| 摘要 |
An enlarged surface LED lighting device having an interior reflector disposed and configured to reflect the light emitted by a LED element to increase the divergence of the light and form an interior reflected light. The interior reflector is typically a surface of revolution about the pattern axis configured to reflect and bend the light away from the axis of the spatial radiation pattern of the emitted light. The interior reflector is also formed to Increase the transfer of heat away from the LED element. The interior reflector is usually disposed in close proximity to the LED element to maximize the percentage of emitted light it redirects. The lighting device additionally includes an exterior reflector also normally a surface of revolution about the pattern axis. The exterior reflector is disposed and configured to reflect the interior reflected light previously reflected by the interior reflector to form an exterior reflected light and usually to decrease the divergence of -the interior reflected light about the pattern axis. The emerging light as a result of the interior and exterior reflectors emerges from the lighting device from a large lighted area.
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