Canon Patent For Foveon Sensor With Anti-Reflection Film

Egami has discovered a new patent filed by Canon. The new patent describes a a 3 layer, Foveon-like sensor with an insulator film applied.

There are similar patents showed up in the past and this is the third Canon patent about a Foveon-like sensor. See here and here.

The film mentioned in the patent helps to reduce reflection and flares. See the patent details below.

Canon Patent For Foveon Sensor With Anti-Reflection Film

• Patent Publication No. 2014-130890
  • Publication date 2014.7.10
  • Filing date 2012.12.28
• Multilayer sensor drawback of
  • G is light, the image quality is degraded and reflected by the surface of the layer between the G and B layer, re-enters the B layer
• Canon patents
  • The provision of the dielectric film and the insulating film as an anti-reflection film
  • First insulating layer, B layer, a dielectric film, insulating film, dielectric film, G layer, a dielectric film, insulating film, insulating film, dielectric film, the R layer
  • By increasing the thickness of the dielectric film, to suppress the multiple reflection
  • The dielectric film is between the G layer and B layer, the reflectance with respect to G is lower than B

via Egami