Patents Assigned to DOLPHIN CO., LTD.
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Patent number: 12551082Abstract: A tumbler cleaner according to an embodiment of the present invention comprises a housing; a door coupled to a front opening of the housing; a bracket attached to an inner side of the door; a cleaning unit coupled to the bracket and cleaning each of a cup and a lid of a tumbler; and one or more nozzles disposed in at least one of an upper portion and lower portion of the housing to spray washing water and rinsing water toward the cleaning unit.Type: GrantFiled: April 26, 2024Date of Patent: February 17, 2026Assignee: DOLPHIN CO., LTD.Inventors: Tae Hun Kim, Tae Jun Kim
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Object detecting apparatus, object detecting method, and design method of object detecting apparatus
Patent number: 11275157Abstract: An object detecting apparatus is provided with: a collimating assembly that converts laser light emitted by plural light-emitting points to a laser beam having a divergence angle in an arrangement direction of plural light-emitting points; and an optical assembly that projects the laser beam outward along an optical axis and guides an incident light toward a light-receiving element along the optical axis. The optical assembly is provided with a collective optics that forms an image of the incident light on a focal plane and an aperture located on the focal plane. The aperture satisfies ???, where ? is the divergence angle along the arrangement direction of plural light-emitting points, D is a size of a light passing region of the aperture in a direction corresponding to the divergence angle, d is an effective focal distance of the collective optics, and ?=arctan(D/d).Type: GrantFiled: March 3, 2020Date of Patent: March 15, 2022Assignee: DOLPHIN CO., LTD.Inventor: Zhihui Duan -
Patent number: 10878984Abstract: An actuator includes a column shaped magnet having an S-pole and an N-pole thereof positioned opposite to each other across a central axis of the magnet. A driving coil is disposed near the magnet, the driving coil comprising a first portion and a second portion positioned opposite to each other across the magnet, the first portion and the second portion are generally parallel to the central axis, current flowing in opposite directions in the first portion and the second portion when powered on. A ferromagnetic material is disposed outside the driving coil along the central axis, distance from the central axis to the ferromagnetic material varying with the direction from the central axis. A driving circuitry is configured to apply a drive signal, the drive signal having a periodically varying voltage or current. The magnet performs reciprocating rotation in accordance with the drive signal applied by the driving circuitry.Type: GrantFiled: December 23, 2019Date of Patent: December 29, 2020Assignee: DOLPHIN CO., LTD.Inventor: Zhihui Duan
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Patent number: 10852431Abstract: An actuator comprises: a torsion spring fixed to a top yoke as a support member; a permanent magnet coupled to the torsion spring where the permanent magnet is placed with an N-pole and an S-pole thereof across a rotational axis of the torsion spring; a drive circuitry configured to apply a drive signal with periodically varying voltage or current; and a mirror unit comprising a first mirror and second mirrors, the first mirror being near a center of the torsion spring, and the second mirrors being around the first mirror and parallel to the first mirror. A plane including a reflecting surface of the second mirrors is closer to the rotation axis of the torsion spring than a plane including a reflecting surface of the first mirror, and the mirror unit reciprocates in accordance with application of the drive signal.Type: GrantFiled: December 23, 2019Date of Patent: December 1, 2020Assignee: DOLPHIN CO., LTD.Inventor: Zhihui Duan
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Patent number: 10620314Abstract: An object detecting apparatus is provided with: a laser diode that projects a laser beam; a torsion spring coupled with a support member; a mirror coupled to a first side of the torsion spring and reflecting the laser beam; a permanent magnet coupled to a second side of the torsion spring across a rotational axis of the torsion spring; a driving coil; and a magnetic substance assembly surrounding the driving coil. The mirror reciprocates corresponding to a driving signal applied to the driving coil. The object detecting apparatus is further provided with a speed detecting circuitry configured to detect a moving speed of the mirror; and a pulse controller configured to control a pulse interval of the laser beam projected by the laser diode based on the moving speed detected by the speed detecting circuitry.Type: GrantFiled: December 14, 2018Date of Patent: April 14, 2020Assignee: DOLPHIN CO., LTD.Inventor: Zhihui Duan
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Object detecting apparatus, object detecting method, and design method of object detecting apparatus
Patent number: 10324184Abstract: An object detecting apparatus is provided with: a lens assembly that converts laser light emitted by plural light-emitting points to a laser beam having a divergence angle in an arrangement direction of plural light-emitting points; and an optical assembly that projects the laser beam outward along an optical axis and guides an incident light toward a light-receiving element along the optical axis. The optical assembly is provided with a collective lens that forms an image of the incident light on a focal plane and an aperture located on the focal plane. The aperture satisfies ???, where ? is the divergence angle along the arrangement direction of plural light-emitting points, D is a size of a light passing region of the aperture in a direction corresponding to the divergence angle, d is a distance between the collective lens and the aperture, and ?=arctan(D/d).Type: GrantFiled: December 14, 2018Date of Patent: June 18, 2019Assignee: DOLPHIN CO., LTD.Inventor: Zhihui Duan