Patents by Inventor Hidetoshi Hashizume
Hidetoshi Hashizume 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: 11452963Abstract: A dust collector includes a housing, a dust collecting bag that is installed in the housing and has an air permeability, a supply section that has a pipe coupled to the dust collecting bag, and supplies a powder into the housing via the pipe, a negative pressure generating section that generates a negative pressure in the housing, and a vibration applying section that applies a vibration to the dust collecting bag. The dust collecting bag includes a top surface, a bottom surface, and a side surface coupling the top surface and the bottom surface with each other, and a vibration transmitted to the top surface is larger than a vibration transmitted to the bottom surface.Type: GrantFiled: March 24, 2020Date of Patent: September 27, 2022Assignee: Seiko Epson CorporationInventors: Hiroshi Tanaka, Shigeo Fujita, Minoru Honjo, Hidetoshi Hashizume
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Publication number: 20200306679Abstract: A dust collector includes a housing, a dust collecting bag that is installed in the housing and has an air permeability, a supply section that has a pipe coupled to the dust collecting bag, and supplies a powder into the housing via the pipe, a negative pressure generating section that generates a negative pressure in the housing, and a vibration applying section that applies a vibration to the dust collecting bag. The dust collecting bag includes a top surface, a bottom surface, and a side surface coupling the top surface and the bottom surface with each other, and a vibration transmitted to the top surface is larger than a vibration transmitted to the bottom surface.Type: ApplicationFiled: March 24, 2020Publication date: October 1, 2020Inventors: Hiroshi Tanaka, Shigeo Fujita, Minoru Honjo, Hidetoshi Hashizume
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Patent number: 8267529Abstract: An optical device includes: a housing; and a reflection member disposed at a predetermined position within the housing, the housing includes a receiving opening through which the reflection member is inserted to be accommodated in the housing, and an attachment unit to which the reflection member is attached, the reflection member includes a front portion which has a reflection area for reflecting supplied light, a back portion positioned on the side opposite to the front portion, and a fixing unit positioned within the surface of the back portion and fixed to the attachment unit, and the fixing unit has an opening into which a position control jig inserted in an attachment direction of attaching the reflection member to the attachment unit through the receiving opening is inserted.Type: GrantFiled: February 16, 2010Date of Patent: September 18, 2012Assignee: Seiko Epson CorporationInventors: Shohei Fujisawa, Hidetoshi Hashizume, Toshihiro Hieda, Kazuyuki Iinuma
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Publication number: 20110132557Abstract: A screen unit includes: a screen which has a first side and a second side opposing to each other in a first direction and extending substantially in parallel with each other; a first supporting portion extending along the first side to support the first side; a second supporting portion extending along the second side to support the second side; and a plurality of connecting mechanisms each of which extends between the first supporting portion and the second supporting portion, and expands and contracts in the first direction to move the second supporting portion close to and away from the first supporting portion, wherein the plurality of connecting mechanisms are disposed in parallel with the first supporting portion, and are located almost linearly symmetric with respect to a center line connecting approximately the center of the first side and approximately the center of the second side.Type: ApplicationFiled: December 7, 2010Publication date: June 9, 2011Applicant: Seiko Epson CorporationInventors: Kiyoshi Kuroi, Hidetoshi Hashizume
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Publication number: 20100208218Abstract: An optical device includes: a housing; and a reflection member disposed at a predetermined position within the housing, the housing includes a receiving opening through which the reflection member is inserted to be accommodated in the housing, and an attachment unit to which the reflection member is attached, the reflection member includes a front portion which has a reflection area for reflecting supplied light, a back portion positioned on the side opposite to the front portion, and a fixing unit positioned within the surface of the back portion and fixed to the attachment unit, and the fixing unit has an opening into which a position control jig inserted in an attachment direction of attaching the reflection member to the attachment unit through the receiving opening is inserted.Type: ApplicationFiled: February 16, 2010Publication date: August 19, 2010Applicant: Seiko Epson CorporationInventors: Shohei FUJISAWA, Hidetoshi HASHIZUME, Toshihiro HIEDA, Kazuyuki IINUMA
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Patent number: 7661823Abstract: A prism structure that includes: a plurality of liquid crystal devices each include a liquid crystal panel and a light emitting-side optical element, and generate an image light through modulation of any of a plurality of color lights in accordance with image information; and a cross dichroic prism that combines the image lights coming from the liquid crystal devices. In the prism structure, each of the liquid crystal devices further includes: a fixture member that is fixed to the cross dichroic prism; a retention member that keeps hold of the liquid crystal panel, and is fixed to the fixture member; and a light emitting-side optical element retention member that keeps hold of the light emitting-side optical element, and is rotation-adjustable about an illumination axis. The light emitting-side optical element retention member is rotation-adjusted about the illumination axis before fixation to the retention member.Type: GrantFiled: January 23, 2006Date of Patent: February 16, 2010Assignee: Seiko Epson CorporationInventors: Yoshihiro Terada, Takashi Saegusa, Hidetoshi Hashizume, Eiji Yokoyama
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Patent number: 7303644Abstract: A manufacturing method of an optical device includes an optical component housing operation S1 for housing a plurality of optical components in a casing body, an optical component positioning operation S2 for adjusting the positions of the optical components by shifting the optical components to position by positioning members at predetermined positions on an illumination optical axis of a light beam irradiated by a light source, and an optical component position fixing operation S3 for fixing the positions of the optical components on the casing body after the optical component positioning operation S2. The optical component housing operation further includes a positioning member inserting process for inserting the positioning members to holes on the casing body, an optical component housing process for housing the optical components in the casing body, and a positioning member abutting process by which the positioning members abut on the optical components.Type: GrantFiled: March 8, 2004Date of Patent: December 4, 2007Assignee: Seiko Epson CorporationInventors: Masashi Kitabayashi, Hideo Yamaguchi, Hidetoshi Hashizume, Shohei Fujisawa, Kazuyuki Iinuma
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Patent number: 7222976Abstract: An optical device is disposed with: a swollen portion that is attached to the underside of a reflective surface of a reflective mirror, swells in an outward direction of the reflective mirror and is configured as part of a spherical surface. A mirror orientation adjustment lever that is attached to the underside of the reflective surface of the reflective mirror, extends along the underside of the reflective mirror, and protrudes from an end edge of the reflective mirror when seen planarly. The reflective mirror is disposed along a side wall of an optical parts-use casing. The side wall includes, at the position where the reflective mirror is disposed, a spherical concave portion corresponding to a spherical surface of the swollen portion, and when the reflective mirror is disposed at the disposition position, the swollen portion is supported by the spherical concave portion.Type: GrantFiled: January 12, 2005Date of Patent: May 29, 2007Assignee: Seiko Epson CorporationInventors: Masashi Kitabayashi, Kazuyuki Iinuma, Hiroshi Kobayashi, Hidetoshi Hashizume
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Patent number: 7210796Abstract: An optical apparatus with plural optical components, including a reflection mirror provided in an optical path of light beams emitted from a light source, and a case for housing the optical components in a predetermined position with respect to the light beams. The optical apparatus has a convex curved surface protruding to the surface of the reflection mirror, and a pair of fixing parts mounted to the back surface of the reflection mirror to sandwich the protruded part therebetween. The case is formed from a component housing member having an opening through which the plural optical components are housed and a lid member for closing the opening. The side wall is provided with fixing grooves to house the reflection mirror in the case and to guide the pair the of fixing parts in placing the reflection mirror in the case.Type: GrantFiled: August 30, 2005Date of Patent: May 1, 2007Assignee: Seiko Epson CorporationInventors: Kazuyuki Iinuma, Hidetoshi Hashizume, Hiroshi Kobayashi
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Patent number: 7175283Abstract: Exemplary embodiments provide an optical device, optical device manufacturing method, and projector that can easily position an optical modulation element in a predetermined position. The optical device includes an optical modulation element holder to hold an optical modulation element thereon so as to be able to transfer heat to cooling fluid within cooling chambers, a plurality of fluid circulation members connected in communication to the cooling chambers, and a cooling fluid relay section that, disposed at a predetermined position relative to the optical axis of a luminous flux emitted from a light source, relays cooling fluid transferred via the plurality of fluid circulation members. Out of the plurality of fluid circulation members, fluid circulation members whose one-side end are connected in communication to the cooling chambers of the optical modulation element holder are formed so that the another-side end thereof protrudes toward a luminous flux emergent side.Type: GrantFiled: March 10, 2005Date of Patent: February 13, 2007Assignee: Seiko Epson CorporationInventors: Masashi Kitabayashi, Hidetoshi Hashizume
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Patent number: 7152982Abstract: An optical component casing (25) having a plurality of holes penetrating toward the inside thereof includes a casing body which is constituted of a container (25A), in which a plurality of optical components are housed and arranged therein, and a lid (25B), and a plurality of positioning members (253) for positioning the plurality of optical components at predetermined positions in the casing body. The plurality of positioning members (253) abut on the optical components by being inserted through the plurality of holes to position the optical components at the predetermined positions on an illumination optical axis of light beam irradiated by a light source.Type: GrantFiled: March 10, 2004Date of Patent: December 26, 2006Assignee: Seiko Epson CorporationInventors: Masashi Kitabayashi, Hideo Yamaguchi, Hidetoshi Hashizume, Shohei Fujisawa, Kazuyuki Iinuma
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Publication number: 20060209265Abstract: A prism structure that includes: a plurality of liquid crystal devices each include a liquid crystal panel and a light emitting-side optical element, and generate an image light through modulation of any of a plurality of color lights in accordance with image information; and a cross dichroic prism that combines the image lights coming from the liquid crystal devices. In the prism structure, each of the liquid crystal devices further includes: a fixture member that is fixed to the cross dichroic prism; a retention member that keeps hold of the liquid crystal panel, and is fixed to the fixture member; and a light emitting-side optical element retention member that keeps hold of the light emitting-side optical element, and is rotation-adjustable about an illumination axis. The light emitting-side optical element retention member is rotation-adjusted about the illumination axis before fixation to the retention member.Type: ApplicationFiled: January 23, 2006Publication date: September 21, 2006Applicant: Seiko Epson CorporationInventors: Yoshihiro Terada, Takashi Saegusa, Hidetoshi Hashizume, Eiji Yokoyama
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Patent number: 7046461Abstract: A manufacturing apparatus (100) of an optical unit includes an optical component positioning jig (300) that has a plurality of holders for holding a plurality of optical components and is positioned at a designed predetermined position of the plurality of optical component, and a table (200) that holds an optical component casing so that a part of the optical component positioning jig (300) can be inserted into an opening formed on the optical component casing.Type: GrantFiled: March 8, 2004Date of Patent: May 16, 2006Assignee: Seiko Epson CorporationInventors: Hideo Yamaguchi, Masashi Kitabayashi, Hidetoshi Hashizume, Shohei Fujisawa
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Publication number: 20060050253Abstract: Aspects of the invention can provide an optical apparatus including plural optical components including a reflection mirror provided in an optical path of a light beams emitted from a light source, and a case for optical components for housing and holding the plural optical components in a predetermined position with respect to the illumination optical axis of the light beams. The optical apparatus can further include a protruded part mounted to a back surface of a reflection surface of the reflection mirror, having a convex curved surface protruded to the outside of the surface of the reflection mirror and being in contact with the side wall when the reflection mirror is set along the side wall, and a pair of fixing parts respectively mounted to the back surface of the reflection surface of the reflection mirror so as to sandwich the protruded part therebetween and projecting to the outside of the reflection mirror.Type: ApplicationFiled: August 30, 2005Publication date: March 9, 2006Applicant: Seiko Epson CorporationInventors: Kazuyuki Iinuma, Hidetoshi Hashizume, Hiroshi Kobayashi
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Publication number: 20050200813Abstract: Exemplary embodiments provide an optical device, optical device manufacturing method, and projector that can easily position an optical modulation element in a predetermined position. The optical device includes an optical modulation element holder to hold an optical modulation element thereon so as to be able to transfer heat to cooling fluid within cooling chambers, a plurality of fluid circulation members connected in communication to the cooling chambers, and a cooling fluid relay section that, disposed at a predetermined position relative to the optical axis of a luminous flux emitted from a light source, relays cooling fluid transferred via the plurality of fluid circulation members. Out of the plurality of fluid circulation members, fluid circulation members whose one-side end are connected in communication to the cooling chambers of the optical modulation element holder are formed so that the another-side end thereof protrudes toward a luminous flux emergent side.Type: ApplicationFiled: March 10, 2005Publication date: September 15, 2005Applicant: Seiko Epson CorporationInventors: Masashi Kitabayashi, Hidetoshi Hashizume
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Publication number: 20050157276Abstract: An optical device is disposed with: a swollen portion that is attached to the underside of a reflective surface of a reflective mirror, swells in an outward direction of the reflective mirror and is configured as part of a spherical surface. A mirror orientation adjustment lever that is attached to the underside of the reflective surface of the reflective mirror, extends along the underside of the reflective mirror, and protrudes from an end edge of the reflective mirror when seen planarly. The reflective mirror is disposed along a side wall of an optical parts-use casing. The side wall includes, at the position where the reflective mirror is disposed, a spherical concave portion corresponding to a spherical surface of the swollen portion, and when the reflective mirror is disposed at the disposition position, the swollen portion is supported by the spherical concave portion.Type: ApplicationFiled: January 12, 2005Publication date: July 21, 2005Applicant: SEIKO EPSON CORPORATIONInventors: Masashi Kitabayashi, Kazuyuki Iinuma, Hiroshi Kobayashi, Hidetoshi Hashizume
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Patent number: 6903827Abstract: In order to adjust position of color combining optical system relative to a color separating optical system accommodated in an optical component casing for producing a projector, a white laser beam is irradiated on an optical axis of a light beam passing through the optical component casing and is separated by the color separating optical system, the separated respective color lights being incident on a light-incident end surface of the color combining optical system to be combined, the combined light beam being detected by a sensor, in which the position is adjusted while detecting the combined light beam.Type: GrantFiled: February 13, 2002Date of Patent: June 7, 2005Assignee: Seiko Epson CorporationInventors: Masashi Kitabayashi, Shohei Fujisawa, Hidetoshi Hashizume
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Publication number: 20050030648Abstract: A manufacturing apparatus (100) of an optical unit includes an optical component positioning jig (300) that has a plurality of holders for holding a plurality of optical components and is positioned at a designed predetermined position of the plurality of optical component, and a table (200) that holds an optical component casing so that a part of the optical component positioning jig (300) can be inserted into an opening formed on the optical component casing.Type: ApplicationFiled: March 8, 2004Publication date: February 10, 2005Applicant: SEIKO EPSON CORPORATIONInventors: Hideo Yamaguchi, Masashi Kitabayashi, Hidetoshi Hashizume, Shohei Fujisawa
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Publication number: 20050018151Abstract: An optical component casing (25) having a plurality of holes penetrating toward the inside thereof includes a casing body which is constituted of a container (25A), in which a plurality of optical components are housed and arranged therein, and a lid (25B), and a plurality of positioning members (253) for positioning the plurality of optical components at predetermined positions in the casing body. The plurality of positioning members (253) abut on the optical components by being inserted through the plurality of holes to position the optical components at the predetermined positions on an illumination optical axis of light beam irradiated by a light source.Type: ApplicationFiled: August 2, 2004Publication date: January 27, 2005Applicant: SEIKO EPSON CORPORATIONInventors: Masashi Kitabayashi, Hideo Yamaguchi, Hidetoshi Hashizume, Shohei Fujisawa, Kazuyuki Iinuma
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Publication number: 20040256746Abstract: A manufacturing method of an optical device includes an optical component housing operation S1 for housing a plurality of optical components in a casing body, an optical component positioning operation S2 for adjusting the positions of the optical components by shifting the optical components to position by positioning members at predetermined positions on an illumination optical axis of a light beam irradiated by a light source, and an optical component position fixing operation S3 for fixing the positions of the optical components on the casing body after the optical component positioning operation S2. The optical component housing operation further includes a positioning member inserting process for inserting the positioning members to holes on the casing body, an optical component housing process for housing the optical components in the casing body, and a positioning member abutting process by which the positioning members abut on the optical components.Type: ApplicationFiled: March 8, 2004Publication date: December 23, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Masashi Kitabayashi, Hideo Yamaguchi, Hidetoshi Hashizume, Shohei Fujisawa, Kazuyuki Iinuma