The fluorescent lamp is mainly a low-pressure mercury vapor arc discharge lamp, and the electric energy consumed in the gas discharge is mainly converted into ultraviolet light.
range of electromagnetic radiation (approximately 63% is converted to class C ultraviolet radiation between 254-185nm), approximately 3% of the energy is directly converted into visible light in the discharge, the main wavelengths of which are 405nm (blue-violet light), 436nm (blue light) , 456nm (green light) and 577nm (yellow light). The ultraviolet radiation is irradiated on the phosphor coating on the inner wall of the lamp tube, and the energy of the ultraviolet light is absorbed by the fluorescent material, and part of it is converted into visible light and released. The visible light emitted in a typical fluorescent lamp (both from the phosphor coating and directly during discharge) is approximately 28% of the energy input into the lamp. The optical performance of fluorescent lamps mainly depends on the geometric dimensions of the lamp tube, that is, the length and diameter, the type and pressure of the filling gas, the coating of the phosphor and the manufacturing process. The color temperature of fluorescent lamps is divided into:
Warm color series: such as /29 /827 /830 /927 /930 and etc, can create warm splendor, narrow the distance space, and give a relaxed and comfortable lighting feeling. When used, it is generally mixed with incandescent lamps and is not suitable for mixing with natural light.
Middle tone series: such as /33 /835 /840 /927 /940 and etc. When neutral colors are used, bright white light can be perfectly combined with natural light, generally used for natural light exposure or a cooler atmosphere Space.
Cool tone series: such as /54 /850 /865 /950 /965 and etc, can create tranquility, increase the distance and space, and give people a lively lighting feeling. When using, it is generally used for color comparison or places with particular emphasis on cool color effects.