Kabushiki Kaisha Topcon

The Burton Corporation

Masayuki Momiuchi

Fumio Ohtomo

Yoshiaki Goto

Taizo Eno

Hiroshi Koizumi

Masahiro Ohishi

Kazuki Osaragi

Hideo Sagehashi

Hitoshi Otani

Hidei Kimura

Kaoru Kumagai

Akira Takada

Shigenori Nagano

Katsuhiko Kobayashi

Toshikazu Adegawa

Shinya Ikoma

Wataru Ooyagi

This invention relates to a visible image unit identification code structure using a spatial visible image forming device. A spatial visible image forming device is used that includes: a laser source that emits a laser beam in an invisible region; a scanning means that scans the laser beam; a condensing optical system that condenses the laser beam to a drawing scheduled point in a space so as to cause plasma emission of a gas; and a control means that controls oscillation timing of the laser source and scanning timing of the scanning means so as to generate the plasma emission at the drawing scheduled point in a time series and draw a visible image as an afterimage phenomenon of the plasma emission. A visible image unit identification code formed by combining and arranging multiple kinds of multiple visible image units in different states including different lightnesses/darknesses, colors or shapes or the like is displayed in a space such as in air or in other gases or in water, and information can be transmitted by reading the visible image unit identification code using a reading means from any direction.

Visible image unit identification code structure

An image acquiring device comprises a first camerafor acquiring video images, consisting of frame images continuous in time series, a second camerabeing in a known relation with the first camera and used for acquiring two or more optical spectral images of an object to be measured, and an image pickup control device, and in the image acquiring device, the image pickup control device is configured to extract two or more feature points from one of the frame images, to sequentially specify the feature points in the frame images continuous in time series, to perform image matching between the frame images regarding the frame images corresponding to the two or more optical spectral images based on the feature points, and to synthesize the two or more optical spectral images according to the condition obtained by the image matching.

Image acquiring device and image acquiring system

A displacement measuring device, comprising a pattern projecting unit, a pattern image pickup unit capable of relatively displacing with respect to the pattern projecting unit and a control unit, wherein the pattern projecting unit projects a displacement detecting pattern to the pattern image pickup unit, the pattern image pickup unit picks up the displacement detecting pattern as projected, the control unit circulates image of the displacement detecting pattern picked up by the pattern image pickup unit to the pattern projecting unit, updates the displacement detecting pattern projected by the pattern projecting unit to the displacement detecting pattern as circulated, and projects the displacement detecting pattern as updated to the pattern image pickup unit, wherein relative displacement between the pattern projecting unit and the pattern image pickup unit is obtained by dividing a displacement amount of the displacement detecting pattern in the image acquired by circulation by the number of circulations.

Displacement measuring method and displacement measuring device

A three-dimensional input device, which comprises two optical measuring means as set at a predetermined interval from each other, and for measuring a three-dimensional position of an object to be measured at a real time based on a direction of an object to be measured as obtained individually by the two optical measuring means and the predetermined interval and also has a three-dimensional position detecting device which is capable of being mounted on a human body, and a control unit, wherein the control unit generates input information based on change and mode of change of three-dimensional position of the object to be measured.

Three-dimensional input device and input system

An image pickup device, which comprises an optical characteristics changing unit (), an optical system () containing an objective lens () and for leading a light from the objective lens to the optical characteristics changing unit, and an image pickup element () for receiving a light via the optical characteristics changing unit, wherein the optical characteristics changing unit has two or more dividing units, and has a configuration where one of the dividing units is selectively disposed along an optical path, and the dividing unit has a first region to select a specific wavelength from the light coming from the optical system and a second region where optical characteristics of the light from the optical system are not changed.

Image pickup device

A spectral image sensor device comprises a first optical systemandincluding an objective lens, a luminous fluxes selecting memberfor allowing a part of the luminous fluxes to pass via the first optical system selectively, an optical memberwhere the luminous fluxes selecting member is disposed so as to be at focal position on an object side or approximately at focal position on an object side, and an interference membrane is formed, and wavelength range of the luminous fluxes for passing through the luminous fluxes selecting member is selected, depending on position of the luminous fluxes selecting member, a second optical systemfor guiding the luminous fluxes toward the optical member, and an image sensorfor receiving a light in wavelength range as selected by the optical member.

Spectral image sensor device

A technique for selecting two or more wavelengths of output light by a simpler structure is provided. A laser apparatus includes a laser oscillation portion for oscillating laser light; a nonlinear crystal inputting the laser light from the laser oscillation portion as a fundamental wave, the nonlinear crystal converting the fundamental wave into a second harmonic wave and changing conversion efficiency according to a temperature thereof, the nonlinear crystal having a periodically poled structure; and a ratio control means for controlling a ratio of the fundamental wave and the second harmonic wave outputting from the nonlinear crystal by controlling the temperature of the nonlinear crystal.

Laser apparatus and distance measurement apparatus

A distance measuring apparatus for measuring a distance to a target point in a target area comprises a laser oscillator for generating a laser beam having a first wavelength, a nonlinear crystal into which the laser beam having the first wavelength generated by the laser oscillator enters, the nonlinear crystal generating a laser beam having a second wavelength, a collimator lens at which the laser beam having the first wavelength generated by the laser oscillator and the laser beam having the second wavelength generated by the nonlinear crystal are concentrated and are transformed into parallel light flux, a laser device provided with the laser oscillator, the nonlinear crystal, and the collimator lens, an output unit for outputting the laser beam having the first wavelength and the laser beam having the second wavelength at the same time, which are emitted by the laser device, while scanning the target area, a selective reflective mirror for selectively reflecting the laser beam having the first wavelength and the laser beam having the second wavelength that are reflected at the target point in the target area, a first light receiving unit which receives the laser beam having the first wavelength selected at the selective reflective mirror and outputs a first signal, a second light receiving unit which receives the laser beam having the second wavelength selected at the selective reflective mirror and outputs a second signal, and a signal processing unit for measuring the distance to the target point in the target area by selecting one of the first signal and the second signal.

Distance measuring apparatus

The present invention relates to a device for forming a visible image which can draw a two-dimensional or a three-dimensional visible image without having a scanning locus of a laser beam recognized. The device for forming a visible image of the present invention is comprised of a laser source irradiating a laser beam in an invisible region, a scanning means for scanning said laser beam two-dimensionally or three-dimensionally, a condensing optical system for condensing said laser beam to a drawing scheduled point in the air for plasma emission of a gas, and a controlling means for controlling oscillation timing of said laser source and scanning timing of said scanning means so as to generate said plasma emission at said drawing scheduled point in a time series and for drawing a visible image as a residual image phenomenon of the plasma emission.

Device for forming visible image in air

An optical fiber cable, comprising a cable main unit with an optical fiber covered by a sheath and terminal units mounted on end portions of the cable main unit, wherein each of the terminal units has a transparent cover member with a refractive index approximately equal to the optical fiber, the cover member of at least one of the terminal units and the optical fiber are welded under such condition that the cover member is brought closer to or into contact with the optical fiber, and the cover member and the optical fiber are integrated with each other.

Optical fiber cable

A solid-state laser device, comprising two or more resonators for outputting laser beams on a same axis, a first light emitter and a second light emitter for entering excitation light to each of the resonators, a photodetector for monitoring which monitors the outputted laser beams, and a control unit for performing constant output control of at least one of the first light emitter and the second light emitter based on a signal from the photodetector for monitoring.

Solid-state laser device

A solid-state laser device, which comprises a first resonator for projecting a first laser beam and a second resonator for projecting a second laser beam, wherein the first resonator and the second resonator commonly share a part of an optical axis and an output mirror, and which comprises a first light emitting unit for the first resonator, a second light emitting unit for the second resonator, a monitoring means for splitting and monitoring a part of the first laser beam and for splitting and monitoring a part of the second laser beam among the laser beams projected from the output mirror, and a control unit for controlling at least one of the first light emitting unit and the second light emitting unit based on a detection result from the monitoring means.

Solid-state laser device using two resonators on the same axis and dual monitors

A laser device, comprising a laser beam emitter having an optical resonator, wherein the optical resonator has a resonator and a reflection mirror, and at least one of a length of the resonator or a curvature of the reflection mirror is determined so as to satisfy condition that a parameter Mof beam quality of a projected laser beam is within a range of 8&#x2266;M&#x2266;22, where M=&#x3c0;W&#xb7;&#x398;/&#x3bb; (W is a beam waist of a laser beam; &#x398; is a spreading angle; and &#x3bb; is a wavelength of the laser beam).

Growing community of inventors

Tokyo-to, Japan

Masayuki Momiuchi