Why is 555 nm used in this conversion?

555 nm corresponds to the peak sensitivity of human photopic vision, aligning radiometric measurements with human visual perception.

Can I use this conversion for any light source?

The conversion assumes luminance corresponds specifically to 555 nm wavelength and may not be accurate for light sources with different spectral properties.

What applications benefit from this unit conversion?

It is commonly used in display technology, vision science research, optical metrology, lighting design, and photometric testing laboratories.

How to Convert Candela/Square Meter to Watt/Sq. Cm/Steradian (at 555 nm)

Learn how to convert luminance values from candela per square meter to watt per square centimeter per steradian at 555 nm, a standard in vision science and photometric testing.

Candela/square meter

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

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

Candela/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

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.

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

Explore More Luminance Units Converter

What Is This Tool?

This converter transforms luminance measurements expressed in candela per square meter into radiometric spectral radiance expressed in watt per square centimeter per steradian at 555 nm, enabling precise optical characterization aligned with human visual sensitivity.

How to Use This Tool?

Enter the luminance value in candela per square meter
Select the target unit as watt per square centimeter per steradian at 555 nm
Click convert to see the equivalent radiometric spectral radiance
Use the result for precise instrument calibration or optical analysis

Key Features

Converts luminance units from candela/square meter to watt/sq. cm/steradian at 555 nm
Supports applications in display technology, vision science, and optical metrology
Facilitates translation between photometric and radiometric quantities
Browser-based and easy to use without any installation

Examples

10 candela/square meter equals 1.4641288433382e-6 watt/sq. cm/steradian (at 555 nm)
100 candela/square meter equals 1.4641288433382e-5 watt/sq. cm/steradian (at 555 nm)

Common Use Cases

Measuring and specifying display brightness for electronic screens
Evaluating lighting design and surface brightness in architectural projects
Testing luminance of road signs and safety signage for regulation
Characterizing small-area light sources and displays in vision research
Converting photometric luminance to radiometric spectral radiance at 555 nm
Specifying LED or optical system output for photometric testing and calibration

Tips & Best Practices

Ensure luminance values correspond to the 555 nm wavelength peak for accurate conversion
Calibrate instruments regularly to maintain measurement accuracy
Use the converter within the standardized conditions it supports
Be aware that spectral differences in light sources may affect the conversion validity

Limitations

Conversion only applies accurately at the 555 nm wavelength corresponding to peak photopic sensitivity
Different wavelengths require separate conversion factors not covered by this tool
Measurement accuracy depends on proper instrument calibration and environment
Not suitable for light sources with spectra differing significantly from the photopic peak

Frequently Asked Questions

Why is 555 nm used in this conversion?: 555 nm corresponds to the peak sensitivity of human photopic vision, aligning radiometric measurements with human visual perception.
Can I use this conversion for any light source?: The conversion assumes luminance corresponds specifically to 555 nm wavelength and may not be accurate for light sources with different spectral properties.
What applications benefit from this unit conversion?: It is commonly used in display technology, vision science research, optical metrology, lighting design, and photometric testing laboratories.

Key Terminology

Candela per square meter (cd/m²): The SI unit of luminance indicating luminous intensity emitted or reflected per unit projected area in a specific direction.
Watt per square centimeter per steradian (at 555 nm): A radiometric spectral radiance measure indicating radiant power per area and solid angle at the 555 nm wavelength.
Photopic peak: The wavelength around 555 nm where human visual sensitivity is highest under well-lit conditions.

Quick Knowledge Check

What does candela per square meter measure?

Radiant power per area

Luminous intensity per projected area in a direction

Solid angle in steradians

At which wavelength does the conversion to watt/sq. cm/steradian apply?

555 nm

600 nm

450 nm

Which industry commonly uses this conversion?

Vision science and display technology

Agriculture and food production

Automotive fuel efficiency

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