摘要:
A light source apparatus is equipped with at least three light sources each having a predetermined wavelength interval and different central wavelengths. At least one multiplexing means having wavelength selectivity, for multiplexing light emitted from each of a first group and a second group of the light sources is provided, the first group of light sources including odd ordered light sources and the second group of light sources including even ordered light sources when counted in order of lengths of the central wavelengths thereof. Multiplexing means not having wavelength selectivity, for multiplexing light emitted from the first group of light sources and the second group of light sources is also provided.
摘要:
A method for assembling a laser apparatus which condenses a laser beam and couples the laser beam to an optical fiber. After the optical fiber is fixed to a package, the whole or a part of an optical condensing system is fixed to the package through a fixing structure having at least one guide surface extending in at least one of first and second directions respectively parallel and perpendicular to the core axis of the optical fiber, by moving the whole or the part of the optical condensing system along the at least one guide surface to a predetermined position with respect to the core axis, and fixing the whole or the part of the optical condensing system to the fixing structure at the predetermined position.
摘要:
An optical three-dimensional structure measuring device including: optical three-dimensional structure information storing device (91) for storing optical three-dimensional structure information; specific layer extracting device (121) for comparing information values of the optical three-dimensional structure information stored in the optical three-dimensional structure information storing device with a predetermined threshold and extracting, as a specific layer area of the measurement target, an area equal to or greater than a predetermined range where the information values of the optical three-dimensional structure information equal to or greater than the predetermined threshold continue; missing area extracting device (122) for extracting, as missing areas, areas where the information values of the optical three-dimensional structure information are smaller than the predetermined threshold in the specific layer area; missing area range calculating device (123) for calculating sizes of ranges of the missing areas; and region-of-interest classifying device (124) for comparing the sizes of the ranges of the missing areas with a plurality of predetermined range determination reference values and classifying the missing areas into a plurality of types of regions of interest.
摘要:
A support member and an optical fiber are disposed side by side inside a tubular outer envelope of an optical probe to extend in the longitudinal direction of the outer envelope. A light deflectors which deflects light emitted from the front end of the optical fiber in the circumferential direction of the outer envelope is provided and the light deflector is rotated in response rotation of the support member by a drive means such as a motor, whereby an optical probe which can deflect light emitted from the circumferential surface of the outer envelope in the circumferential direction of the outer envelope and is easy to make thinner and down its cost can be obtained.
摘要:
An optical fiber is disposed in the direction of axis of the outer envelope inside a tubular outer envelope. Light emitted from the front end of the optical fiber is collected and projected on a body-to-be-scanned disposed externally of the outer envelope, and converged on the body-to-be-scanned. The outer envelope is filled with liquid so that the optical fiber is in the liquid.
摘要:
An optical probe includes a tubular outer envelope and a optical fiber which extends in the longitudinal direction of the outer envelope inside the outer envelope. By fixing a light deflecting element to the optical fiber and rotating the optical fiber by a driver, the light deflecting element is rotated. A protective member which has a higher resistance to wear than the outer peripheral surface of the optical fiber is fixed to a part of the outer peripheral surface of the optical fiber in a position near the front end of the optical fiber and is borne for rotation by a bearing portion on the probe outer envelope.
摘要:
Semiconductor lasers are driven such that high output laser beams are stably obtained without a long start up time. A method for driving semiconductor lasers by automatic current control or automatic power control with a constant current source involves the steps of: generating a pattern of drive current values for the semiconductor lasers, which is defined according to the amount of time which has elapsed since initiating driving thereof, that enables obtainment of substantially the same light output as a target light output by the automatic current control or the automatic power control; and varying the drive current of the semiconductor lasers in stepwise increments according to the pattern for a predetermined period of time from initiation of drive thereof A single pattern is used in common to drive the plurality of semiconductor lasers.
摘要:
An optical probe includes a tubular outer envelope and a optical fiber which extends in the longitudinal direction of the outer envelope inside the outer envelope. By fixing a light deflecting element to the optical fiber and rotating the optical fiber by a driver, the light deflecting element is rotated. A protective member which has a higher resistance to wear than the outer peripheral surface of the optical fiber is fixed to a part of the outer peripheral surface of the optical fiber in a position near the front end of the optical fiber and is borne for rotation by a bearing portion on the probe outer envelope.
摘要:
A combined-laser-light source includes: a plurality of semiconductor lasers; an optical fiber; and an optical system which converges a bundle of laser beams emitted from the plurality of semiconductor lasers, and makes the converged bundle of the laser beams enter the core of the optical fiber so that the laser beams are combined in the optical fiber when the laser beams pass through the optical fiber. The optical system is aligned with the optical fiber so that the converged bundle of the laser beams is incident on an area of an end face of the core when steady temperature control is performed on the combined-laser-light source, where the area is concentric with the end face of the core, and has a diameter equal to or smaller than half of the diameter of the core.
摘要:
One aspect of this invention provides an optical probe (600) that includes: a tubular sheath (622) having a distal end that is closed; a light guiding means (623) provided inside the sheath, and arranged along the longitudinal axis of the sheath; and a light condensing means (628) that is provided on an emitting end side of the light guiding means, and that deflects an optical path of a light emitted from the emitting end to cause the light to converge on a measurement target. The optical probe (600) scans a convergent light emitted from the light condensing means (628) on a plane that is substantially orthogonal to an optical axis direction of the convergent light, and guides a light from the measurement target (5) to the light guiding means (623) via the light condensing means. The optical probe (600) also includes a cylindrical tube member (610) that has an outer circumferential wall that is integrally joined to an outer wall of the sheath (622) along the longitudinal axis direction.