1. What is the Candela To Lux Conversion?

The Candela to Lux conversion calculates illuminance (lux) from luminous intensity (candela) and distance. Lux measures the amount of light falling on a surface, while candela measures the intensity of light in a specific direction.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Candela \) — Luminous intensity (cd)
• \( Distance \) — Distance from light source (m)

Explanation: The illuminance decreases with the square of the distance from the light source (inverse square law).

3. Importance of Lux Calculation

Details: Lux calculation is essential for lighting design, photography, workplace safety standards, and ensuring adequate illumination for various tasks and environments.

4. Using the Calculator

Tips: Enter candela value and distance in meters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between candela and lux?
A: Candela measures luminous intensity (light output in a specific direction), while lux measures illuminance (amount of light falling on a surface).

Q2: Why does distance affect lux levels?
A: Due to the inverse square law, illuminance decreases proportionally to the square of the distance from the light source.

Q3: What are typical lux values for different environments?
A: Moonlight: 1 lux, Office lighting: 300-500 lux, Direct sunlight: 30,000-100,000 lux.

Q4: Does this calculation work for all light sources?
A: This calculation assumes a point light source and may not be accurate for large or complex light sources without additional considerations.

Q5: How does beam angle affect the calculation?
A: For directional light sources with specific beam angles, the calculation may need adjustment as the light is concentrated rather than radiating equally in all directions.