ILLUMINATION CONTROL SYSTEM

• US 20150097490A1
• Filed: 08/25/2014
• Published: 04/09/2015
• Est. Priority Date: 09/27/2013
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: OKUYA, Teruhisa, UEGAKI, Yuriko, NAKAMURA, Toru
• Granted Patent: US 9,351,376 B2
• Time in Patent Office: Days
• US Class Current: 315/158
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: H05B 47/125 by using cameras
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

An illumination control system includes a signal detection unit for detecting a signal changed depending on an eye state of a person, an opening/closing determination unit for determining an opening/closing state of an eye of the person based on the detected signal, and a sight line detection unit for detecting a person'"'"'s sight line direction with respect to an illumination device based on the detected signal. The illumination control system further includes a control unit for controlling the illumination device to reduce an illuminance when the opening/closing determination unit determines that the eye of the person is in a closed eye state, and to change an illuminance and a light color based on the sight line direction detected by the sight line detection unit when the opening/closing determination unit determines that the eye of the person is in an open eye state.

Claims

1. An illumination control system for controlling an illumination device, comprising:

a signal detection unit configured to detect a signal changed depending on an eye state of a person in a space where the illumination device is installed;

an opening/closing determination unit configured to determine an opening/closing state of an eye of the person based on the signal detected by the signal detection unit;

a sight line detection unit configured to detect a person'"'"'s sight line direction with respect to the illumination device based on the signal detected by the signal detection unit; and

a control unit configured to control the illumination device to reduce an illuminance when the opening/closing determination unit determines that the eye of the person is in a closed eye state, and to control the illumination device to change an illuminance and a light color based on the sight line direction detected by the sight line detection unit when the opening/closing determination unit determines that the eye of the person is in an open eye state.

2. The system of claim 1, wherein the signal detection unit includes at least one of a camera, an eye potential measuring instrument and a brain activity detector.