Abstract: An illuminating device can comprise two substrates each having two surfaces, one of each can be configured to mount solid-state lighting devices wherein the two substrates are separated by a defined gap. The two substrates are electrically and mechanically connected and can support or be supported with an enclosure such as an optic. This configuration provides thermal decoupling and uniform illumination when assembled as per the embodiments explained.
Abstract: A downlight apparatus includes a heat dissipation unit, a light source, a driver module, a light guiding module, a light guiding unit and a protruding portion. The protruding portion has a top portion and an enlarging portion. The top portion is attached to the heat dissipation unit and has a smaller diameter than the enlarging portion.