{
  "patent_number": "US RE50690",
  "country": "US",
  "title": "How Recessed Wall Wash Lights Reduce Glare Using Angled Lenses",
  "original_title": "USRE50690E1 - Low glare wall wash light fixture",
  "summary": "A specialized recessed light fixture design that uses an angled lens and a unique kicker reflector to wash walls with light while minimizing direct glare for people in the room.",
  "what_it_does": "This patent describes a recessed light fixture designed to illuminate a wall evenly without creating harsh glare. It uses an LED module that is physically offset from the center of the fixture's aperture. A custom lens with a concave side facing the LED and a convex side facing the room is tilted at an oblique angle to redirect the light. Additionally, an internal kicker reflector with prismatic features sits near the edge of the fixture to catch and redirect light toward the wall, ensuring the light hits the target surface rather than shining directly into a person's eyes.",
  "what_it_does_not_cover": [
    "Does not cover standard downlights that emit light straight down without a wall-washing effect",
    "Does not cover fixtures that lack the specific combination of an offset LED and a tilted lens",
    "Does not cover light fixtures that use flat, non-curved lenses",
    "Does not cover lighting systems that rely on external dimmers or smart home software to control glare"
  ],
  "filed": "2023-09-14",
  "granted": "2025-12-09",
  "expires": null,
  "status": "active",
  "holder": "USAI LLC",
  "holder_url": "https://patentbrief.org/company/usai-llc",
  "inventors": [
    {
      "name": "Yi Yang",
      "url": "https://patentbrief.org/inventor/yi-yang"
    },
    {
      "name": "Robert Leiter",
      "url": "https://patentbrief.org/inventor/robert-leiter"
    }
  ],
  "times_cited": 0,
  "tags": [
    "consumer_electronics",
    "mechanical"
  ],
  "abstract": "A wall wash recessed light fixture has an enclosure, an aperture, an LED module, a tubular reflector, a lens, a trim element and a diffuser. The lens is disposed at an opening of the tubular reflector, has a concave surface facing the LED module and a convex surface facing the aperture, and has a principal axis aligned at an oblique angle Θ 1 relative to an optical axis of the LED module. An internal kicker reflector is offset from the optical axis of the LED module toward a second end of the light fixture, and is substantially parallel to a height axis (Z) and lateral axis (X) and faces a center axis of the aperture and. The trim element is disposed below the collimator assembly and at least partially in the opening of the ceiling. A first diffuser covers a first trim opening and is aligned at an oblique angle relative to the longitudinal axis (X).",
  "url": "https://patentbrief.org/patent/us/RE50690/sonicare-toothbrush",
  "markdown_url": "https://patentbrief.org/patent/us/RE50690/sonicare-toothbrush/md",
  "google_patents_url": "https://patents.google.com/patent/USRE50690",
  "relatedPatents": []
}