公开(公告)号：US20150183682A1

公开(公告)日：2015-07-02

申请号：US14414249

申请日：2013-07-18

Applicant: HOYA CORPORATION

Inventor： Yoshitake Tanno ,  Yuki Shiota

IPC: C03C3/247

CPC classification number: C03C3/247 ,  G02B1/02

Abstract: Provided are an optical fluorophosphate glass having excellent optical characteristics and also excellent processability, a glass material for press molding and an optical element each including the glass, and methods for producing the glass material and the optical element. The optical glass includes P5+ as a cationic component and O2− and F− as anionic components, wherein the optical glass has a content of F− of 40 anionic % or less, an abrasion factor FA of 420 or higher, and a fragility index value B of 4500 μm−1/2 or lower.

Abstract translation: 提供了具有优异的光学特性和优异的加工性的光学氟磷酸盐玻璃，用于压制成型的玻璃材料和各自包括玻璃的光学元件，以及用于制造玻璃材料和光学元件的方法。 光学玻璃包括作为阳离子成分的P5 +和作为阴离子成分的O1-和F-，其中光学玻璃的含量为40-阴离子％以下，磨损因子FA为420以上，脆性指数值 B为4500μm-1/2以下。

公开(公告)号：US11682425B2

公开(公告)日：2023-06-20

申请号：US17315109

申请日：2021-05-07

Applicant: HOYA CORPORATION

Inventor： Shinji Eda ,  Kinobu Osakabe ,  Yoshitake Tanno ,  Mikio Ikenishi

IPC: G11B17/02 ,  G11B17/038 ,  G11B25/04 ,  G11B33/14 ,  G11B5/73 ,  G11B17/32 ,  G11B33/12

CPC classification number: G11B17/021 ,  G11B17/038 ,  G11B25/043 ,  G11B33/1493 ,  G11B5/73921 ,  G11B17/32 ,  G11B33/125

Abstract: A ring-shaped glass spacer is configured to be arranged in contact with a magnetic disk in a hard disk drive apparatus. A surface resistivity of a surface of a glass material of the glass spacer at 22 (° C.) is lower than a surface resistivity of an inner portion of the glass material at 22 (° C.).

公开(公告)号：US12187640B2

公开(公告)日：2025-01-07

申请号：US17608873

申请日：2020-04-30

Applicant: HOYA CORPORATION

Inventor： Mikio Ikenishi ,  Yoshitake Tanno

IPC: C03C23/00 ,  C03C3/21 ,  C03C4/02 ,  C03C17/09 ,  G02B1/12 ,  G02B5/00

Abstract: [Problem] To provide glass having a colored layer.
[Solution] Glass having a colored layer.

公开(公告)号：US11031038B2

公开(公告)日：2021-06-08

申请号：US16641399

申请日：2019-01-31

Applicant: HOYA CORPORATION

Inventor： Shinji Eda ,  Kinobu Osakabe ,  Yoshitake Tanno ,  Mikio Ikenishi

IPC: G11B17/32 ,  G11B5/73 ,  G11B17/038 ,  G11B33/12

Abstract: A glass material of a glass spacer has a surface resistivity of 103 to 109 (Ω/sq) at 22 (° C.). The surface resistivity of a surface of the glass material of the glass spacer at 22 (° C.) is lower than the surface resistivity of an inner portion of the glass material at 22 (° C.). The glass spacer contains at least one oxide selected from the group consisting of TiO2, Nb2O5, WO3, and Bi2O3, as a glass component.

公开(公告)号：US09481600B2

公开(公告)日：2016-11-01

申请号：US14414249

申请日：2013-07-18

Applicant: HOYA CORPORATION

Inventor： Yoshitake Tanno ,  Yuki Shiota

IPC: C03C3/247 ,  G02B1/02

CPC classification number: C03C3/247 ,  G02B1/02

Abstract: Provided are an optical fluorophosphate glass having excellent optical characteristics and also excellent processability, a glass material for press molding and an optical element each including the glass, and methods for producing the glass material and the optical element. The optical glass includes P5+ as a cationic component and O2− and F− as anionic components, wherein the optical glass has a content of F− of 40 anionic % or less, an abrasion factor FA of 420 or higher, and a fragility index value B of 4500 μm−1/2 or lower.

Abstract translation: 提供了具有优异的光学特性和优异的加工性的光学氟磷酸盐玻璃，用于压制成型的玻璃材料和各自包括玻璃的光学元件，以及用于制造玻璃材料和光学元件的方法。 光学玻璃包括作为阳离子成分的P5 +和作为阴离子成分的O1-和F-，其中光学玻璃的含量为40-阴离子％以下，磨损因子FA为420以上，脆性指数值 B为4500μm-1/2以下。

公开(公告)号：US11774649B2

公开(公告)日：2023-10-03

申请号：US17237617

申请日：2021-04-22

Applicant: HOYA CORPORATION

Inventor： Toshiki Nakamura ,  Yutaka Takakubo ,  Yoshitake Tanno ,  Yasushi Tsutsumi ,  Naomi Matsumoto

IPC: G02B5/18

CPC classification number: G02B5/1814 ,  G02B2005/1804

Abstract: An optical element includes a glass body including a colored layer provided inside the glass body and positioned at an optical function surface of the optical element. An optical apparatus including the optical element is also provided.

公开(公告)号：US11656456B2

公开(公告)日：2023-05-23

申请号：US16991411

申请日：2020-08-12

Applicant: HOYA CORPORATION

Inventor： Toshiki Nakamura ,  Masaru Eguchi ,  Yutaka Takakubo ,  Yoshitake Tanno ,  Naomi Matsumoto

IPC: G02B27/00 ,  G02B5/00 ,  G02B1/11

CPC classification number: G02B27/0018 ,  G02B1/11 ,  G02B5/003

Abstract: An optical element including a glass body is provided. The optical element includes a colored layer provided inside the glass body and positioned outside an effective aperture of the optical element. Coloring of the colored layer is a reduction pigment occurring in a glass component of the glass body. The colored layer suppresses occurrence of stray light and obtains sufficient light-shielding properties, so that a superior image quality can be achieved.