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Convert Watt/sq. cm/steradian (at 555 nm) to Lumen/sq. cm/steradian
Easily convert luminance measurements from watt per square centimeter per steradian at 555 nm to lumen per square centimeter per steradian using this unit converter tool designed for vision research and optical metrology applications.
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Watt/sq. cm/steradian (at 555 nm) to Lumen/sq. cm/steradian Conversion Table
| Watt/sq. cm/steradian (at 555 nm) | Lumen/sq. cm/steradian |
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Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Watt/sq. cm/steradian (at 555 nm) | Lumen/sq. cm/steradian |
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What Is This Tool?
This tool helps convert luminance values measured in watt per square centimeter per steradian at 555 nm into lumen per square centimeter per steradian. It facilitates translating radiometric data at the photopic peak wavelength into photometric units aligned with human visual sensitivity.
How to Use This Tool?
- Enter the luminance value in watt per square centimeter per steradian at 555 nm
- Select the input unit and the target unit lumen per square centimeter per steradian
- Click the convert button to see the equivalent luminance value
- Use the result for calibration, testing, or design purposes
Key Features
- Conversion based on the photopic peak wavelength of 555 nm
- Supports radiometric to photometric luminance translation
- Easy-to-use interface for accurate unit conversion
- Ideal for small-area light source brightness comparison
- Browser-based tool requiring no installation
Examples
- 0.5 Watt/sq. cm/steradian (at 555 nm) equals 341.5 Lumen/sq. cm/steradian
- 2 Watt/sq. cm/steradian (at 555 nm) equals 1366 Lumen/sq. cm/steradian
Common Use Cases
- Characterizing spectral radiance of small light sources or displays at 555 nm
- Converting radiometric luminance to photometric luminance reflecting human vision
- Testing and calibrating LEDs, lamps, and optical systems at the photopic peak
- Brightness analysis of micro-LED and OLED pixels
- Calibration of luminance meters for small or high-intensity samples
Tips & Best Practices
- Ensure the source wavelength is exactly 555 nm for accurate conversion
- Use this tool primarily for small-area luminance measurements
- Consider human eye sensitivity variations when interpreting results
- Apply results in vision research, optical metrology, and display design
- Verify calibration settings when using converted luminance values
Limitations
- Conversion assumes wavelength is strictly 555 nm, limiting use for other wavelengths
- Applicable mainly to small-area sources due to unit definitions
- Sensitivity differences among observers can affect photometric interpretation
- Lighting environment variations may alter practical luminance perception
Frequently Asked Questions
- Why is 555 nm used for this luminance conversion?
- Because 555 nm corresponds to the photopic peak wavelength where the human eye is most sensitive, making it ideal for converting radiometric values to photometric luminance.
- Can this conversion be used for larger area light sources?
- This conversion is primarily suitable for small-area sources given the nature of the radiance and luminance units involved.
- What does 1 Watt/sq. cm/steradian (at 555 nm) equal in lumen units?
- It equals 683 Lumen per square centimeter per steradian.
Key Terminology
- Watt/sq. cm/steradian (at 555 nm)
- A radiometric spectral radiance unit measuring radiant power per projected area per solid angle at the 555 nm wavelength.
- Lumen/sq. cm/steradian
- A photometric luminance unit quantifying luminous flux per area and solid angle, equivalent to candela per square centimeter.
- Photopic Peak
- The wavelength (555 nm) where human visual sensitivity is highest under well-lit conditions.