Sony Corporation

Keigo Suzuki

Hidekuni Aizawa

Tamiaki Matsuura

Shigeru Shinzawa

Kenji Takase

Tsuguaki Shibata

Kazuo Shibuya

Hideo Ohata

A bar code reading apparatus comprises: a laser module () having a light-emitting device () and a light-receiving device () arranged in a substantially orthogonal state; a moving mirror having a mirror mounted on a stand, swing shafts provided on both sides of the stand, a magnet mounted on a lower side of the stand, a supporting pole arranged below the magnet, and an air-core driving coil in which the supporting pole is inserted; and a light-emitting lens for condensing a light beam from the light-emitting device () and reflecting the light beam to the mirror; the laser module, the moving mirror and the light-emitting lens being housed in a housing. Thus, miniaturization of the reading apparatus is realized, and the bar code reading apparatus is provided in which the light-receiving accuracy is improved while the swing of the mirror is secured.

Bar code reading apparatus, moving mirror for bar code reading apparatus, and manufacturing thereof

The present invention provides a laser module that can maintain weldability of a lens holder and improve machinability, and it protects a burr from being induced, and thereby improves optical accuracy, improves a reading accuracy of a bar code, improves mass productivity and reduces a manufacturing cost. In a laser module for a bar code reader, which has a packaged structure including a light emitting element and a light projection lens, for collecting a beam emitted from the light emitting element through the light projection lens and irradiating to an irradiation target, it includes: a cylindrical housing, in which the light emitting element is engaged with one end side; and a cylindrical lens holder, which is engaged with the other end side of the housing, for holding therein the light projection lens. Then, the lens holder is provided with: an inner cylinder, which is made of a metal having good machinability, for holding therein the light projection lens; and an outer cylinder engaged with a periphery of the inner cylinder and integrated with the inner cylinder, whose outer circumference is made of a metal having good weldability to be welded to the housing.

Laser module for bar code reader

Growing community of inventors

Fukushima, Japan

Keigo Suzuki