Photonics Dictionary

chip-on-board lights

Chip-on-board (COB) lights refer to a type of LED lighting technology where multiple LED chips are directly mounted onto a substrate, typically a printed circuit board (PCB), without the need for individual LED packages or housings. In COB lighting, the LED chips are closely arranged and encapsulated within a single phosphor layer or resin, creating a compact and integrated light source.

Key characteristics and features of chip-on-board lights include:

High luminous flux: COB lights can achieve high luminous flux output due to the densely packed arrangement of LED chips. This allows for efficient and bright illumination in a compact form factor.

Improved thermal management: The close proximity of LED chips in COB lighting enables better thermal management, as the heat generated by the LEDs can be efficiently dissipated through the substrate or heat sink. This helps to maintain optimal operating temperatures and prolong the lifespan of the LEDs.

Uniform light output: COB lights produce uniform illumination with minimal glare or hot spots, thanks to the seamless integration of multiple LED chips into a single light-emitting surface. This results in smoother light distribution and improved visual comfort.

Design flexibility: COB technology offers design flexibility, allowing for the creation of various shapes and sizes of light sources to suit different applications and form factors. COB lights can be customized to meet specific lighting requirements, such as color temperature, beam angle, and color rendering index (CRI).

Energy efficiency: COB lights are highly energy-efficient, providing high lumen output per watt of electrical power consumed. This makes them an environmentally friendly lighting option and helps reduce energy costs in both residential and commercial settings.

Applications: COB lights are used in a wide range of applications, including general lighting, architectural lighting, automotive lighting, horticultural lighting, and portable lighting devices. They are particularly well-suited for applications where high brightness, compact size, and uniform illumination are desired.

Overall, chip-on-board lights offer numerous advantages over traditional LED lighting solutions, including higher efficiency, better thermal management, and improved light quality, making them a popular choice for various indoor and outdoor lighting applications.
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