Patent ID: 7502178

Claim:
An imaging device, comprising: an opaque planar sheet; a first arrangement of pinholes in the sheet the pinholes lying approximately along first arcs of concentric Fresnel zones rings; the position of the first arcs being determined by Fresnel diffraction to focus a first wavelength, with a first transmissivity and a first resolution, at a first focal length over a first field of view; and a second arrangement of pinholes in the sheet, the pinholes lying approximately along second arcs of concentric Fresnel zone concentric rings; the position of the second arcs being determined by Fresnel diffraction to focus a second wavelength, with a second transmissivity and a second resolution, at a second focal length over a second field of view; and wherein at least one of the first focal length, the first wavelength, the first transmissivity, the first resolution and the first field of view is different from the second focal length, the second wavelength, the second transmissivity, the second resolution and the second field of view.