Title:
PHOTOELECTRIC CONVERSION ELEMENT, IMAGING ELEMENT, AND IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/039954
Kind Code:
A1
Abstract:
A photoelectric conversion element according to the present invention has a substrate and an optical element. The photoelectric conversion element uses a light source which emits light and receives reflected light that the light is reflected by an object. When the incident energy of the reflected light incident on the photoelectric conversion element is represented by I, an absorption coefficient of the reflected light at the substrate when an average wavelength of the light source is represented by λ is represented by α(λ), the incident energy of the reflected light at a predetermined region on a first surface is represented by A1, the incident energy of the reflected light at the predetermined region on the first surface when the photoelectric conversion element does not include the optical element is represented by A2, and the incident energy of the reflected light at a region moved in parallel from the predetermined region in the thickness direction of the substrate by a prescribed distance z is represented by B(z), A1 ≥ A2 is satisfied, and when assuming a distance z0 = ln(2)/α(λ), in the case of z = z0, a relational expression of 0.95 * exp(-α(λ) * z) ≤ B(z)/A ≤ 1.05 * exp(-α(λ) * z) holds.
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Inventors:
OOKUBO YU (JP)
NAKAGOME TOMOHIRO (JP)
NAKAGOME TOMOHIRO (JP)
Application Number:
PCT/JP2020/032568
Publication Date:
March 04, 2021
Filing Date:
August 28, 2020
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD (JP)
International Classes:
H04N5/369; G02B3/00; H01L27/146
Domestic Patent References:
| WO2018191539A1 | 2018-10-18 | |||
| WO2010064370A1 | 2010-06-10 |
Foreign References:
| JP2017120829A | 2017-07-06 | |||
| JP2011082329A | 2011-04-21 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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