公开(公告)号：US20210382214A1

公开(公告)日：2021-12-09

申请号：US17286884

申请日：2019-10-23

Applicant: Dexerials Corporation

Inventor： Shunichi KAJIYA ,  Hiroshi TAZAWA ,  Kazuhiko NODA ,  Kyoko SAKURAI

IPC: G02B5/22

Abstract: Provided is an optical filter having different color correction effects for specific wavelength regions depending on the angle of incident light. The optical filter includes a transmission portion transmitting light and an absorption portion absorbing light between a plane of incidence and a plane of emission, and the volume of the transmission portion is larger than the volume of the absorption portion. For the optical filter, when the transmission spectrum S0 of light incident at 0° and the transmission spectrum S60 of light incident at 60° are superimposed, the transmittance (%) at 60° is lower than the transmittance (%) at 0° by 15% or more for a first wavelength band, and the difference between the transmittance (%) at 60° and the transmittance (%) at 0° is lower by 10% or more less for a second wavelength band.

公开(公告)号：US20180224578A1

公开(公告)日：2018-08-09

申请号：US15771960

申请日：2016-10-04

Applicant: DEXERIALS CORPORATION

Inventor： Shunichi KAJIYA ,  Asahiko NOGAMI ,  Kyoko SAKURAI ,  Kazuya HAYASHIBE

IPC: G02B1/118

CPC classification number: G02B1/118

Abstract: There is provided an optical body and a display device that enable wavelength dependence of a reflectance to be reduced and reflection of incident light to be further suppressed, the optical body including: a concave-convex structure formed on a surface of a base material. An average period of concavities and convexities of the concave-convex structure is equal to or shorter than a wavelength belonging to a visible light band. A standard deviation of differences between respective positions of bottom faces of the concavities of the concave-convex structure in a normal direction of a flat surface of the base material and a median of the positions of the bottom faces is greater than or equal to 25 nm.