of the actuator on the housing (1) is strung to a support member (12) formed integral with the housing (1) and also strung to mounting parts (3a, 3b) formed integral with the lens holder (3), and, as the movable part of the actuator is supported on the housing (1) by the elastic support member (11), the lens holder (3) is detached from the housing (1) by removing a connecting part (5).

Abstract: In an optical head device in which a lens holder (3) for mounting an objective lens (2) therein is formed integral with a housing (1) via a connecting part (5), a coil holder (6) having driving coils wound thereon is mounted, a movable part of an actuator is assembled by combining the lens holder (3) with the coil holder (6), an elastic support member (11) elastically supporting the movable part of the actuator on the housing (1) is strung to a support member (12) formed integral with the housing (1) and also strung to mounting parts (3a, 3b) formed integral with the lens holder (3), and, as the movable part of the actuator is supported on the housing (1) by the elastic support member (11), the lens holder (3) is detached from the housing (1) by removing a connecting part (5).

Abstract: When a drop of the voltage of a battery is detected, a detector outputs two kinds of alarm signals in accordance with the degree of voltage drop. Two PALs for generating an alarm signal input the respective alarm signals to a selector. An alarm signal from another PAL which generates an alarm signal in accordance with the state of a panel switch and a sound signal from a speaker data generator which generates various sound signals in accordance with a signal from a CPU are also supplied to the selector. The selector selects one from these signals so as to drive a speaker. Since a means for generating an alarm signal is provided separately from the speaker data generator, an alarm sounding operation is ensured.