Conceptual Interpretation of LED Lamps and LED Light Sources

At present, under the background of “energy saving and emission reduction” in the world, LED as a new type of light source has a wide range of applications in various fields. It is the focus of the current lighting electrical industry to develop standards and evaluate the performance quality of LED lighting products. LEDs come in a variety of forms, including LED packages, LED arrays, LED modules, LED lights, etc., and the combination of them is different, including standard lamp head, built-in, stand-alone and monolithic, which also form different maintenance. Types such as light source replaceable and non-replaceable, maintainable and non-maintainable. In addition, the dazzling design and style are difficult to define by traditional differentiation. Especially in the definition of LED lamps and LED lights, some vague and even wrong concepts have caused confusion in the industry. It will have an adverse impact on the development of the LED lighting industry and the development of standards and testing.

1. Definition of light source related to LED

Whether it is an LED array, an LED module or an LED light, it is a light source.

(1) Lamp: A light source made to produce optical radiation (usually visible).

Note: This term is also sometimes used for certain types of illuminators.

(2) Light Emitting Diode (LED): A pn junction semiconductor device that emits incoherent light when forward biased. The emitted spectrum may be in the ultraviolet, visible or infrared wavelength region.

(3) LED die: A small piece of luminescent semiconductor material that is mounted on a given functional LED line.

(4) LED array or module: LED package (component) or wafer component on a printed circuit board or substrate, possibly with optical components, additional thermal, mechanical and intended connection to the LED driver load Side electrical interface. The unit does not contain a power supply and a standard base. The device cannot be directly connected to the branch circuit. As shown in Figure 1.

(5) LED package: A component of one or more LED wafers including wire bonds or other types of electrical connectors, possibly with optical components, thermal, mechanical, and electrical interfaces. The unit does not include a power supply and a standard base. The device cannot be directly connected to the branch circuit. as shown in picture 2.

(6) LED driver: A device containing a power supply and an LED control circuit for the purpose of operating an LED package (component), or an LED array (module) or LED.