61 Natural Lighting
The use of direct and ambient light from the sun in a space.
As one of the most important considerations in the design process, natural light has psychological and physiological effects on the wellness of users. Also known as daylighting, this design technique efficiently brings natural light into a space using exterior glazing, windows, doors, and skylights. Such strategies also can save energy by reducing the need for artificial lighting.
In addition, fixtures, paint, and finishes can increase or decrease the reflectivity of the natural light, which bounces throughout a space until all of its energy is absorbed. The science of daylighting design is complex; when choosing a daylight fixture, a designer must consider balancing heat gains and losses, reducing glare, and controlling the variations in availability of daylight.
This coworking space in London is flooded with diffuse natural light from large exterior windows. Additional internal glazing brings light deep into the other rooms.
Natural Light Reflection
External Reflection
Light that reflects off ground surfaces, adjacent buildings, window sills, and light shelves. (Excessive reflection can cause glare and may be undesirable).
Internal Reflection
Light reflecting off internal walls, ceilings, and floors; includes highly reflective surfaces (smooth or glossy), and white or light finishes and mirrors.
The Liberation Coffee House by ORA located in the Los Angeles LGBT Center uses a colorful array of blinds to diffuse the intensity of the California sun.
Daylighting Fixtures
Windows
Most common source of daylight.
Skylights
Provide lighting from above, and can be passive or active.
Solar Tubes
Light channels that allow light to enter from roof and reflected with mirrors.
Redirection Devices
Direct incoming sunlight to ceiling; reduce glare and increase daylight penetration.
Solar Shading Devices
Include blinds and overhangs to control solar gains and glare from windows.
Electric Lighting Controls
Incorporate photocell sensors to dim or turn off a lighting system in response to available light.
