Candela per Square Inch to Lumen per Square Foot Steradian Conversion
Convert between Candela per Square Inch and Lumen per Square Foot Steradian quickly and accurately.
How to Convert Candela per Square Inch to Lumen per Square Foot Steradian
Conversion Formula
Example
Convert 15 cd/in² to lm/(ft²·sr):
Unit Information
Learn about the luminance units you're converting between
Candela per Square Inch
cd/in²
Definition
The Candela per Square Inch is an imperial unit of luminance, representing the luminous intensity per unit area using the square inch as the area unit. It is used for measuring very bright light sources and small-area displays.
History/Origin
This unit was developed for applications requiring precise measurement of small, bright light sources where square inches provide a more appropriate area reference. It is particularly useful in electronics and display technology where component sizes are measured in inches.
Current Use
Commonly used in electronics manufacturing, small display technology, and precision lighting applications. Essential for measuring LED arrays, small screens, and compact light sources where square inch measurements are standard.
Multiplier
1550.003
Offset
0
Lumen per Square Foot Steradian
lm/(ft²·sr)
Definition
The Lumen per Square Foot Steradian is an imperial unit of luminance that shows the relationship between luminous flux, area, and solid angle using square feet. It is equivalent to 10.7639104167 candela per square meter.
History/Origin
This unit was developed for use in countries employing imperial measurements, providing a way to express luminance in terms of square feet while maintaining the relationship to luminous flux and solid angle. It bridges metric and imperial systems in lighting applications.
Current Use
Used in lighting design and engineering in countries using imperial units, particularly in architectural lighting and display specifications. Common in applications where square footage is the standard area measurement and precise luminance control is required.
Multiplier
10.764
Offset
0
Candela per Square Inch to Lumen per Square Foot Steradian Conversion Table
| Candela per Square Inch [cd/in²] | Lumen per Square Foot Steradian [lm/(ft²·sr)] |
|---|---|
| 1 cd/in² | 144 lm/(ft²·sr) |
| 10 cd/in² | 1440 lm/(ft²·sr) |
| 25 cd/in² | 3600 lm/(ft²·sr) |
| 50 cd/in² | 7200 lm/(ft²·sr) |
| 100 cd/in² | 14400 lm/(ft²·sr) |
| 0 cd/in² | 0E+0 lm/(ft²·sr) |
| -10 cd/in² | -1440 lm/(ft²·sr) |
| -40 cd/in² | -5760 lm/(ft²·sr) |
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