Knowledge base
Isophase light
Isophase light is a lighting signal in which the light source is on and off for an equal amount of time within a single cycle. This type of flashing light...
Read moreEquivalent Sphere Illuminance (ESI)
Equivalent Sphere Illuminance (ESI) is a lighting metric that measures the average illuminance on an imaginary sphere surrounding a specific point in a space. This concept is used to assess...
Read moreFidelity Index (Rf)
The Fidelity Index (Rf) is a measure of the accuracy of color rendering in light sources. It indicates how well a light source reproduces the colors of objects compared to...
Read moreFlicker Fusion Frequency (FFF)
The flicker fusion frequency (FFF) is the minimum frequency at which a flickering light is perceived as continuous by the human eye. This concept is crucial in displays, lighting, film...
Read moreFenestra method
The Fenestra method is a technique used in architecture and lighting technology to optimally utilize natural light through strategically placed openings (fenestrae or windows) in buildings. The goal is to...
Read moreDichroic filter
A dichroic filter is an optical filter that reflects specific wavelengths of light while transmitting others. It is used in lighting, photography, laser optics, and scientific instruments to precisely separate...
Read moreColorimeter
A colorimeter is an instrument used to measure and analyze the color of an object based on the amount of light absorbed or reflected. It is widely used in color...
Read moreDensitometer
A densitometer is a measuring instrument used to determine the optical density (density) of a material or surface . It is primarily used in photography, printing, medical imaging, and materials...
Read moreDiscomfort Glare Factor (DGF)
The Discomfort Glare Factor (DGF) is a measure of how bothersome a light source is perceived to be , without necessarily leading to reduced vision or loss of contrast. This...
Read moreDisability Glare Factor (DGF)
The Disability Glare Factor (DGF) is a measure of the amount of bothersome glare a light source creates , which impairs visibility of objects. This type of glare occurs when...
Read moreCornice lighting
Cornice lighting is an indirect form of lighting that is built into or placed on a cornice (a decorative border near the ceiling or along walls). This lighting provides a...
Read moreContinuous Wave (CW) lamp
A Continuous Wave (CW) lamp is a light source that emits constant, non-pulsed light . Unlike pulsed wave lamps , which operate in short bursts, a CW lamp provides a...
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