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Takeharu Okuno patents

Recent patents with Takeharu Okuno listed as an inventor - additional entries may be under other spellings.


Takeharu Okuno - Related organizations: Canon Kabushiki Kaisha patents, Osaka Prefecture University patents, Osaka Prefecture Univeresity patents

Optical element, and optical system and optical apparatus using same

12/24/15 - 20150369967 - The optical element of the present invention has an anti-reflection film formed on a substrate. Here, the anti-reflection film comprises a first layer formed on the substrate; a second layer formed on the first layer and consisting of a material different from that of the first layer; and a third
Inventors: Takeharu Okuno, Rie Ishimatsu

Antireflection coating film, and optical element, optical system, and optical apparatus having the same

12/12/13 - 20130329295 - An antireflection coating film formed on an optical base member includes: a first layer having a refractive index of N1 and a film thickness of D1; a second layer having a refractive index of N2 and a film thickness of D2; and a third layer formed of a fine concavo-convex
Inventors: Takeharu Okuno

Optical element, and optical system and optical apparatus using same

01/31/13 - 20130027779 - The optical element of the present invention has an anti-reflection film formed on a substrate. Here, the anti-reflection film comprises a first layer formed on the substrate; a second layer formed on the first layer and consisting of a material different from that of the first layer; and a third
Inventors: Takeharu Okuno, Rie Ishimatsu

Optical system, barrel, and optical instrument using same

11/01/12 - 20120275027 - Provided is an optical system having at least two or more lenses, wherein at least one of the lenses comprises an anti-reflection film formed by a wetting method on a part of or the entirety of the light beam effective surface thereof, and wherein at least one of the lenses
Inventors: Takeharu Okuno

Optical element and optical system

10/18/12 - 20120262794 - The optical element includes a base member configured to have an optical surface, a concave-convex structure configured to have an average pitch smaller than a shortest wavelength of a use wavelength range, and an intermediate layer formed between the optical surface and the concave-convex structure, made of a material different
Inventors: Kazue Uchida, Takeharu Okuno, Daisuke Sano

Optical transparent member and optical system using the same

08/04/11 - 20110189389 - It is an object to provide an optical transparent member capable of maintaining a high-performance antireflection effect for a base over a long period of time, and an optical system using the same, specifically an optical transparent member including on a base a layer containing SiO2 as a main component,
Inventors: Masayuki Yamada, Yoshinori Kotani, Hiroyuki Tanaka, Takeharu Okuno, Tsutomu Minami, Masahiro Tatsumisago, Kiyoharu Tadanaga

Optical element, method of manufacturing optical element, and imaging optical system

07/21/11 - 20110176216 - An optical element includes an optically effective area and an optically ineffective area partly or entirely coated with a coating opaque at wavelengths used. The opaque coating contains a cured product prepared from an epoxy resin and a curing agent containing an alicyclic acid anhydride. The alicyclic acid anhydride is
Inventors: Hiroshi Kawauchi, Masayuki Yamada, Takeharu Okuno, Ryo Ogawa, Tomonari Nakayama

Optical element and optical system having the same

11/25/10 - 20100296177 - where λmin is the shortest wavelength used in the optical element, nsub is the refractive index of a substrate on which the fine textured structure is formed, p is the pitch of the fine textured structure, and h is the height of the fine textured structure. The textured structure includes
Inventors: Takeharu Okuno

Optical system and optical equipment including the same

11/18/10 - 20100290133 - Provided is an optical system with an excellent anti-reflection effect and ghost suppression effect including an aspherical lens having at least one of an incident surface and an exiting surface of an optical glass formed of an aspherical surface, in which: the aspherical surface includes an anti-reflection structure formed thereon,
Inventors: Daisuke Sano, Kazuhiko Momoki, Takeharu Okuno

Optical element

08/19/10 - 20100208353 - An optical element includes an optical surface formed by a press molding method, wherein a ray effective portion of the optical surface has formed thereon an antireflection structure including a minute uneven structure, which contains a component different from that of a base of the optical element and has an
Inventors: Takeharu Okuno

Optical element and optical apparatus

04/15/10 - 20100091376 - where ns represents an effective refractive index of the first layer, nb represents a refractive index of the base member, and nA and dA respectively represent a refractive index and a thickness of the second layer.
Inventors: Daisuke Sano, Takeharu Okuno

Optical element and optical system

03/04/10 - 20100053760 - The optical element includes a base member configured to have an optical surface, a concave-convex structure configured to have an average pitch smaller than a shortest wavelength of a use wavelength range, and an intermediate layer formed between the optical surface and the concave-convex structure, made of a material different
Inventors: Kazue Uchida, Takeharu Okuno, Daisuke Sano

Optical transparent member and optical system using the same

03/26/09 - 20090081361 - It is an object to provide an optical transparent member capable of maintaining a high-performance antireflection effect for a base over a long period of time, and an optical system using the same, specifically an optical transparent member including on a base a layer containing SiO2 as a main component,
Inventors: Masayuki Yamada, Yoshinori Kotani, Hiroyuki Tanaka, Takeharu Okuno, Tsutomu Minami, Masahiro Tatsumisago, Kiyoharu Tadanaga

Optical system and image pickup apparatus having same

03/12/09 - 20090067053 - An optical system includes an optical element formed of resin. On at least one of optical surfaces on the light incidence side of the optical element formed of resin, a plurality of depressions or protrusions of a size not larger than the wavelengths of visible light is formed without a
Inventors: Kazuhiko Momoki, Sayoko Amano, Takehiko Nakai, Reona Ushigome, Takeharu Okuno, Daisuke Sano


### Takeharu Okuno patent invention listings

The bibliographic references displayed about Takeharu Okuno's patents are for a recent sample of Takeharu Okuno's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Takeharu Okuno filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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