What does lumen/sq. cm/steradian measure?

It measures the luminous flux per unit area and per unit solid angle, representing luminance for very small or bright light sources.

Why use foot-lambert instead of lumen/sq. cm/steradian?

Foot-lambert is an imperial unit commonly used for screen brightness and projection system measurements where imperial standards apply.

Can I use this converter for all luminance measurements?

This converter is suitable for precise photometric measurements but requires considering surface and viewing factors for accurate results.

Convert Lumen/sq. cm/steradian to Foot-lambert [fL]

Easily convert luminance values from lumen per square centimetre per steradian to foot-lambert [fL] using this practical unit converter designed for photometric and optical applications.

Lumen/sq. cm/steradian

Foot-lambert [fL]

Please check your input. It must be a valid numeric value.

Lumen/sq. cm/steradian to Foot-lambert [fL] Conversion Table

Lumen/sq. cm/steradian	Foot-lambert [fL]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Lumen/sq. cm/steradian to Foot-lambert [fL] Conversion Table
Lumen/sq. cm/steradian	Foot-lambert [fL]

Explore More Luminance Units Converter

What Is This Tool?

This converter transforms luminance measurements from lumen/sq. cm/steradian, a unit expressing luminous intensity per small area and solid angle, into foot-lambert [fL], an imperial unit expressing projected luminance. It assists users in translating precise photometric data into formats suitable for display calibration, projection system design, and optical engineering.

How to Use This Tool?

Enter the luminance value in lumen/sq. cm/steradian.
Select the input and output units accordingly.
Click the convert button to obtain the equivalent foot-lambert value.
Use the converted value for your specific photometric or display application.

Key Features

Converts luminance from lumen/sq. cm/steradian to foot-lambert [fL].
Supports unit comparison between metric and imperial luminance units.
Ideal for small-area or high-brightness light source measurements.
Useful for cinema, home theater, and display brightness calibration.
Browser-based tool requiring no additional software installation.

Examples

Convert 0.5 lumen/sq. cm/steradian: equals 1459.32 foot-lambert [fL].
Convert 2 lumen/sq. cm/steradian: equals 5837.27 foot-lambert [fL].

Common Use Cases

Characterizing brightness of micro-LED or OLED emitters in small areas.
Calibrating luminance meters and testing standards for intense light samples.
Specifying projected screen brightness in theaters and home cinemas.
Designing and testing projection and optical illumination systems.
Comparing display luminance where imperial units are preferred.

Tips & Best Practices

Ensure consistent measurement units between metric and imperial systems.
Consider viewing geometry and surface reflectance when interpreting luminance.
Use this converter to align scientific data with industry brightness specifications.
Validate results with calibration instruments when precision is critical.

Limitations

Conversion involves different measurement systems; verify unit consistency.
Luminance interpretation depends on viewing angle and surface properties.
This tool does not provide absolute accuracy for all optical configurations.

Frequently Asked Questions

What does lumen/sq. cm/steradian measure?: It measures the luminous flux per unit area and per unit solid angle, representing luminance for very small or bright light sources.
Why use foot-lambert instead of lumen/sq. cm/steradian?: Foot-lambert is an imperial unit commonly used for screen brightness and projection system measurements where imperial standards apply.
Can I use this converter for all luminance measurements?: This converter is suitable for precise photometric measurements but requires considering surface and viewing factors for accurate results.

Key Terminology

Lumen/sq. cm/steradian: A photometric luminance unit representing luminous intensity per small area and per solid angle, equivalent to candela per square centimetre.
Foot-lambert [fL]: An imperial luminance unit expressing luminous intensity emitted or reflected per projected area, defined as 1/π candela per square foot.
Luminance: A measure of the luminous intensity emitted or reflected by a surface per unit area in a given direction.

Quick Knowledge Check

What unit does lumen/sq. cm/steradian also equal in terms of candela?

Candela per square foot

Candela per square centimetre

Candela per steradian

For what application is foot-lambert commonly used?

Measuring small micro-LED brightness

Specifying projected-screen brightness in cinemas

Calibrating photometric instruments

What should be considered when interpreting luminance values?

Surface properties and viewing geometry

Color temperature of the light source

Time of day when measurement is taken

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