Abstract: An illumination system includes an LED-based light source that is elongated along a given direction and has a target length. The LED-based light source includes two or more boards disposed along the given direction, each of the boards corresponding to a stockkeeping unit (SKU) from among a finite number of SKUs. Here, each SKU corresponds to a combination of a pre-specified board length and an LED circuit to be powered using a constant current method. As a value of the target length of the LED-based light source is smaller than a sum of the lengths of the constitutive boards of the LED-based light source, a shortest board from among the constitutive boards is offset, in a direction orthogonal to the given direction, by a finite offset relative to the remaining ones of the constitutive boards.

Abstract: An illumination system includes a substrate; a one-dimensional (1D) array of light emitting diodes (LEDs) distributed on the substrate along a first direction; a 1D array of lenses optically coupled in one-to-one correspondence with the 1D array of LEDs; and a 1D array of light shields optically coupled in one-to-one correspondence with the 1D array of lenses, each light shield of the 1D array of light shields having an input aperture and an output aperture, the light shield comprising a lateral surface extending between the input aperture and the output aperture in a second direction substantially orthogonal to the first direction.

Abstract: An illumination system includes a housing elongated along a first direction, a substrate supported inside the housing and extending along the first direction, a plurality of light emitting diodes (LEDs) distributed along and supported by the substrate inside the housing; and a co-formed optical element extending along the first direction, the co-formed optical element including an optical coupler made from a first material and a lens made from a second, different material, where the optical coupler and the lens are integrally co-formed as a single piece such that the lens joins seamlessly with the optical coupler.