Advanced Lighting Guidelines Glossary
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Item
Definition
Vacancy sensor Term used to describe manual-ON occupancy sensors. Original Chapter Source: Controls Provided By: Craig DiLouie More »
VDT Video Display Terminal (computer monitor) Original Chapter Source: Design Considerations Provided By: Leslie North More »
Veiling reflections Specular reflections that appear on an object viewed and that partially or wholly obscure the detail by reducing luminance contrast… More »
Vertical illuminance Illuminance on a vertical surface. Original Chapter Source: Daylighting Provided by: Kosta Papamichael / CLTC More »
Visible Light Transmittance (VLT) Transmittance of a material for visible light. Original Chapter Source: Daylighting Provided by: Kosta Papamichael / CLTC More »
Visual acuity An angular measure of spatial discrimination between neighboring objects such as points or lines that can just be perceived to… More »
Visual cortex The part of the brain that receives signals from the eyes and which constructs a model of the outside world… More »
Visual field The angular area over which objects can be seen. For normal viewing, the visual field is limited by the obstructions… More »
Visual Impairment Functional loss of visual acuity, reduction of peripheral field detection, or reduced peak contrast sensitivity. Some causes are retinal degeneration,… More »
Visual performance The performance of a visual task measured in terms of speed and accuracy. Original Chapter Source: Health & Performance Provided… More »
Vitreous humor The transparent, jelly-like substance that fills the space between the lens and the retina in the eye. Original Chapter Source:… More »
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