Patents by Inventor Asana YOSHIOKA
Asana YOSHIOKA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11029457Abstract: To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol·cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R1 is a monovalent hydrocarbon group which may have a substituent, or the like, R2 to R5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.Type: GrantFiled: March 29, 2019Date of Patent: June 8, 2021Assignee: AGC Inc.Inventors: Kazuhiko Shiono, Asana Yoshioka, Shoko Suzuki, Hiroki Hotaka
-
Patent number: 10408979Abstract: Provided is an optical filter, which includes a light-absorbing layer and a light-reflecting layer and satisfies the following requirements: (i) in a spectral transmittance curve at an incident angle of 0°, an average transmittance over the 430-620 nm wavelength range is ?80%, an average transmittance over the 430-450 nm wavelength range is ?76%, an average transmittance over the 735-1100 nm wavelength range is ?5%, and an average transmittance over the 350-395 nm wavelength is ?5%; and (ii) there is a wavelength ?0(UV) with transmittance of 50% in the 400-425 nm wavelength range in the spectral transmittance curve at the incident angle of 0°, there is a wavelength ?30(UV) with transmittance of 50% in the 400-425 nm wavelength range in a spectral transmittance curve at an incident angle of 30°, and an absolute value of a difference between the wavelengths, |?0(UV)??30(UV),| is ?5 nm.Type: GrantFiled: March 16, 2016Date of Patent: September 10, 2019Assignee: AGC Inc.Inventors: Asana Yoshioka, Kazuhiko Shiono, Hiroyuki Arishima, Hiroki Hotaka
-
Publication number: 20190227208Abstract: To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol·cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R1 is a monovalent hydrocarbon group which may have a substituent, or the like, R2 to R5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.Type: ApplicationFiled: March 29, 2019Publication date: July 25, 2019Applicant: AGC Inc.Inventors: Kazuhiko SHIONO, Asana YOSHIOKA, Shoko SUZUKI, Hiroki HOTAKA
-
Patent number: 10324240Abstract: To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol·cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R1 is a monovalent hydrocarbon group which may have a substituent, or the like, R2 to R5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.Type: GrantFiled: March 9, 2017Date of Patent: June 18, 2019Assignee: AGC Inc.Inventors: Kazuhiko Shiono, Asana Yoshioka, Shoko Suzuki, Hiroki Hotaka
-
Patent number: 10228500Abstract: An optical filter includes: an absorption layer containing a first near-infrared absorbent having a maximum absorption in a wavelength of 660 to 785 nm, and satisfying (i-1) in 620 to 670 nm, on a shorter wavelength side of a wavelength ? (DA_Tmin) exhibiting the maximum absorption, there is a wavelength ?Sh (DA_T50%) at which a transmittance becomes 50%; and a reflection layer formed of a dielectric multilayered film satisfying (ii-1) in 670 to 1200 nm, there is a near-infrared reflection band in which a transmittance with respect to light at an incident angle of 0° becomes 50% or less, and a wavelength ?Sh (A2_Ts50%) at which a transmittance of light of an s polarization component out of light at an incident angle of 30° becomes 50%, on a shorter wavelength side of the near-infrared reflection band, is positioned on a longer wavelength side of the wavelength ?Sh (DA_T50%).Type: GrantFiled: March 22, 2017Date of Patent: March 12, 2019Assignee: AGC Inc.Inventors: Yoshiharu Ooi, Kazuhiko Shiono, Asana Yoshioka, Shoko Suzuki, Hiroki Hotaka
-
Publication number: 20170192144Abstract: An optical filter includes: an absorption layer containing a first near-infrared absorbent having a maximum absorption in a wavelength of 660 to 785 nm, and satisfying (i-1) in 620 to 670 nm, on a shorter wavelength side of a wavelength ? (DA_Tmin) exhibiting the maximum absorption, there is a wavelength ?Sh (DA_T50%) at which a transmittance becomes 50%; and a reflection layer formed of a dielectric multilayered film satisfying (ii-1) in 670 to 1200 nm, there is a near-infrared reflection band in which a transmittance with respect to light at an incident angle of 0° becomes 50% or less, and a wavelength ?Sh (A2_Ts50%) at which a transmittance of light of an s polarization component out of light at an incident angle of 30° becomes 50%, on a shorter wavelength side of the near-infrared reflection band, is positioned on a longer wavelength side of the wavelength ?Sh (DA_T50%).Type: ApplicationFiled: March 22, 2017Publication date: July 6, 2017Applicant: Asahi Glass Company, LimitedInventors: Yoshiharu OOI, Kazuhiko SHIONO, Asana YOSHIOKA, Shoko SUZUKI, Hiroki HOTAKA
-
Publication number: 20170184765Abstract: To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol·cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R1 is a monovalent hydrocarbon group which may have a substituent, or the like, R2 to R5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.Type: ApplicationFiled: March 9, 2017Publication date: June 29, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kazuhiko SHIONO, Asana YOSHIOKA, Shoko SUZUKI, Hiroki HOTAKA
-
Publication number: 20160195651Abstract: Provided is an optical filter, which includes a light-absorbing layer and a light-reflecting layer and satisfies the following requirements: (i) in a spectral transmittance curve at an incident angle of 0°, an average transmittance over the 430-620 nm wavelength range is ?80%, an average transmittance over the 430-450 nm wavelength range is ?76%, an average transmittance over the 735-1100 nm wavelength range is ?5%, and an average transmittance over the 350-395 nm wavelength is ?5%; and (ii) there is a wavelength ?0(UV) with transmittance of 50% in the 400-425 nm wavelength range in the spectral transmittance curve at the incident angle of 0°, there is a wavelength ?30(UV) with transmittance of 50% in the 400-425 nm wavelength range in a spectral transmittance curve at an incident angle of 30°, and an absolute value of a difference between the wavelengths, |?0(UV)??30(UV),| is ?5 nm.Type: ApplicationFiled: March 16, 2016Publication date: July 7, 2016Applicant: Asahi Glass Company, LimitedInventors: Asana YOSHIOKA, Kazuhiko SHIONO, Hiroyuki ARISHIMA, Hiroki HOTAKA