page_title: Anidolic lighting
section_title: Mirror systems
hierarchical_section_title: Anidolic lighting / Mirror systems
caption_attribution_description: A simple example of en:Anidolic lighting, with a zenithal collector and plain internal diffuser.
context_page_description: Anidolic lighting systems use anidolic optical components to light rooms. Light redirected by these systems does not converge to a focal point or form an image, hence the name.
  Anidolic lighting uses non-imaging mirrors, lenses, and light guides to capture exterior sunlight and direct it deeply into rooms, while also scattering rays to avoid glare. The human eye's response to light is non-linear, so a more even distribution of the same amount of light makes a room appear brighter.
  It is most challenging to effectively capture and redistribute of light on cloudy, overcast days, when the sunlight is diffuse.
context_section_description: Anidolic mirror lighting systems can be divided into three parts:
  daylight capture, usually with zenithal light collector
  optimal transmission of the light (via anidolic ceilings, light tubes, etc.)
  distribution of captured light to target areas inside the rooms
  Architectural design also require optimal integration into the building facade.
caption: Basic zenithal daylighting arrangement. An external parabolic or elliptical mirror captures zenithal daylight, and converges it, to let it pass through a narrow opening in the exterior wall. On the inside, two parabolic mirrors widen the beam to around 60°. The floor area next to the conventional window is lit by the window.
exif: {"Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS4 Windows", "Image DateTime": "2008:07:18 07:38:49", "Image ExifOffset": "164", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "302", "Thumbnail JPEGInterchangeFormatLength": "2687", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "600", "EXIF ExifImageLength": "376"}