Invention Grant
- Patent Title: Control device having buttons with multiple-level backlighting
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Application No.: US15952869Application Date: 2018-04-13
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Publication No.: US10206260B2Publication Date: 2019-02-12
- Inventor: Matthew Philip McDonald , Daniel L. Twaddell , Jason C. Killo
- Applicant: Lutron Electronics Co., Inc.
- Applicant Address: US PA Coopersburg
- Assignee: LUTRON ELECTRONICS CO., INC.
- Current Assignee: LUTRON ELECTRONICS CO., INC.
- Current Assignee Address: US PA Coopersburg
- Agency: Condo Roccia Koptiw LLP
- Main IPC: H01H13/70
- IPC: H01H13/70 ; H03K17/96 ; H05B33/08 ; H05B37/02

Abstract:
A control device may have a plurality of buttons that may be backlit to multiple levels, such as first, second, and third adjacent buttons positioned in order, and first, second, and third LEDs positioned to illuminate a respective button. The control device may be configured to illuminate the first LED to a first LED illumination intensity to illuminate the respective button to a first surface illumination intensity; illuminate the third LED to a second LED illumination intensity to illuminate the respective button to a second surface illumination intensity; and illuminate the second LED to a third LED illumination intensity to illuminate the respective button to the second surface illumination intensity. The third LED illumination intensity may be less than the second LED illumination intensity, which may be less than the first LED illumination intensity, and the second surface illumination intensity may be less than the first surface illumination intensity.
Public/Granted literature
- US20180235050A1 CONTROL DEVICE HAVING BUTTONS WITH MULTIPLE-LEVEL BACKLIGHTING Public/Granted day:2018-08-16
Information query