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公开(公告)号：US20210063153A1
公开(公告)日：2021-03-04
申请号：US16985778
申请日：2020-08-05
Applicant: TOPCON CORPORATION
Inventor： Yosuke OKUDAIRA , Akinobu SUGIURA , Yasutoshi AOKI
Abstract: Provided is a surveying instrument configured so that the optical axis of a guide light irradiation unit that irradiates guide light for guiding a survey operator and the optical axis of a lens barrel portion of a distance-measuring optical system become parallel to each other on a horizontal plane. The guide light irradiation unit is not disposed above the lens barrel portion that substantially matches a collimation direction is horizontally shifted with respect to the lens barrel portion. The horizontal shift distance D is configured so that a horizontal distance D between the optical axis of guide light and the optical axis of the lens barrel portion satisfies tan(α/2)×Cmin>D provided that α is an irradiation angle of the guide light in the horizontal direction, and Cmin is a shortest use distance of the surveying instrument.
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公开(公告)号：US20230314135A1
公开(公告)日：2023-10-05
申请号：US18125609
申请日：2023-03-23
Applicant: TOPCON CORPORATION
Inventor： Masaho KIKUCHI , Akinobu SUGIURA
CPC classification number: G01C15/006 , G01C5/00
Abstract: A surveying instrument capable of irradiating a spotlight as visible light for centering toward a position below a vertical axis of a surveying instrument main body is configured such that that an irradiation shape of the spotlight is a toric shape. When visible light for centering which passes through a center point of the surveying instrument and is projected on a position right below the surveying instrument is projected in a toric shape having a hole opened at a center like a donut shape, both of an inner circle and an outer circle can be recognized, so that many guides are provided, and it is easier for a worker to align the toric shape with the target point than a point shape, so that the burden of a centering work on the worker is reduced.
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公开(公告)号：US20200309351A1
公开(公告)日：2020-10-01
申请号：US16817098
申请日：2020-03-12
Applicant: TOPCON CORPORATION
Inventor： Akinobu SUGIURA
Abstract: A guide light irradiation device to irradiate guide light to indicate a direction to a survey operator, includes a plurality of irradiators configured to each irradiate guide light differing in pattern between the left and the right of an irradiation direction as a center, the plurality of irradiators are juxtaposed in a left-right direction, and irradiation units of the plurality of irradiators are disposed so that the irradiation units match in the horizontal direction, and optical axes of the plurality of irradiators make a predetermined angle with each other in the vertical direction. Synthetic light of the respective guide lights has brightness obtained by summing brightnesses of the light sources of the respective irradiators, and has a fan shape extending in the vertical direction. A distance at which the light is visually recognized is long, and the guide light is easily found even at a location with level differences.
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Patent Agency Ranking
公开(公告)号：US20200309350A1
公开(公告)日：2020-10-01
申请号：US16817060
申请日：2020-03-12
Applicant: TOPCON CORPORATION
Inventor： Akinobu SUGIURA
Abstract: A guide light irradiation device to irradiate guide light to indicate a direction to a survey operator, includes a plurality of irradiators configured to each irradiate guide light differing in pattern between the left and the right of an irradiation direction as a center, the plurality of irradiators are juxtaposed in the up-down direction, and are disposed so that irradiation directions of the respective irradiators match in the horizontal direction, and make a predetermined angle with each other in the vertical direction. Synthetic light of guide lights irradiated from the respective irradiators has brightness as a sum of brightnesses of light sources of the respective irradiators, and has a fan shape extending in the vertical direction. A distance from which light is visually recognized is long, and guide light is easily found even at a location with level differences.
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公开(公告)号：US20170205233A1
公开(公告)日：2017-07-20
申请号：US15407804
申请日：2017-01-17
Applicant: TOPCON CORPORATION
Inventor： Homare MOMIYAMA , Akinobu SUGIURA , Hideyuki MATSUMOTO
CPC classification number: G01C9/20 , G01C9/06 , G01C2009/066 , G01F23/14
Abstract: A method of designing a container of a liquid reflection inclination sensor includes a liquid surface calculating step (S1) that calculates a shape of a liquid surface of a liquid in a horizontal direction “x” and a vertical direction “y” by utilizing the Young-Laplace formula and the hydrostatic pressure formula, the liquid surface formed on a plate extending vertically and infinitely with respect to a horizontal part of the liquid surface, an optical simulation step (S2) that obtains a light receiving pattern by reflecting a dark field pattern (4′) irradiated from an imaginary light source (2′) on an imaginary mirror plane (9a′) having the shape of the liquid surface, and a container adjusting step (S3-S4) that adjusts a shape of a cylindrical container (10) for enclosing the liquid by judging whether image accuracy of the light receiving pattern satisfies demanded sensor accuracy.
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公开(公告)号：US20240110784A1
公开(公告)日：2024-04-04
申请号：US18371090
申请日：2023-09-21
Applicant: TOPCON CORPORATION
Inventor： Akinobu SUGIURA , Nobuyuki NISHITA
CPC classification number: G01C15/006 , G01S17/08 , H04N23/71 , H04N23/75
Abstract: A surveying instrument having a tracking function with a measure against sunlight is provided which includes a tracking unit and a distance-measuring unit, a driving unit, an imaging device, a filter switching device configured to make switching so that either of two filters is selectively disposed on an optical axis of the imaging device, and a control unit configured to, when the imaging device acquires an image including tracking guide light, analyze the image and operate an arrival direction of the tracking guide light, and control the driving unit so that a collimation axis is directed toward the arrival direction of the tracking guide light, wherein one filter of the two filters is a tracking guide light filter configured to transmit only wavelengths in a predetermined range centered on a wavelength of the tracking guide light.
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公开(公告)号：US20180245917A1
公开(公告)日：2018-08-30
申请号：US15878830
申请日：2018-01-24
Applicant: TOPCON CORPORATION
Inventor： Akinobu SUGIURA , Masahiro OHISHI
CPC classification number: G01C15/004 , G01C3/08 , G01C15/002 , G01S7/4812 , G01S17/08
Abstract: Provided is a surveying instrument including a light emitting section for emitting distance measuring light having an intensity distribution in which an intensity is high at the center and it became lower as approaching the periphery, a light receiving section for receiving the distance measuring light via a measurement object; and a distance-measurement optical system for guiding the light to the light receiving section via the measurement object. The surveying instrument performs a prism-mode and non-prism-mode measurements. The optical system includes an aperture diaphragm arranged in a distance-measurement optical path during the prism-mode-measurement. An opening of the aperture diaphragm has widths of greater than 0 and not greater than 0.5 times the full width at half maximum of the intensity distribution in a cross-section of non-prism-distance-measurement beam in the horizontal and vertical direction.
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公开(公告)号：US20170045748A1
公开(公告)日：2017-02-16
申请号：US15232231
申请日：2016-08-09
Applicant: TOPCON CORPORATION
Inventor： Akinobu SUGIURA
CPC classification number: G02B27/141 , G01C1/02 , G01C15/002 , G01S3/786 , G01S7/4811 , G01S17/08 , G02B5/22 , G02B27/145
Abstract: In an automatic survey instrument that divides reflected light from a target into collimation light, range-finding light, and tracking light, a configuration of an optical absorption filter for visible light absorption to be used for SN ratio improvement is simplified, and deterioration in automatic tracking performance due to a defect inside the optical absorption filter is suppressed. Between two prisms (41, 43) defining a second reflecting surface (45) of a dichroic prism (40) through which reflected light from a target enters, an optical absorption filter (46) that absorbs a wavelength band of visible light is inserted, and the second reflecting surface (45) is formed at a border between a rear surface of the optical absorption filter (46) with respect to a light propagation direction and a surface of the prism (43) on the rear side of the optical absorption filter in the light propagation direction.
Abstract translation: 在将来自目标的反射光分为准直光，测距光和跟踪光的自动测量仪器中，简化了用于SN比改善的用于可见光吸收的光吸收滤光器的结构，并且自动降低 由于光吸收滤波器内的缺陷引起的跟踪性能被抑制。 在限定来自目标物的反射光进入的二向色棱镜（40）的第二反射面（45）的两个棱镜（41,43）之间插入吸收可见光的波长带的光吸收滤光器（46） 并且所述第二反射面（45）形成在所述光吸收滤光器（46）的背面之间相对于光传播方向的边界与所述光吸收滤光器的后侧的所述棱镜（43）的表面之间的边界 在光传播方向。
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