{"id":7732,"date":"2026-04-02T11:55:20","date_gmt":"2026-04-02T09:55:20","guid":{"rendered":"https:\/\/www.bioscabotey.es\/?p=7732"},"modified":"2026-04-02T12:16:05","modified_gmt":"2026-04-02T10:16:05","slug":"louis-poulsen-ph-system","status":"publish","type":"post","link":"https:\/\/www.bioscabotey.es\/en\/louis-poulsen-ph-system\/","title":{"rendered":"Louis Poulsen celebrates the centenary of the iconic PH System"},"content":{"rendered":"

\"Louis\"Poul<\/p>\n

In 1924, Sophus Kaastrup-Olsen, then head of Louis Poulsen, met Poul Henningsen<\/strong>: architect, designer and an endlessly curious mind. From that encounter came an idea that would change lighting forever. The goal was clear: to create glare-free light<\/strong>, able to coexist with both space and people. Two years later, in 1926, that vision took shape in a system that remains a reference today: the PH System<\/strong><\/a>.<\/p>\n

Henningsen didn\u2019t just design a lamp, he came up with a whole logic. A structure based on three shades working together to control light<\/strong>. The result: soft, balanced and fully functional lighting. A solution that still feels strikingly relevant a century later.<\/strong><\/p>\n

The mathematics behind light<\/strong><\/h2>\n

At the core of the PH System lies the logarithmic spiral<\/strong>, a geometry found in nature, from seashells to plant growth. By shaping the shades according to this curve, Henningsen managed to layer the light, removing harsh contrasts and preventing glare.<\/p>\n

Each shade serves a precise function<\/strong>: the top one emits the main light, the middle one redirects and softens it, and the lower one shields the eye. Together, they create a warm and natural light, close to daylight yet with the intimacy of candlelight. A balance that\u2019s still hard to achieve today.<\/p>\n

\"\"<\/p>\n

All PH lamps follow a very specific naming system: PH 4\/3, PH 3\/2\u2026
The first number refers to the diameter of the top shade in decimetres. The second defines the combination of lower shades.<\/p>\n

This system goes beyond a technical detail, it\u2019s part of the design\u2019s DNA. It helps you understand scale, proportion and light behaviour before even switching the lamp on.<\/p>\n

A design that still leads the way<\/strong><\/h2>\n

Talking about the PH System means talking about one of the key milestones in lighting design. It\u2019s not just about aesthetics, but about how light shapes the way we live in spaces.<\/p>\n

\"\"Today, this system remains a go-to reference for architects, interior designers and design lovers looking for coherent, long-lasting and well-thought-out solutions.<\/p>\n

At BioscaBotey, Poul Henningsen\u2019s legacy is still very much alive.<\/p>\n

Visit us<\/strong><\/a> and discover the PH System and other iconic Louis Poulsen lamps at our store on C\/Princesa, 52 (Barcelona). See you there!<\/p>\n

\"\"<\/p>\n

<\/p>","protected":false},"excerpt":{"rendered":"

Louis Poulsen celebrates 100 years of the PH system lighting design, a revolutionary system designed by Poul Henningsen in 1926.<\/p>\n","protected":false},"author":2,"featured_media":7763,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[67],"tags":[],"class_list":["post-7732","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-index"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/www.bioscabotey.es\/wp-content\/uploads\/2025\/01\/PH-CENTENARY-LOUIS-POULSEN-BIOSCABOTEY.jpg","_links":{"self":[{"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/posts\/7732","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/comments?post=7732"}],"version-history":[{"count":25,"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/posts\/7732\/revisions"}],"predecessor-version":[{"id":7765,"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/posts\/7732\/revisions\/7765"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/media\/7763"}],"wp:attachment":[{"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/media?parent=7732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/categories?post=7732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bioscabotey.es\/en\/wp-json\/wp\/v2\/tags?post=7732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}