What Is This Tool?
This converter allows you to change luminance measurements from lumen/square foot/steradian, a customary unit for brightness in larger outdoor or architectural settings, into candela/square centimeter, a smaller-scale unit commonly used for high-intensity displays and precise luminance specifications.
How to Use This Tool?
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Enter the luminance value in lumen/square foot/steradian
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Select lumen/square foot/steradian as the source unit
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Choose candela/square centimeter as the target unit
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Click convert to obtain the equivalent luminance value
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Use the output value for lighting or display design purposes
Key Features
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Converts luminance values between lumen/square foot/steradian and candela/square centimeter
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Uses a specific conversion factor for accurate translation of brightness units
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Supports measuring brightness for both large outdoor displays and small light-emitting surfaces
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Browser-based, easy to use, requiring no downloads
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Ideal for lighting designers, display engineers, and photometric calibration experts
Examples
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10 lumen/square foot/steradian converts to approximately 0.01076391 candela/square centimeter
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100 lumen/square foot/steradian converts to approximately 0.1076391 candela/square centimeter
Common Use Cases
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Specifying or measuring brightness for outdoor signs and billboards using customary U.S. area units
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Assessing architectural and lighting design for glare control and comfort in projects with foot-based units
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Calibrating photometers reporting luminance in non-SI customary units
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Evaluating brightness of small display elements such as LED indicators and camera viewfinders
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Describing luminance characteristics of CRT phosphors, OLED subpixels, and other display components
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Characterizing instrument panel and surgical lamp luminance with compact emitting areas
Tips & Best Practices
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Double-check unit selections when converting between customary and non-SI derived units
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Be mindful of the scale differences to correctly interpret very small converted numeric values
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Use calibrated instruments suitable for the specific unit scale of luminance measurement
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Leverage this converter to ensure consistency between large-area outdoor lighting data and small-scale display specifications
Limitations
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Differences in measurement scale and unit systems require careful attention to context
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Small conversion factors can produce very small numerical results needing sensitive instrumentation
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Precision depends on understanding the specific luminance applications and unit definitions to avoid misinterpretation
Frequently Asked Questions
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What does lumen/square foot/steradian measure?
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It measures luminance as luminous flux per unit area per steradian, indicating brightness emitted or reflected by a surface in a specific direction using customary U.S. area units.
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Why convert lumen/square foot/steradian to candela/square centimeter?
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Converting allows brightness data measured over larger areas in customary units to be expressed in smaller, precise units ideal for high-intensity displays and detailed engineering.
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Are lumen/square foot/steradian and candela/square centimeter SI units?
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No, lumen/square foot/steradian is a non-SI customary unit, and candela/square centimeter is a non-SI derived unit commonly used for specific luminance applications.
Key Terminology
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Lumen/square foot/steradian
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A non-SI luminance unit expressing luminous flux per unit area per unit solid angle, commonly used with customary U.S. area units.
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Candela/square centimeter
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A non-SI derived luminance unit expressing luminous intensity per projected surface area, suited for small emitting areas.
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Luminance
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A measure of brightness representing luminous intensity emitted or reflected from a surface in a given direction per unit area.