公开(公告)号：US20210387469A1

公开(公告)日：2021-12-16

申请号：US17309325

申请日：2019-11-21

Applicant: SONY GROUP CORPORATION

Inventor： TUO ZHUANG

IPC: B42D25/333 ,  B41M3/14 ,  B42D25/378

Abstract: A device and a method that achieve a watermark that can be easily recorded and does not significantly impair the appearance of a printed matter are provided. A watermark recording unit (214) that records watermark dots having a color having a small difference from an area color of an area in which a watermark is recorded, and a watermark recording mode determination unit (213) that determines a color of the watermark dots are included. The watermark recording mode determination unit (213) determines a color of the watermark dots in such a way that a wavelength difference Δλ, which is a difference between a color wavelength of the watermark dots and an area color wavelength of a recording area of the watermark dots, is less than a wavelength resolution of human eye. Moreover, the color of the watermark dots is determined in such a way that the wavelength difference Δλ is equal to or higher than a wavelength resolution of a spectroscopic camera (hyperspectral camera) (141) that captures an image for watermark analysis.

公开(公告)号：US20230090261A1

公开(公告)日：2023-03-23

申请号：US17759492

申请日：2021-01-25

Applicant: SONY GROUP CORPORATION

Inventor： TUO ZHUANG

IPC: G01J3/18 ,  G01J3/02

Abstract: A modulator (300) according to the embodiment is a modulator provided between a diffraction grating (944) and an image sensor (946), receives a light ray directed to the image sensor (946) from the diffraction grating (944), and changes a travel direction of the light ray emitted toward the image sensor (946) so as to bend a recording direction of a diffraction image for each wavelength of the light ray on a light receiving surface of the image sensor (946).

公开(公告)号：US20220229213A1

公开(公告)日：2022-07-21

申请号：US17595611

申请日：2020-05-18

Applicant: SONY GROUP CORPORATION

Inventor： TUO ZHUANG ,  GUENTER TROLL ,  ALEXANDER GATTO

IPC: G02B5/18 ,  G01J3/18

Abstract: An imaging region of an image sensor is used more efficiently. A diffraction element (100) according to the embodiment includes a grating pattern, in which according to a position of light input to the diffraction element, the position being from a center of the diffraction element, an image forming position of diffracted light corresponding to the position of each wavelength is adjusted by adjusting a shape of the grating pattern at the position