公开(公告)号：US20210318611A1

公开(公告)日：2021-10-14

申请号：US17226721

申请日：2021-04-09

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Soh UENOYAMA ,  Hiroki KAMEI ,  Kazuyoshi HIROSE

IPC: G03F7/00 ,  G02B27/00

Abstract: A method for producing an optical element includes: forming a resist layer on a main surface of a substrate; forming a pattern region in the resist layer; forming a groove; forming a dielectric layer covering the pattern region; and forming an optical functional portion. The pattern region is formed in the resist layer. The groove is formed in a portion corresponding to a periphery of the pattern region as viewed in a direction orthogonal to the main surface. A dielectric is deposited to form the dielectric layer. After the dielectric layer covering the pattern region is formed, the resist layer is removed to form the optical functional portion at a position where the pattern region is disposed on the main surface. The optical functional portion is made of the dielectric.

公开(公告)号：US20210240052A1

公开(公告)日：2021-08-05

申请号：US17053130

申请日：2019-05-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Soh UENOYAMA ,  Kazuyoshi HIROSE ,  Yoshitaka KUROSAKA ,  Hiroshi TANAKA

IPC: G02F1/29

Abstract: A reflective dynamic metasurface of an embodiment comprises a structure enabling phase modulation in each of pixels constituting at least a one-dimensional array. The metasurface includes: a laminated structure body having a transparent conductive layer and a dielectric layer; a first metal film on one surface of the laminated structure body; a second metal film on the other surface of the laminated structure body; and a drive circuit controlling voltage applied between the first and second metal films. The first and second metal films are arranged to sandwich the pixels. The first metal film is arranged to expose a pair of window regions in one pixel, and the second metal film includes partial metal films defining the shape of each pixel and separated from each other. The drive circuit individually controls the potential of each partial metal film, thereby modulating the phase of the input light for each pixel.

公开(公告)号：US20210055456A1

公开(公告)日：2021-02-25

申请号：US17052249

申请日：2019-04-11

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Soh UENOYAMA ,  Yuu TAKIGUCHI

IPC: G02B1/02 ,  G02B1/00 ,  C03C17/09 ,  C03C15/00 ,  H01Q1/22

Abstract: The present disclosure relates to a metasurface structural body or the like having a structure for achieving desired optical characteristics. The metasurface structural body includes a base member having a first surface and a second surface opposing each other, and a plurality of antennas as a plurality of fine structures arranged along the first surface. The base member has a base portion and an adjacent portion. The antennas each has a first refractive index and an antenna end surface constituting a part of the first surface. The adjacent portion is provided such that a part thereof is positioned between the antennas, the adjacent portion having a second refractive index different from the first refractive index and an adjacent-portion end surface constituting a remaining part of the first surface. The antenna end surfaces and the adjacent-portion end surface form a flat surface as the first surface.

公开(公告)号：US20180074226A1

公开(公告)日：2018-03-15

申请号：US15701537

申请日：2017-09-12

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoshiro NOMOTO ,  Yoshitaka KUROSAKA ,  Kazuyoshi HIROSE ,  Takahiro SUGIYAMA ,  Soh UENOYAMA

IPC: G02B1/00 ,  G02B5/00 ,  G02F1/19

CPC classification number: G02B1/002 ,  G02B5/008 ,  G02B2207/101 ,  G02F1/19 ,  G02F2202/30

Abstract: A metasurface includes a substrate including a light input surface into which input light is input and a light output surface facing the light input surface, and a plurality of V-shaped antenna elements disposed on the light output surface of the substrate and including a first arm and a second arm continuing on one end of the first arm. The each of the V-shaped antenna elements has a thickness in a range of 100 nm to 400 nm.