What does candela per square inch measure?

Candela per square inch quantifies the luminous intensity emitted or reflected from a surface per unit apparent area in a particular direction, commonly used in photometric and display engineering.

Why convert to lumen per square foot per steradian?

Converting to lumen per square foot per steradian allows brightness measurements to align with foot-based units common in signage, architectural lighting, and photometric instruments.

Are there limitations to this luminance conversion?

Yes, the conversion assumes uniform luminous intensity and measurement conditions, and differences in area units and calibration standards can affect accuracy.

How to Convert from Candela/square inch to Lumen/square foot/steradian?

Learn how to convert luminance measurements from candela per square inch to lumen per square foot per steradian using this easy-to-use online unit converter. Understand the definitions, uses, and conversion process for these units.

Candela/square inch

Lumen/square foot/steradian

Please check your input. It must be a valid numeric value.

Candela/square inch to Lumen/square foot/steradian Conversion Table

Candela/square inch	Lumen/square foot/steradian

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 inch to Lumen/square foot/steradian Conversion Table
Candela/square inch	Lumen/square foot/steradian

Explore More Luminance Units Converter

What Is This Tool?

This online converter allows users to change luminance values from candela per square inch to lumen per square foot per steradian. It helps translate brightness measurements used across different industries and measurement standards, making comparisons and calibrations straightforward.

How to Use This Tool?

Enter the luminance value in candela per square inch into the input field
Select candela/square inch as the source unit if required
Choose lumen/square foot/steradian as the target unit
Click the convert button to see the equivalent luminance value
Use the result for applications like display brightness, signage, or photometric calibration

Key Features

Converts luminance values between candela/square inch and lumen/square foot/steradian
Supports measurement units used in display technology, signage, and architectural lighting
Provides quick and accurate conversion based on defined unit relationships
Browser-based and easy to use without additional software
Helps align measurements across different regional unit systems

Examples

2 candela per square inch converts to 288 lumen per square foot per steradian
0.5 candela per square inch converts to 72 lumen per square foot per steradian

Common Use Cases

Specifying brightness for small displays such as CRTs and early flat-panel screens
Measuring brightness in instrument panels, automotive and avionics backlights
Assessing architectural lighting designs focusing on visual comfort and glare control
Calibrating photometers and luminance meters that report in customary non-SI units
Determining brightness levels of signs, billboards, and large outdoor displays

Tips & Best Practices

Ensure consistent measurement conditions when comparing luminance values
Account for the difference in area units (square inches versus square feet) during conversions
Use this converter to align units when working between different industries and geographic unit standards
Validate measurement device calibration to improve accuracy in photometric readings
Be mindful that the conversion assumes uniform luminous intensity across the area measured

Limitations

Conversion assumes uniform distribution of luminous intensity on the surface
Variations in measurement angles and standards can affect actual accuracy
Different area units and solid angle considerations require careful interpretation of results

Frequently Asked Questions

What does candela per square inch measure?: Candela per square inch quantifies the luminous intensity emitted or reflected from a surface per unit apparent area in a particular direction, commonly used in photometric and display engineering.
Why convert to lumen per square foot per steradian?: Converting to lumen per square foot per steradian allows brightness measurements to align with foot-based units common in signage, architectural lighting, and photometric instruments.
Are there limitations to this luminance conversion?: Yes, the conversion assumes uniform luminous intensity and measurement conditions, and differences in area units and calibration standards can affect accuracy.

Key Terminology

Candela per square inch: A luminance unit measuring luminous intensity per square inch of surface area in a given direction.
Lumen per square foot per steradian: A non-SI luminance unit expressing luminous flux per area per solid angle, equivalent to candelas per square foot.
Luminance: The measure of luminous intensity emitted or reflected from a surface per unit area in a specified direction.
Steradian: A unit measuring solid angles in three-dimensional space, important for describing distribution of light.

Quick Knowledge Check

Which area units are involved in candela/square inch and lumen/square foot/steradian?

Square meters and square feet

Square inches and square feet

Square centimeters and square inches

What is one use case for converting candela/square inch to lumen/square foot/steradian?

Measuring temperature differences

Specifying brightness for billboards and large outdoor displays

Calculating electrical resistance

What assumption is made in this luminance conversion?

Uniform luminous intensity over the surface area

Variable light source intensity

Different weighted angles

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