What is the luminous flux of an electronic fluorescent lamp, and how is it different from the original optical transmission?

The life of an electronic fluorescent lamp is generally longer than that of an incandescent lamp, so the brightness of the final lamp will also decrease.

Because of this, electronic fluorescent lamps have the initial luminous flux and average luminous flux, and the average luminous flux is the measurement standard for the 40% life of the lamp.

Note: Decorating and color bulbs have no luminous flux because they are not light sources, just for decoration.