Invention Grant
US08979291B2 Lighting devices including transparent organic light emitting device light panels and having independent control of direct to indirect light 有权
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

Lighting devices including transparent organic light emitting device light panels and having independent control of direct to indirect light
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.
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