Why is 555 nm important in this conversion?

555 nm corresponds to the peak of human photopic visual sensitivity, making it a standard reference wavelength for relating radiometric and photometric measurements.

Can this conversion be used for all types of light sources?

This conversion works best when the light source's spectral emissions are near 555 nm; it is less accurate for sources with significantly different spectra.

What does one kilocandela per square meter represent?

It represents 1000 candelas per square meter, measuring luminous intensity emitted or reflected by a surface per unit projected area in a given direction.

How to Convert from Kilocandela/square meter to Watt/sq. cm/steradian (at 555 nm)?

Learn how to convert luminance values from kilocandela per square meter to watt per square centimeter per steradian at 555 nm, useful for photometry, vision science, and optical calibration.

Kilocandela/square meter

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

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

Kilocandela/square meter to Watt/sq. cm/steradian (at 555 nm) Conversion Table

Kilocandela/square meter	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

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Interval

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

Kilocandela/square meter to Watt/sq. cm/steradian (at 555 nm) Conversion Table
Kilocandela/square meter	Watt/sq. cm/steradian (at 555 nm)

Explore More Luminance Units Converter

What Is This Tool?

This converter translates luminance measurements expressed in kilocandela per square meter into radiometric spectral radiance units measured in watts per square centimeter per steradian at 555 nm. It aids in relating photometric luminance to radiometric quantities based on human visual sensitivity.

How to Use This Tool?

Enter the luminance value in kilocandela per square meter.
Select the target unit watt per square centimeter per steradian at 555 nm.
Click the convert button to obtain the equivalent radiometric spectral radiance.
Use the result for calibration, research, or display specification purposes.

Key Features

Converts luminance from kilocandela per square meter to watt per square centimeter per steradian at 555 nm.
Supports measurements relevant to display engineering, vision research, and optical metrology.
Considers the photopic peak wavelength to align measurements with human visual sensitivity.
Browser-based tool providing quick and reliable unit conversion.

Examples

10 kilocandelas per square meter converts to 0.001464129 watt per square centimeter per steradian at 555 nm.
500 kilocandelas per square meter converts to 0.07320645 watt per square centimeter per steradian at 555 nm.

Common Use Cases

Specifying peak brightness levels of HDR displays and televisions.
Converting photometric luminance for automotive heads-up displays and instrument panels.
Calibrating light sources and instruments in optical metrology and vision science.
Setting brightness standards for outdoor LED signage and billboards.
Relating radiometric radiance to photometric luminance at the photopic peak for research.

Tips & Best Practices

Ensure the light source spectral emissions are close to 555 nm for accurate conversion.
Use precise measurement equipment due to the small watt per square centimeter and steradian magnitudes involved.
Apply this conversion mainly under photopic vision conditions as it assumes standard luminous efficiency.
Double-check unit selections before converting for reliable results.

Limitations

Conversion accuracy depends on the 555 nm reference wavelength matching the actual light source spectrum.
Not suitable for light sources with spectral distributions that differ significantly from 555 nm.
Assumes standard photopic luminous efficiency; not accurate under scotopic or mesopic lighting conditions.
Requires precise instrumentation due to the low magnitude of units in watts per square centimeter per steradian.

Frequently Asked Questions

Why is 555 nm important in this conversion?: 555 nm corresponds to the peak of human photopic visual sensitivity, making it a standard reference wavelength for relating radiometric and photometric measurements.
Can this conversion be used for all types of light sources?: This conversion works best when the light source's spectral emissions are near 555 nm; it is less accurate for sources with significantly different spectra.
What does one kilocandela per square meter represent?: It represents 1000 candelas per square meter, measuring luminous intensity emitted or reflected by a surface per unit projected area in a given direction.

Key Terminology

Kilocandela per square meter: A luminance unit equal to 1000 candelas per square meter, describing the luminous intensity per projected area.
Watt per square centimeter per steradian (at 555 nm): A radiometric spectral radiance unit representing radiant power per unit projected area and solid angle at 555 nm wavelength.
Photopic vision: Human vision under well-lit conditions where sensitivity peaks near 555 nm wavelength.

Quick Knowledge Check

What does a kilocandela per square meter measure?

Radiant power per unit area

Luminous intensity per unit projected area

Spectral radiance at 555 nm

Why is the wavelength 555 nm used in this converter?

It matches the ultraviolet sensitivity curve

It aligns with the photopic peak of human vision

It corresponds to infrared emissions

What is a limitation of this conversion?

It works only for scotopic vision conditions

Accuracy depends on the light source spectrum matching 555 nm

It assumes infrared luminous efficiency

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