In industrial buildings, work lights are capable of enhancing clarity over the work space. Specifically, brightness ratings are used to gauge the distance of light beams and detection rates. Another factor that is rarely considered, when selecting lights for industrial work sites is color rendering index (CRI) values. This refers to the unit’s ability to reproduce certain colors with a high degree of accurateness, resulting in robust color depiction. Read on to learn about CRI lighting and its applications.
Measuring the Quality of Illumination
CRI ratings are applied, based on a 1-100 scoring system. The rating is measured using eight standard pastel colors, which are averaged together to arrive at the CRI value.
Most LED lamps come with a CRI rating of 80+. While fluorescent fixtures provide CRI ratings between 62 and 90 (or higher). Interestingly, out of all the lighting technologies available in the market today, mercury-vapor units offer the lowest CRI ratings, at roughly 45. CRI values in the 90+ range are considered optimal for design or color-related applications.
It is important to consider that CRI values cannot be used to determine the characteristics of the light on its own. Other factors, such as color temperature and beam angle, can also affect color depiction.
For instance, low color-temperature units provide yellowish to reddish illumination, which results in less accurate color rendering. To better understand this, imagine the way objects look during sunset, compared to the way objects appear during mid-afternoon.
Applications for High CRI Lighting Systems
High CRI light sources, such as LEDs, are useful in a variety of locations and work sites. Examples of tasks, sectors and services that can directly benefit from this type of luminary include the following: commercial paint spray booths, art shows, photo galleries, large-scale exhibits, laboratories, scientific testing, manufacturing floors, design rooms and more.…