Patents by Inventor Hidetaka Hoshino
Hidetaka Hoshino 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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Publication number: 20140160546Abstract: In a scanning optical apparatus, an illumination optical system has a diffractive power ?dM and a refractive power ?nM in a main scanning direction, and a ratio ?nM/?dM in the main scanning direction for a focal length fi in a range of 10-22 mm satisfies: g2(fi)??nM/?dM?g1(fi), where A(Z)=(1.897×107)Z2+6744Z+0.5255, B(Z)=(2.964×107)Z2+5645Z+0.6494, C(Z)=(3.270×107)Z2+3589Z+0.5250, D(Z)=(5.016×107)Z2+4571Z+0.8139, g1(fi)=fi{D(Z)?B(Z)}/12?5D(Z)/6+11B(Z)/6, g2(fi)=fi{C(Z)?D(Z)}/12?5C(Z)/6+11A(Z)/6.Type: ApplicationFiled: December 6, 2013Publication date: June 12, 2014Inventors: Hidetaka HOSHINO, Yoshifumi NAKAMURA, Hitoshi FUJINO
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Publication number: 20140085696Abstract: In a scanning optical apparatus, an illumination optical system has a diffractive power ?dM in a main scanning direction, a diffractive power ?dS in a sub-scanning direction, a refractive power ?nM in the main scanning direction, and a refractive power ?nS in the sub-scanning direction. A ratio ?nM/?dM in the main scanning direction for a focal length fi in a range of 10-30 mm satisfies: g2(fi)??nM/?dM?g1(fi), where A(Z)=(3.532×107)Z2+3023Z+0.7010, B(Z)=(5.719×107)Z2+4169Z+0.7678, C(Z)=(1.727×107)Z2+3244Z+0.4217, D(Z)=(1.373×108)Z2+3232Z+1.224, g1(fi)=fi{D(Z)?B(Z)}/20?0.5D(Z)+1.5B(Z), g2(fi)=fi{C(Z)?D(Z)}/20?0.5C(Z)+1.5A(Z), and a ratio ?nS/?dS in the sub-scanning direction satisfies: ?nS/?dS<1.3.Type: ApplicationFiled: September 26, 2013Publication date: March 27, 2014Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hidetaka HOSHINO, Yoshifumi NAKAMURA, Hitoshi FUJINO
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Patent number: 7959304Abstract: A projector which is configured to project an image by means of a projection light onto a surface approximately parallel, or a surface approximately perpendicular, to an installation surface. According to aspects of the disclosure, the projector may include a first reflecting surface which reflects the projection light toward the approximately parallel surface; a second reflecting surface which reflects the projection light toward the approximately perpendicular surface; and a reflecting surface switching section which can switchably place the first reflecting surface and the second reflecting surface in an optical path of the projection light.Type: GrantFiled: July 23, 2008Date of Patent: June 14, 2011Assignee: Brother Kogyo Kabushiki KaishaInventors: Hidetaka Hoshino, Yoshito Hosoi, Tomoyuki Okamoto
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Publication number: 20090027628Abstract: An image by means of a projection light is projected without any distortion both onto a surface approximately parallel to an installation surface, and onto a surface approximately perpendicular to the installation surface. In a case in which reflecting surfaces are held in a horizontal condition, and a reflecting surface of a reflecting mirror on which a projection light falls is formed into a planar surface, individual light rays fall on positions on a table surface. As these positions are evenly spaced, an image projected onto the table surface becomes a non-distorted image. On the other hand, in a case in which the surfaces are held in an inclined condition, and a surface on which the projection light falls is formed into a curved surface, individual light rays caused to emerge from a light modulation device at even intervals fall on a wall surface. Incidence positions of the individual light rays being evenly spaced, an image projected onto the wall surface becomes the non-distorted image.Type: ApplicationFiled: July 23, 2008Publication date: January 29, 2009Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hidetaka HOSHINO, Yoshito Hosoi, Tomoyuki Okamoto
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Patent number: 7438416Abstract: An optometric apparatus for examining refractive power of an examinee's eye subjectively, capable of performing highly-precise examination.Type: GrantFiled: April 30, 2004Date of Patent: October 21, 2008Assignee: Nidek Co., LtdInventors: Akihiro Hayashi, Yoshinobu Hosoi, Hidetaka Hoshino
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Patent number: 7275824Abstract: A fundus camera for photographing a fundus of an eye to be examined has a system having an objective lens and a diaphragm arranged in a position approximately conjugate with a pupil with respect to the lens, for observing and photographing the fundus via the lens and the diaphragm, an optical path bifurcating member which is arranged on an optical path between the lens and the diaphragm, a system for observing an anterior segment of the eye via the lens and the optical path bifurcating member, and a correction member, which is arranged on an optical path of the fundus observation/photographing optical system, for correcting a deviation of an optical axis of the fundus observation/photographing optical system caused by arrangement of the optical path bifurcating member.Type: GrantFiled: February 23, 2004Date of Patent: October 2, 2007Assignee: Nidek Co. Ltd.Inventor: Hidetaka Hoshino
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Publication number: 20040218147Abstract: An optometric apparatus for examining refractive power of an examinee's eye subjectively, capable of performing highly-precise examination.Type: ApplicationFiled: April 30, 2004Publication date: November 4, 2004Inventors: Akihiro Hayashi, Yoshinobu Hosoi, Hidetaka Hoshino
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Publication number: 20040169818Abstract: A fundus camera capable of obtaining a fundus image under an accurate alignment condition and obtaining a fundus image under an accurate focusing condition. The fundus camera for photographing a fundus of an eye to be examined has a system having an objective lens and a diaphragm arranged in a position approximately conjugate with a pupil with respect to the lens, for observing and photographing the fundus via the lens and the diaphragm, an optical path bifurcating member which is arranged on an optical path between the lens and the diaphragm, a system for observing an anterior segment of the eye via the lens and the optical path bifurcating member, and a correction member, which is arranged on an optical path of the fundus observation/photographing optical system, for correcting a deviation of an optical axis of the fundus observation/photographing optical system caused by arrangement of the optical path bifurcating member.Type: ApplicationFiled: February 23, 2004Publication date: September 2, 2004Inventor: Hidetaka Hoshino
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Patent number: 6652102Abstract: A visual function test apparatus for testing a visual function by presenting an optotype to an examinee's eye is disclosed. This apparatus includes a first half mirror disposed on a projection optical axis of light of the optotype; an illumination light source having a projection optical axis which is made substantially coaxial with the projection optical axis of the optotype light by the first half mirror; a concave mirror which reflects an illumination light from the illumination light source and the optotype light; a second half mirror disposed between the first half mirror and the concave mirror, the second half mirror reflecting the optotype light and the illumination light both reflected by the concave mirror toward the examinee's eye; and a control section which changes a ratio between a light quantity of the optotype light and a light quantity of the illumination light in accordance with a predetermined contrast ratio.Type: GrantFiled: October 16, 2001Date of Patent: November 25, 2003Assignee: Nidek Co., LtdInventors: Akihiro Hayashi, Noritsugu Nozawa, Yuichiro Kanazawa, Hidetaka Hoshino
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Publication number: 20020047997Abstract: A visual function test apparatus for testing a visual function by presenting an optotype to an examinee's eye is disclosed. This apparatus includes a first half mirror disposed on a projection optical axis of light of the optotype; an illumination light source having a projection optical axis which is made substantially coaxial with the projection optical axis of the optotype light by the first half mirror; a concave mirror which reflects an illumination light from the illumination light source and the optotype light; a second half mirror disposed between the first half mirror and the concave mirror, the second half mirror reflecting the optotype light and the illumination light both reflected by the concave mirror toward the examinee's eye; and a control section which changes a ratio between a light quantity of the optotype light and a light quantity of the illumination light in accordance with a predetermined contrast ratio.Type: ApplicationFiled: October 16, 2001Publication date: April 25, 2002Applicant: Nidek Co., Ltd.Inventors: Akihiro Hayashi, Noritsugu Nozawa, Yuichiro Kanazawa, Hidetaka Hoshino
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Patent number: D553661Type: GrantFiled: June 19, 2006Date of Patent: October 23, 2007Assignee: Brother Industries, Ltd.Inventors: Daisuke Nakayama, Takeshi Kitakata, Hidetaka Hoshino, Tomoyuki Okamoto
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Patent number: D554174Type: GrantFiled: June 19, 2006Date of Patent: October 30, 2007Assignee: Brother Industries, Ltd.Inventors: Daisuke Nakayama, Takeshi Kitakata, Hidetaka Hoshino, Tomoyuki Okamoto