Under the same conditions of use, the total luminous flux emitted by the luminaire and the total luminous flux emitted by all light sources in the luminaire, also known as the luminous output ratio of the luminaire.

① Definition: is a low-pressure mercury vapor arc discharge lamp, it is in the gas discharge in the consumption of electrical energy is mainly converted into ultraviolet light outside the region of electromagnetic radiation, about 39% of the energy is directly converted into visible light, ultraviolet light outside the phosphor coating inside the lamp head, the ultraviolet energy is absorbed by the fluorescent material, which partially converted into visible light released:
② classification: according to the tube diameter (thickness) can be divided into: T4-12mm, T5-15mm, T8-25mm, T9-29mm, T10 fluorescent lamp, T10 fluorescent lamp.

①Classification: by lamp diameter: 5mm, 7mm, 9mm, 12mm, 14.5mm, 17mm;
②By lamp shape: 2U, 3U, 4U, 5U, 6U, spiral, bulb shape;
③ according to the socket: E27, E27, E27, E27, E27, E27
④ according to the combination of points: one-piece and split structure by: lamp head, capillary, circuit board composition.

Type of light source luminous efficiency | m / w color rendering index ra average life hours color temperature (K)
① incandescent lamp 1510010002800, quartz halogen lamp 251002000-40002850/4500;
② high-pressure mercury lamp 5045-5560003400/4000;
③ PL energy-saving lamp 858280002700/4200/6500;
④ quartz metal halide lamp 758280002700/4000/6500
⑤ Ceramic metal halide lamp 90-8565-929000/4500/5600
⑥ High-pressure sodium lamp 12023/400/5600
⑦Low pressure sodium lamp 200 strong yellow light 280001750;.
⑧ SL energy-saving lamps 508580002700/6500.
⑨ Ordinary fluorescent lamps 707080002700/6500;
⑩LED50-1508010W multi-color;

① luminous flux: the amount of light emitted by the light source per unit of time, unit: Lm (lumens);
② luminous intensity: the number of light flux per unit area, that is, the luminous flux divided by the area of the value obtained, used to indicate the brightness of a place, unit Lux (lux).
Illumination places: 20-~50L outdoor activities, workplaces: walk Kang, storerooms, stairwells, etc., 30-150L circulation places: bars, counters, duty rooms, clinics, shopping malls, etc., 100-200LX workplace: offices, classrooms, writing desks, beauty parlors, etc., 200-500lx simple vision requirements
Requirements: reading room, design institute, showroom, etc., 300~700Lx medium visual requirements: such as ballparks, drawing rooms, rough processing workshop, etc., 50~100Lx medium visual requirements: such as assembly workshops, small products workplace, etc., more than 100Lx more difficult to wait for a distinction …. Precise visual operation requirements