公开(公告)号：US20230288614A1

公开(公告)日：2023-09-14

申请号：US18089690

申请日：2022-12-28

Applicant: Daicel Corporation

Inventor： Hiroki Takenaka ,  Hiroyuki Hanato ,  Maki Kishimoto

IPC: G02B3/00 ,  G03B17/12 ,  G02B7/02 ,  G02B27/00

CPC classification number: G02B3/0075 ,  G03B17/12 ,  G02B7/02 ,  G02B27/0018

Abstract: There is provided a technique that can suppress generation of flare and/or ghost by incident light reflecting off an inner wall of the spacer in a lens unit including a wafer-level lens and a spacer. A lens unit is formed by joining a lens portion including a lens and a spacer portion including a through hole through which light emitted from the lens passes, in which the spacer portion includes, in an end surface in which the lens portion is joined, an opening portion of the through hole and an inner wall portion, which is a wall surface of an outer edge of the opening portion, and the inner wall portion has a surface roughness greater than a surface roughness of an end surface of the spacer portion opposite to the end surface in which the lens portion is joined.

公开(公告)号：US20150212300A1

公开(公告)日：2015-07-30

申请号：US14424935

申请日：2013-08-22

Applicant: DAICEL CORPORATION

Inventor： Takashi Kubo ,  Hiroki Takenaka

IPC: G02B13/00 ,  C08G59/02 ,  G02B1/04 ,  B29D11/00

CPC classification number: G02B13/0085 ,  B29C39/02 ,  B29D11/00365 ,  B29K2063/00 ,  B29K2083/00 ,  C08G59/02 ,  C08G59/226 ,  C08G59/24 ,  C08G59/306 ,  C08G59/3218 ,  C08G59/3281 ,  G02B1/041 ,  C08L63/00 ,  C08L83/06 ,  C08L83/04

Abstract: An object of the present invention is to provide a curable composition that can be cured satisfactorily and can form a cured product having a high glass transition temperature as maintained and having high mechanical strength. A curable composition includes a siloxane (A), a cycloaliphatic epoxide (B), and a curing agent (C). The siloxane (A) contains at least two epoxy groups per molecule. The cycloaliphatic epoxide (B) in the curable composition is preferably a compound represented by Formula (I): wherein X is selected from a single bond and a linkage group.

Abstract translation: 本发明的目的是提供可以令人满意地固化并可以形成维持高玻璃化转变温度并具有高机械强度的固化产物的可固化组合物。 可固化组合物包括硅氧烷（A），脂环族环氧化物（B）和固化剂（C）。 硅氧烷（A）每分子含有至少两个环氧基团。 可固化组合物中的脂环族环氧化物（B）优选为由式（I）表示的化合物：其中X选自单键和连接基团。

公开(公告)号：US20230176249A1

公开(公告)日：2023-06-08

申请号：US17987136

申请日：2022-11-15

Applicant: Daicel Corporation

Inventor： Hiroki Takenaka ,  Hiromi Honma ,  Hiroyuki Hanato ,  Shinji Kikuchi

IPC: G02B1/04 ,  B29D11/00 ,  C09J163/00 ,  C09J133/04 ,  C09J5/00

CPC classification number: G02B1/041 ,  B29D11/00442 ,  B29D11/00403 ,  C09J163/00 ,  C09J133/04 ,  C09J5/00 ,  G02B5/005

Abstract: As a first aspect, provided is a hybrid lens for which peeling and shifting of a glass and a resin lens do not easily occur, and for which floating of an adhesive layer and peeling between the glass and resin lens do not easily occur even when the hybrid lens is exposed to a high temperature environment. As a second aspect, provided is an easily produced hybrid lens in which a glass and a resin lens are laminated, and in which the resin lens and a light-shielding portion are laminated with good precision.
The hybrid lenses 11 and 12 each include a glass substrate 3, a resin lens 2, and an adhesive layer 4 provided between the glass substrate 3 and the resin lens 2. In the hybrid lens 11, the glass transition temperature of the resin lens 2 is higher than the glass transition temperature of the adhesive layer 4, and the difference between the glass transition temperature of the resin lens 2 and the glass transition temperature of the adhesive layer 4 is from 97 to 150° C. The hybrid lens 12 further includes a metal compound layer 52 provided between the glass substrate 3 and the resin lens 2.

公开(公告)号：US11029497B2

公开(公告)日：2021-06-08

申请号：US16001223

申请日：2018-06-06

Applicant: DAICEL CORPORATION

Inventor： Takashi Kubo ,  Hiroki Takenaka

IPC: G02B13/00 ,  C08G59/24 ,  C08G59/32 ,  C08G59/22 ,  C08G59/02 ,  C08G59/30 ,  G02B1/04 ,  B29D11/00 ,  B29C39/02 ,  B29K63/00 ,  B29K83/00

Abstract: An object of the present invention is to provide a curable composition that can be cured satisfactorily and can form a cured product having a high glass transition temperature as maintained and having high mechanical strength. A curable composition includes a siloxane (A), a cycloaliphatic epoxide (B), and a curing agent (C). The siloxane (A) contains at least two epoxy groups per molecule. The cycloaliphatic epoxide (B) in the curable composition is preferably a compound represented by Formula (I): wherein X is selected from a single bond and a linkage group.

公开(公告)号：US10018810B2

公开(公告)日：2018-07-10

申请号：US14424935

申请日：2013-08-22

Applicant: DAICEL CORPORATION

Inventor： Takashi Kubo ,  Hiroki Takenaka

IPC: C08G59/20 ,  G02B13/00 ,  G02B1/04 ,  C08G59/24 ,  C08G59/30 ,  C08G59/32 ,  B29D11/00 ,  C08G59/02 ,  C08G59/22 ,  B29C39/02 ,  B29K63/00 ,  B29K83/00

CPC classification number: G02B13/0085 ,  B29C39/02 ,  B29D11/00365 ,  B29K2063/00 ,  B29K2083/00 ,  C08G59/02 ,  C08G59/226 ,  C08G59/24 ,  C08G59/306 ,  C08G59/3218 ,  C08G59/3281 ,  G02B1/041 ,  C08L63/00 ,  C08L83/06 ,  C08L83/04

Abstract: An object of the present invention is to provide a curable composition that can be cured satisfactorily and can form a cured product having a high glass transition temperature as maintained and having high mechanical strength. A curable composition includes a siloxane (A), a cycloaliphatic epoxide (B), and a curing agent (C). The siloxane (A) contains at least two epoxy groups per molecule. The cycloaliphatic epoxide (B) in the curable composition is preferably a compound represented by Formula (I): wherein X is selected from a single bond and a linkage group.

公开(公告)号：US11099347B2

公开(公告)日：2021-08-24

申请号：US16465042

申请日：2017-10-11

Applicant: DAICEL CORPORATION

Inventor： Hiroki Takenaka ,  Hiromi Honma

IPC: G02B7/02 ,  G03B17/12

Abstract: The imaging-device lens module includes a lens and a spacer. The lens includes a functioning portion, a non-functioning portion, and a support. The non-functioning portion is disposed around the periphery of, and is integral with, the functioning portion. The support is integral with the non-the functioning portion and supports the lens. The spacer has a flat top face, and the support has a flat bottom face. The spacer is bonded at the top face to the bottom face to support the lens. The top face has a width B, and the bottom face has a width A, where B is greater than A. The support has a height L1, the spacer has a height L2, and the functioning portion has a diameter D, where the total of L1 and L2 is greater than D, and where the diameter D is equal to or greater than the height L1.

公开(公告)号：US09856347B2

公开(公告)日：2018-01-02

申请号：US15113399

申请日：2015-02-16

Applicant: DAICEL CORPORATION

Inventor： Hiroki Takenaka ,  Kyohei Ishida

IPC: C08G59/22 ,  C08G59/20 ,  G02B1/04 ,  C08L63/00 ,  G02B3/00

CPC classification number: C08G59/226 ,  C08G59/20 ,  C08L63/00 ,  G02B1/041 ,  G02B3/00 ,  C08L83/04

Abstract: Provided is a curable composition that is rapidly cured to form a cured product. The cured product resists yellowing, successfully maintains excellent transparency over a long time even in a high-temperature environment, and is advantageously usable as or in a wafer-level lens. The curable composition according to the present invention includes a cycloaliphatic epoxide (A), a siloxane compound (B), and a curing agent (C). The cycloaliphatic epoxide (A) is represented by Formula (1). The siloxane compound (B) contains two or more glycidyl groups per molecule. In the formula, X is selected from a single bond and a linkage group.