Patent Number: 7,709,797

Title: Detection device and image forming device

Abstract: There is a need for a detection device which has high photoreceptive sensitivity in a generally wide frequency region including the infrared region. Therefore, in the present invention, by utilizing a phenomenon in which electric field strength is enhanced by surface plasmon resonance in a negative dielectric constant medium, a detection device is provided which has an electromagnetic wave detection portion disposed at a position where the electric field strength is large.

Inventors: Sekiguchi; Ryota (Kawasaki, JP), Ouchi; Toshihiko (Sagamihara, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: G01J 5/02 (20060101)

Expiration Date: 5/04/12018