Investigation of the Angular Distribution of Luminous Intensity in the Symmetric Optical System of a COB LED High Bay

luminous-intensity-distribution angles of the LED. An optical system that can accept different LEDs was made to reduce the systems’s weight and size as we selected the chip-on-board LED, which is easy to apply to optical systems, unlike existing package-on-board LEDs. The luminous-intensity-distribution angles were 45°, 60°, 90°, and 120°. We researched these four types of optical systems. The 45 ° and 60 ° units were developed into reflectors, and the 90 ° and 120 ° units, into lenses. We checked the performance of the designed optical system through simulation and made a mock-up. Then we made a prototype of the chip-on-board LED high bay for use with the mock-up. After measuring its performance, we tested the luminous-intensity-distribution angles and compared them with simulation data. The resulting prototype was developed considering brightness, light uniformity, age, and economics which are suitable for a factory environment