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公开(公告)号：US20190243043A1
公开(公告)日：2019-08-08
申请号：US16388892
申请日：2019-04-19
Applicant: FUJIFILM Corporation
Inventor： Hiroshi INADA , Shigeaki NIMURA , Mitsuyoshi ICHIHASHI , Rie TAKASAGO
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.
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公开(公告)号：US20220128747A1
公开(公告)日：2022-04-28
申请号：US17572556
申请日：2022-01-10
Applicant: FUJIFILM Corporation
Inventor： Shigeaki NIMURA , Shuji ONO
IPC: G02B5/26 , G02B5/30 , H01L27/146
Abstract: Provided a filter and an imaging apparatus for obtaining a higher-quality multispectral image in which the tint of the image is uniform. The filter includes: an optical filter layer; and a patterned retardation layer that is laminated on the optical filter layer. The optical filter layer includes at least three reflective layers that are formed of a cholesteric liquid crystal layer, and the reflective layers have different reflection center wavelengths. Alternatively, the optical filter layer includes a reflective layer that is formed of a cholesteric liquid crystal layer having at least two different reflection center wavelengths. The patterned retardation layer has a slow axis in a direction corresponding to the reflection center wavelength of the reflective layer.
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公开(公告)号：US20190172988A1
公开(公告)日：2019-06-06
申请号：US16257024
申请日：2019-01-24
Applicant: FUJIFILM Corporation
Inventor： Shigeaki NIMURA , Shunya KATOH , Yuki NAKAZAWA , Kazuhiro OKI , Mitsuyoshi ICHIHASHI , Yoshihisa USAMI
Abstract: The present invention provides a blue light blocking film including a selective reflection layer, in which the selective reflection layer exhibits selective reflection having a center wavelength in a wavelength range of 450 nm to 500 nm, a half-width of the selective reflection is 20 nm to 45 nm, a light transmittance of the selective reflection layer at the center wavelength is 50% or less, and a light transmittance of the selective reflection layer at any wavelength in a wavelength range of more than 500 nm and 780 nm or less is 60% or more. The blue light blocking film of the present invention has high light transmittance in a visible light range, while effectively blocking blue light, and has a reduced yellowish tint. The blue light blocking film of the present invention is used for light sources and the like, and is capable of effectively blocking blue light.
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公开(公告)号：US20210373218A1
公开(公告)日：2021-12-02
申请号：US17401477
申请日：2021-08-13
Applicant: FUJIFILM Corporation
Inventor： Yukito SAITOH , Hiroshi SATO , Katsumi SASATA , Shigeaki NIMURA
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.
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公开(公告)号：US20200052028A1
公开(公告)日：2020-02-13
申请号：US16659580
申请日：2019-10-22
Applicant: FUJIFILM Corporation
Inventor： Hiroshi INADA , Rie TAKASAGO , Shigeaki NIMURA
IPC: H01L27/146 , G02F1/1335 , G02B5/30
Abstract: Provided are an imaging device that is inconspicuous from the outside, can easily apply design, and can obtain a clear image, and a laminate. The imaging device includes: an imaging unit that includes an image pickup element; and a transflective film that is disposed on a side of the imaging unit where light is incident into the image pickup element and reflects a part of the incident light, in which the transflective film includes at least one of a cholesteric liquid crystal layer or a multi-layer polymer film, when seen from a direction perpendicular to a surface of the image pickup element where light is incident, a peripheral region surrounding the imaging unit satisfies L*≤50 in a CIE-Lab (D50) color space, and when seen from the direction perpendicular to the surface of the image pickup element where light is incident, the transflective film is disposed to cover at least the imaging unit and the peripheral region.
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Patent Agency Ranking
公开(公告)号：US20190204614A1
公开(公告)日：2019-07-04
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
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.
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公开(公告)号：US20210008916A1
公开(公告)日：2021-01-14
申请号：US17033670
申请日：2020-09-25
Applicant: FUJIFILM Corporation
Inventor： Toshiyuki MAKUTA , Shigeaki NIMURA , Hiroshi INADA , Rie TAKASAGO , Tomohiro MIZUNO
IPC: B41M5/00 , B41J2/01 , C09D11/328 , C09D11/38
Abstract: Provided is an image forming method including a step of imagewisely applying, onto a base material by an inkjet method, at least two inks containing a polymerizable liquid crystal compound, a chiral compound, and a polymerization initiator and having reflection wavelengths different from each other, such that the total application amount of the inks provides an image area ratio of 50% or more in an image forming region.
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公开(公告)号：US20200150328A1
公开(公告)日：2020-05-14
申请号：US16746948
申请日：2020-01-19
Applicant: FUJIFILM Corporation
Inventor： Shigeaki NIMURA
IPC: G02B5/26
Abstract: The invention provides a reflection film in which generation of side lobes derived from a cholesteric liquid crystalline layer is suppressed. A reflection film of the invention includes: a first cholesteric liquid crystalline layer which is formed of a composition including a first liquid crystal compound; and a second cholesteric liquid crystalline layer which is disposed at least on one surface of the first cholesteric liquid crystalline layer and formed of a composition including a second liquid crystal compound, in which a helical pitch length of the first cholesteric liquid crystalline layer is constant, a birefringence Δn2 of the second liquid crystal compound is smaller than a birefringence Δn1 of the first liquid crystal compound, and a helical pitch number of the second cholesteric liquid crystalline layer is a half or less of a helical pitch number of the first cholesteric liquid crystalline layer.
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公开(公告)号：US20190243045A1
公开(公告)日：2019-08-08
申请号：US16390025
申请日：2019-04-22
Applicant: FUJIFILM Corporation
Inventor： Hiroshi INADA , Mitsuyoshi ICHIHASHI , Shigeaki NIMURA , Rie TAKASAGO
Abstract: An object of the present invention is to provide a transmission decorative film capable of applying different visual effects on observation surfaces and a method of manufacturing the same.Provided is a transmission decorative film of the present invention including: a circular polarization plate; and a circular polarization reflection layer disposed on the circular polarization plate, in which 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, and 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.
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10.发明申请公开(公告)号：US20190109161A1
公开(公告)日：2019-04-11
申请号：US16214152
申请日：2018-12-10
Applicant: FUJIFILM Corporation
Inventor： Ryoji GOTO , Kazuto SHIMADA , Shigeaki NIMURA
Abstract: Provided are: a color filter for an image sensor in which an infrared filter having no particulate defects or the like can be laminated adjacent to an image pickup element and in which the total thickness of an image sensor can be significantly reduced; an image sensor including the color filter for an image sensor; and a method of manufacturing the color filter for an image sensor. The color filter for an image sensor includes: two or more absorbing color filters that absorb light components having different wavelength ranges; and a cholesteric reflecting layer in which a right circularly polarized light cholesteric layer having right circularly polarized light reflecting properties and a left circularly polarized light cholesteric layer having left circularly polarized light reflecting properties are laminated.
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