It is equivalent to the brightness of nearly 4 fluorescent lamps emitted by a big hole in the matchbox.

Introduction:

Lumens are units of luminous flux. For a point light source with luminous intensity of 1 Candeira (cd), the luminous flux per unit solid angle (1 sphericity) is "1 lumen". English abbreviation (lm). A 40-watt incandescent lamp has a luminous flux of 340 lumens at 220 volts.

Projectors generally use lumens to express their luminous brightness, and the commonly used lumens of projectors are between 1000-4000 lumens. Home projector generally does not exceed 2500 lumens. Educational and public projectors are generally around 5000 lumens. Digital projectors used in cinemas are generally above 10000 lumens. This product is not a civilian product and has little contact. Common household and commercial projectors include LCD and DLP. There is a trend towards DLP.

Lumens are not intuitive when expressed by data, which can refer to people's subjective feelings.