lightwells

A lightwell is a vertical shaft or opening in a building designed to bring natural light into interior spaces that would otherwise have little or no access to daylight. They are often found in buildings with deep floor plans or narrow courtyards. The primary purpose of a lightwell is to improve the interior environment by increasing illumination, which can reduce the need for artificial lighting during the day and create a more pleasant atmosphere.

Lightwells can take various forms, from simple openings in the ground to elaborate architectural features that extend through multiple stories of a building. They are typically lined with reflective materials such as white paint or tiles to maximize the amount of light directed downwards. The design of a lightwell needs to consider factors like the angle of the sun, potential obstructions, and the desired distribution of light. In some cases, lightwells may also serve for ventilation, allowing fresh air to circulate into the building.

Historically, lightwells have been used in various architectural styles, particularly in dense urban environments where space is limited and natural light penetration is a challenge. They are a functional solution that addresses both aesthetic and practical concerns related to natural illumination within built structures. The effectiveness of a lightwell depends on its size, depth, and the reflectivity of its surfaces.