What Is This Tool?
This converter allows users to transform luminance values expressed in lambert, a traditional CGS unit, into lumen per square centimeter per steradian, a photometric unit measuring luminous flux per area and solid angle. It is useful for bridging historical data with modern photometric analysis.
How to Use This Tool?
-
Enter the luminance value in lamberts (L).
-
Select lambert as the source unit and lumen/sq. cm/steradian as the target unit.
-
Click convert to obtain the equivalent luminance in lumen per square centimeter per steradian.
-
Interpret the result for your optical measurement or analysis needs.
Key Features
-
Converts luminance from lambert (L) to lumen/sq. cm/steradian accurately based on defined conversion rate.
-
Supports optical engineering, photographic, printing, and cinematic luminance data conversion.
-
Facilitates comparison of legacy CGS luminance data with modern SI-compatible units.
-
Browser-based and easy to use without the need for installation.
Examples
-
2 Lambert [L] equals 0.6366197724 lumen/sq. cm/steradian using the conversion formula.
-
0.5 Lambert [L] converts to 0.1591549431 lumen/sq. cm/steradian with this tool.
Common Use Cases
-
Converting older photometric data in lambert to modern SI-compatible luminance units for comparison.
-
Characterizing brightness in optical engineering and micro-display manufacturing.
-
Calibrating luminance meters and standards for small-area or high-intensity light sources.
Tips & Best Practices
-
Ensure input luminance values in lambert are accurate and correspond to standardized definitions.
-
Use this tool when converting legacy CGS data to avoid manual calculation errors.
-
Apply the converted results carefully in contexts requiring standardized SI luminance units.
Limitations
-
The lambert is a non-SI unit mainly used in historical or legacy contexts.
-
Conversions may be limited by rounding and precision loss during calculations.
-
Source data inconsistencies can affect conversion accuracy.
Frequently Asked Questions
-
What is a lambert in luminance measurement?
-
A lambert is a non-SI unit of luminance used for self-luminous or diffusely reflecting surfaces, defined as 1/π candela per square centimetre.
-
Why convert lambert to lumen/sq. cm/steradian?
-
Converting enables comparison of older CGS photometric data with modern SI-compatible units for accurate optical and photometric analysis.
-
Is lambert still commonly used today?
-
Lambert is largely supplanted by SI units and mainly appears in legacy data or specific historical measurement contexts.
Key Terminology
-
Lambert (L)
-
A non-SI unit of luminance equal to 1/π candela per square centimetre, used for self-luminous or diffusely reflecting surfaces.
-
Lumen per Square Centimeter per Steradian
-
A metric unit of luminance measuring luminous flux per unit area and solid angle, equivalent to candela per square centimeter.