Linear lighting spreads illumination along an elongated assembly instead of concentrating output within a compact round or square fixture. This format can match machinery, workstations, aisle geometry, cabinets, enclosures, and other structures where the illuminated area is longer than it is wide.
Lighting Architecture
Building a Linear LED Assembly
A typical linear architecture can combine one or more LED circuit boards with a metal housing, thermal interface, diffuser or clear window, end caps, electrical connectors, driver electronics, and mounting features.
Component arrangement should support both light distribution and heat transfer along the length of the fixture.
Aluminum Profiles
Extruded Housings and Heat Sinks
Aluminum extrusions can create long structural profiles with repeated cross-sectional features such as channels, fins, mounting slots, internal ledges, and diffuser retention geometry.
This can make extrusion useful for linear lighting where the housing must extend over a significant length while also supporting LEDs, optics, thermal management, and mounting.
Aluminum Lighting Housings →Optical Cover
Diffusers and Clear Windows
A diffuser can reduce the appearance of individual LED points and create a more continuous luminous surface. A clearer optical window may preserve more directional output where the LED optics already provide the desired beam.
The cover also functions mechanically by protecting the internal LED assembly from the surrounding environment.
Reflectors & Diffusers →LED Board Layout
Output Along the Fixture Length
LED spacing influences brightness distribution along the line. Closely spaced emitters can create a visually continuous source, while larger spacing may remain visible through a clear or lightly diffused cover.
Electrical segmentation, board length, connector placement, driver architecture, and thermal spreading should be considered together.
Thermal Path
Using the Housing to Spread Heat
A metal linear housing can perform multiple functions at the same time: structure, mounting, component protection, optical support, and thermal spreading.
Contact between the LED board and housing should be designed so heat can move from the board into the larger aluminum structure where appropriate.
Thermal Management →Mechanical Installation
Mounting Linear Fixtures
Long fixtures require stable mounting across their length. Brackets, clips, slots, machine frames, rails, cabinets, or purpose-built supports can be used depending on the installation.
Thermal expansion, cable entry, fixture removal, end clearance, and access to fasteners should be considered before the profile length and mounting locations are finalized.
Applications
Where Linear Lighting Fits
Machine Interiors
Long fixtures can illuminate a broad machine work envelope from one edge.
Workstations
Linear sources can provide continuous illumination across production benches.
Inspection Systems
Bar-style illumination can provide directional lighting for cameras.
Equipment Cabinets
Compact profiles can illuminate service and electrical areas.
Design Review