Abstract: A laser oscillation device comprises a light emitting unit for projecting a pump laser beam, a laser medium for absorbing the pump laser beam and for emitting a spontaneous emission light, a saturable absorber for absorbing the spontaneous emission light and for emitting a pulsed light, and a holder for holding the laser medium in a close contact state, wherein a portion of the holder as appressed against at least one surface of the laser medium is made of a metal and the pump laser beam is projected to an edge portion of the laser medium as appressed against the holder.

Abstract: An ophthalmologic apparatus of an embodiment includes an acquiring part, a first optical system, a forming part and a controller. The acquiring part acquires a first front image of an eye fundus. The first optical system scans the fundus by signal light and detects interference light of returned light of the signal light and reference light. The forming part repeatedly forms a second front image of the fundus and a cross sectional image showing a cross section perpendicular to the second front image based on the detection results repeatedly obtained by the first optical system. The controller displays the first front image on a display means, displays, as a moving image, the second front images repeatedly formed by the forming part over the first front image, and displays, as a moving image, the cross sectional images repeatedly formed by the forming part.

Abstract: A material analytical sensor includes an emitter that irradiates a material with irradiation light including a wavelength region related to estimation of an amount of a component of the material, a controller that controls an irradiation cycle of the irradiation light, a receiver that receives reflected light from the material to output as a pulse signal and receives disturbance light to output as a noise signal, an integrator that samples N pulse signals during a predetermined period and integrates the sampled N pulse signals to obtain a first integrated value, and samples N noise signals during a same period as the predetermined period with a same cycle as the irradiation cycle and integrates the sampled N noise signals to obtain a second integrated value, and an extractor that deducts the second integrated value from the first integrated value to extract an amount of the reflected light.

Abstract: A slit lamp microscope capable of appropriately and easily carrying out the setting of the optical system is provided. In storage 102 of a slit lamp microscope 1, correspondence information 110 is stored in which standard setting conditions of an illumination system 8 and/or an observation system 6 are associated with each of multiple sites of an eye E. A searching part 121 searches the standard setting conditions corresponding to a site designated by an operation part 104 from the correspondence information 110. A setting-state acquiring part 122 acquires current setting states of the illumination system 8 and/or the observation system 6. A setting-state specifying part specifies, from among the current setting states acquired by the setting-state acquiring part 122, those differing from the standard setting conditions searched by the searching part 121. A controller displays information based on this specified result on the display 103.

Abstract: A measuring instrument comprises an spherical camera (8) for acquiring image data over total circumference, a laser scanner (6, 7) installed integrally with the spherical camera and for acquiring point cloud data of the surroundings, a synchronous control unit (9) for controlling acquisition of data of the spherical camera and the laser scanner, a storage unit (12) for recording the image data and the point cloud data, an absolute scale acquiring means for acquiring an absolute scale for obtaining an absolute position of when images are photographed by the spherical camera, and a control arithmetic unit (10), wherein the control arithmetic unit calculates a 3D model based on the image data, the point cloud data, and the absolute position.

Abstract: The invention provides a surveying system, which comprises an electronic level and staff devices belonging to either one of two or more groups, wherein the staff device has staffs with bar codes corresponding to groups, to which a staff belongs, and mobile station devices installed on the staffs, wherein the mobile station device has a mobile station display unit to display working data and a mobile station communication unit for performing wireless communication to and from the electronic level, wherein the electronic level has an image pickup unit for acquiring images within a range of working, a control device for extracting staff images from the images, for identifying as to which group the bar code pattern of the extracted staff image belongs and for determining three-dimensional position of the staff based on the staff image, and a main communication unit for transmitting the three-dimensional position obtained to the mobile station device, and wherein the mobile station device displays the relation bet

Abstract: An ophthalmological apparatus includes an optical system, a display device, a subject's eye position acquisition processor, and a control processor that acquires information on positional displacement of the optical system for inspection with respect to the subject's eye on the basis of the three-dimensional position to allow an alignment index image for performing alignment of the optical system for inspection with respect to the subject's eye in accordance with the information on positional displacement to be displayed in a screen of the display device in a pseudo manner, where the control processor has a plurality of display modes, in each of which the alignment index image is displayed in a different display form to allow the alignment index image to be displayed in the screen of the display device in a display mode selected from the plurality of display modes in a pseudo manner.

Abstract: An ophthalmological apparatus includes a photographing mode selection processor that selects any one of a plurality of photographing modes including a color photographing mode and a fluorescent photographing mode, a photographic optical system that photographs a subject's eye in a photographing mode selected by the photographing mode selection processor, a vision fixation optical system including a vision fixation target display that displays a vision fixation target, the vision fixation optical system projecting an image of the vision fixation target displayed in the vision fixation target display on the subject's eye, and a control processor that changes an amount of light of the vision fixation target in accordance with the photographing mode selected by the photographing mode selection processor.

Abstract: A rotation angle measuring device provided with a fixed unit and a movable unit relatively rotating with respect to the fixed unit, comprising a light source installed on either one of the fixed unit or the movable unit and for emitting a detection light and a reference position signal light, a polarizing plate for converting a detection light emitted from the light source to a polarized light, a polarized light rotating unit for rotating the polarized light around an optical axis of the light source as the center, a reference position signal light emitted at a reference rotating position of the polarized light, a stationary polarizing plate provided on either one of the fixed unit or the movable unit and to stand still with respect to a rotation of the polarized light, a photodetection sensor provided on the fixed unit or on the movable unit and for receiving the polarized light passing through the stationary polarizing plate and the reference position signal light, and an arithmetic unit for calculating a d

Abstract: A surveying instrument which comprises a rotation unit 7 adapted to direct a distance measuring optical axis to an object to be measured and the rotary drive unit 5 rotates the rotation unit, comprising a rotary motor for rotating an output shaft 6 and a clutch unit for connecting or disconnecting the rotary motor and the output shaft, wherein the rotary motor and the clutch unit are arranged in a series along the output shaft, and the output shaft is fixed to the rotation unit.

Abstract: A preparation system for surveying operation of the present invention includes a mobile station disposed at a known observation point and a fixed station disposed at an unknown reference point. The preparation system includes an arithmetic step to determine the position coordinate of the unknown reference point based on positioning data received by the mobile station, positioning data received by the fixed station, and a position coordinate of the known observation point, and an assigning step to assign the unknown reference point whose position coordinate is determined as the known reference point.

Abstract: The fundus photographing apparatus of the present invention includes an illumination light source that generates illumination light flux for illuminating a fundus (of a subject eye), a scanning optical system that converts the illumination light flux from the illumination light source unit into spot light to scan the fundus in two-dimensional directions of a horizontal direction and a vertical direction by the spot light, a light receiver that receives reflected light from each portion of the fundus illuminated by the spot light, and a fundus image acquiring unit that acquires a fundus image based on a signal from the light receiver, wherein the scanning optical system is provided with a scanner including a reflection mirror plate that rotates about orthogonal two axes to simultaneously deflect the spot light in the vertical direction and the horizontal direction for scanning.

Abstract: A subjective optomater that is capable of measuring accommodation ability of an eye while reducing the influence of accommodative convergence is provided. A subjective optometer includes: a visual target that is presented to an eye through a measuring optical axis; a measuring optical system that includes a spherical lens capable of changing spherical power on the measuring optical axis; a spherical power changer that changes the spherical power of the spherical lens; and an optical axis deflector that deflects the measuring optical axis so as to align the measuring optical axis with a visual axis of the eye, wherein accommodation ability is measured based on the spherical power of the spherical lens in a state in which the measuring optical axis is deflected by the optical axis deflector.

Abstract: A slit lamp microscope capable of appropriately and easily carrying out the setting of the optical system is provided. In storage 102 of a slit lamp microscope 1, correspondence information 110 is stored in which standard setting conditions of an illumination system 8 and/or an observation system 6 are associated with each of multiple sites of an eye E. A searching part 121 searches the standard setting conditions corresponding to a site designated by an operation part 104 from the correspondence information 110. A setting-state acquiring part 122 acquires current setting states of the illumination system 8 and/or the observation system 6. A setting-state specifying part specifies, from among the current setting states acquired by the setting-state acquiring part 122, those differing from the standard setting conditions searched by the searching part 121. A controller displays information based on this specified result on the display 103.

Abstract: Ophthalmological image analysis techniques that can present objective information about the state of distribution of the Meibomian glands are provided. An ophthalmological image analyzer 1 comprises a designator 22, an extractor 23 and a calculator 24. The designator 22 is configured to designate an area A to be analyzed in a photographed image I of an eyelid of an eye. The extractor 23 is configured to extract Meibomian-gland subareas B that represent Meibomian glands in the eyelid, on the basis of the luminance value of each pixel in the area A being analyzed which is designated by the designator 22. The calculator 24 is configured to acquire distribution information of Meibomian glands in the area A being analyzed, on the basis of the Meibomian-gland subareas B.

Abstract: According to one embodiment, a data processing method is used for processing collected data acquired with respect to each A-line by swept-source OCT using a wavelength sweeping light source having a predetermined wavelength sweeping range. The data processing method detects a reference signal assigned in advance to a clock, the wavenumber of which linearly varies along the time axis, in a predetermined wavelength position within the predetermined wavelength sweeping range. Then, the data processing method sequentially performs sampling of the collected data based on the clock with reference to the predetermined wavelength position where the reference signal detected is assigned. Further, the data processing method forms an image of a corresponding A-line based on the sampled collected data.

Abstract: According to one embodiment, a data processing method is used for processing collected data acquired with respect to each A-line by swept-source OCT using a wavelength sweeping light source having a predetermined wavelength sweeping range includes. The data processing method detects a reference signal assigned to a predetermined wavelength position within the predetermined wavelength sweeping range. The data processing method sequentially performs the sampling of the collected data based on a clock from a clock generator configured to operate independently of the wavelength sweeping light source with reference to the predetermined wavelength position where the reference signal detected is assigned. The data processing method forms an image of a corresponding A-line based on the collected data.

Abstract: The invention provides a tilt angle detecting device which has a two-liquid tube (19), comprising a transparent container (16) containing a first liquid (17) and a second liquid (18) having different property, specific gravity, and optical transmissivity from each other, wherein a movement occurs between the first liquid and the second liquid by tilting of the transparent container.

Abstract: A position at which evaluation of a defect was performed is easily identified. Relative positional relationships between three-dimensional coordinates of feature points of a photographed object and positions of a panoramic camera 111 are calculated based on a moving image, which is photographed by the panoramic camera 111 while a vehicle 100 travels. The position of the object photographed by a hyperspectral camera 114 is calculated based on the relative positional relationships and exterior orientation parameters of the hyperspectral camera 114 with respect to the panoramic camera 111.

Abstract: An ophthalmologic apparatus of an embodiment includes an acquiring part, a first optical system, a forming part and a controller. The acquiring part acquires a first front image of an eye fundus. The first optical system scans the fundus by signal light and detects interference light of returned light of the signal light and reference light. The forming part repeatedly forms a second front image of the fundus and a cross sectional image showing a cross section perpendicular to the second front image based on the detection results repeatedly obtained by the first optical system. The controller displays the first front image on a display means, displays, as a moving image, the second front images repeatedly formed by the forming part over the first front image, and displays, as a moving image, the cross sectional images repeatedly formed by the forming part.