Abstract: An optical scanning imaging/projection apparatus includes a light source that outputs illumination light and projection light in the visible range, an optical scanner that scans the illumination light and the projection light, which are output from the light source, along a predetermined scanning trajectory, a switch that switches the output from the light source so that the illumination light and the projection light are alternately output, an optical detector that detects observation light generated by a subject irradiated with the illumination light, a storage that stores data in which an intensity of the detected observation light detected is associated with information indicating a detection position on the scanning trajectory, and a projection light controller that controls, on the basis of the data stored in the storage unit, an intensity of the projection light to be applied to each position on the scanning trajectory.

Abstract: A scanning-type image acquisition device includes: drivers that respectively vibrate in an x direction and a y direction that are perpendicular to a longitudinal axis of an optical fiber that guides illumination light from a light source and cause a tip of the optical fiber to be spirally scanned on a subject; a drive-signal generating circuit that generates drive signals for driving the drive units; an adjustment section that adjusts the drive signals generated by the drive-signal generating circuit and generates position reference data; a photodetector that detects scattered light of the illumination light at each scanning position of an illumination light spot on the subject due to the drivers; and an image generating circuit that generates an image by arranging intensity values of the scattered light detected by the photodetector in pixels in accordance with the position reference data output from the adjustment section.

Abstract: A scanning endoscope including an optical fiber scanner that vibrates a distal end of the optical fiber that guides illumination light and emits the illumination light from the distal end thereof, a controller that conducts control for vibrating the optical fiber at a certain driving frequency set according to a resonance frequency of the optical fiber and for controlling amplitude of the vibration so as to be changed at a certain modulation frequency, and a movement detector that detects the resonance frequency of the optical fiber, wherein the controller changes the driving frequency and the modulation frequency at the same rate as the rate of change of the resonance frequency when the resonance frequency of the optical fiber detected by the movement detector changes.

Abstract: An optical scanning method includes detecting a resonance frequency of a tip of a fiber while sweeping a vibration frequency of the tip of the fiber over a predetermined frequency range, the tip of the fiber being supported to allow oscillation, determining a driving frequency of the tip of the fiber on the basis of the detected resonance frequency, and scanning light over an object by causing the light to be emitted from the tip of the fiber while driving and vibrating the tip of the fiber at the driving frequency.

Abstract: A scanning-type image acquisition device includes: drivers that respectively vibrate in an x direction and a y direction that are perpendicular to a longitudinal axis of an optical fiber that guides illumination light from a light source and cause a tip of the optical fiber to be spirally scanned on a subject; a drive-signal generating circuit that generates drive signals for driving the drive units; an adjustment section that adjusts the drive signals generated by the drive-signal generating circuit and generates position reference data; a photodetector that detects scattered light of the illumination light at each scanning position of an illumination light spot on the subject due to the drivers; and an image generating circuit that generates an image by arranging intensity values of the scattered light detected by the photodetector in pixels in accordance with the position reference data output from the adjustment section.

Abstract: An optical scanning observation apparatus includes: a light source selectively emitting a plurality of illumination lights of different colors; a light emission timing controller controlling light emission timing, based on a predetermined ratio of number of light emissions of each color of the illumination light emitted from the light source; a fiber guiding the illumination light from the light source; an actuator vibratory driving the tip part of the fiber; an optical system for irradiating the illumination light emitted from the fiber; an optical detector; and a signal processor.

Abstract: An optical scanning observation apparatus includes a light emission timing controller, a fiber, a driver, a photodetector, an offset processor that corrects an offset value based on an electrical signal output by the photodetector while a light emission timing controller suspends light emission of a light source, and a signal processor that generates an image signal based on the electrical signal for which the offset value was corrected by the offset processor.

Abstract: An optical scanning imaging/projection apparatus includes a light source that outputs illumination light and projection light in the visible range, an optical scanner that scans the illumination light and the projection light, which are output from the light source, along a predetermined scanning trajectory, a switch that switches the output from the light source so that the illumination light and the projection light are alternately output, an optical detector that detects observation light generated by a subject irradiated with the illumination light, a storage that stores data in which an intensity of the detected observation light detected is associated with information indicating a detection position on the scanning trajectory, and a projection light controller that controls, on the basis of the data stored in the storage unit, an intensity of the projection light to be applied to each position on the scanning trajectory.

Abstract: An optical scanning method includes detecting a resonance frequency of a tip of a fiber while sweeping a vibration frequency of the tip of the fiber over a predetermined frequency range, the tip of the fiber being supported to allow oscillation, determining a driving frequency of the tip of the fiber on the basis of the detected resonance frequency, and scanning light over an object by causing the light to be emitted from the tip of the fiber while driving and vibrating the tip of the fiber at the driving frequency.

Abstract: A scanning endoscope including an optical fiber scanner that vibrates a distal end of the optical fiber that guides illumination light and emits the illumination light from the distal end thereof, a controller that conducts control for vibrating the optical fiber at a certain driving frequency set according to a resonance frequency of the optical fiber and for controlling amplitude of the vibration so as to be changed at a certain modulation frequency, and a movement detector that detects the resonance frequency of the optical fiber, wherein the controller changes the driving frequency and the modulation frequency at the same rate as the rate of change of the resonance frequency when the resonance frequency of the optical fiber detected by the movement detector changes.

Abstract: Included are an optical fiber (11), a driver (21) that drives an emission end (11b) of the optical fiber (11), a current detector (55) that detects a current flowing in the driver (21), and a controller (31) that scans light emitted from the optical fiber (11) by controlling the driver (21) based on output of the current detector (55). The driver (21) comprises vibration elements (28a to 28d), ground terminals of the vibration elements (28a to 28d) are connected in common to the driver (21), and the current detector (55) detects the current at the power supply terminal of the vibration elements (28a to 28d).

Abstract: An optical scanning observation apparatus includes: a light source selectively emitting a plurality of illumination lights of different colors; a light emission timing controller controlling light emission timing, based on a predetermined ratio of number of light emissions of each color of the illumination light emitted from the light source; a fiber guiding the illumination light from the light source; an actuator vibratory driving the tip part of the fiber; an optical system for irradiating the illumination light emitted from the fiber; an optical detector; and a signal processor.

Abstract: An optical scanning observation apparatus includes a light emission timing controller, a fiber, a driver, a photodetector, an offset processor that corrects an offset value based on an electrical signal output by the photodetector while a light emission timing controller suspends light emission of a light source, and a signal processor that generates an image signal based on the electrical signal for which the offset value was corrected by the offset processor.

Abstract: A laser scanning type observation apparatus includes a pulsed-laser oscillation means irradiating pulsed laser to an object, a detector receiving light from the object to output a detection signal, a means detecting pulsed-laser oscillation to output a synchronous signal, a circuit delaying the synchronous signal for an optional amount of time to output a trigger signal, a means sampling the detection signal in synchronization with the trigger signal, a memory storing the sampled detection signal, a setting unit capable of setting delay time for delaying the synchronous signal in two or more stages within one period of the synchronous signal, and a decision unit determining an optimum delay stage for image formation using data on intensities of the detection signal at the respective delay stages, wherein the setting means fixes delay time for delaying the synchronous signal at delay time corresponding to the delay stage determined by the decision unit.

Abstract: There is provided an inside observation apparatus of an endoscope and the like which can perform an inside observation for irradiating an illumination light to a minute area of a surface of an object (for example, a living tissue) having a light scattering property and detecting a back-scattered light of the illumination light, can increase a detected light amount by a simply and low cost configuration by making an area of a detection region larger than an illumination region, and can reduce a time necessary to detect an body (for example, a blood vessel) to be observed and detect a region deeper than a conventional region.

Abstract: There is provided an inside observation apparatus of an endoscope and the like which can perform an inside observation for irradiating an illumination light to a minute area of a surface of an object (for example, a living tissue) having a light scattering property and detecting a back-scattered light of the illumination light, can increase a detected light amount by a simply and low cost configuration by making an area of a detection region larger than an illumination region, and can reduce a time necessary to detect an body (for example, a blood vessel) to be observed and detect a region deeper than a conventional region.

Abstract: A laser scanning type observation apparatus includes a pulsed-laser oscillation means irradiating pulsed laser to an object, a detector receiving light from the object to output a detection signal, a means detecting pulsed-laser oscillation to output a synchronous signal, a circuit delaying the synchronous signal for an optional amount of time to output a trigger signal, a means sampling the detection signal in synchronization with the trigger signal, a memory storing the sampled detection signal, a setting unit capable of setting delay time for delaying the synchronous signal in two or more stages within one period of the synchronous signal, and a decision unit determining an optimum delay stage for image formation using data on intensities of the detection signal at the respective delay stages, wherein the setting means fixes delay time for delaying the synchronous signal at delay time corresponding to the delay stage determined by the decision unit.

Abstract: There is provided an inside observation apparatus of an endoscope and the like which can perform an inside observation for irradiating an illumination light to a minute area of a surface of an object (for example, a living tissue) having a light scattering property and detecting a back-scattered light of the illumination light, can increase a detected light amount by a simply and low cost configuration by making an area of a detection region larger than an illumination region, and can reduce a time necessary to detect an body (for example, a blood vessel) to be observed and detect a region deeper than a conventional region.

Abstract: A biological observation apparatus comprises: a light source unit capable of selectively emitting illumination light beams of at least two or more kinds of wavelength regions; an irradiation optical system for irradiating a subject with the illumination light beams; a detection optical system for detecting scattered light beams from the subject, and acquiring respective images with respect to the respective wavelength regions; and an image processing section for performing comparison operation processing on at least two or more kinds of acquired images, wherein said two or more kinds of wavelength regions are selected so that a ratio of at least one spectral characteristic coefficient between at least one biological tissue serving as an identification target and at least another one biological tissue differing from the identification target with respect to at least one wavelength region among said wavelength regions is different from a ratio of this spectral characteristic coefficient therebetween with respec

Abstract: An ultrasonic treatment apparatus comprises an ultrasonic transmitting member which has a treatment portion for treating a target portion and which transmits ultrasonic vibrations to the treatment portion, a transducer which is connected to the ultrasonic transmitting member and includes a first element for vibrating the ultrasonic transmitting member in an axial direction thereof and a second element for vibrating the ultrasonic transmitting member in a torsional direction thereof, a rotation driving portion which freely rotates the transducer, a first driving portion which drives the first element in the transducer, a second driving portion which drives the second element in the transducer, and a control portion which independently controls the first driving portion, the second driving portion, and the rotation driving portion.