Abstract: A surveying instrument including an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a narrow-angle image pickup module having an optical axis a part of which is common to the distance measuring optical axis, a distance measurement calculation module and an arithmetic control module, in which the wavelength dispersion compensation prisms which is constituted of a plurality of optical members having the different wavelength characteristics are provided in the part of which is common to the distance measuring optical axis and the narrow-angle image pickup optical axis, the arithmetic control module performs the distance measurement of a measuring point based on a signal of the distance measuring light and a signal of the reflected distance measuring light, and acquires a narrow-angle image in which the dispersion has been compensated by the wavelength dispersion compensation prisms.

Abstract: A distance measuring light projecting module comprises a light receiving module for receiving a reflected distance measuring light and a background light, a distance measuring unit for receiving the reflected distance measuring light and performs a distance measurement, an image pickup module for receiving the background light and for acquiring a background image, an optical axis deflector for integrally deflecting an optical axis of the distance measuring light and an optical axis of the background light, and an arithmetic control module for controlling the optical axis deflector, wherein the optical axis deflector has a rotary driving module for rotating a pair of disk prisms individually, and a projecting direction detecting module for detecting a rotation angle of each of the disk prisms.

Abstract: A surveying instrument comprises a distance measuring light projecting module, a light receiving module, an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a wide-angle image pickup module, a projecting direction detecting module configured to detect an optical axis deflection angle and a deflecting direction, a narrow-angle image pickup module, a distance measurement calculating module and an arithmetic control module, wherein the arithmetic control module is configured to control the optical axis deflector and the distance measurement calculating module, wherein the distance measurement calculating module is configured to perform a distance measurement of a measuring point based on a light emission timing of a distance measuring light and a light reception timing of a reflected distance measuring light, and wherein the narrow-angle image pickup module is configured to acquire a narrow-angle image with the distance measuring optical axis

Abstract: There is provided a surveying instrument including a distance measurement arithmetic module configured to measure a distance to an object and the reflection intensity of a reflected distance measuring light based on a distance measuring light and the reflected distance measuring light, a narrow-angle image pickup module configured to acquire an image with an axis of the distance measuring optical as a center, an optical axis deflector configured to have a wavelength dispersion compensation prism arranged in the distance measuring optical axis and deflect the distance measuring optical axis by the rotation of the wavelength dispersion compensation prism, an extracting means configured to extract an end face reflection image of the wavelength dispersion compensation prism from the image, and an arithmetic control module configured to calculate a deflecting direction of the optical axis deflector based on the end face reflection image extracted by the extracting means.

Abstract: A method of correcting a measurement value of a laser scanner includes: in a laser scanner including a light emitting unit, a light receiving unit, a distance measuring unit, an optical axis deflecting unit having at least a pair of prisms deflecting a distance measuring light and a reflected distance measuring light, and an emitting direction detecting unit detecting a deflection angle and an emitting direction of the distance measuring light from the optical axis deflecting unit, (a) measuring a distance to a measurement point, (b) detecting rotation angles of the prisms, and (c) obtaining, based on rotation angles of the prisms, a true distance measurement value corrected for a length of an optical path length difference in light emission and/or light reception caused according to the rotation angles of the prisms by subtracting the optical path length difference from a distance measurement value of the distance measuring unit.

Abstract: A surveying instrument including an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a narrow-angle image pickup module having an optical axis a part of which is common to the distance measuring optical axis, a distance measurement calculation module and an arithmetic control module, in which the wavelength dispersion compensation prisms which is constituted of a plurality of optical members having the different wavelength characteristics are provided in the part of which is common to the distance measuring optical axis and the narrow-angle image pickup optical axis, the arithmetic control module performs the distance measurement of a measuring point based on a signal of the distance measuring light and a signal of the reflected distance measuring light, and acquires a narrow-angle image in which the dispersion has been compensated by the wavelength dispersion compensation prisms.

Abstract: An ophthalmic device that comprises a first objective lens system, an optical system, an anterior eye segment photographing system, and a first optical-path combining member. The first objective lens system includes two or more lenses. The optical system includes a projection system configured to project light onto a target eye via the first objective lens system. The anterior eye segment photographing system is used for photographing an anterior eye segment of the target eye. The first optical-path combining member is located between the two or more lenses to combine an optical path of the optical system and an optical path of the anterior eye segment photographing system.

Abstract: An illumination system of an ophthalmologic microscope system projects illumination light onto a patient's eye. A light receiving system guides returning light of the illumination light to an image sensor. A display controller controls a display device to display an image obtained by the image sensor. A magnification changing unit changes display magnification of the image. An interference optical system detects interference light generated from returning light of measurement light from the eye and reference light. An optical scanner is used to scan the eye with the measurement light. An OCT data generation unit processes a detection result of the interference light to generate data. A condition setting unit sets a projection condition of the measurement light in accordance with change in the display magnification. An OCT controller controls the interference optical system and/or the optical scanner based on the projection condition.

Abstract: The measurement device includes a light source that emits the distance measurement light, a focusing member that transmits the reflected distance measurement light and reflects reflected collimated light to form an image of the measurement target object, the reflected collimated light being reflected by the measurement target object and in a wavelength band different from a wavelength band of the reflected distance measurement light, a distance measurement light reception unit that receives the reflected distance measurement light that has been transmitted through the focusing member and the internal reference light, and a collimated light reception unit that receives the reflected collimated light reflected by the focusing member.

Abstract: An ophthalmological microscope system, having an illumination system that projects illumination light onto a subject's eye. A light receiving system guides returning light of the illumination light to an image sensor or an eyepiece system. An interference optical system splits light into measurement light and reference light and detects interference light generated from returning light of the measurement light and the reference light. A designation unit is used for designating an operation mode. When an observation priority mode (or an OCT priority mode) has been designated, a controller executes first light amount control that restricts light amount of the measurement light (or second light amount control that restricts light amount of the illumination light) to make total light amount of the illumination light and the measurement light equal to or less than a predetermined value.

Abstract: A surveying instrument comprises a distance measuring light projecting module, a light receiving module, an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a wide-angle image pickup module, a projecting direction detecting module configured to detect an optical axis deflection angle and a deflecting direction, a narrow-angle image pickup module, a distance measurement calculating module and an arithmetic control module, wherein the arithmetic control module is configured to control the optical axis deflector and the distance measurement calculating module, wherein the distance measurement calculating module is configured to perform a distance measurement of a measuring point based on a light emission timing of a distance measuring light and a light reception timing of a reflected distance measuring light, and wherein the narrow-angle image pickup module is configured to acquire a narrow-angle image with the distance measuring optical axis

Abstract: An ophthalmologic apparatus according to some embodiments comprise an objective lens, a data acquisition system, and an anterior segment photographing system. The data acquisition system is configured to acquire data of a subject's eye optically via the objective lens. The anterior segment photographing system includes a pair of optical systems for photographing an anterior segment of the subject's eye from different directions via the objective lens.

Abstract: An illumination system for projecting illumination light onto an eye. A left (right) light receiving system includes a left (right) objective lens and left (right) image sensor, and guides returning light of the illumination light to the left (right) image sensor via the left (right) objective lens. The objective optical axes of the left and right light receiving systems are disposed nonparallelly to each other. A projection system includes a projection system objective lens, and projects light onto the eye via the projection system objective lens. An optical scanner is used for scanning the eye with the light from the projection system. A deflection member is disposed near the objective optical axes, disposed in the optical path of the projection system between the optical scanner and the projection system objective lens, and deflects the optical path.

Abstract: In an ophthalmic operation microscope, an illumination optical system illuminates a patient's eye with illumination light. An observation optical system is used for observing the patient's eye illuminated. An objective lens is disposed in an observation optical path. An interference optical system splits light from a light source into measurement light and reference light, and detects interference light generated from returning light of the measurement light from the patient's eye and the reference light. A first lens group is disposed between the light source and the patient's eye in an optical path of the measurement light. A second lens group is disposed between the first lens group and the patient's eye in the optical path of the measurement light. A deflection member is disposed between the first lens group and the second lens group in the optical path of the measurement light.

Abstract: A distance measuring light projecting module comprises a light receiving module for receiving a reflected distance measuring light and a background light, a distance measuring unit for receiving the reflected distance measuring light and performs a distance measurement, an image pickup module for receiving the background light and for acquiring a background image, an optical axis deflector for integrally deflecting an optical axis of the distance measuring light and an optical axis of the background light, and an arithmetic control module for controlling the optical axis deflector, wherein the optical axis deflector has a rotary driving module for rotating a pair of disk prisms individually, and a projecting direction detecting module for detecting a rotation angle of each of the disk prisms.

Abstract: An ophthalmologic apparatus includes a two-dimensional scanning optical system, a refractive optical system, and a concave mirror. The two-dimensional scanning optical system deflects light from a light source in a first angle range. The refractive optical system deflects the light deflected by the two-dimensional scanning optical system in a second angle range that is wider than the first angle range. The concave mirror includes a reflective surface in at least part of the rotational symmetry surface, and reflects the light emitted from the refractive optical system. The exit-side optical axis of the refractive optical system substantially coincides with the rotational symmetry axis of the rotational symmetry surface. The pupil location in the refractive optical system and the exit focus of the concave mirror are located at optically conjugate positions or in the vicinity of the positions. The exit focus is located at a subject's eye position.

Abstract: An electric distance meter is downsized by using a condensing optical member having a small outer diameter (effective diameter) as a condensing optical member in a light-receiving optical system, reducing a focal length of the condensing optical member without reducing a spread angle to a light-receiving optical fiber and reducing a diameter of the light-receiving optical fiber. An optical distance meter emits outgoing light from a light source to an object, and receives reflection light R from the object by a light receiver, so as to perform distance measurement. The optical distance meter includes an emitting optical system which irradiates the object by the emission light via an objective lens and a light-receiving optical system which guides the reflection light via the objective lens to the light receiver, and a cone prism which changes a cross-section shape of a light beam without generating a transmission deflection angle is provided.

Abstract: An electric distance meter is downsized by using a condensing optical member having a small outer diameter (effective diameter) as a condensing optical member in a light-receiving optical system of reflection light from an object, reducing a focal length of the condensing optical member without reducing a spread angle to a light-receiving optical fiber and reducing a diameter of the light-receiving optical fiber. An optical distance meter 10 emits outgoing light E from a light source 15 to an object, and receives reflection light R from the object by a light receiver 22, so as to perform distance measurement.

Abstract: A laser surveying system, comprising a light source for emitting a laser beam, a projection optical system for turning the laser beam from the light source to a parallel luminous flux, a scanning unit for projecting the luminous flux of the projected laser beam for scanning, a scanning direction detecting unit for detecting a scanning direction, a photodetection optical system for receiving a reflected light of the projected laser beam from an object to be measured, a photodetection element for performing photo-electric conversion of the reflected light received via the photodetection optical system, and a distance measuring unit for measuring a distance based on a signal from the photodetection element, wherein the projection optical system has a luminous flux diameter changing means, and a luminous flux diameter of the projected laser beam is enabled to be changed.

Abstract: A laser surveying system, comprising a light source for emitting a laser beam, a projection optical system for turning the laser beam from the light source to a parallel luminous flux, a scanning unit for projecting the luminous flux of the projected laser beam for scanning, a scanning direction detecting unit for detecting a scanning direction, a photodetection optical system for receiving a reflected light of the projected laser beam from an object to be measured, a photodetection element for performing photo-electric conversion of the reflected light received via the photodetection optical system, and a distance measuring unit for measuring a distance based on a signal from the photodetection element, wherein the projection optical system has a luminous flux diameter changing means, and a luminous flux diameter of the projected laser beam is enabled to be changed.