Patent ID: 7456384

Claim:
A method for acquiring physical information using a device for detecting a physical distribution for a predetermined purpose on the basis of unit signals, the device including, as unit components, a detecting part for detecting an electromagnetic wave and a unit signal generating part for generating a corresponding unit signal on the basis of the quantity of the electromagnetic wave detected by the detecting part and outputting the unit signal, and the unit components being disposed on the same substrate in a predetermined order; wherein the detecting part includes a stacked member having a structure in which a plurality of layers having different refractive indexes between the adjacent ones and each a predetermined thickness is stacked, the stacked member being provided on the incident surface side to which the electromagnetic wave is incident and having the characteristic that a predetermined wavelength region component of the electromagnetic wave is reflected, and the reminder is transmitted; and the transmitted wavelength region component transmitted through the stacked member is detected by the detecting part, and the physical information for a predetermined purpose is acquired on the basis of the unit signal of the transmitted wavelength region component obtained from the unit signal generating part wherein the stacked member is not provided on the incident surface side to which the electromagnetic wave is incident in a detecting part other than the detecting part for the transmitted wavelength region component so that the reflected wavelength region component is detected by the other detecting part, thereby obtaining physical information for a second predetermined purpose on the basis of a unit signal of the reflected wavelength region component obtained from the unit signal generating part.