Abstract:
An inner surface shape measuring apparatus that measures an inner surface shape of a tested object by using a light-section method includes: a projection section which includes an outer peripheral section having a tubular shape and having a slit that light is capable of penetrating and that is provided in a circumferential direction, and a light source unit having a light-emitting element and arranged in the outer peripheral section, the projection section projecting a luminous flux that has a predetermined thickness from the slit onto the tested object; and an imaging section which images the inner surface of the tested object with the luminous flux projected thereon.
Abstract:
An inner surface shape measurement device for measuring a shape of an inner surface of a test target, and includes a light source, an optical system which converts light emitted by the light source into a disc-shaped light beam to cause the light beam to be emitted toward an inner surface of the test target, a photography unit which captures an image of a state in which the light beam is projected on the inner surface of the test target, and a wiring which supplies power for driving the light source. The optical system, the light source and the photography unit are disposed in this order along a same axis line, and the wiring extends from the light source toward the photography unit.
Abstract:
An endoscope apparatus measures a subject using a pattern projection image of the subject on which a light and dark pattern of light is projected. The endoscope apparatus includes an insertion tube having a central axis, an image sensor, an objective optical system configured to form an image of the subject on the image sensor, an illumination light source, a pattern projector configured to project the light and dark pattern onto the subject, a projection window for the pattern projector, and an observation window for the objective optical system. The objective optical system has a prism configured to direct light incident through the observation window to a direction toward the image sensor, and the objective optical system is disposed such that an optical axis of the light directed by the prism and incident on the image sensor is offset relative to the central axis of the insertion tube.
Abstract:
An endoscope configured to measure a specimen using a stripe image formed by projecting a light-dark pattern on the specimen, the endoscope including an insertion portion having an elongated shape; an imaging unit provided at a distal portion of the insertion portion and configured to acquire an image of the specimen; a lighting unit configured to illuminate an observation field of view of the imaging unit; and a pattern projector which emits projection light configured to project the light-dark pattern to the specimen and project the light-dark pattern on the specimen. The imaging unit includes an image sensor configured to image the image of the specimen; and an objective optical system configured to form the image of the specimen on the image sensor. The pattern projector includes a pattern generator configured to generate the light-dark pattern; and a projection optical system provided at the distal portion of the insertion portion and configured to emit the projection light to the specimen via the light-dark pattern. A radiation angle of the projection light in the projection optical system is smaller than an angle of view of the objective optical system. The objective optical system is in focus at farther point side than a minimum object distance which is a minimum value of an object distance at which the entire projected light-dark pattern enters an imaging field of view of the image sensor.
Abstract:
Provided with an endoscope device configured to measure a specimen using a pattern projection image of the specimen on which a light and shade pattern of light is projected, includes: an imaging unit configured to acquire an image of the specimen; an illumination unit having a first light source configured to emit illumination light to illuminate an observation field of vision of the imaging unit; a pattern projection unit having a second light source configured to emit projection light to project the light and shade pattern on the specimen; a display unit configured to display the image acquired by the imaging unit; and a control unit configured to control the imaging unit, the illumination unit, the pattern projection unit, and the display unit.
Abstract:
An endoscopic apparatus includes an image generation unit generates an image including subject images, a display unit displays the image and a control unit controls measurement of a size of a subject based on the image, the control unit performs first processing of displaying a moving image including one subject image on the display unit, second processing of, after the first processing, displaying all of subject images used for the measurement or all of images based on one subject image used for the measurement on the display unit as still images, and third processing of, after the second processing, designating a measurement point based on an instruction of a user, and measuring the size of the subject at the designated measurement point based on either an image based on all of subject images used for the measurement or all of the plurality of images based on the one subject image.
Abstract:
An endoscope apparatus includes an imaging element, a video signal generating circuit, an illuminator, and one or more controllers. An imaging area in which a plurality of pixels are disposed includes a scanning area. In a case in which a first operation mode is set, the one or more controllers control the imaging element such that at least parts of the exposure periods of the pixels disposed in at least a part of the scanning area overlap each other. In a case in which a second operation mode is set, the one or more controllers control the illuminator such that the light source is turned on in a period in which at least parts of the exposure periods of the pixels disposed in at least a part of the scanning area overlap each other.
Abstract:
An endoscope apparatus and a measuring method measure a subject using a pattern projection image obtained by projecting a fringe pattern onto a subject. The endoscope apparatus includes an elongated insertion section, an imaging section at a tip portion of the insertion section to acquire the image of a subject, an illumination section at the tip portion of the insertion section to emit the illumination light that illuminates an observation visual field of the imaging section, and a pattern projection section at the tip portion of the insertion section to project a fringe pattern onto the subject. A tip surface of the insertion section includes an objective optical system that forms the image of the subject on the imaging section, one or more illumination windows through which illumination light is emitted, and one projection window through which a fringe pattern is projected onto the subject from the pattern projection section.
Abstract:
An inner surface shape measurement device for measuring a shape of an inner surface of a test target, and includes a light source, an optical system which converts light emitted by the light source into a disc-shaped light beam to cause the light beam to be emitted toward an inner surface of the test target, a photography unit which captures an image of a state in which the light beam is projected on the inner surface of the test target, and a wiring which supplies power for driving the light source. The optical system, the light source and the photography unit are disposed in this order along a same axis line, and the wiring extends from the light source toward the photography unit.
Abstract:
An endoscope apparatus measuring a subject using a pattern projection image of the subject on which a light and dark pattern of light is projected, includes an insertion tube; an image sensor; an objective optical system forming the subject image on the image sensor; an illumination light source illuminating the subject; a pattern projector projecting the light and dark pattern onto the subject; and a projection window disposed at a distal end portion of the insertion tube. When the projection window is viewed from the front and the distal end portion of the insertion tube is divided into two sides by an imaginary first plane which includes a central axis of the insertion tube, a center of the projection window is at one of the two sides of the distal end portion of the insertion tube. An observation window is disposed at the distal end portion of the insertion tube. When the projection window is viewed from the front, a center of the observation window is disposed at the other of the two sides of the distal end portion of the insertion tube.