公开(公告)号：US20220287585A1

公开(公告)日：2022-09-15

申请号：US17765678

申请日：2020-09-30

Applicant: HOYA CORPORATION

Inventor： Tetsu HIRAYAMA

IPC: A61B5/06 ,  A61B8/12

Abstract: Pliability of a tube is ensured while preventing deformation of the tube, occurrence of air leakage, and the like. An endoscope includes an insertion portion and a tube arranged inside the insertion portion. The insertion portion includes a bending section that is bendable based on an operation, a distal tip connected to a distal tip of the bending section, and a flexible tube portion that is bendable by external force independent of the operation. The tube includes an inner layer and an outer layer formed outside the inner layer. The inner layer is formed from polytetrafluoroethylene having solid structure. The outer layer is positioned at an end portion on a side of the distal tip and includes a first portion formed from polytetrafluoroethylene having solid structure and a second portion formed from polytetrafluoroethylene having porous structure.

公开(公告)号：US11435662B2

公开(公告)日：2022-09-06

申请号：US17391593

申请日：2021-08-02

Applicant: HOYA CORPORATION

Inventor： Ryo Ohkubo ,  Hiroaki Shishido ,  Takashi Uchida

IPC: G03F1/32

Abstract: In the present invention, an etching stopper film (2), a light-blocking film (3) comprising a material containing one or more elements selected from among silicon and tantalum, and a hard mask film (4) are laminated in that order on a translucent substrate (1). The etching stopper film is made of a material containing chromium, oxygen and carbon, the chromium content is 50 atom % or more, the maximum peak in a N1s narrow spectrum obtained by means of analysis using X-Ray photoelectron spectroscopy is below the detection limit, and a Cr2p narrow spectrum obtained by means of analysis using X-Ray photoelectron spectroscopy has a maximum peak at a bond energy of 574 eV or less.

公开(公告)号：US20220274870A1

公开(公告)日：2022-09-01

申请号：US17631440

申请日：2020-07-31

Applicant: HOYA CORPORATION

Inventor： Shuhei AZUMA

IPC: C03C23/00 ,  C03B29/02 ,  B23K26/354 ,  B23K26/352 ,  G11B5/73 ,  G11B5/84

Abstract: A method for manufacturing an annular glass plate that has an outer circumferential edge surface, an inner circumferential edge surface, and a thickness not larger than 0.6 mm includes processing for manufacturing an annular glass plate by irradiating each of the outer circumferential edge surface and the inner circumferential edge surface of an annular glass blank with a laser beam to melt the outer circumferential edge surface and the inner circumferential edge surface and form molten surfaces such that the molten surfaces in the outer circumferential edge surface and the inner circumferential edge surface each have an arithmetic average surface roughness Ra not larger than 0.1 μm, and the surface roughness of the molten surface in the inner circumferential edge surface becomes larger than the surface roughness of the molten surface in the outer circumferential edge surface.

公开(公告)号：US20220252972A1

公开(公告)日：2022-08-11

申请号：US17628655

申请日：2020-08-26

Applicant: HOYA CORPORATION

Inventor： Hitoshi MAEDA ,  Osamu NOZAWA

IPC: G03F1/32 ,  H01L21/027

Abstract: Provided is a mask blank that can manufacture a phase shift mask.
Provided is a mask blank having a phase shift film on a transparent substrate, the phase shift film contains hafnium, silicon, and oxygen, a ratio of a hafnium content to a total content of hafnium and silicon in the phase shift film by atom % is 0.4 or more, a refractive index n of the phase shift film to a wavelength of an exposure light of an Arf excimer laser is 2.5 or more, and an extinction coefficient k of the phase shift film to a wavelength of the exposure light is 0.30 or less.

公开(公告)号：US20220233058A1

公开(公告)日：2022-07-28

申请号：US17717468

申请日：2022-04-11

Applicant: HOYA CORPORATION

Inventor： Yoshitsugu HOSOGOE

IPC: A61B1/00 ,  A61B1/018 ,  G02B23/24 ,  A61B1/005

Abstract: Provided is an endoscope cap or the like with an elevator which is easily attached to and detached from the distal end of an endoscope.
An endoscope cap attachable to and detachable from an endoscope including a lever pivotally provided at a distal end of an insertion part of an endoscope and a pivot part causing the lever to pivot comprises: a cylindrical cover; and an elevator which is pivotally supported at the inside of the cover, is connected to the lever when the endoscope is attached to the cover, and pivots in response to pivoting of the lever.

公开(公告)号：US20220179188A1

公开(公告)日：2022-06-09

申请号：US17619490

申请日：2020-07-07

Applicant: HOYA CORPORATION

Inventor： Holger ZISCHKE

IPC: G02B23/24 ,  G02B13/06 ,  G02B13/00

Abstract: It is provided an objective lens, consisting of, in order from an object side to an image side: a first meniscus lens and a second meniscus lens, both having a convex side towards the object side; a first condensing unit; an aperture stop; a second condensing unit. An apex of the second meniscus lens is spaced apart from the first meniscus lens. A total number of lenses in the first and second condensing units is not less than 4 and not more than 6. If a radius of the first meniscus lens on the image side is denoted r2, a radius of the second meniscus lens on the object side is denoted r3, and a radius of the second meniscus lens on the image side is denoted r4, at least two of the following three conditions are fulfilled: r2/r4≥1.40; r4/r3≥0.111; and r2/r3≥0.16.

公开(公告)号：US20220167839A1

公开(公告)日：2022-06-02

申请号：US17434610

申请日：2020-03-03

Applicant: HOYA CORPORATION

Inventor： Anh Minh DO ,  Tilman SCHRÖTER

IPC: A61B1/05 ,  A61B1/06 ,  A61B1/273 ,  A61B1/00

Abstract: The invention relates to an endoscope having a distal end portion, at which a light emitting means and an image pickup device are arranged, wherein, at the distal end portion, a light incidence region is defined at the outer circumference of the distal end portion. The longitudinal axis of the image pickup device is oriented towards the light incidence region at the outer circumference of the distal end portion.

公开(公告)号：US20220163880A1

公开(公告)日：2022-05-26

申请号：US17668597

申请日：2022-02-10

Applicant: HOYA CORPORATION

Inventor： Osamu NOZAWA ,  Ryo OHKUBO ,  Hiroaki SHISHIDO

IPC: G03F1/24 ,  H01L21/033

Abstract: A light shielding film made up of a material containing one or more elements selected from silicon and tantalum and a hard mask film made up of a material containing chromium, oxygen, and carbon are laminated on a transparent substrate. The hard mask film is a single layer film having a composition gradient portion with increased oxygen content on the surface and on the neighboring region. The maximum peak for Nis in a narrow spectrum obtained via X-ray photoelectron spectroscopy analysis is the lower limit of detection or less. The portions excluding the composition gradient portion of the hard mask film have a 50 atom % or more chromium content, and the maximum peak for Cr2p in a narrow spectrum obtained via X-ray photoelectron spectroscopy analysis has a binding energy of 574 eV or less.

公开(公告)号：US20220151767A1

公开(公告)日：2022-05-19

申请号：US17435762

申请日：2019-12-23

Applicant: Hoya Corporation

Inventor： Kazunori KUDO

IPC: A61F2/16 ,  A61F9/007

Abstract: There is provided an intraocular lens injector for improving accuracy of tacking, which is an intraocular lens injector 1 for injecting an intraocular lens 4 into an eye, the intraocular lens including an optical portion 41 having an optical function and support portions 42a and 42b extending from the optical portion 41, including: a protrusion 20 for bending a forward support portion 42a while abutting against the forward support portion 42a, the forward support portion being one of the support portions 42a and 42b and being disposed on the front side in an advancing direction of the intraocular lens, when making the intraocular lens 4 advance along an inner wall of a hollow body in which the intraocular lens 4 is set and thereby releasing the intraocular lens 4 from the hollow body in a state in which the intraocular lens 4 is folded with an inner surface of the optical portion 41 facing inward, wherein the protrusion 20 has a retainer that temporarily suppresses progress of bending of the forward support portion 42a by retaining the forward support portion 42a, when the intraocular lens 4 is being folded.

公开(公告)号：US11327396B2

公开(公告)日：2022-05-10

申请号：US16085316

申请日：2017-03-08

Applicant: HOYA CORPORATION

Inventor： Atsushi Kominato ,  Toshiyuki Suzuki

IPC: G03F1/32 ,  G03F1/54 ,  G03F1/80 ,  G03F1/26 ,  H01L21/033

Abstract: A mask blank for manufacturing a transfer mask. A thin film (2) includes a material containing a metal, silicon, and nitrogen; a ratio of metal content[atom %] to the total content [atom %] of metal and silicon in the thin film (2) is 15% or less. When the thin film is subjected to an analysis of a secondary ion mass spectrometry and a distribution of a secondary ion intensity of silicon in depth direction, a ratio of 1.6 or less is obtained of (i) a maximum peak [Counts/sec] of a secondary ion intensity of silicon at a surface layer region, which is opposite from a transparent substrate (1), of the thin film (2), divided by (ii) an average value [Counts/sec] of a secondary ion intensity of silicon in a depth direction of an inner region, which is a region excluding the surface layer region and a vicinity region with an interface, of the transparent substrate (1) of the thin film (2).