Title:
PHOTO-DETECTION APPARATUS
Document Type and Number:
Japanese Patent JP2018096985
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a photo-detection apparatus which can provided information relevant to the coherence of incident light without requiring complicated operation.SOLUTION: The photo-detection apparatus comprises a light-shielding film 9, an optically-coupled layer 12, a photodetector 10 and an optical system 17. In the light-shielding film, a plurality of light-transmitting regions 9a and a plurality of light-shielding regions 9A are alternately arranged in at least a first direction. The optically-coupled layer faces the light-shielding film and includes a grating that propagates light in the first direction. The photodetector includes a plurality of first photo-detection cells 10a and a plurality of second photo-detection cells 10A that are arrayed on an imaging area. The optical system is arranged between the optically-coupled layer and the photodetector. An image of light transmitted by parts of the optically-coupled layer that face each of the light-transmitting regions and light-shielding regions is enlarged or reduced by the optical system and formed on a corresponding one of the first and second photo-detection cells.SELECTED DRAWING: Figure 8
Inventors:
NISHIWAKI SEIJI
NARUMI KENJI
ADACHI YASUHIKO
NARUMI KENJI
ADACHI YASUHIKO
Application Number:
JP2017233160A
Publication Date:
June 21, 2018
Filing Date:
December 05, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
G01J9/00; G01N21/17
Domestic Patent References:
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Foreign References:
| US20140078349A1 | 2014-03-20 |
Attorney, Agent or Firm:
Seiji Okuda
Osamu Kita
Michi Kajitani
Akiko Miyake
Hidetaka Okabe
Tohru Kawakita
Yu Tanaka
Murase Nariyasu
Osamu Kita
Michi Kajitani
Akiko Miyake
Hidetaka Okabe
Tohru Kawakita
Yu Tanaka
Murase Nariyasu
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