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Convert Watt/sq. cm (at 555 nm) to Candela steradian/sq. meter
Easily convert units from watt per square centimeter at 555 nm to candela steradian per square meter using this specialized illumination unit converter. Ideal for lighting design, photometry, and vision science applications.
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Watt/sq. cm (at 555 nm) to Candela steradian/sq. meter Conversion Table
| Watt/sq. cm (at 555 nm) | Candela steradian/sq. meter |
|---|
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| Watt/sq. cm (at 555 nm) | Candela steradian/sq. meter |
|---|
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What Is This Tool?
This converter transforms measurements from watt per square centimeter at 555 nm—a radiometric irradiance unit—into candela steradian per square meter, which represents photometric illuminance. It is used to translate monochromatic radiant power at the photopic sensitivity peak into a standardized lighting measure.
How to Use This Tool?
- Enter the value in watt per square centimeter at 555 nm
- Select the input and output units accordingly
- Click convert to obtain the result in candela steradian per square meter
- Use the conversion results for lighting design or calibration purposes
Key Features
- Converts monochromatic irradiance at 555 nm to photometric illuminance
- Calculates using the luminous efficacy of 683 lm/W for 555 nm wavelength
- Supports lighting design, vision science, and photobiological safety applications
- Browser-based and user friendly for quick unit translation
- Provides examples for practical value conversion
Examples
- 0.5 watt/sq. cm (at 555 nm) converts to 3,415,000 candela steradian/sq. meter
- 0.1 watt/sq. cm (at 555 nm) converts to 683,000 candela steradian/sq. meter
Common Use Cases
- Calibrating light sources and photometers for lighting standards
- Converting measured irradiance to illuminance for lighting design
- Setting exposure levels during photobiological safety testing
- Specifying and verifying illumination levels for indoor and outdoor environments
- Measuring and calibrating light meters in photography and instrumentation
Tips & Best Practices
- Ensure measurements are made exactly at 555 nm wavelength for accuracy
- Use the tool only for photopic (daylight) vision relevance
- Verify input irradiance units carefully before converting
- Apply the results within appropriate lighting design and safety contexts
- Recognize that precision depends on spectral measurement controls
Limitations
- Valid only for monochromatic light at 555 nm; other wavelengths require different conversions
- Applicable solely under photopic vision conditions, not scotopic or mesopic
- Conversion accuracy depends on precise irradiance and spectral control
Frequently Asked Questions
- Why is 555 nm used for this conversion?
- Because 555 nm corresponds to the peak of photopic luminous efficiency, making it the standard reference wavelength for converting radiometric irradiance to photometric illuminance.
- Can I use this converter for wavelengths other than 555 nm?
- No, the conversion assumes monochromatic irradiance at exactly 555 nm. Different wavelengths require other luminous efficacy values and conversions.
- Is this tool suitable for scotopic or mesopic vision measurements?
- No, it is designed for photopic (daylight) vision sensitivity and does not directly apply to scotopic or mesopic conditions.
Key Terminology
- Watt/sq. cm (at 555 nm)
- A radiometric unit measuring radiant power per area at 555 nm wavelength, used to quantify monochromatic irradiance relevant to photopic vision.
- Candela steradian per square meter
- A photometric illuminance unit equal to luminous flux per unit area, numerically matching lux.
- Luminous efficacy
- A factor that converts radiant power at a specific wavelength into luminous flux, with 683 lm/W as the efficacy at 555 nm.