What Is This Tool?
This converter transforms luminance measurements from lumen per square foot per steradian, a non-SI unit, to kilocandela per square meter, an SI unit commonly used to represent brightness in photometry and display engineering.
How to Use This Tool?
-
Enter the luminance value in lumen per square foot per steradian.
-
Select 'lumen/square foot/steradian' as the input unit and 'kilocandela/square meter' as the output unit.
-
Click the convert button to see the result in kilocandela per square meter.
-
Refer to provided examples for guidance.
-
Use the conversion to interpret or report luminance in SI units.
Key Features
-
Converts non-SI luminance units (lumen/square foot/steradian) to SI units (kilocandela/square meter).
-
Browser-based tool requiring no installation.
-
Supports applications in lighting design, display technology, and outdoor signage measurement.
-
Includes example conversions for clarity.
-
Facilitates standardization in scientific and engineering contexts.
Examples
-
10 lumen/square foot/steradian equals 0.107639104 kilocandela/square meter.
-
50 lumen/square foot/steradian equals 0.53819552 kilocandela/square meter.
Common Use Cases
-
Measuring brightness of billboards and signs using U.S. customary units.
-
Lighting design assessments related to glare control and visual comfort using foot-based area units.
-
Calibrating and reporting luminance measurements from photometers in non-SI units.
-
Specifying peak brightness for HDR displays and televisions.
-
Establishing luminance standards for automotive HUDs and instrument panels.
-
Defining brightness criteria for outdoor LED billboards.
Tips & Best Practices
-
Always enter accurate input values to ensure correct conversion results.
-
Be aware that using non-SI customary units can introduce approximation errors.
-
Consider calibration and measurement conditions as luminance depends on these factors.
-
Use conversions to maintain consistency across international and scientific applications.
-
Check conversion examples to verify understanding.
Limitations
-
The from-unit uses non-SI customary area units which may cause rounding or approximation during conversion.
-
Luminance values depend on measurement setups and instrument calibration; thus, precision can vary.
-
This tool does not account for variations beyond simple unit conversion.
Frequently Asked Questions
-
What does lumen/square foot/steradian measure?
-
It measures luminance as luminous flux per unit area per unit solid angle, reflecting brightness in non-SI customary units.
-
Why convert lumen/square foot/steradian to kilocandela/square meter?
-
To standardize luminance values using SI units widely accepted in scientific, engineering, and international contexts.
-
Can this conversion be used for display brightness evaluation?
-
Yes, especially for specifying peak brightness of HDR displays, TVs, and automotive instrument panels.
Key Terminology
-
Lumen/square foot/steradian
-
A non-SI luminance unit measuring luminous flux per square foot per steradian, equivalent to candelas per square foot.
-
Kilocandela/square meter
-
An SI luminance unit equal to 1000 candelas per square meter, indicating luminous intensity emitted or reflected per unit area.
-
Luminance
-
A photometric measure of the luminous intensity per unit area projected in a specific direction.