Comparison Feron LB-10 14LED 2W 2700K E14 vs Osram LED Superstar Classic B40 6.5W 2700K E14

The type of bulb that the light bulb is equipped with.

— Transparent. Transparent flasks practically do not reduce the brightness of the light, but the light itself is sharper than from frosted lamps. They are considered optimal for lighting fixtures with transparent shades, as well as for crystal chandeliers and other similar fixtures, the design of which is designed for a beautiful play of light on corners and edges. In addition, in halogen lamps (see "Type"), other types of bulbs are practically not used — for a number of technical reasons.

— Matte. Frosted flasks have a soft glow — due to a slight decrease in brightness compared to transparent ones. They are recommended for use in lamps with frosted shades, as well as for lighting children's rooms: the light attracts the attention of small children, and it is safer to look at a frosted light bulb. Also note that non-coloured fluorescent lamps (see "Type") are, by definition, made opaque.

— Coloured. Flasks painted in a certain colour provide a glow of the corresponding shade. Usually, such lamps are used for decorative purposes, but other uses are possible — for example, for colour temperature correction in a photo studio. In addition, this category also includes the so-called. "black light lamps" — lamps that emit mainly ultraviolet light and very faintly glow in the visible range. Ult...raviolet from such lamps is relatively safe for humans, while it makes various substances and materials glow brightly. This effect is used both for entertainment and decorative purposes, and in quite practical areas of activity — chemistry, medicine, forensic science, etc.

The power consumed by the light bulb during normal operation. The lower this indicator, the more economical the model and the cheaper it will cost to operate. In traditional incandescent lamps, the brightness of the glow also depended on the power, however, different types of lamps are presented on the modern market, with different efficiencies. Therefore, it is possible to uniquely link the power consumption and brightness only in lamps of the same type (see above), and to compare different types of models, you need to use the LON analogue (see below).

A parameter that describes the brightness of the lamp compared to a general purpose lamp (LON — a conventional incandescent bulb). Simply put, an analogue of LON is the power of an incandescent lamp, which is equal in brightness to the model in question. For example, a 75W LON analogue means that the lamp glows as brightly as a 75W incandescent lamp.

This parameter appeared for the convenience of evaluating and comparing different types of lamps in terms of brightness. Data on the luminous flux say little to the average user, and it makes no sense at all to evaluate the brightness by power — different types and even different models of lamps of the same type can differ markedly in efficiency. On the other hand, many users are accustomed to dealing with incandescent lamps, and comparison with such a lamp is familiar and understandable to them. In addition, the LON analogue allows you to compare different types of lamps, and it can also be very convenient when replacing incandescent lamps with more economical ones: for example, if 100-watt lamps were used in the chandelier, then the new lamps must have an LON analogue of at least 100 W — otherwise they may be too dim.

The conditional "amount of light" produced by a light bulb in normal mode. The higher the luminous flux, the brighter the light and the more clearly the illuminated scene will be visible. Note that lumen values are used primarily for special purposes; in everyday life, the estimation of brightness by the analogue of LON is more popular (see above), and here the ratio is as follows:

— 40 W analogue LON corresponds to a brightness of 370 lm;
— 60 W — 550 lm;
— 75 W — 800 lm;
— 100 W — 1200 lm;
— 150 W — 1900 lm;
— 200 W — 2700 lm.

Note that the principle "the more the better" in the case of the brightness of light bulbs is not always applicable. And the point here is not only energy consumption: too bright light is harmful to the eyes, leads to rapid fatigue and psychological discomfort.

The service life of the light source claimed by the manufacturer is implied, during which the illuminator is able to generate the claimed brightness and temperature colour spectrum. It is believed that light-emitting diode (LED) bulbs have the longest service life — their working life can be 10,000 — 50,000 hours ( 50 years of operation), depending on the modification of the bulb. But this parameter cannot be regarded as a guarantee, since a lamp with an operating time of 25 years can work less, and maybe even more, than a lamp with a "life" of 30 or even 35 years. In second place are energy-saving fluorescent light bulbs that are capable of generating daylight — the service life of such is in the range of 2000 — 20,000 hours. The average service life of halogen bulbs is about 2000 — 4000 hours, but when the power supply is equipped with a soft start device, it can be almost doubled. In last place are classic incandescent bulbs, the service life of which is within 1000 hours.