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How to Convert from Lumen/square Centimeter to Watt/sq. cm (at 555 nm)?
Easily convert illumination values from lumen per square centimeter to watt per square centimeter at 555 nm using our online unit converter. Understand the relationship between photometric and radiometric measures for precise lighting calibration and analysis.
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Lumen/square centimeter to Watt/sq. cm (at 555 nm) Conversion Table
| Lumen/square centimeter | Watt/sq. cm (at 555 nm) |
|---|
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.
| Lumen/square centimeter | Watt/sq. cm (at 555 nm) |
|---|
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- How to convert from lumen/square centimeter to watt/sq. cm (at 555 nm)?
What Is This Tool?
This tool converts illumination measurements from lumen per square centimeter to watt per square centimeter at the wavelength of 555 nm. It helps translate photometric illuminance, reflecting human eye response, into monochromatic radiometric power relevant for scientific and industrial applications.
How to Use This Tool?
- Enter the illumination value in lumen per square centimeter
- Select the target unit as watt per square centimeter at 555 nm
- Apply the conversion formula automatically: multiply by 0.0014641288
- Review the converted value to use in your calculations or measurements
Key Features
- Converts illumination values between lumen/cm² and watt/cm² specifically at 555 nm wavelength
- Supports users in optical engineering, vision science, and lighting design fields
- Calculates monochromatic irradiance based on photopic luminous-efficiency standards
- Offers clear conversion formula and examples for easy understanding
- Browser-based and user-friendly interface for quick conversions
Examples
- 10 lumen/square centimeter equals 0.014641288 watt/sq. cm (at 555 nm)
- 50 lumen/square centimeter equals 0.07320644 watt/sq. cm (at 555 nm)
Common Use Cases
- Specifying output intensity of small, high-power LEDs and LED dies per unit area
- Measuring illuminance on microscope slides or sensor surfaces in labs
- Calibrating displays and optical components using convenient per-cm² metrics
- Calibrating light sources and photometers for lighting design and standards
- Quantifying monochromatic stimuli in vision science and psychophysics experiments
- Determining exposure levels and safety thresholds for green optical sources in photobiology
Tips & Best Practices
- Ensure illumination measurements are monochromatic at 555 nm for accurate conversion
- Use calibrated instruments and controlled conditions for precise data
- Double-check unit selection to avoid errors especially with broadband sources
- Apply the fixed luminous efficacy of 683 lm/W for conversions at this wavelength
Limitations
- Applicable only at wavelength 555 nm corresponding to photopic peak sensitivity
- Not valid for broadband or varying wavelength light sources
- Assumes monochromatic illumination and fixed luminous efficacy of 683 lm/W
- Accuracy depends on calibration and experimental control of measurements
Frequently Asked Questions
- Can this converter be used for broad spectrum light sources?
- No, the conversion specifically applies to monochromatic light at 555 nm and is not valid for broadband or other wavelengths.
- What does 1 lumen per square centimeter represent?
- It is a photometric measure quantifying luminous flux falling on one square centimeter, reflecting the perceived brightness weighted by human eye sensitivity.
- Why is the wavelength 555 nm important for this conversion?
- 555 nm corresponds to the peak of the photopic luminous-efficiency function, making it the reference for translating radiometric power to perceived illuminance.
Key Terminology
- Lumen/square centimeter
- A measure of luminous flux per unit area indicating perceived brightness weighted by the photopic eye response.
- Watt/sq. cm (at 555 nm)
- A radiometric unit measuring radiant power per unit area at the specific wavelength of 555 nm.
- Photopic luminous-efficiency function
- The spectral sensitivity of the human eye under well-lit conditions, peaking at 555 nm.