Abstract: 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.

Abstract: An optical device for bar-code reading capable of improving the degree of freedom in design of component lenses so as to allow free positional adjustment of the lenses while ensuring downsizing and weight reduction of the device, and a method for manufacturing are disclosed. An optical device for bar-code reading comprises a light emitting element; a light projection lens for focusing light from the light emitting element so as to irradiate a bar code; a light receiving lens for focusing reflected light from the bar code and having formed therein a penetrating hole which penetrates a plane of incidence of light and a plane of outgoing of light, in which the light projection lens is inserted; and a light receiving element for receiving the light focused by the light receiving lens so as to perform photo-electric conversion.

Abstract: In order to obtaining an integrated optical apparatus in which a moving mirror and a frame may be omitted and which can be assembled in an integrated structure including a pivoting part, there is provided an integrated optical apparatus including: a projection and photodetection package containing therein a light emitting element, a projection lens, a photodetecting element, and a light receiving lens; a flexible thin sheet having elastic properties; the end of the flexible thin sheet being fixed to the light projection and photodetection package and the base end of the flexible thin sheet being fixed to a fixed portion to pivotably support the light projection and photodetection package to the fixed portion; and a projection and photodetection package pivoting means provided over both the light projection and photodetection package and the fixed portion.

Abstract: A light emitting and receiving device structure capable of compactly accommodating a light emitting element and a light receiving element and having an optical axis of an emitted beam of light in close proximity to an optical axis of a return beam of light to produce the light emitting and receiving device in a miniature size and lightweight. A one-piece structure consists of a cylindrical package having a bottom with its one end open and the other end closed with a bottom plate and a protruding pedestal member which is installed on the bottom plate of the package with its centerline concentric with the centerline of the package. The light receiving element is secured to the front end surface of the pedestal member, while the light emitting element is secured to the side face of the pedestal member, thus accommodating both devices in one package.

Abstract: 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.

Abstract: A light emitting and receiving device structure capable of compactly accommodating a light emitting element and a light receiving element and having an optical axis of an emitted beam of light in close proximity to an optical axis of a return beam of light to produce the light emitting and receiving device in a miniature size and lightweight. A one-piece structure consists of a cylindrical package having a bottom with its one end open and the other end closed with a bottom plate and a protruding pedestal member which is installed on the bottom plate of the package with its centerline concentric with the centerline of the package. The light receiving element is secured to the front end surface of the pedestal member, while the light emitting element is secured to the side face of the pedestal member, thus accommodating both devices in one package.

Abstract: An optical device for bar-code reading capable of improving the degree of freedom in design of component lenses so as to allow free positional adjustment of the lenses while ensuring downsizing and weight reduction of the device per se, and a method for manufacturing thereof are disclosed. An optical device for bar-code reading comprises a light emitting element; a light projection lens for focusing light from the light emitting element so as to irradiate a bar code; a light receiving lens for focusing reflected light from the bar code and having formed therein a penetrating hole which penetrates a plane of incidence of light and a plane of outgoing of light, in which the light projection lens is inserted; and a light receiving element for receiving the light focused by the light receiving lens so as to perform photo-electric conversion.