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公开(公告)号：US09603227B2
公开(公告)日：2017-03-21
申请号：US15177463
申请日：2016-06-09
Inventor： Takaaki Gyoten , Shinji Miyoshi
CPC classification number: H05B33/0824
Abstract: The semiconductor light source driving apparatus includes light source modules, a current control element, a second current detection element, a DC power supply, and a controller. The light source modules each include the following components connected in parallel: a semiconductor light source; a first constant-voltage diode; a series circuit of a first current detection element and a second constant-voltage diode with a lower breakdown voltage than the first constant-voltage diode; and a switching element. The controller controls the DC power supply based on a detection output of the second current detection element. After the first current detection element generates a output in response to an open fault in any of the semiconductor light sources, and then the current control element is turned off, the controller turns on the switching element of the light source module with the open fault, thereby allowing the current control element to be controlled.
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12.发明授权公开(公告)号：US10211828B2
公开(公告)日：2019-02-19
申请号：US15671808
申请日：2017-08-08
Inventor： Takaaki Gyoten
IPC: H03K17/567
Abstract: A driving device includes: a driving circuit operating with a single power supply in accordance with a driving signal; a first parallel circuit formed of a first capacitor and a first zener diode connected together in parallel, and having a first end connected to an output terminal of the driving circuit; a series circuit connected between a second end of the first parallel circuit and a ground of the driving circuit, and formed of a diode and a second parallel circuit (of a second capacitor and a second zener diode) connected to each other in series; and a resistor is connected between the second end of the first parallel circuit and the ground of the driving circuit. A voltage across the resistor is used as an output voltage for driving the insulated gate semiconductor element. A voltage across the first capacitor is superimposed negative-wise on the output voltage.
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Patent Agency Ranking
公开(公告)号：US10168603B2
公开(公告)日：2019-01-01
申请号：US15192751
申请日：2016-06-24
Inventor： Takaaki Gyoten , Nobuyuki Kondo , Ken Mashitani
Abstract: An optical member driving apparatus includes an optical member for changing an optical path, a plurality of actuators each having a movable member which is controlled to move in one direction, a plurality of connecting members which connect edge portions of the optical member positioned on two axes orthogonal to each other and the movable members of the plurality of actuators, respectively, a position detector for detecting a moving amount of the movable member of each actuator and outputting a detection signal indicating the moving amount, and a controller for controlling movement of the movable member of each actuator based on the detection signal from the position detector so as to keep an intersection point of the two axes at constant position.
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公开(公告)号：US09823466B2
公开(公告)日：2017-11-21
申请号：US15179975
申请日：2016-06-11
Inventor： Takaaki Abe , Masutaka Inoue , Takaaki Gyoten , Ryoji Okubo , Akiyoshi Yamaguchi , Kazuma Tani
CPC classification number: G02B26/0875 , G03B21/008 , G03B21/14 , G03B21/204 , H04N9/3114 , H04N9/317
Abstract: The optical path changing device of the present disclosure includes an optical member having a parallel plate face for changing an optical path, and first, second, and third actuators. The first, the second, and the third actuators are connected with the optical member at first, second, and third vertices of a triangle imaginarily drawn on a plane parallel to the parallel plate face of the optical member. The first, the second, and the third actuators drive the optical member forward and backward in a normal direction of the parallel plate face at the first, the second, and the third vertices serving as points of load. The optical member has a center of gravity within the triangle when seen from the normal direction.
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公开(公告)号：US09703185B2
公开(公告)日：2017-07-11
申请号：US15265089
申请日：2016-09-14
Inventor： Takaaki Gyoten
CPC classification number: G03B21/2053 , G03B21/204 , H04N9/3155 , H04N9/3164 , H04N9/3182 , H05B33/0809 , H05B37/0209
Abstract: Prior to a rising timing of a switching signal, a second FET is turned ON for a predetermined period according to a voltage switching signal. This allows a sum of a supply voltage of a first switching power source and a supply voltage of a second switching power source to be applied to a series circuit of a semiconductor light source, a drain-source of a first FET, and a current detecting resistor for a predetermined period before and after the rising timing of the switching signal.
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公开(公告)号：US09575397B2
公开(公告)日：2017-02-21
申请号：US14657501
申请日：2015-03-13
Inventor： Takaaki Gyoten
CPC classification number: G03B21/142 , G02B26/0833 , G03B2205/0061
Abstract: An optical member driving device of the present disclosure includes an optical member for changing an optical path, the optical member having a parallel flat plate shape; a driving mechanism having a movable portion controlled to move in a direction orthogonal to a surface of the optical member by a drive signal, the driving mechanisms being disposed outside the optical member; a connecting member rotatably connecting an end of the optical member and the movable portion of the driving mechanism on two axes orthogonal to each other at a surface center of the optical member; a support portion disposed between the end of the optical member and the movable portion of the driving mechanism, the support portion rotatably pivoting the connecting member; and a controller configured to control the movable portion of the driving mechanism.
Abstract translation: 本公开的光学构件驱动装置包括用于改变光路的光学构件，所述光学构件具有平行的平板形状; 驱动机构，其具有被控制为通过驱动信号在与所述光学构件的表面正交的方向上移动的可动部，所述驱动机构设置在所述光学构件的外部; 连接构件，其在所述光学构件的表面中心处以彼此正交的两个轴线可旋转地连接所述光学构件的端部和所述驱动机构的可动部; 设置在所述光学构件的端部和所述驱动机构的可动部之间的支撑部，所述支撑部可旋转地枢转所述连接构件; 以及控制器，被配置为控制所述驱动机构的可动部。
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公开(公告)号：US09253431B2
公开(公告)日：2016-02-02
申请号：US14645032
申请日：2015-03-11
Inventor： Kazuma Tani , Ken Mashitani , Takaaki Gyoten
CPC classification number: H04N5/7475 , H04N5/74 , H04N9/3144 , H04N9/3188
Abstract: A projection video display apparatus includes: a converter that converts an input video signal having a first number of pixels and a first frame rate into a conversion video signal having a second number of pixels and a second frame rate, the second number of pixels being smaller than the first number of pixels, and the second frame rate being an n-th multiple (n is an integer of 2 or greater) of the first frame rate; an optical element that displaces an optical axis of the video light beam; an optical element driving unit that drives the optical element at a frequency F being a natural-number multiple of the first frame rate; and a rotating body that rotates at a rotation speed R. The rotation speed R is set so as to become a value within a predetermined range corresponding to the frequency F.
Abstract translation: 投影视频显示装置包括：转换器，其将具有第一数量的像素和第一帧速率的输入视频信号转换为具有第二数量的像素和第二帧率的转换视频信号，第二数量的像素更小 并且第二帧速率是第一帧速率的第n个倍数（n是2或更大的整数）; 使视频光束的光轴位移的光学元件; 光学元件驱动单元，其以频率F为第一帧率的自然数倍的速率驱动光学元件; 以及以旋转速度R旋转的旋转体。旋转速度R被设定为成为与频率F对应的规定范围内的值。
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