As an important parameter of projectors, the lumen plays an important role in the projection image. In this guide, we will introduce the lumens and ANSI lumens conversion.
Lumens vs ANSI lumens Conversion
What Is Lumen and ANSI Lumen?
ANSI lumens are given under a 9-point test, which is widely applied to projectors in the US and Europe. When it refers to the lumen, it is a measurement of the luminous flux of a light source.
There are many lumen units on the market. You may see light source lumens, LED lumens, and ISO lumens. Light source lumens are given by measuring the brightness of the light source, while LED lumens are seen in some LED projector sellers. ISO lumens are given based on ISO21118.
If the projector is fixed, the lumens figures based on different brightness standards vary greatly. Their relations can be like that: Light source lumens> LED lumens>ANSI lumens> ISO lumens. That is to say, the figures of light source lumens and LED lumens are greater than ANSI lumens and ISO lumens.
Recently, China Video Industry Association released a new standard for projector brightness, CVIA lumens. Mainstream Chinese projector suppliers have replaced ANSI lumens with CVIA lumens for their projectors. According to the public data change, the CVIA lumens value is nearly half of ANSI lumens.
How to Convert Projector Lumens?
The conversion rate between ANSI lumens and ISO lumens is 1: 0.8, while the conversion rate between ANSI lumens and LED lumens is 1: 2.4. You can just use this projector lumens converter tool to convert different lumen units.
It is worth noting that lumen figures under different measurement standards can never be accurately converted. The conversion result is an approximated figure for reference.