摘要:
A beam collecting device and a laser emission device are disclosed incorporating a laminated optical waveguide array and refraction means therein. The laminated optical waveguide array is composed of a plurality of plate-like optical waveguides made of a material having a predetermined refractive index and a plurality of spacer members having a lower refractive index than that of said optical waveguides and arranged alternately with said optical waveguides. The spacer members take the form of cylindrical members, spherical members or plate-like members. The beam collecting device and laser emission device comprise a semiconductor laser array having a plurality of laser emitting parts arranged in fast and slow axis directions, the optical waveguide array, optical fibers and a collective lens. The laser emitting parts are divided into plural groups separated in the slow axis direction. Each of the optical waveguides collects plural laser beams from the laser emitting parts of a corresponding group aligned in the fast axis direction to an emission surface thereof and emits them to a corresponding one of the optical fibers. The refraction means is provided at the emission surface of each waveguide, at an incidence surface of each optical fiber or therebetween, so that the laser beam emitted from the emission surface of the waveguide at an acute angle is refracted to enter into the optical fiber at a gentle angle. Thus, laser beams entered into each optical fiber, without shining therethrough, are efficiently collected to the collective lens to be emitted to a target position.
摘要:
A fiber laser oscillator 1 is provided with a pumping light source 30 for emitting pumping beams Lin; beam condensing means (light duct) 50 for condensing the pumping beams Lin emitted from the pumping light source 30; and a laser oscillation optical fiber 10 for receiving the pumping beams Lin condensed by the beam condensing means 50 to generate an output laser beam Lout. The beam condensing means 50 has an incident surface Min for making the pumping beams Lin from the pumping light source 30 incident thereon and an emission surface Mout for emitting the pumping beams Lin therefrom. The emission surface Mout is made smaller in area than the incident surface Min. Further, the area of the emission surface Mout is made to be the same as or smaller than that of one end surface of the laser oscillation optical fiber 10.
摘要:
Optical waveguides, lens arrays and laser collecting devices are disclosed. The optical waveguide is formed with an output surface which is made smaller in dimension in a fast axis direction than an input surface. The waveguide collects in the fast axis direction plural laser beams output from plural laser emitting parts arranged in the fast axis direction and outputs from the output surface. The entrance surface of the optical waveguide is provided with first lenses to correspond respectively to the plural laser emitting parts. Each of the first lenses is located to be offset first predetermined distances from a corresponding one of the laser emitting parts in the beam traveling direction and in said fast axis direction, and the first predetermined distances are determined for each of the first lens in taking into account the focal length of each first lens and an angle which each first lens makes with the output surface of the waveguide.
摘要:
A fiber laser oscillator (1; 100) has an optical fiber (10), a pumping light emitting device (30), a light guide member (40; 140), and a core member (50). The core member (50) is configured to have a flat plate-shaped, cylindrical, annular, or hollow spherical configuration. The optical fiber (10) is wound around the surface of the core member (50) or partially embedded within the surface of the core member (50). The light guide member (40; 140) has a light receiving surface (40a) and an opposite surface (40b) opposing the receiving surface. The opposite surface (40b) of the light guide member (40; 140) contacts the circumferential surface of the core member (50). Light (Lin) emitted from the light emitting device (30) travels (i.e., pumping light (Lin)) travels within the core member (50) along the circumference of the core member (50) and excites the core portion (12) of the optical fiber (10).
摘要:
A fiber laser oscillator (1; 100) has an optical fiber (10), a pumping light emitting device (30), a light guide member (40; 140), and a core member (50). The core member (50) is configured to have a flat plate-shaped, cylindrical, annular, or hollow spherical configuration. The optical fiber (10) is wound around the surface of the core member (50) or partially embedded within the surface of the core member (50). The light guide member (40; 140) has a light receiving surface (40a) and an opposite surface (40b) opposing the receiving surface. The opposite surface (40b) of the light guide member (40; 140) contacts the circumferential surface of the core member (50). Light (Lin) emitted from the light emitting device (30) travels (i.e., pumping light (Lin)) travels within the core member (50) along the circumference of the core member (50) and excites the core portion (12) of the optical fiber (10).
摘要:
A planetary gear mechanism of the invention includes a housing, an input shaft that has an eccentric portion whose center lies on an eccentric axis that is displaced from an axis of input and output shafts, and is supported by the housing to be rotatable about the axis of the input and output shafts relative to the housing, an oscillating face plate that eccentrically oscillates via the eccentric portion, such that its rotation relative to the housing is restricted, and an output shaft to which an internally toothed gear that internally contacts and meshes with an externally toothed gear formed on the oscillating face plate is mounted, and which is rotatable about the axis of the input and output shafts relative to the housing. As the input shaft rotates, a circumferential position at which the externally toothed gear and the internally toothed gear mesh with each other changes, and rotation of the input shaft is delivered at a reduced speed to the output shaft. First pins that protrude from the oscillating face plate engage with insert holes formed in the housing, so that rotation of the oscillating face plate is restricted.
摘要:
In a planetary gear device, a first side plate as carrier is formed to a disc plate shape and secures thereto pins to protrude the pins from one end surface in an axial direction. The outside diameter of the first side plate is formed to be a small diameter on one side in the axial direction and a large diameter on the other side in the axial direction. The first side plate is provided with press-fitting hole portions with the pins press-fitted thereinto and small-diameter side concavities that are formed on the press-fitting hole portions on one side in the axial direction, that open to one end surface in the axial direction of the first side plate and that have internal surfaces being out of contact with the pins at at least parts thereof.
摘要:
A planetary gear mechanism of the invention includes a housing, an input shaft that has an eccentric portion whose center lies on an eccentric axis, and is rotatable about the axis of input and output shafts relative to the housing, an oscillating face plate that eccentrically oscillates relative to the input shaft via the eccentric portion, and rotates about the eccentric axis, and an output shaft that is provided with a second internally toothed gear that internally contacts and meshes with a second externally toothed gear formed on the oscillating face plate, and is rotatable about the axis of the input and output shafts relative to the housing. The housing is formed with a first internally toothed gear that internally contacts and meshes with a first externally toothed gear formed on the oscillating face plate. As the input shaft rotates, a circumferential position at which each externally toothed gear meshes with the corresponding internally toothed gear changes, and rotation of the input shaft is transmitted at a reduced speed to the oscillating face plate, of which rotation is delivered at a further reduced speed to the output shaft.
摘要:
A planetary gear mechanism of the invention includes a housing, an input shaft that has an eccentric portion whose center lies on an eccentric axis, and is rotatable about the axis of input and output shafts relative to the housing, an oscillating face plate that eccentrically oscillates relative to the input shaft via the eccentric portion, and rotates about the eccentric axis, and an output shaft that is provided with a second internally toothed gear that internally contacts and meshes with a second externally toothed gear formed on the oscillating face plate, and is rotatable about the axis of the input and output shafts relative to the housing. The housing is formed with a first internally toothed gear that internally contacts and meshes with a first externally toothed gear formed on the oscillating face plate. As the input shaft rotates, a circumferential position at which each externally toothed gear meshes with the corresponding internally toothed gear changes, and rotation of the input shaft is transmitted at a reduced speed to the oscillating face plate, of which rotation is delivered at a further reduced speed to the output shaft.
摘要:
In a planetary gear device, a first side plate as carrier is formed to a disc plate shape and secures thereto pins to protrude the pins from one end surface in an axial direction. The outside diameter of the first side plate is formed to be a small diameter on one side in the axial direction and a large diameter on the other side in the axial direction. The first side plate is provided with press-fitting hole portions with the pins press-fitted thereinto and small-diameter side concavities that are formed on the press-fitting hole portions on one side in the axial direction, that open to one end surface in the axial direction of the first side plate and that have internal surfaces being out of contact with the pins at at least parts thereof.