subject: Dual Led Board For Ad [print this page] Circuit boards for lighting systems have identical LED writing board landing zones printed on the board. Each zone includes at least two sets of LED contact pads. One pad set is configured to mate with contacts of an LED of a first structural type, e.g. from a first product line or manufacturer. The other pad set is configured to mate with contacts of an LED of a second type, e.g. from a different product line or manufacturer. The layout may enable an easy system re-design, e.g. to shift from one type of LED to another. Alternatively, the layout may enable one system to use LEDs of the two different types in a single LED set or array. Exemplary systems disclosed herein include an element for mixing light produced by LEDs mounted to the landing zones, such as an optical integrating cavity.
A printed circuit board for a LED writing board light fixture is designed to match the configuration of one type of LEDs that will be mounted/connected on the board. For example, a board designed for a fixture that will utilize LEDs of a type from onemanufacturer (of one color or of a number of different colors) would need to be redesigned in order for the fixture to utilize a different type of LED writing board, such as from a different product line or as might be supplied by a different manufacturer. Also, itis difficult to include structurally different types of LEDs in a single LED set, particularly if the LEDs will be close to each other, because of the need to design different arrangements of contact pads and/or heat sinks on the board to accept each ofthe different types of LEDs.
The detailed description below discloses examples of printed circuit boards for use in lighting systems or the like. Such a board has a number of identical LED writing board landing zones printed on the board. Each LED landing zone includes two sets of LEDcontact pads. One of the sets of contact pads is configured to mate with a first contact configuration for an LED of a first structural type. The other set of contact pads is configured to mate with a second contact configuration for an LED of a secondstructural type different from the first structural type, that is to say, of a type having a second contact configuration that is different from the first contact configuration.
