Funai Electric Company Ltd.

Tetsuo Nishidate

Takayuki Murakami

Toyoshi Nogami

Hideki Kume

Hiromasa Sasaoka

Ryotaro Nakagawa

Masaaki Suetsugu

Hiroyuki Arase

Masaharu Shibata

Tomohiro Shirakawa

Takeshi Kurita

Takumi Hayashi

Kazuya Harada

A display device attachment structure comprises a plate member configured to be attached to a rear housing of a display device and to which a component of the display device is configured to be attached, a fastening member attached to the plate member for fixing the plate member to a back surface of the rear housing opposite a display surface of the display device via a fastening hole, and a fixing member attached to the plate member for fixing the plate member to the back surface of the rear housing, the fixing member being a different type of fastener than the fastening member.

Display device attachment structure, display device, and display device attachment structure attaching method

A lens driving device includes a lens holder for holding a lens, a supporter portion for supporting the lens holder in a movable manner, a drive portion for driving the lens holder, and an elastic portion for supplying the lens holder with a force in a predetermined direction. The supporter portion includes a shaft engaging with a bearing of the lens holder, and the force in a predetermined direction includes a force in a direction perpendicular to the shaft and a force in a direction to rotate the lens holder about the shaft.

Lens driving device and optical disc apparatus

An optical element holder comprises a placement face on which an optical element is placed, the placement face obtained using one face of a sheet of metal; a positioning wall used for positioning the optical element placed on the placement face, the positioning wall being a stepped portion obtained by folding of the sheet of metal; and a spring section, which is a portion obtained by further folding of part of the portion folded over in order to obtain the positioning wall.

Optical element holder and optical pickup provided with same

The optical element adjustment structure is provided with a rotating side including an optical element to be rotationally adjusted, and a non-rotating side where the rotationally adjusted optical element is securely arranged. The rotating side includes a tapered distal end section, and a contact section provided in an end section on a side opposite the distal end section and adapted to be contacted by an adjustment jig. The non-rotating side includes a recessed section for engaging the distal end section. The adjustment jig contacting the contact section is moved, whereby the rotating side rotates, the distal end section engaged in the recessed section being used as a fulcrum, and the optical element is rotationally adjusted.

Optical element adjustment structure and optical pickup

An optical pickup includes: a slide base, having: a first surface; and a second surface; a first substrate fixed to the first surface; a standing frame disposed on the second surface; a second substrate facing the standing frame; a laser diode operable to emit a laser beam to the disk and disposed in the standing frame; an optical, element supported by the second substrate and adapted to receive a reflected beam; a flexible flat cable. The flexible flat cable is bent so that one end portion of the flexible flat cable is connected to the second substrate. A curved portion is formed with a slit elongated in a longitudinal direction of the flexible flat cable and defines an outer portion and an inner portion. A width of the inner portion is narrower than a width of the outer portion.

Optical pickup

There is provided an optical pickup apparatus in which the assembling workability such as chucking of an LD holder by an adjusting jig and spreading of adhesive can be improved. In the optical pickup apparatus, multiple fitting portions (boss portions)formed on one of a side wall surfaceof a slide baseand an LD holderare fitted loosely into respective multiple fitted portions (hole portions)formed in the other one so that an adjustment spacerequired for adjustment of a laser diodeis ensured between each fitting portion and fitted portion. This allows the LD holderto be fixed temporarily to the side wall surfaceof the slide basewith the laser diodebeing adjustable freely, resulting in an improvement in the assembling workability such as chucking of the holder by the adjusting jig and spreading of adhesive.

Optical pickup apparatus

In the case of connecting a flexible substrate to a counterpart substrate by soldering, the area of a dead space on the counterpart substrate due to being covered with the flexible substrate is reduced to reduce the outside dimension of the counterpart substrate. Solder landsandon the flexible substrateare soldered to solder landsandon the counterpart substrate. The flexible substrateis divided into two branching piecesandby an incisionor a slitformed in such a manner as to extend from an intermediate part in the arrangement direction R of circuit patterns to the leading end of the flexible substrate. The space between the solder landsandon the respective piecesandis made equal to the space between the two spaced-apart solder landsandon the counterpart substrateby placing the piecesandformed by dividing the flexible substrateon one another.

Connection structure of flexible substrate

In an optical head according to the present invention, an act base on which an objective lens is arranged is formed in a rectangular shape with through holes formed in four corners thereof. A base on which a collimating lens is arranged has projections to engage with the through holes in correspondence with the through holes when the act base is arranged. With the through holes of the act base engaged with the projections of the base, an adhesive is injected to the through holes to thereby fix the act base to the base. This improves the accuracy in bonding between the base and the act base, and permits laser light of a more stable intensity accordingly to be irradiated to the optical disc, thus permitting suppressing failure involved in data recording or reading.

Optical head and optical disc device provided therewith

An optical pickup with improved vibration resistance and heat dissipation is mounted astride a main shaftand a secondary shaft. The travel of the optical pickup is adapted to be guided by the main shaft, where a secondary bearing partadapted to slide relative to the secondary shaftincludes an overlapping sliding faceand an auxiliary overlapping face, and a clearance &#x3b4; is formed between the auxiliary overlapping faceand the secondary shaftto improve ease of assembly. A control elementis mounted on a printed circuit boardmounted on a base member, and the control element is overlapped with a radiator plate. The radiator plateis provided with a pressing piece, and the pressing pieceis brought into elastic contact with the secondary shaftto reliably bring the overlapping sliding faceinto elastic contact with the secondary shaft

A tray drive mechanism has a simple structure, and yet both an optical disc clamping operation and a tray opening and closing operation can be driven by one feed motor. The tray drive mechanism comprises: a feed gear and a tray drive gear that are rotated by a feed motor; a rack member to mesh with the feed gear so as to be driven in direction to inner circumference of the optical disc; a plate trigger driven by the rack member so as to slide; and a cam slider to slide in linkage with the plate trigger. When the cam slider is slided in linkage with plate trigger so as to be driven in direction by the tray drive gear meshing with a rack, a boss of the cam slider pushes a slope portion of each of cam grooves and provided in a tray, so that the tray slides to cause a rack of the tray to mesh with the tray drive gear. Thus, the tray is opened and closed by the feed motor.

Tray device mechanism for optical disc apparatus

A pair of left and right pressing pieces and to press down the front part of the upward moving drive chassis are provided so as to protrude from the front part of the casing integrally therewith, the left side pressing piece of both the corresponding pressing pieces and is formed so as to be resiliently displaced with a protruding portion erected at the tip end thereof, and the inner side of the corresponding protruding portion is made into an inclined pressing plane which is inclined in the left direction at a prescribed angle so that it is turned downward so as to be widened outwardly, the front part side edge of the upward moving drive chassis is formed so as to be resiliently brought into contact with the inclined pressing plane thereof.

Disk player

A disk apparatus includes a chassis fixed to an apparatus body, a drive unit being ascendable or descendable with respect to the chassis through a plurality of gears by driving a motor, a pickup unit provided with an optical pickup that is movable by driving the motor, a cam slider arranged on the chassis and being movable in a direction, and a plate trigger provided with an inclined cam groove and being movable in the direction through cam engagement with the pickup unit and causes the drive unit to ascend or descend through cam engagement with the cam slider. The plate trigger and the cam slider move integrally in mesh with the gears coupled with the motor respectively. The tip of the tooth of the gear to be in mesh with a triangular tooth formed in the plate trigger is made sharp.

Growing community of inventors

Osaka, Japan

Tetsuo Nishidate