Patents by Inventor Go Maruyama
Go Maruyama 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: 10737391Abstract: A system includes: an illumination device; and an imaging device configured to capture an image of a target which is irradiated with light by the illumination device. The illumination device includes: a light emitting unit configured to emit first polarized light; a condensing unit configured to focus light emitted from the light emitting unit; a diffusion unit configured to diffuse the light focused by the condensing unit; and a uniformization optical system configured to receive the light diffused by the diffusion unit, uniformize an illuminance distribution of the light, and emit the light. The system further including a selective transmission unit provided on an optical path from the target to an imaging element of the imaging device and configured to block the first polarized light at a predetermined blocking ratio.Type: GrantFiled: September 26, 2016Date of Patent: August 11, 2020Assignee: RICOH COMPANY, LTD.Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Go Maruyama
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Publication number: 20180272538Abstract: A system includes: an illumination device; and an imaging device configured to capture an image of a target which is irradiated with light by the illumination device. The illumination device includes: a light emitting unit configured to emit first polarized light; a condensing unit configured to focus light emitted from the light emitting unit; a diffusion unit configured to diffuse the light focused by the condensing unit; and a uniformization optical system configured to receive the light diffused by the diffusion unit, uniformize an illuminance distribution of the light, and emit the light. The system further comprising including a selective transmission unit provided on an optical path from the target to an imaging element of the imaging device and configured to block the first polarized light at a predetermined blocking ratio.Type: ApplicationFiled: September 26, 2016Publication date: September 27, 2018Inventors: Tatsuya TAKAHASHI, Kazuhiro FUJITA, Go MARUYAMA
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Patent number: 9958265Abstract: A specimen measuring device includes: a light source device that irradiates a specimen surface of a specimen with illumination light from multiple illumination units at a plurality of illumination angles; a spectral camera device that is arranged above the specimen surface, spectrally separates reflected light from the specimen surface, and acquires 2D spectral information through a single image capturing operation; and a calculating unit that calculates deflection angle spectral information of the specimen surface used to measure a measurement value of a certain evaluation item of the specimen using a change in an optical geometrical condition of an illumination direction and an image capturing direction between pixels in an X axis direction and a Y axis direction of the spectral information.Type: GrantFiled: August 3, 2015Date of Patent: May 1, 2018Assignee: RICOH COMPANY, LTD.Inventors: Sho Nagai, Kensuke Masuda, Go Maruyama, Yuji Yamanaka, Naohiro Kamijo, Kenji Kagitani
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Patent number: 9638575Abstract: A measuring apparatus and a measuring method are provided. The measuring apparatus includes an optical system to condense light, a light receiving device to receive light condensed by the optical system at a plurality of light receiving positions and convert the light into an electric signal, a plurality of optical band-pass filters arranged near a lens stop of the optical system, each of the optical band-pass filters having a different spectral transmittance, a lens array arranged between the optical system and the light receiving device, the lens array having a plurality of lenses each of which is arranged substantially in parallel with a two-dimensional surface of the light receiving device, and a correction unit to correct the electric signal for each one of the plurality of light receiving positions of the light receiving device. The measuring method is performed by the measuring apparatus.Type: GrantFiled: June 2, 2014Date of Patent: May 2, 2017Assignee: Ricoh Company, Ltd.Inventors: Yuji Yamanaka, Go Maruyama, Kensuke Masuda, Sho Nagai
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Patent number: 9609292Abstract: An imaging device includes a filter unit including filter areas having different wavelength selectivities; a light receiving element array configured to receive light transmitted through the filter unit; a storage unit configured to store, for each filter area, positional information indicating a position at which light transmitted is received on the light receiving element array; an area detector configured to detect, based on the positional information, an image area corresponding to the light transmitted from an image output by the light receiving element array when light from an object enters the filter unit; and a color detector configured to detect a color of the object based on an output value of the image area. The positional information indicates a position on the light receiving element array identified by using a spectral-response-coincidence-degree indicating a degree of coincidence between a spectral responsivity of each pixel and a desired wavelength selectivity.Type: GrantFiled: March 2, 2015Date of Patent: March 28, 2017Assignee: RICOH COMPANY, LIMITEDInventors: Yuji Yamanaka, Kensuke Masuda, Go Maruyama, Sho Nagai
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Patent number: 9544514Abstract: A light field imaging system captures different images provide views that are shifted by sub-pixel amounts relative to one another. These views can be combined to produce a higher resolution digital image of the object.Type: GrantFiled: March 6, 2015Date of Patent: January 10, 2017Assignee: Ricoh Company, Ltd.Inventors: Vipin Namboodiri, Krishna Prasad Agara Venkatesha Rao, Go Maruyama
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Patent number: 9531963Abstract: The image capturing device includes an optical system that focuses lights from an object to generate optical information, a filter provided near a diaphragm position of the optical system, the filter having a plurality of types of spectral characteristics, a sensor that converts the optical information of the object to electronic data, the sensor providing a plurality of spectral transmittance values that sequentially and spatially change, and a lens array having a plurality of lenses being arranged in substantially parallel in a direction of a two-dimensional surface of the sensor.Type: GrantFiled: September 19, 2013Date of Patent: December 27, 2016Assignee: Ricoh Company, Ltd.Inventors: Yuji Yamanaka, Kensuke Masuda, Go Maruyama
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Publication number: 20160261809Abstract: A light field imaging system captures different images provide views that are shifted by sub-pixel amounts relative to one another. These views can be combined to produce a higher resolution digital image of the object.Type: ApplicationFiled: March 6, 2015Publication date: September 8, 2016Applicant: Ricoh Company, Ltd.Inventors: Vipin Namboodiri, Krishna Prasad Agara Venkatesha Rao, Go Maruyama
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Patent number: 9420242Abstract: An imaging device includes a filter, an imaging element, a lens, a spectral image generator, and an exposure adjuster. The filter includes a plurality of filter areas having different spectral transmission characteristics. The imaging element receives light transmitted through the filter and outputs image information. The lens array includes a plurality of lenses arranged approximately parallel to a light receiving surface of the imaging element and is arranged between the filter and the imaging element. The spectral image generator generates a plurality of spectral images respectively corresponding to the plurality of filter areas on the basis of the image information output by the imaging element. The exposure adjuster adjusts an exposure time of the imaging element on the basis of luminance values of the spectral images.Type: GrantFiled: April 24, 2015Date of Patent: August 16, 2016Assignee: RICOH COMPANY, LTD.Inventors: Go Maruyama, Kensuke Masuda, Yuji Yamanaka, Sho Nagai
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Patent number: 9374568Abstract: An image processing apparatus comprises: a white-balance processing unit that multiplies a first pixel that includes a plurality of colors constituting a pickup image that is picked up by an imaging unit by a gain value according to the colors and thereby generates a second pixel; a value adjusting unit that generates a third pixel by maintaining the second pixel that is equal to or smaller than a predetermined value out of the second pixel as it is, and by replacing, with the predetermined value, the second value that is larger than the predetermined value out of the second pixel; and a restoration processing unit that restores, by a restoration filter, resolution that has been reduced due to an optical system, on the third pixel.Type: GrantFiled: September 22, 2014Date of Patent: June 21, 2016Assignee: RICOH COMPANY, LTD.Inventors: Go Maruyama, Ryosuke Kasahara, Taro Sawaki
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Patent number: 9307127Abstract: An image capturing device and an image capturing system are provided. The image capturing device includes an optical system, a first filter provided near a diaphragm position of the optical system, a sensor, and a lens array. The first filter includes a plurality of filters respectively having different spectral characteristics. The sensor includes a plurality of filters respectively having different spectral characteristics. The lights from an object pass through the respective filters of the first sensor and the respective filters of the second sensor to simultaneously form a plurality of types of spectral image of the object on an image plane of the sensor.Type: GrantFiled: August 6, 2013Date of Patent: April 5, 2016Assignee: Ricoh Company, Ltd.Inventors: Kensuke Masuda, Yuji Yamanaka, Go Maruyama
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Publication number: 20160040985Abstract: A specimen measuring device includes: a light source device that irradiates a specimen surface of a specimen with illumination light from multiple illumination units at a plurality of illumination angles; a spectral camera device that is arranged above the specimen surface, spectrally separates reflected light from the specimen surface, and acquires 2D spectral information through a single image capturing operation; and a calculating unit that calculates deflection angle spectral information of the specimen surface used to measure a measurement value of a certain evaluation item of the specimen using a change in an optical geometrical condition of an illumination direction and an image capturing direction between pixels in an X axis direction and a Y axis direction of the spectral information.Type: ApplicationFiled: August 3, 2015Publication date: February 11, 2016Inventors: Sho NAGAI, Kensuke Masuda, Go Maruyama, Yuji Yamanaka, Naohiro Kamijo, Kenji Kagitani
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Patent number: 9194747Abstract: An apparatus or system of estimating a spectrum of an object includes a plurality of filters or a plurality of filter areas that respectively have spectral characteristics different from one another, wherein at least two filters or filter areas have transmittance greater than a predetermined value throughout a wavelength range subject for estimation. The image capturing apparatus or system estimates a line spectrum of an object using spectral images of the at least two filters or filter areas having transmittance greater than the predetermined value.Type: GrantFiled: November 19, 2013Date of Patent: November 24, 2015Assignee: Ricoh Company, Ltd.Inventors: Kensuke Masuda, Go Maruyama, Yuji Yamanaka
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Publication number: 20150326771Abstract: An imaging device includes a filter, an imaging element, a lens, a spectral image generator, and an exposure adjuster. The filter includes a plurality of filter areas having different spectral transmission characteristics. The imaging element receives light transmitted through the filter and outputs image information. The lens array includes a plurality of lenses arranged approximately parallel to a light receiving surface of the imaging element and is arranged between the filter and the imaging element. The spectral image generator generates a plurality of spectral images respectively corresponding to the plurality of filter areas on the basis of the image information output by the imaging element. The exposure adjuster adjusts an exposure time of the imaging element on the basis of luminance values of the spectral images.Type: ApplicationFiled: April 24, 2015Publication date: November 12, 2015Inventors: Go MARUYAMA, Kensuke Masuda, Yuji Yamanaka, Sho Nagai
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Publication number: 20150256801Abstract: An imaging device includes a filter unit including filter areas having different wavelength selectivities; a light receiving element array configured to receive light transmitted through the filter unit; a storage unit configured to store, for each filter area, positional information indicating a position at which light transmitted is received on the light receiving element array; an area detector configured to detect, based on the positional information, an image area corresponding to the light transmitted from an image output by the light receiving element array when light from an object enters the filter unit; and a color detector configured to detect a color of the object based on an output value of the image area. The positional information indicates a position on the light receiving element array identified by using a spectral-response-coincidence-degree indicating a degree of coincidence between a spectral responsivity of each pixel and a desired wavelength selectivity.Type: ApplicationFiled: March 2, 2015Publication date: September 10, 2015Applicant: RICOH COMPANY, LIMITEDInventors: Yuji YAMANAKA, Kensuke MASUDA, Go MARUYAMA, Sho NAGAI
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Publication number: 20150092080Abstract: An image processing apparatus comprises: a white-balance processing unit that multiplies a first pixel that includes a plurality of colors constituting a pickup image that is picked up by an imaging unit by a gain value according to the colors and thereby generates a second pixel; a value adjusting unit that generates a third pixel by maintaining the second pixel that is equal to or smaller than a predetermined value out of the second pixel as it is, and by replacing, with the predetermined value, the second value that is larger than the predetermined value out of the second pixel; and a restoration processing unit that restores, by a restoration filter, resolution that has been reduced due to an optical system, on the third pixel.Type: ApplicationFiled: September 22, 2014Publication date: April 2, 2015Inventors: Go MARUYAMA, Ryosuke Kasahara, Taro Sawaki
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Publication number: 20140375994Abstract: A measuring apparatus and a measuring method are provided. The measuring apparatus includes an optical system to condense light, a light receiving device to receive light condensed by the optical system at a plurality of light receiving positions and convert the light into an electric signal, a plurality of optical band-pass filters arranged near a lens stop of the optical system, each of the optical band-pass filters having a different spectral transmittance, a lens array arranged between the optical system and the light receiving device, the lens array having a plurality of lenses each of which is arranged substantially in parallel with a two-dimensional surface of the light receiving device, and a correction unit to correct the electric signal for each one of the plurality of light receiving positions of the light receiving device. The measuring method is performed by the measuring apparatus.Type: ApplicationFiled: June 2, 2014Publication date: December 25, 2014Inventors: Yuji YAMANAKA, Go MARUYAMA, Kensuke MASUDA, Sho NAGAI
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Patent number: 8760558Abstract: An imaging device includes a lens array including multiple lenses facing a subject; an image sensor obtaining a compound-eye image including single-eye images of the subject formed by the lenses; and a computing unit processing the compound-eye image obtained by the image sensor. The lenses have different radii of curvature and substantially the same back focal length, and the computing unit extracts an in-focus image from the compound-eye image.Type: GrantFiled: December 3, 2010Date of Patent: June 24, 2014Assignee: Ricoh Company, Ltd.Inventors: Nobuhiro Morita, Go Maruyama, Sadao Takahashi, Jun Watanabe, Toshimichi Hagiya, Shin Aoki, Ikuo Maeda
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Publication number: 20140152983Abstract: An apparatus or system of estimating a spectrum of an object includes a plurality of filters or a plurality of filter areas that respectively have spectral characteristics different from one another, wherein at least two filters or filter areas have transmittance greater than a predetermined value throughout a wavelength range subject for estimation. The image capturing apparatus or system estimates a line spectrum of an object using spectral images of the at least two filters or filter areas having transmittance greater than the predetermined value.Type: ApplicationFiled: November 19, 2013Publication date: June 5, 2014Inventors: Kensuke MASUDA, Go Maruyama, Yuji Yamanaka
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Publication number: 20140153775Abstract: A similarity determination apparatus, a similarity determination system, and a similarity determination method are provided, each of which calculates spectral information of an object, transforms the spectral information of the object into characteristic quantity, generates a similarity determination criterion from one or a plurality of items of characteristic quantity of a reference item, and checks the characteristic quantity of the object against the similarity determination criterion to determine similarity of the object with reference to the reference item.Type: ApplicationFiled: November 19, 2013Publication date: June 5, 2014Inventors: Go MARUYAMA, Kensuke Masuda, Yuji Yamanaka