公开(公告)号：US12189159B2

公开(公告)日：2025-01-07

申请号：US17401477

申请日：2021-08-13

Applicant: FUJIFILM Corporation

Inventor： Yukito Saitoh ,  Hiroshi Sato ,  Katsumi Sasata ,  Shigeaki Nimura

IPC: G02B5/30 ,  F21V8/00

Abstract: Provided are an optical element, a light guide element, and an image display element in which the occurrence of sidelobe is suppressed. The optical element includes a cholesteric liquid crystal layer that is obtained by immobilizing a cholesteric liquid crystalline phase, in which the cholesteric liquid crystal layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, and in a case where a birefringence in a thickness region of 80% as a center portion with respect to a thickness of the cholesteric liquid crystal layer is represented by Δn1, a birefringence in a thickness region of 10% from one surface of the cholesteric liquid crystal layer is represented by Δn2, and a birefringence in a thickness region of 10% from another surface of the cholesteric liquid crystal layer is represented by Δn3, at least one of Δn2 or Δn3 is less than Δn1.

公开(公告)号：US11433743B2

公开(公告)日：2022-09-06

申请号：US16720001

申请日：2019-12-19

Applicant: FUJIFILM Corporation

Inventor： Shigeaki Nimura ,  Hiroshi Inada ,  Rie Takasago

IPC: B60J1/02 ,  G02B27/01 ,  G02B5/30 ,  B60J1/00 ,  B60K35/00 ,  G02B5/26 ,  B32B17/10

Abstract: Provided is a half mirror which is used for a windshield constituting a head up display, and in which a feeling of glare is suppressed, and a boundary between a region which selectively reflects visible light and a region which reflects visible light is made inconspicuous. The half mirror has a reflection layer including a non-reflection region which does not reflect visible light, a reflection region which selectively reflects visible light, and a mixed region which is provided between the regions and in which a non-reflection portion which does not reflect visible light and a reflection portion which selectively reflects visible light are mixed, and in the mixed region, an area of the reflection portion is gradually increased from the non-reflection region toward the reflection region.

公开(公告)号：US11169389B2

公开(公告)日：2021-11-09

申请号：US16297743

申请日：2019-03-11

Applicant: FUJIFILM CORPORATION

Inventor： Yukito Saitoh ,  Kunihiro Atsumi ,  Naoyoshi Yamada ,  Daisuke Kashiwagi ,  Shigeaki Nimura ,  Mitsuyoshi Ichihashi ,  Rie Takasago

IPC: G02B27/28 ,  G02B3/00 ,  G02B5/30

Abstract: An optical laminate includes a cholesteric liquid crystal layer and a lenticular lens which is laminated on the cholesteric liquid crystal layer, the cholesteric liquid crystal layer has a plurality of regions which are arranged in a pattern in an arrangement direction of lenses of the lenticular lens and are different from each other in terms of the reflection center wavelength for front incident light, and among the plurality of regions, a region having the shortest reflection center wavelength is disposed at a focus position of the lenticular lens for the front incident light, and among the plurality of regions, a region having a longer reflection center wavelength is disposed further away from the focus position.

公开(公告)号：US11061270B2

公开(公告)日：2021-07-13

申请号：US16533763

申请日：2019-08-06

Applicant: FUJIFILM Corporation

Inventor： Shigeaki Nimura ,  Hiroshi Inada ,  Mitsuyoshi Ichihashi

IPC: G02F1/1335 ,  G02B5/30 ,  G02F1/13363

Abstract: To provide a decorative film capable of applying a visual effect of making a pattern not visually recognizable, in a case where it is seen from the front, and making it visually recognizable, in a case where it is obliquely seen.
a circular polarization plate including a linear polarization plate, and a laminate of a uniaxial retardation layer or a biaxial retardation layer; and a circularly polarized light reflection layer which reflects circularly polarized light having a revolution direction opposite to that of light transmitted through the circular polarization plate in a vertical direction from the linear polarization plate side are included.

公开(公告)号：US10690827B2

公开(公告)日：2020-06-23

申请号：US16390025

申请日：2019-04-22

Applicant: FUJIFILM Corporation

Inventor： Hiroshi Inada ,  Mitsuyoshi Ichihashi ,  Shigeaki Nimura ,  Rie Takasago

IPC: G02B5/30 ,  G03F7/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: A transmission decorative film includes a circular polarization plate and a circular polarization reflection layer disposed on the circular polarization plate. The circular polarization reflection layer includes at least one or more first cholesteric liquid crystalline layers that reflect any one of left circularly polarized light or right circularly polarized light. The first cholesteric liquid crystalline layer includes two or more reflection regions having different selective reflection wavelengths. The circular polarization plate transmits circularly polarized light having a revolution direction opposite to a revolution direction of the circularly polarized light reflected by the first cholesteric liquid crystalline layer.

公开(公告)号：US10534238B2

公开(公告)日：2020-01-14

申请号：US16388892

申请日：2019-04-19

Applicant: FUJIFILM Corporation

Inventor： Hiroshi Inada ,  Shigeaki Nimura ,  Mitsuyoshi Ichihashi ,  Rie Takasago

IPC: G02F1/225 ,  G02F1/1335 ,  G02B5/30 ,  B32B7/023 ,  B32B7/02 ,  G09F19/12 ,  G02F1/29

Abstract: An object of the present invention is to provide a transmission decorative film having transparency and capable of applying different visual effects on observation surfaces. The transmission decorative film includes: a linear polarization plate; a first λ/4 plate laminated on one main surface of the linear polarization plate; a first cholesteric liquid crystalline layer laminated on the first λ/4 plate; a second λ/4 plate laminated on the other main surface of the linear polarization plate; and a second cholesteric liquid crystalline layer laminated on the second λ/4 plate, in which the first cholesteric liquid crystalline layer and the second cholesteric liquid crystalline layer respectively have wavelength selective reflectivity and reflect light which is right circularly polarized light or left circularly polarized light at a selective reflection wavelength.