Watts vs lumens vs useful lumens/LED lens, which is more important?

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Because this is closely related to the lighting effect of the lamp. As a consumer, one of the most common problems is the comparison between lumens and wattage. Taking energy-saving lamps as an example, we can see wattages and lumens on the outer packaging of the bulb. The former is the electrical power consumed by the bulb. Although it has a certain relationship with the brightness (luminous flux) of the lamp, it is not a direct determining factor. Lumen is the international unit of luminous flux, which directly reflects the total amount of visible light emitted by the bulb, which can be understood as the brightness of the light. In short, the higher the lumen, the more light the light source emits, and it can illuminate a larger area or a farther distance under the same conditions. Of course, the lighting effect is also related to many other factors, including useful lumens. This article mainly focuses on watts, lumens, useful lumens, and the relationship between them(watts vs lumens vs useful lumens). At the same time, we will also explain which factor we should pay more attention to in practical applications.","name":"Watts vs lumens, Lumens vs useful lumens | ZGSM","@id":"#richSnippet","isPartOf":{"@id":"#webpage"},"image":{"@id":"https:/wp-content/uploads/2024/07/Watts-vs-lumens.jpg"},"inLanguage":"en-US","mainEntityOfPage":{"@id":"#webpage"}}]} document.documentElement.classList.remove( 'no-js' ); window._wpemojiSettings = {"baseUrl":"https:\/\/s.w.org\/images\/core\/emoji\/15.0.3\/72x72\/","ext":".png","svgUrl":"https:\/\/s.w.org\/images\/core\/emoji\/15.0.3\/svg\/","svgExt":".svg","source":{"concatemoji":"https:\/\/www.zgsm-china.com\/wp-includes\/js\/wp-emoji-release.min.js?ver=6.7"}}; /*! 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