What lamp saves the most electricity?

Is it about saving electricity for lamps or bulbs?

Let's talk about light bulb energy saving:

Incandescent lamp is an ordinary light bulb with tungsten wire inside and glass shell, which has low luminous efficiency. It has been eliminated at present, but it is still on the market. Life is short.

Energy-saving lamps are made into two-pronged or three-pronged (or five-pronged) thin tubes coated with fluorescent powder, which has high luminous efficiency and is widely used in China at present. Longevity

LED lamp is composed of many small LEDs arranged in the lamp tube, usually low-voltage DC. (AC 220 V plus rectification is also acceptable). It is not enough to use only one LED for lighting. Many LEDs can be made into tubes or balls for lighting, with the longest service life.

Say three kinds of lights, and you will know which one to choose!

The energy saving of lamps depends on the reflective curve (hyperbola, parabola, bat curve, etc.) of such lamps. ), and then you can calculate. Some lights with different colors can't provide curves at all, so they can't be calculated. Because it costs money to make a curved lamp, those small manufacturers are unwilling to pay. Then you can only choose the lights by feeling.