Patents by Inventor Mitsuru Nagasawa
Mitsuru Nagasawa 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).
-
Publication number: 20230280851Abstract: A wearable information terminal that can be worn by a user is provided with: a main body; a display that is incorporated in the main body and includes a screen; a controller that is incorporated in the main body and executes display processing onto the screen; and an operation detector that detects input operation executed by the user with respect to the controller.Type: ApplicationFiled: May 12, 2023Publication date: September 7, 2023Inventors: Mayumi MATSUSHITA, Mitsuru NAGASAWA
-
Publication number: 20230215710Abstract: A process of detecting a thickness of a film layer to be processed or a depth of etching by using a result of detection of a signal indicating intensity of interference light having a plurality of wavelengths formed at a plurality of time instants from when plasma is formed to when the etching is completed. A start time instant is detected by using an amount of change in the intensity of the interference light. Then, a remaining film thickness or the etching amount at an arbitrary time instant is detected from a result of comparing actual data indicating the intensity of the interference light at the arbitrary time instant during the processing after the start time instant with a plurality of pieces of data for detection of the intensity of the interference light obtained in advance and associated with values of a the film thicknesses or the depths of etching.Type: ApplicationFiled: September 17, 2020Publication date: July 6, 2023Inventors: Mitsuru Nagasawa, Soichiro Eto, Tatehito Usui, Shigeru Nakamoto
-
Patent number: 11687177Abstract: A wearable information terminal that can be worn by a user is provided with: a main body; a display that is incorporated in the main body and includes a screen; a controller that is incorporated in the main body and executes display processing onto the screen; and an operation detector that detects input operation executed by the user with respect to the controller.Type: GrantFiled: July 1, 2021Date of Patent: June 27, 2023Assignee: MAXELL, LTD.Inventors: Mayumi Matsushita, Mitsuru Nagasawa
-
Patent number: 11561089Abstract: To implement, when a plurality of patterns are included in a field of view during measurement of scattered light in spectral scatterometry, removal of an influence of a pattern outside a dimension (three-dimensional shape) management target from spectral reflection intensity in the field of view without modeling the pattern outside the dimension management target. A three-dimensional shape detection apparatus 100 includes a spectral reflection intensity measurement unit configured to measure spectral reflection intensity in a field of view of a light spot by irradiating a sample 103 as a target with the light spot, and detects a three-dimensional shape in the field of view of the light spot based on the measured spectral reflection intensity.Type: GrantFiled: July 4, 2019Date of Patent: January 24, 2023Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Kenichiro Yamada, Mitsuru Nagasawa
-
Patent number: 11493759Abstract: It is an objective of this disclosure to protect a highly transparent hologram light guide plate from water vapor and ultraviolet ray, thereby suppressing deterioration of the hologram light guide plate even when employed in a head mount display used in outdoor environments. A hologram light guide plate according to this disclosure comprises a protection layer that protects a hologram layer and an intermediate layer that is placed between a glass layer and the protection layer, wherein the glass layer and the hologram layer form a transfer layer that transfers image light. The intermediate layer causes the image light to transfer only in the transfer layer in a section from an input area of the image light to an output area of the image light.Type: GrantFiled: June 16, 2020Date of Patent: November 8, 2022Assignee: HITACHI-LG DATA STORAGE, INC.Inventors: Tomoto Kawamura, Takeru Utsugi, Mitsuru Nagasawa, Hiromichi Yamakawa
-
Publication number: 20220120555Abstract: To implement, when a plurality of patterns are included in a field of view during measurement of scattered light in spectral scatterometry, removal of an influence of a pattern outside a dimension (three-dimensional shape) management target from spectral reflection intensity in the field of view without modeling the pattern outside the dimension management target. A three-dimensional shape detection apparatus 100 includes a spectral reflection intensity measurement unit configured to measure spectral reflection intensity in a field of view of a light spot by irradiating a sample 103 as a target with the light spot, and detects a three-dimensional shape in the field of view of the light spot based on the measured spectral reflection intensity.Type: ApplicationFiled: July 4, 2019Publication date: April 21, 2022Inventors: Kenichiro Yamada, Mitsuru Nagasawa
-
Publication number: 20210325984Abstract: A wearable information terminal that can be worn by a user is provided with: a main body; a display that is incorporated in the main body and includes a screen; a controller that is incorporated in the main body and executes display processing onto the screen; and an operation detector that detects input operation executed by the user with respect to the controller.Type: ApplicationFiled: July 1, 2021Publication date: October 21, 2021Inventors: Mayumi MATSUSHITA, Mitsuru NAGASAWA
-
Patent number: 11086422Abstract: A wearable information terminal that can be worn by a user is provided with: a main body; a display that is incorporated in the main body and includes a screen; a controller that is incorporated in the main body and executes display processing onto the screen; and an operation detector that detects input operation executed by the user with respect to the controller. The operation detector is disposed at a different position in the main body from the position of the screen.Type: GrantFiled: March 1, 2016Date of Patent: August 10, 2021Assignee: MAXELL, LTD.Inventors: Mayumi Matsushita, Mitsuru Nagasawa
-
Publication number: 20210033864Abstract: It is an objective of this disclosure to protect a highly transparent hologram light guide plate from water vapor and ultraviolet ray, thereby suppressing deterioration of the hologram light guide plate even when employed in a head mount display used in outdoor environments. A hologram light guide plate according to this disclosure comprises a protection layer that protects a hologram layer and an intermediate layer that is placed between a glass layer and the protection layer, wherein the glass layer and the hologram layer form a transfer layer that transfers image light. The intermediate layer causes the image light to transfer only in the transfer layer in a section from an input area of the image light to an output area of the image light.Type: ApplicationFiled: June 16, 2020Publication date: February 4, 2021Inventors: Tomoto KAWAMURA, Takeru UTSUGI, Mitsuru NAGASAWA, Hiromichi YAMAKAWA
-
Publication number: 20200057513Abstract: A wearable information terminal that can be worn by a user is provided with: a main body; a display that is incorporated in the main body and includes a screen; a controller that is incorporated in the main body and executes display processing onto the screen; and an operation detector that detects input operation executed by the user with respect to the controller. The operation detector is disposed at a different position in the main body from the position of the screen.Type: ApplicationFiled: March 1, 2016Publication date: February 20, 2020Inventors: Mayumi MATSUSHITA, Mitsuru NAGASAWA
-
Patent number: 9761264Abstract: A light information recording/reproducing apparatus can improve the optical efficiency of an optical system at the time of reproduction to thereby improve the reproduction transfer rate. An optical element (for example, an optical isolator), which removes a return light beam of a light beam, is arranged such that the light beam passes through the optical element at the time of recording information in an optical information recording medium and such that the light beam does not pass through the optical element at the time of reproducing information from the optical information recording medium.Type: GrantFiled: April 25, 2016Date of Patent: September 12, 2017Assignee: HITACHI-LG DATA STORAGE, INC.Inventors: Mitsuru Nagasawa, Kazuyoshi Yamazaki, Kenichi Shimada
-
Patent number: 9609263Abstract: In an optical unit of a projective display device which projects light source light reflected by a DMD, one prism of TIR prisms has a first boundary surface which is arranged in parallel to an emission surface of the light source light of other prism at a predetermined distance and on which the light source light from other prism is incident and a second boundary surface which is provided to face the DMD and emits the light source light illuminating the DMD and on which reflected light from the DMD is incident. When a swinging angle of minute mirrors of the DMD is set as ±?, a refractive index of the prisms is set as n, an angle formed by the first boundary surface and the second boundary surface is set as ?, and an emission angle of the light source light with respect to the DMD in the second boundary surface is set as ?, the swinging angle ?, the refractive index n, the angle ?, and the angle ? satisfy a predetermined relation.Type: GrantFiled: February 27, 2014Date of Patent: March 28, 2017Assignee: HITACHI-LG DATA STORAGE, INC.Inventors: Mitsuru Nagasawa, Kunikazu Onishi, Satoshi Ouchi, Toshiteru Nakamura
-
Patent number: 9551917Abstract: The projection display system has a light source unit where a first light source and a second light source respectively emitting a first and second wavelength or wavelength range of light are juxtapositionally arranged; a third light source emitting a third wavelength or wavelength range of light; an optical combiner device for combining the three wavelengths or wavelength ranges of light from the light sources; an optical device for averaging distributions of the wavelengths or wavelength ranges of light; an image display device for receiving the light transmitted through the optical device and forming image light responsive to a video signal; and a projector lens for projecting the image light onto a screen. At least two of the optical axes of the first, second, and third wavelengths or wavelength ranges of light which are incident on the optical device are not coincident with each other.Type: GrantFiled: October 8, 2013Date of Patent: January 24, 2017Assignee: HITACHI CONSUMER ELECTRONICS CO., LTD.Inventors: Mitsuru Nagasawa, Satoshi Ouchi, Kunikazu Ohnishi, Tomoto Kawamura
-
Publication number: 20160322077Abstract: A light information recording/reproducing apparatus can improve the optical efficiency of an optical system at the time of reproduction to thereby improve the reproduction transfer rate. An optical element (for example, an optical isolator), which removes a return light beam of a light beam, is arranged such that the light beam passes through the optical element at the time of recording information in an optical information recording medium and such that the light beam does not pass through the optical element at the time of reproducing information from the optical information recording medium.Type: ApplicationFiled: April 25, 2016Publication date: November 3, 2016Applicant: HITACHI-LG DATA STORAGE, INC.Inventors: Mitsuru NAGASAWA, Kazuyoshi YAMAZAKI, Kenichi SHIMADA
-
Publication number: 20140320826Abstract: In an optical unit of a projective display device which projects light source light reflected by a DMD, one prism of TIR prisms has a first boundary surface which is arranged in parallel to an emission surface of the light source light of other prism at a predetermined distance and on which the light source light from other prism is incident and a second boundary surface which is provided to face the DMD and emits the light source light illuminating the DMD and on which reflected light from the DMD is incident. When a swinging angle of minute mirrors of the DMD is set as ±?, a refractive index of the prisms is set as n, an angle formed by the first boundary surface and the second boundary surface is set as ?, and an emission angle of the light source light with respect to the DMD in the second boundary surface is set as ?, the swinging angle ?, the refractive index n, the angle ?, and the angle ? satisfy a predetermined relation.Type: ApplicationFiled: February 27, 2014Publication date: October 30, 2014Applicant: HITACHI MEDIA ELECTRONICS CO., LTD.Inventors: Mitsuru NAGASAWA, Kunikazu ONISHI, Satoshi OUCHI, Toshiteru NAKAMURA
-
Publication number: 20140098349Abstract: The projection display system has a light source unit where a first light source and a second light source respectively emitting a first and second wavelength or wavelength range of light are juxtapositionally arranged; a third light source emitting a third wavelength or wavelength range of light; an optical combiner device for combining the three wavelengths or wavelength ranges of light from the light sources; an optical device for averaging distributions of the wavelengths or wavelength ranges of light; an image display device for receiving the light transmitted through the optical device and forming image light responsive to a video signal; and a projector lens for projecting the image light onto a screen. At least two of the optical axes of the first, second, and third wavelengths or wavelength ranges of light which are incident on the optical device are not coincident with each other.Type: ApplicationFiled: October 8, 2013Publication date: April 10, 2014Applicant: Hitachi Media Electronics Co., Ltd.Inventors: Mitsuru NAGASAWA, Satoshi OUCHI, Kunikazu ONISHI, Tomoto KAWAMURA
-
Publication number: 20140036648Abstract: Disclosed is an optical disc device that provides a stable servo signal with a simple configuration during the use of an objective lens showing significant color aberration. At time T0, which is before the start of a write operation (time T2), a defocus application circuit 111 generates a defocus signal DF1 to be added to a focusing error signal FES. A tracking signal gain control circuit 113 changes a tracking signal gain correction amount to be given to a tracking error signal TES to TG1. The defocus signal generated from the defocus application circuit terminates at substantially the same time the write operation starts (time T2). After the focusing error signal FES is no longer offset (at time T3), the tracking signal gain correction amount generated from the tracking signal gain control circuit 113 is restored to a reference value.Type: ApplicationFiled: August 2, 2013Publication date: February 6, 2014Applicant: HITACHI MEDIA ELECTRONICS CO., LTD.Inventors: Mitsuru NAGASAWA, Kazuyoshi YAMAZAKI, Shinsuke ONOE
-
Publication number: 20120051204Abstract: An optical pickup compatible with two wavelengths such as an optical pickup having a two-wavelength, multi-laser source unit to be compatible with both DVDs and CDs prevents, in a simply structured optical system, error signal quality deterioration caused by relative shifting between laser beams and realizes detection of focus and tracking error signals. The optical system is provided with an optical waveguide device and a photodetector. The optical waveguide device includes a holographic diffraction grating having three regions divided by two approximately parallel division lines which extend respectively passing the optical axes of a laser beam for DVD and a laser beam for CD. The photodetector has plural light receiving surfaces each divided into three regions. This allows reliable focus and tracking error signals to be detected during both DVD reproduction and CD reproduction.Type: ApplicationFiled: March 24, 2011Publication date: March 1, 2012Inventors: Kunikazu OHNISHI, Kazuyoshi YAMAZAKI, Mitsuru NAGASAWA
-
Patent number: 6906843Abstract: An optical isolator comprising a combination of an optical isolator main body and a holder holding the optical isolator main body, the optical isolator main body including a Faraday rotator element, a polarizer and an analyzer disposed at the front and back of the Faraday rotator element, and permanent magnets disposed on the outside of the Faraday rotator element, the polarizer and the analyzer.Type: GrantFiled: November 22, 2004Date of Patent: June 14, 2005Assignee: FDK CorporationInventors: Mitsuru Nagasawa, Hirotaka Kawai
-
Publication number: 20050094239Abstract: An optical isolator comprising a combination of an optical isolator main body and a holder holding the optical isolator main body, the optical isolator main body including a Faraday rotator element, a polarizer and an analyzer disposed at the front and back of the Faraday rotator element, and permanent magnets disposed on the outside of the Faraday rotator element, the polarizer and the analyzer.Type: ApplicationFiled: November 22, 2004Publication date: May 5, 2005Applicant: FDK CORPORATIONInventors: Mitsuru Nagasawa, Hirotaka Kawai