Lumen per Square Foot Steradian to Lumen per Square Meter Steradian Conversion
Convert between Lumen per Square Foot Steradian and Lumen per Square Meter Steradian quickly and accurately.
How to Convert Lumen per Square Foot Steradian to Lumen per Square Meter Steradian
Conversion Formula
Example
Convert 15 lm/(ft²·sr) to lm/(m²·sr):
Unit Information
Learn about the luminance units you're converting between
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
Lumen per Square Meter Steradian
lm/(m²·sr)
Definition
The Lumen per Square Meter Steradian is a unit of luminance that explicitly shows the relationship between luminous flux, area, and solid angle. It is dimensionally equivalent to candela per square meter and provides insight into the geometric aspects of light measurement.
History/Origin
This unit was developed to emphasize the relationship between luminous flux, surface area, and solid angle in luminance measurements. It provides a more detailed understanding of how light is distributed and measured in three-dimensional space.
Current Use
Used in advanced photometry and lighting calculations where the relationship between flux, area, and solid angle is important. Common in research applications and detailed lighting analysis where understanding the geometric aspects of light distribution is crucial.
Multiplier
1
Offset
0
Lumen per Square Foot Steradian to Lumen per Square Meter Steradian Conversion Table
| Lumen per Square Foot Steradian [lm/(ft²·sr)] | Lumen per Square Meter Steradian [lm/(m²·sr)] |
|---|---|
| 1 lm/(ft²·sr) | 10.76391 lm/(m²·sr) |
| 10 lm/(ft²·sr) | 107.639104 lm/(m²·sr) |
| 25 lm/(ft²·sr) | 269.09776 lm/(m²·sr) |
| 50 lm/(ft²·sr) | 538.195521 lm/(m²·sr) |
| 100 lm/(ft²·sr) | 1076.391042 lm/(m²·sr) |
| 0 lm/(ft²·sr) | 0E+0 lm/(m²·sr) |
| -10 lm/(ft²·sr) | -107.639104 lm/(m²·sr) |
| -40 lm/(ft²·sr) | -430.556417 lm/(m²·sr) |
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