公开(公告)号：US20230296823A1

公开(公告)日：2023-09-21

申请号：US18019298

申请日：2021-08-04

Applicant: NITTO DENKO CORPORATION

Inventor： Kozo NAKAMURA ,  Minoru MIYATAKE ,  Yufeng WENG ,  Kari RINKO ,  Shingo MATSUMOTO

IPC: F21V8/00

CPC classification number: G02B6/0055 ,  G02B6/0016 ,  G02B6/002 ,  G02B6/0073 ,  G02B6/0068 ,  G02B6/0026 ,  G02B6/0065 ,  G02B6/0088

Abstract: An optical incoupling tape (50) attachable on a lightguide (20) is provided, comprising a substrate (50A) and at least one pattern (51) formed with a number of periodic pattern features (52) embedded in the substrate (50A) and configured as optically functional cavities (52) filled with a material having a refractive index different from the refractive index of the material of the substrate (50A) surrounding the cavity (52). The pattern (51) is configured to incouple light incident thereto and to adjust direction of the incoupled light such, that the incoupled light acquires a propagation path through a lightguide medium (20) via a series of total internal reflections. A method for manufacturing the tape (50), related uses and an optical apparatus comprising the tape (50) integrated with a light emitter device (22) are further provided.

公开(公告)号：US20230288624A1

公开(公告)日：2023-09-14

申请号：US18019284

申请日：2021-08-04

Applicant: NITTO DENKO CORPORATION

Inventor： Kozo NAKAMURA ,  Minoru MIYATAKE ,  Yufeng WENG ,  Kari RINKO ,  Shingo MATSUMOTO

IPC: F21V8/00

CPC classification number: G02B6/0023 ,  G02B6/0065

Abstract: An optical deflection tape (10) attachable on a lightguide (20) is provided, comprising a substrate (10A) and at least one pattern (11) formed with a number of periodic pattern features (12) embedded in the substrate (10A) and configured as optically functional cavities (12) filled with a material having a refractive index different from the refractive index of the material of the substrate (10A) surrounding the cavity (12). The pattern (11) is configured to adjust direction of light received thereto such, that light incident at the pattern (11) is deflected to acquire a propagation path through a lightguide medium (20) via a series of total internal reflections and, by virtue of said at least one pattern (11), the optical deflection tape (10) is configured to control distribution of light propagating through the lightguide (20). A method for manufacturing the tape (10) and related uses are further provided.

公开(公告)号：US20230273363A1

公开(公告)日：2023-08-31

申请号：US18019301

申请日：2021-08-04

Applicant: NITTO DENKO CORPORATION

Inventor： Kozo NAKAMURA ,  Minoru MIYATAKE ,  Yufeng WENG ,  Kari RINKO ,  Shingo MATSUMOTO

IPC: F21V8/00

CPC classification number: G02B6/0031

Abstract: An optical incoupling element (100) provided in the form of a discrete item attachable on a lightguide (20) is provided, comprising a substrate (100A) and at least one three-dimensionally formed optical surface (104). The optical surface (104) is configured to incouple light incident thereto and to adjust direction of the incoupled light transmitted through an optical contact surface (107) established at an interface between the element substrate (100A) and a lightguide medium (20) such, that the incoupled light acquires a propagation path through a lightguide medium (20) via a series of total internal reflections. The optical surface (104) may comprise at least on optical cavity pattern (101). The element (100) is configured to receive light onto said at least one three-dimensionally formed optical surface (104) from a direction essentially parallel to a longitudinal plane of the planar lightguide (20). A method for manufacturing the optical incoupling element (100), related arrangement, optical unit (250) and uses are further provided.

公开(公告)号：US20210026086A1

公开(公告)日：2021-01-28

申请号：US16982293

申请日：2019-03-22

Applicant: NITTO DENKO CORPORATION

Inventor： Kari RINKO ,  Shingo MATSUMOTO

IPC: G02B6/42 ,  F21V8/00

Abstract: A transparent optical device (100) is provided, comprising a lightguide medium (101) configured for light propagation, and an at least one optically functional layer (10) comprising at least one optically functional feature pattern (11) formed in a light-transmitting carrier medium (11 1) by a plurality of embedded features provided as optically functional internal cavities (12), wherein said at least one feature pattern (11) is configured to perform an incident light control function and at least a light outcoupling function, whereby stray light is minimized and optical transparency of the device (100) is established.