Patent ID: 8446497

Claim:
A multi-spectrum sensing device, comprising at least one top layer and one bottom layer, wherein said top layer comprises sensing pixels for sensing a first group of colors, said bottom layer comprises sensing pixels for sensing a second group of colors, and at least one of the top and bottom layers comprises sensing pixels for sensing at least two or more spectra, wherein: a lower layer senses a color having a wavelength longer than the wavelength of a color sensed at a corresponding position in a layer upper to the lower layer, and a spectrum of a color sensed in a lower layer is orthogonal to total spectra of colors sensed at corresponding positions in all layers upper to the lower layer within a spectral space of visible light, and wherein a spectrum of each of colors sensed in the bottom layer is orthogonal to the total spectrum of a color sensed at a corresponding position in all layers upper to the bottom layer either within a spectral space of visible light or a composite spectral space of visible light and infrared light.