Title:
SPECTRAL ELEMENT ARRAY, IMAGING ELEMENT, AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/070305
Kind Code:
A1
Abstract:
This imaging element is provided with: a two-dimensional pixel array in which a plurality of pixels including photoelectric conversion elements are arranged in an array on a substrate; a transparent layer formed on the two-dimensional pixel array; and a two-dimensional spectral element array in which a plurality of spectral elements are arranged in an array either within or on the transparent layer. Each of the spectral elements includes a plurality of fine structures formed from a material having a higher refractive index than the refractive index of the transparent layer. The plurality of fine structures have a fine structure pattern. Light incident on each of the spectral elements is separated thereby in accordance with wavelength range into first deflected light, second deflected light, third deflected light, and fourth deflected light each having a different propagation direction. First pixels, second pixels, third pixels, and fourth pixels adjacent to each other and directly below each of the spectral elements detect each of the first deflected light, the second deflected light, the third deflected light, and the fourth deflected light.
Inventors:
MIYATA MASASHI (JP)
NAKAJIMA MITSUMASA (JP)
HASHIMOTO TOSHIKAZU (JP)
NAKAJIMA MITSUMASA (JP)
HASHIMOTO TOSHIKAZU (JP)
Application Number:
PCT/JP2019/039907
Publication Date:
April 15, 2021
Filing Date:
October 09, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H01L27/146; G02B5/20; G02B5/22; H04N9/07
Foreign References:
| JP2003243640A | 2003-08-29 | |||
| JP2014138142A | 2014-07-28 | |||
| JP2010178133A | 2010-08-12 |
Other References:
SELL, DAVID ET AL.: "Periodic Dielectric Metasurfaces with High-Efficiency, Multiwavelength Functionalities", ADVANCED OPTICAL MATERIALS, vol. 5, 2017, pages 1700645-1 - 1700645-7, XP055817577
SEIJI NISHIWAKITATSUYA NAKAMURAMASAO HIRAMOTOTOSHIYA FUJIIMASA-AKI SUZUKI: "Efficient colour splitters for high-pixel-density image sensors", NATURE PHOTONICS, vol. 7, March 2013 (2013-03-01), pages 240 - 246
MASASHI MIYATAMITSUMASA NAKAJIMATOSHIKAZU HASHIMOTO: "High-Sensitivity Color Imaging Using Pixel-Scale Color Splitters Based on Dielectric Metasurfaces", ACS PHOTONICS, March 2019 (2019-03-01), pages 1442 - 1450
DAVID SELLJIANJI YANGSAGE DOSHAYJONATHAN A. FAN: "Periodic Dielectric Metasurfaces with High-Efficiency, Multiwavelength Functionalities", ADVANCED OPTICAL MATERIALS, vol. 5, 2017, pages 1700645
See also references of EP 4044233A4
SEIJI NISHIWAKITATSUYA NAKAMURAMASAO HIRAMOTOTOSHIYA FUJIIMASA-AKI SUZUKI: "Efficient colour splitters for high-pixel-density image sensors", NATURE PHOTONICS, vol. 7, March 2013 (2013-03-01), pages 240 - 246
MASASHI MIYATAMITSUMASA NAKAJIMATOSHIKAZU HASHIMOTO: "High-Sensitivity Color Imaging Using Pixel-Scale Color Splitters Based on Dielectric Metasurfaces", ACS PHOTONICS, March 2019 (2019-03-01), pages 1442 - 1450
DAVID SELLJIANJI YANGSAGE DOSHAYJONATHAN A. FAN: "Periodic Dielectric Metasurfaces with High-Efficiency, Multiwavelength Functionalities", ADVANCED OPTICAL MATERIALS, vol. 5, 2017, pages 1700645
See also references of EP 4044233A4
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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