Abstract:
A lithotripsy apparatus includes: a treatment laser beam source that emits a treatment laser beam that crushes a stone; a guide light source that emits guide light; a photodetector that detects return light that returns as a result of the emitted guide light being reflected at the stone; and a processor including hardware, the processor being configured to: measure a distance from the treatment laser beam source to the stone on the basis of the return light; determine a condition of a bubble occurring between the treatment laser beam source and the stone on the basis of the measured distance; and adjust a light quantity of the treatment laser beam on the basis of the determined condition of the bubble.
Abstract:
An endoscope apparatus includes: a light source that radiates a pulsed light beam onto an imaging subject; an imaging optical system; an image transmission optical system that transmits the image of the imaging subject; an optical sensor that has a light receiving surface on which a plurality of pixels are arrayed and that detects a light level of the image; and one or more processors, wherein the optical sensor obtains light levels by detecting, in a time division manner, a reflected light beam of the pulsed light beam at each of the pixels, and wherein the processors are configured to: calculate an observation distance to the imaging subject from the imaging optical system on a basis of the light levels.
Abstract:
Provided is an objective optical system including: a first spherical lens and a second spherical lens that are arrayed in this order from an object; and at least one of a first optical medium and a second optical medium, wherein the first optical medium is a solid or liquid disposed at an object side of the first spherical lens and is in close contact with a surface on the object side of the first spherical lens, over an entire optical path; and the second optical medium is a solid or liquid disposed at an opposite side of the second spherical lens from the object and is in close contact with a surface on the opposite side of the second spherical lens from the object, over the entire optical path.
Abstract:
An optical-scanning-type observation probe is provided with: an imaging optical system that illumination light scanned by an optical scanner enters and that focuses the illumination light in the form of a spot, multiple times; a projection optical system that emits illumination light coming from a focus position focused by the imaging optical system, toward a subject in the form of a spot; and a light-receiver that is provided independently of the imaging optical system and the projection optical system and that receives reflected light of the illumination light, the reflected light coming from the subject, via a light path different from that of the imaging optical system and the projection optical system.
Abstract:
Unnecessary emission of strong laser light is automatically prevented. Provided is a blood-vessel recognition system including: a laser-light source; a blood-vessel recognition probe that has a probe body that is inserted into a body and a laser-light emitting unit that is provided on the probe body and that emits laser light supplied from the laser-light source; an in-use-state determining unit that determines whether the blood-vessel recognition probe is in an in-use state in which the laser light emitted from the laser-light emitting unit is radiated onto living tissue in the body; and a control unit that controls the laser-light source on the basis of a determination result obtained by the in-use-state determining unit, such that the intensity of the laser light is reduced when the blood-vessel recognition probe is not in the in-use state, compared with when the blood-vessel recognition probe is in the in-use state.
Abstract:
While one beam is being branched into a plurality of beams with different optical path lengths, the beams can be converged on the same position in the optical-axis direction with a simple structure even when relative angles between the beams differ. Provided is a beam splitter apparatus including at least one beam splitter that branches the input pulsed beam into two; at least two light-guide members with different optical path lengths that propagate the pulsed beams branching off via the beam splitter; and a reflection optical system that endows a plurality of pulsed beams emitted from exit ends of the plurality of light-guide members with a relative angle and that converges the plurality of pulsed beams on the same position.
Abstract:
An optical scanning apparatus, including: an optical fiber (11); a holding unit (29) for holding an emission end (11a) of the optical fiber (11) in an oscillatable manner; and a driving unit (28a to 28d) for driving the emission end (11a), in which the holding unit (29) has a holding structure that is different between the vibration direction caused by the driving unit (28a to 28d)/a direction orthogonal to the vibration direction, and other directions.
Abstract:
A light treatment system includes: a probe configured to be inserted into a body cavity, the probe including an optical fiber configured to propagate light, and a light emitter that is provided at a distal end of the optical fiber, the emitter being configured to emit the light; a balloon catheter into which the probe is inserted, the balloon catheter including a distal end portion that is to be inserted into the body cavity and that is to be dilated by being supplied with a liquid including air bubbles; and an air bubble generator configured to generate the air bubbles to be included in the liquid and change a property of the air bubbles.
Abstract:
Provided is a scanning endoscope system including an illumination-light emitting unit that outputs illumination light emitted from a light source in a spot-like manner toward a subject, a light scanner that scans the illumination light output from the illumination-light emitting unit over the subject, and a light detector that is provided in a movable manner relative to the illumination-light emitting unit and that detects reflection light from a scan position on the subject over which the illumination light is scanned by the light scanner.
Abstract:
A scanning-endoscope image evaluation system includes: a scanning endoscope provided with a light detector and a fiber scanner that includes an optical fiber for guiding illumination light coming from a light source and emitting it from its distal end and an actuator that scans the emitted illumination light by vibrating the distal end of the optical fiber; and a chart for evaluating a characteristic of an image acquired by the scanning endoscope, wherein the distal end of the optical fiber and the light detector are disposed so as to face each other with the chart sandwiched therebetween, and forward scattered light that has been emitted from the optical fiber and that has passed through the chart is detected by the light detector.