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How to Convert from Lambert [L] to Lumen/square foot/steradian?
Easily convert luminance measurements from lambert [L], a CGS unit, to lumen per square foot per steradian, used in U.S. customary lighting and signage contexts.
Please check your input. It must be a valid numeric value.
Lambert [L] to Lumen/square foot/steradian Conversion Table
| Lambert [L] | Lumen/square foot/steradian |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Lambert [L] | Lumen/square foot/steradian |
|---|
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What Is This Tool?
This unit converter transforms luminance values from lambert [L], a non-SI unit commonly applied in optical engineering and photometric analysis, to lumen per square foot per steradian, which measures brightness using customary area and solid angle units primarily in the U.S.
How to Use This Tool?
- Enter the luminance value in lambert [L] into the input field
- Select lambert as the source unit and lumen/square foot/steradian as the target unit
- Click convert to obtain the equivalent luminance value in lumen/square foot/steradian
- Interpret the result for applications in lighting design, signage brightness, or measurement calibration
Key Features
- Converts luminance from lambert (CGS unit) to lumen/square foot/steradian (non-SI customary unit)
- Supports translation of historical and modern photometric data for cross-system comparison
- Ideal for lighting design, outdoor signage, and cinema projection luminance assessments
- Browser-based and easy to use with clear conversion output
- Utilizes the precise conversion rate of 1 lambert equals approximately 295.72 lumen/square foot/steradian
Examples
- 2 Lambert equals approximately 591.44 lumen/square foot/steradian
- 0.5 Lambert converts to about 147.86 lumen/square foot/steradian
Common Use Cases
- Optical engineering projects requiring conversion of CGS luminance values to customary units
- Assessing and specifying screen brightness in cinema and projection technology
- Evaluating brightness of signs, billboards, and outdoor displays using U.S. customary units
- Architectural lighting design focusing on glare control and visual comfort
- Calibrating luminance measurements from photometric instruments reporting in various units
Tips & Best Practices
- Always verify the units before converting to ensure correct input and output selection
- Consider the context of measurement since both units are non-SI and conversions depend on surface and emission conditions
- Use this tool to translate older photometric data for modern analysis or comparison
- Apply conversion results cautiously when integrating luminance values with SI unit-based calculations
Limitations
- Both lambert and lumen/square foot/steradian are non-SI units requiring careful consideration when compared to SI standards
- Measurement accuracy depends on precise assessment of surface area and solid angle in respective unit systems
- Conversion assumes ideal surface and emission conditions consistent with luminance unit definitions
Frequently Asked Questions
- What does 1 lambert represent in luminance terms?
- 1 lambert is a non-SI luminance unit equal to 1/π candela per square centimetre, approximately 3183.1 candelas per square meter.
- Why convert lambert to lumen per square foot per steradian?
- This conversion helps translate historically used CGS luminance values into U.S. customary units commonly employed in lighting design, signage, and architectural evaluations.
- Can I use this converter for SI unit luminance conversions?
- This tool focuses on converting between two non-SI units; it does not directly convert to SI luminance units such as candelas per square meter.
Key Terminology
- Lambert [L]
- A non-SI CGS unit of luminance for self-luminous or diffusely reflecting surfaces, defined as 1/π candela per square centimetre.
- Lumen/square foot/steradian
- A non-SI luminance unit representing luminous flux per unit area per unit solid angle, equal to candelas per square foot, used primarily in U.S. customary systems.