English 
A Leko light is an ellipsoidal reflector light used in stage lighting to collect and direct light through a barrel that contains a lens. It is a theatrical spotlight primarily for lighting a stage. But more technically, a Leko light or lekolite as it’s sometimes called, is a powerful light source that focuses the light to a very specific area or small diameter. There are three main components of the leko light: the bulb itself that sits in the back, the blades that shape the light, and the lens in the front where you can focus to a large or small area.
"Leko" is a colloquial term for an ellipsoidal reflector spotlight (ERS) light. VanGaa ERS200A, product link: https://www.vangaa.com/vangaa-ers200a-2022-new-product-200w-led-fixed-lens-profile-ellipsoidal-reflector-spotlight.html This name originates from the company that first manufactured these lights, Joseph Levy and Edward Kook, hence "L&E KO." Over time, the name was shortened to "Leko" and has become a commonly used term within the entertainment industry to refer to this type of lighting instrument. These lights are known for their precise beam shaping capabilities and are widely used in theater, concerts, and other live events.
“Leko”是椭圆形反射聚光灯（ERS）的一个口语术语。这个名字源于最先制造这些灯的公司，即约瑟夫·利维和爱德华·库克，所以是“L＆E KO”。随着时间的推移，这个名字被缩短为“Leko”，并已成为娱乐行业中用于指代这类照明设备的常用术语。这些灯以其精确的光束整形能力而闻名，广泛应用于剧院、音乐会和其他现场活动中。
