Hamre, Schumann, Mueller & Larson, P.C.
Imaging device with columnar or plate-like transparent refractive index layers
An imaging photodetection device (4) includes: a plurality of photodetectors (6) that are arrayed on a substrate (5) at least along a first direction; a transparent low refractive index layer (12) that is formed above the plurality of photodetectors; and a plurality of transparent high refractive index sections (13) that are embedded in the transparent low refractive index layer along the first direction. On a cross-section of the transparent high refractive index sections orthogonal to the substrate and along the first direction, central axes (14) of the transparent high refractive index sections are bent stepwise. Light that enters the transparent low refractive index layer and the transparent high refractive index section passes therethrough to be separated into 0th-order diffracted light, 1st-order diffracted light, and −1st-order diffracted light. Thereby, improvement in the efficiency of light utilization and pixel densification can be realized.
Panasonic Corporation
G H H H H
G02B H01L H01L H04N H01L
inventional additional inventional additional additional
Masa-aki Seiji Masao Kazuya Shin-ichi
Suzuki Nishiwaki Hiramoto Yonemoto Wakabayashi