Sharp Kabushiki Kaisha Corporation

Kabushiki Kaisha Takarabune

Akiho Yoshizawa

Masahiro Nakamura

Kyoji Kasuga

Mitsunobu Yoshida

Kenji Hatazawa

Hideaki Hamoto

Masao Ogino

Yoshinari Mishima

An optical head comprises a laser holder retaining a laser diode, and a holder support retaining the laser holder, and irradiates an information storage medium with laser light from the laser diode to perform recording/reproduction of information. In this optical head, the laser holder is a frame structure that fixes the laser diode, having an abutment portion protruding from a base side of the frame structure. Also, the holder support has a receiving surface that supports by abutment the abutment portion, and a through-hole that lets pass the laser light. The receiving surface is a plane approximately perpendicular to an optical axis of the optical head, the abutment portion being made as an arc surface having a central axis that passes through an emission point of the laser diode and is perpendicular to the optical axis.

Optical head and optical pickup device with a holder structure providing optical axis adjustment

A tilt adjustment device K for objective lenses which comprises: a positioning standfor supporting a holderwhich fixedly holds a first objective lens; at least three pinsandfor supporting an inferior surface of an edge of a second objective lensby each tip of the pins; a pin fixedly supporting memberfor fixedly supporting the ends of the pins; tilt adjusting means for tilting the pin fixedly supporting memberso that the second objective lensis tilt-adjusted around a principal point center with respect to an inferior surface of an edge of the first objective lens; and a press memberfor pressing a superior surface of the second objective lens, which can be removed after the second objective lensis fixed.

Tilt adjustment device for objective lenses and method of adjusting tilt of objective lenses

A chuck portion provided to keep a fixed positional relation with respect to a housing, holds a light source unit detachably. This chuck portion is displaced from an advanced position to a retracted position to displace the light source unit which is in a provisional position with respect to the housing, in a direction being away from the housing along a reference axis and the light source unit is retracted from the housing. In a state where the light source unit which is in this position is held by the chuck portion, the light source unit is slid and displaced in a direction crossing the reference axis with respect to the housing, angularly displaced about the reference axis and an axis crossing the reference axis, and then fixed to the housing.

Position adjustment apparatus, optical pickup apparatus and position adjustment method

A machine for making an emulsified product from a mixture of a gas and a liquid milk product capable of forming a foam which comprises a fixed whipping barrel, having a substantially labyrinth passage defined therein, and to which the liquid milk product, after having sucked by and mixed with the gas in a suction pump, is supplied under pressure. The liquid milk product mixed with air is emulsified as it flows through the labyrinth passage in the fixed whipping barrel and then supplied towards a rotary whipping barrel having therein a stirring rod rotatable about its longitudinal axis. The emulsified milk product is, during its passage through the rotary whipping barrel, stirred by the rotary stirring rod so that it can be further emulsified to provide a highly homogenized emulsion which is subsequently discharged from a dispenser.

Growing community of inventors

Higashihiroshima, Japan

Akiho Yoshizawa