What is millilambert used for?

Millilambert is a unit of luminance traditionally used to specify light intensity emitted or reflected per area and solid angle, especially in imaging and cinematography.

Why convert millilambert to watt/sq. cm/steradian at 555 nm?

Converting to watt/sq. cm/steradian at 555 nm aligns photometric data with radiometric spectral radiance measurements that correspond to the peak sensitivity of human vision.

Can this conversion be applied to wavelengths other than 555 nm?

No, this conversion specifically applies to monochromatic spectral radiance at 555 nm and does not account for wavelengths outside this reference.

How to Convert from Millilambert [mL] to Watt/sq. cm/steradian (at 555 nm)?

Convert luminance measurements from millilambert (mL) to watt per square centimeter per steradian at 555 nm efficiently using this online tool. Understand the conversion and its applications in imaging, photometry, and optical metrology.

Millilambert [mL]

Watt/sq. cm/steradian (at 555 nm)

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

Millilambert [mL] to Watt/sq. cm/steradian (at 555 nm) Conversion Table

Millilambert [mL]	Watt/sq. cm/steradian (at 555 nm)

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.

Millilambert [mL] to Watt/sq. cm/steradian (at 555 nm) Conversion Table
Millilambert [mL]	Watt/sq. cm/steradian (at 555 nm)

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What Is This Tool?

This tool converts luminance values from millilambert (mL), a non-SI photometric unit, to radiometric spectral radiance units of watt per square centimeter per steradian at the wavelength 555 nm, aligning photometric data with radiometric measures referencing human visual sensitivity.

How to Use This Tool?

Enter the luminance value in millilambert (mL) you wish to convert.
Select the target unit: watt per square centimeter per steradian at 555 nm.
Submit the input to receive the converted result instantly.
Use the converted data for analysis, calibration, or further research.

Key Features

Converts millilambert to watt/sq. cm/steradian (at 555 nm) using precise conversion factors.
Suitable for relating legacy photometric data to radiometric spectral radiance at the photopic peak.
Supports applications in imaging labs, broadcast engineering, vision research, and optical metrology.
Browser-based and easy to use without need for manual calculations.

Examples

Converting 10 mL results in 4.6604668548139e-6 watt/sq. cm/steradian at 555 nm.
A value of 0.5 mL converts to 2.33023342740695e-7 watt/sq. cm/steradian at 555 nm.

Common Use Cases

Specifying display and projector screen luminance in cinematography and broadcast engineering.
Characterizing luminance of photographic prints, films, and lightboxes in imaging labs.
Calibrating instruments and comparing light source emissions at 555 nm in photometric testing.
Relating legacy photometric measures to radiometric data for vision research.

Tips & Best Practices

Always verify the units before conversion to ensure accuracy in data analysis.
Use this converter when working with legacy luminance data needing translation to modern radiometric units.
Consider the monochromatic assumption at 555 nm when interpreting radiometric results.
Calibrate instruments regularly to ensure reliable measurement correspondence.

Limitations

Millilambert is a non-SI, legacy unit and may lack precise standardization.
The radiometric measure focuses on monochromatic light at 555 nm, excluding spectral variations.
Conversion accuracy depends on proper spectral response and instrument calibration.

Frequently Asked Questions

What is millilambert used for?: Millilambert is a unit of luminance traditionally used to specify light intensity emitted or reflected per area and solid angle, especially in imaging and cinematography.
Why convert millilambert to watt/sq. cm/steradian at 555 nm?: Converting to watt/sq. cm/steradian at 555 nm aligns photometric data with radiometric spectral radiance measurements that correspond to the peak sensitivity of human vision.
Can this conversion be applied to wavelengths other than 555 nm?: No, this conversion specifically applies to monochromatic spectral radiance at 555 nm and does not account for wavelengths outside this reference.

Key Terminology

Millilambert [mL]: A non-SI unit of luminance equal to one thousandth of a lambert, measuring luminous intensity emitted or reflected per unit area into a solid angle.
Watt/sq. cm/steradian (at 555 nm): A radiometric spectral radiance unit representing radiant power per projected area per solid angle at the 555 nm wavelength, relevant to human visual sensitivity.
Photopic Peak: The wavelength near 555 nm at which human visual sensitivity to light is highest under well-lit conditions.

Quick Knowledge Check

What does the unit millilambert measure?

Radiant power per area

Luminance as luminous intensity per area and solid angle

Electric power consumption

At which wavelength does the watt/sq. cm/steradian unit reference in this converter?

700 nm

555 nm

450 nm

Which of the following is a limitation when converting millilambert to watt/sq. cm/steradian at 555 nm?

Millilambert is an SI unit

The conversion assumes monochromatic light at 555 nm

The conversion is valid for all wavelengths

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