A method for using LEDs to supplement natural light in a greenhouse and a support structure for attaching LEDs in a greenhouse so that the plants receive substantially even light distribution from the LEDs and minimal natural light is blocked by the lighting system. A narrow attachment rail is used to suspend a strip of LEDs from the frame structure of the greenhouse.

 
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< Multifunctional optical assembly

< Light guide apparatus for enhancing light source utilization efficiency

> Backlight module and lens thereof

> Light source device with optical guiding member and planar light source device employing same
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