Cleanroom lights are used to create well-illuminated environments that can enhance workplace satisfaction and positively impact organizational productivity while maintaining excellent particle emission behaviors for cleanroom applications. A cleanroom is a space where the concentration of airborne particles is controlled to specified limits. It is constructed and used in such a way as to minimize the introduction, generation and retention of microscopic contaminants. The microscopic contaminant can be a speck of dust in a semiconductor or microelectronics manufacturing facility which would ruin millions worth of miniature circuits or microchips. It could be a bacterium in an operating room that can increase infection or pose a health hazard to a patient. It could also be an organism, such as a microbe, which affects bacterial growth in the preparation of biological, pharmaceutical, and genetic products. Atmospherically controlled processing and laboratory environments are a critical demand in manufacturing, precision engineering, packaging, food production, research, laboratory work and medical applications.