The Difference Between ANSI Lumens and Lumens
The Difference Between ANSI Lumens and Lumens GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Home Theater & Entertainment > TV & Displays
One important distinction is lumens measure light as it's emitted directly from its source. Lumens are therefore essential when selecting products like light bulbs. While the common wisdom is to shop for light bulbs based on wattage, it's better instead to look at lumens, or better yet, lumens compared to wattage. It will tell you how efficient the bulb is at converting electricity to light. For example, to provide the same light output (lumens), LED bulbs consume about one-tenth of the wattage compared to older incandescent bulbs.
But other conditions include the use of a matte screen, a limitation on the amount of light reflected off it, and the use of 16:9 dimensions for the projection. So the most crucial difference is that the ANSI lumen standard was designed to measure the output of projectors.
The Difference Between ANSI Lumens and Lumens
Overview of this measurement of visible light
By Aaron Peters Aaron Peters Writer Villanova University Aaron Peters is a writer with Lifewire who has 20+ years experience troubleshooting and writing about consumer and business technology. His work appears in Linux Journal, MakeUseOf, and others. lifewire's editorial guidelines Updated on March 16, 2022 Tweet Share Email Tweet Share Email TV & Displays Samsung Projectors Antennas HDMI & Connections Remote Controls The lumen is a measure of light defined by the International System of Units (SI). It describes the output of devices that emit light visible to the human eye. While lumens pertain to all light-emitting objects, ANSI lumens are a slightly different way of measuring light specific to projectors.What Is a Lumen
Lumens measure the volume of light coming from a given source. While the newest "official" definition of a lumen is highly technical, it's easier to understand the slightly older meaning, circa 2018. It describes one lumen as the amount of light you'd get unobstructed from one common wax candle (this measure is called a candela). It's an oversimplification. For us non-scientists, it's good enough for... well, non-scientist work.One important distinction is lumens measure light as it's emitted directly from its source. Lumens are therefore essential when selecting products like light bulbs. While the common wisdom is to shop for light bulbs based on wattage, it's better instead to look at lumens, or better yet, lumens compared to wattage. It will tell you how efficient the bulb is at converting electricity to light. For example, to provide the same light output (lumens), LED bulbs consume about one-tenth of the wattage compared to older incandescent bulbs.
What Is an ANSI Lumen
ANSI lumens are similar to SI lumens as they're both measures of light output. However, ANSI lumens are generally considered more accurate, as the standard includes some specific conditions for measurement. When measuring ANSI lumens, the space is assumed to be 25°C, the source will be emitting a specific white light, and the result is based on an overall average of 9 measurements from different points.But other conditions include the use of a matte screen, a limitation on the amount of light reflected off it, and the use of 16:9 dimensions for the projection. So the most crucial difference is that the ANSI lumen standard was designed to measure the output of projectors.