公开(公告)号：US09795012B2

公开(公告)日：2017-10-17

申请号：US15336058

申请日：2016-10-27

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Ryuhei Hayashi ,  Yuichi Ejiri

IPC: G05B15/00 ,  H05B37/02

CPC classification number: H05B37/0254 ,  G05B15/00 ,  G05B2219/31 ,  G05B2219/31308 ,  H05B37/0245

Abstract: When a controller receives an external instruction for initial setting, the controller gives image sensors an instruction regarding lighting. When an image sensor among the image sensors receives the instruction regarding lighting from the controller, the image sensor performs lighting control in accordance with the instruction regarding lighting on a luminaire among luminaires to determine (i) a relative position of the luminaire relative to the image sensor and (ii) a relative position of the image sensor relative to a different image sensor among the image sensors. The controller determines positions of the image sensors and positions of the luminaires by collecting the relative positions of the image sensors and the relative positions of the luminaires determined by the image sensors.

公开(公告)号：US20180160495A1

公开(公告)日：2018-06-07

申请号：US15829888

申请日：2017-12-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinichi MURAKAMI ,  Kazuhiro Kumada ,  Ryuhei Hayashi

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  F21S8/00 ,  F21S8/026 ,  F21V23/001 ,  F21W2131/406 ,  F21Y2115/10 ,  F21Y2115/20 ,  H05B33/0812 ,  H05B33/0815

Abstract: A lighting device includes: a variable voltage source; a transistor which controls a current flowing through a light-emitting element; and a control circuit which causes the transistor to pass a current corresponding to a received instruction for a dimming level through the light-emitting element. When the received instruction instructs at least a predetermined dimming Level, the control circuit causes a voltage drop in the transistor to become a first voltage by controlling the variable voltage source, and when the received instruction instructs a dimming level less than the predetermined dimming level, the control circuit causes the voltage drop to become a second voltage higher than the first voltage, by controlling the variable voltage source.

公开(公告)号：US09992837B1

公开(公告)日：2018-06-05

申请号：US15829888

申请日：2017-12-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinichi Murakami ,  Kazuhiro Kumada ,  Ryuhei Hayashi

IPC: H05B33/08 ,  F21V23/00 ,  F21Y115/10 ,  F21W131/406 ,  F21S8/02

CPC classification number: H05B33/0845 ,  F21S8/00 ,  F21S8/026 ,  F21V23/001 ,  F21W2131/406 ,  F21Y2115/10 ,  F21Y2115/20 ,  H05B33/0812 ,  H05B33/0815

Abstract: A lighting device includes: a variable voltage source; a transistor which controls a current flowing through a light-emitting element; and a control circuit which causes the transistor to pass a current corresponding to a received instruction for a dimming level through the light-emitting element. When the received instruction instructs at least a predetermined dimming level, the control circuit causes a voltage drop in the transistor to become a first voltage by controlling the variable voltage source, and when the received instruction instructs a dimming level less than the predetermined dimming level, the control circuit causes the voltage drop to become a second voltage higher than the first voltage, by controlling the variable voltage source.