Optical cavity structure of LED lighting apparatus
The present invention provides an optical cavity structure of an LED lighting apparatus comprising a base, a light reflector, LED module, and a light cover. The light reflector can be integrally formed with the base or an independent unit. An optical cavity is constructed by the base, light reflector and light cover altogether, and the LED module is attached to the base received within the optical cavity. The light reflector can be symmetrical with inclined angle or as a conical shape provided on two sides opposing to the direction of light from the LED module. The inner surface of the light reflector is a light reflecting surface. The light cover is attached to the light reflector. As a result, the light from the LED is gathered and reflected by the light reflecting surface via the angle and shape of the light reflector to achieve an enhanced luminance range and illumination.
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Mei-Ling Chin-Chia
Yang Chang