Patents by Inventor Maiko Yasui
Maiko Yasui 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).
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Patent number: 11226485Abstract: An image projection device includes an image generation unit configured to generate a projection image; a magnifying optical system configured to magnify the projection image generated by the image generation unit and project the magnified projection image onto a projection plane; and an enclosure having an inner wall surface and being configured to accommodate the image generation unit and the magnifying optical system. The inner wall surface of the enclosure is disposed avoiding an area where converging magnification of converged incident light exceeds 15 times, the converged incident light resulting from incident light incident from outside of the enclosure onto the magnifying optical system being propagated in a direction opposite to the projection image.Type: GrantFiled: March 13, 2019Date of Patent: January 18, 2022Assignee: RICOH COMPANY, LTD.Inventors: Maiko Yasui, Tomohiro Nakajima
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Patent number: 11061227Abstract: A display device includes an image forming unit to form an image and project the image on a transmissive reflector to display a virtual image, an optical element to direct light of the image to the transmissive reflector, a wavelength selective mirror disposed between the image forming unit and the optical element and to separate infrared light from a light beam, and a shielding part to shield or attenuate infrared light. The optical element condenses external light travelling along an optical path opposite to an optical path of the light diffused. The wavelength selective mirror separates infrared light included in the external light condensed by the optical element, and the shielding part is disposed between the wavelength selective mirror and a focal point of the infrared light separated by the wavelength selective mirror. An apparatus includes the display device and the transmissive reflector.Type: GrantFiled: February 7, 2019Date of Patent: July 13, 2021Assignee: RICOH COMPANY, LTD.Inventors: Kazuhiro Fujita, Yuuki Satoh, Maiko Yasui, Takehide Ohno
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Patent number: 11048081Abstract: A display device, a display system, and a mobile object. The display device includes an image forming unit through which image light exits, an imaging optical system having a reflection plane and configured to form an image by reflecting the image light on the reflection plane, and a housing accommodating the image forming unit and the imaging optical system. The housing has a transmissive area through which the image light reflected by the imaging optical system passes through, and an inclination of the reflection plane is changed to reduce a project area of the reflection plane. The project area is projected to outside of the housing through the transmissive area. The display system includes the display device, and a reflector configured to reflect the image light reflected by the imaging optical system. The mobile object includes the display system, and the reflector is a front windshield.Type: GrantFiled: October 21, 2019Date of Patent: June 29, 2021Assignee: RICOH COMPANY, LTD.Inventors: Yuuki Satoh, Kazuhiro Fujita, Maiko Yasui
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Publication number: 20200166750Abstract: A display device and a mobile body. The display device includes a light source, an image forming unit configured to receive irradiation light emitted from the light source and emit image light for forming an image, a screen on which the image light forms an image, a housing configured to contain the light source and the image forming unit, and a holding member configured to hold the screen and attached to the housing. The mobile body includes the display device, and the screen is configured to diffuse and project the image light. The mobile body further includes a front glass configured to reflect the image light, and an image-forming optical system configured to project, toward the front glass, the image light projected from the screen.Type: ApplicationFiled: September 23, 2019Publication date: May 28, 2020Inventor: Maiko YASUI
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Publication number: 20200150433Abstract: A display device, a display system, and a mobile object. The display device includes an image forming unit through which image light exits, an imaging optical system having a reflection plane and configured to form an image by reflecting the image light on the reflection plane, and a housing accommodating the image forming unit and the imaging optical system. The housing has a transmissive area through which the image light reflected by the imaging optical system passes through, and an inclination of the reflection plane is changed to reduce a project area of the reflection plane. The project area is projected to outside of the housing through the transmissive area. The display system includes the display device, and a reflector configured to reflect the image light reflected by the imaging optical system. The mobile object includes the display system, and the reflector is a front windshield.Type: ApplicationFiled: October 21, 2019Publication date: May 14, 2020Inventors: Yuuki SATOH, Kazuhiro FUJITA, Maiko YASUI
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Publication number: 20190285887Abstract: An image projection device includes an image generation unit configured to generate a projection image; a magnifying optical system configured to magnify the projection image generated by the image generation unit and project the magnified projection image onto a projection plane; and an enclosure having an inner wall surface and being configured to accommodate the image generation unit and the magnifying optical system. The inner wall surface of the enclosure is disposed avoiding an area where converging magnification of converged incident light exceeds 15 times, the converged incident light resulting from incident light incident from outside of the enclosure onto the magnifying optical system being propagated in a direction opposite to the projection image.Type: ApplicationFiled: March 13, 2019Publication date: September 19, 2019Inventors: Maiko YASUI, Tomohiro NAKAJIMA
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Publication number: 20190285884Abstract: A display device includes an image forming unit to form an image and project the image on a transmissive reflector to display a virtual image, an optical element to direct light of the image to the transmissive reflector, a wavelength selective mirror disposed between the image forming unit and the optical element and to separate infrared light from a light beam, and a shielding part to shield or attenuate infrared light. The optical element condenses external light travelling along an optical path opposite to an optical path of the light diffused. The wavelength selective mirror separates infrared light included in the external light condensed by the optical element, and the shielding part is disposed between the wavelength selective mirror and a focal point of the infrared light separated by the wavelength selective mirror. An apparatus includes the display device and the transmissive reflector.Type: ApplicationFiled: February 7, 2019Publication date: September 19, 2019Applicant: RICOH COMPANY, LTD.Inventors: Kazuhiro FUJITA, Yuuki SATOH, Maiko YASUI, Takehide OHNO
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Patent number: 9854225Abstract: An imaging unit includes a plurality of imaging devices configured to capture images of an object; a circuit substrate configured to generate image data based on the images captured by the imaging devices; a chassis that holds the imaging devices; and a heat transfer member including a contacting portion configured to contact an installed member in a case where the imaging unit is installed on the installed member. The heat transfer member contacts the chassis or the circuit substrate, and heat conductivity of the heat transfer member is greater than the heat conductivity of the chassis.Type: GrantFiled: June 16, 2015Date of Patent: December 26, 2017Assignee: RICOH COMPANY, LTD.Inventors: Tomonori Kimura, Shu Kambe, Maiko Yasui, Shuji Takamatsu, Masashi Adachi
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Publication number: 20160006911Abstract: An imaging unit includes a plurality of imaging devices configured to capture images of an object; a circuit substrate configured to generate image data based on the images captured by the imaging devices; a chassis that holds the imaging devices; and a heat transfer member including a contacting portion configured to contact an installed member in a case where the imaging unit is installed on the installed member. The heat transfer member contacts the chassis or the circuit substrate, and heat conductivity of the heat transfer member is greater than the heat conductivity of the chassis.Type: ApplicationFiled: June 16, 2015Publication date: January 7, 2016Inventors: Tomonori KIMURA, Shu KAMBE, Maiko YASUI, Shuji TAKAMATSU, Masashi ADACHI
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Patent number: 8254128Abstract: A heat-transfer mechanism which transfers heat of a heat-generating component mounted on a board to a housing includes a heat-transfer plate having a bottom face portion which has contact with the heat-generating component, a first heat-transfer portion which is screwed near one end portion of the housing and a second heat-transfer portion which is screwed near the other end portion of the housing.Type: GrantFiled: April 15, 2010Date of Patent: August 28, 2012Assignee: Ricoh Company, Ltd.Inventor: Maiko Yasui
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Publication number: 20100263851Abstract: A heat-transfer mechanism which transfers heat of a heat-generating component mounted on a board to a housing includes a heat-transfer plate having a bottom face portion which has contact with the heat-generating component, a first heat-transfer portion which is screwed near one end portion of the housing and a second heat-transfer portion which is screwed near the other end portion of the housing.Type: ApplicationFiled: April 15, 2010Publication date: October 21, 2010Inventor: Maiko YASUI