Title:
LIGHT INCOUPLING TAPE, RELATED METHOD AND USES
Document Type and Number:
WIPO Patent Application WO/2022/030543
Kind Code:
A1
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.
Inventors:
NAKAMURA KOZO (JP)
MIYATAKE MINORU (JP)
WENG YUFENG (JP)
RINKO KARI (FI)
MATSUMOTO SHINGO (JP)
MIYATAKE MINORU (JP)
WENG YUFENG (JP)
RINKO KARI (FI)
MATSUMOTO SHINGO (JP)
Application Number:
PCT/JP2021/028954
Publication Date:
February 10, 2022
Filing Date:
August 04, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B6/00; F21S2/00; F21V8/00
Domestic Patent References:
| WO2019182098A1 | 2019-09-26 |
Foreign References:
| US20100061101A1 | 2010-03-11 | |||
| JP2017107174A | 2017-06-15 | |||
| JPH10111511A | 1998-04-28 | |||
| CN202813209U | 2013-03-20 |
Attorney, Agent or Firm:
OKUDA Seiji (JP)
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