Invention Grant
- Patent Title: Lighting devices including transparent organic light emitting device light panels and having independent control of direct to indirect light
- Patent Title (中): 照明装置包括透明有机发光装置灯板,并具有独立控制的直接间接光
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Application No.: US13888844Application Date: 2013-05-07
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Publication No.: US08979291B2Publication Date: 2015-03-17
- Inventor: Michael Hack , Ruiqing Ma , Duncan Jackson , Eoin Billings
- Applicant: Universal Display Corporation
- Applicant Address: US NJ Ewing
- Assignee: Universal Display Corporation
- Current Assignee: Universal Display Corporation
- Current Assignee Address: US NJ Ewing
- Agency: Morris & Kamlay LLP
- Main IPC: G09F13/04
- IPC: G09F13/04 ; F21V14/00

Abstract:
A lighting device for emitting direct light and indirect light, includes a first transparent light panel comprising at least one organic light emitting device, the first transparent light panel emitting direct light and indirect light during operation thereof; and at least a second transparent light panel comprising at least one organic light emitting device, the second transparent light panel emitting direct light and indirect light during operation thereof, the second transparent light panel being positioned so that at least a portion of indirect light emitted from the first transparent light is transmitted through the second transparent light panel and at least a portion of direct light emitted from the second transparent light panel is transmitted through the first transparent light panel, wherein the first transparent light panel is controllable independently from the second transparent light panel to control a ratio of direct light to indirect light emitted by the lighting device. Other aspects are described and claimed.
Public/Granted literature
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