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Reflected Luminous Flux is defined as a measure of the power of reflected visible light produced by a light source or light fitting. It represents the amount of light energy that is reflected from a surface per unit time.
The calculator uses the formula:
Where:
Explanation: The formula calculates the amount of light reflected from a surface by multiplying the incident light flux by the surface's reflection factor.
Details: Calculating reflected luminous flux is crucial for lighting design, architectural planning, and understanding how surfaces interact with light in various environments.
Tips: Enter incident luminous flux in lumens and reflection factor (a unitless value between 0 and 1). Both values must be valid positive numbers.
Q1: What is the typical range for reflection factor?
A: Reflection factor typically ranges from 0 (no reflection) to 1 (perfect reflection), though some materials may have values slightly above 1 in special cases.
Q2: How is incident luminous flux measured?
A: Incident luminous flux is typically measured using a light meter or photometer that captures the total light energy falling on a surface.
Q3: What factors affect reflection factor?
A: Surface material, color, texture, and angle of incidence all affect the reflection factor of a surface.
Q4: Can reflected flux be greater than incident flux?
A: Normally no, since reflection factor is typically ≤1. However, some specialized materials or optical systems might exhibit values slightly above 1.
Q5: How is this calculation used in practical applications?
A: This calculation is essential for lighting design, determining appropriate illumination levels, and optimizing energy efficiency in architectural and interior design projects.