Patents by Inventor Shigeo Kubota
Shigeo Kubota 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: 7057809Abstract: A clear image unaffected by the brightness of the projection environment. The projection screen according to the present invention is a projection screen for projecting thereupon narrow-band tricolor wavelength band light to display an image, and comprises an optical thin film (3) which has high reflection properties regarding the narrow-band tricolor wavelength band light, and has high transmission properties regarding at least visible wavelength band light other than the wavelength band light, on a screen base (2). With the projection screen according to the present invention configured as above, the optical thin film (3) serves as a so-called band filter. That is to say, the optical thin film (3) particularly reflects narrow-band tricolor wavelength band light and transmits light of other wavelengths, thereby functioning as a narrow-band tricolor wavelength bandwidth filter acting to separate these.Type: GrantFiled: March 14, 2003Date of Patent: June 6, 2006Assignee: Sony CorporationInventors: Shigeo Kubota, Junichi Ohsako, Masayasu Kakinuma, Kazuhito Shimoda
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Publication number: 20060109399Abstract: The present invention has been made to form a reflecting polarizer without using a high-birefringence polymer. The present invention provides a reflecting polarizer that transmits a first linear polarization component that oscillates parallel to a first polarization plane of an incident light and reflects a second linear polarization component that oscillates parallel to a second polarization plane perpendicular to the first polarization plane by utilizing birefringence characteristics to polarize/split the incident light, comprising a dielectric multilayer film obtained by stacking, a plurality of times in an alternate manner, a high refractive index layer formed using a dielectric material having birefringence characteristics, and a low refractive index layer formed using a dielectric material having a refractive index which is substantially the same as one of the refractive indexes that the dielectric material having birefringence characteristics has.Type: ApplicationFiled: November 15, 2005Publication date: May 25, 2006Inventors: Shigeo Kubota, Junichi Ohsako, Toshitaka Kawashima, Hiroyuki Okita
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Patent number: 6973254Abstract: Disclosed herein is an optical fiber including a core doped with first metal ions; and a cladding formed so as to surround the core and doped with second metal ions selected so that the absorption coefficient in a transition wavelength band of first transition of the first metal ions is greater than the absorption coefficient in a transition wavelength band of second transition of the first metal ions. The amplification of light due to the first transition is suppressed, and at least the amplification or oscillation of light due to the second transition is effected. Also disclosed are an optical amplification/oscillation device, a laser light generating device, and a laser display unit, and a color laser display unit each employing the optical fiber.Type: GrantFiled: March 17, 2005Date of Patent: December 6, 2005Assignee: Sony CorporationInventors: Shigeo Kubota, Hisashi Masuda
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Publication number: 20050252894Abstract: A laser annealing device (10) includes a laser oscillator (12), radiating a pulsed laser light beam of a preset period, and an illuminating optical system (15) for illuminating a pulsed laser light beam to an amorphous silicon film (1). The illuminating optical system (15) manages control for moving a laser spot so that a plural number of light pulses will be illuminated on the same location on the amorphous silicon film (1). The laser oscillator (12) radiates a laser light beam of a pulse generation period shorter than the reference period. The reference period is a time interval as from the radiation timing of illumination of a pulsed laser light beam on the surface of the film (1) until the timing of reversion of the substrate temperature raised due to the illumination of the laser light beam to the original substrate temperature.Type: ApplicationFiled: July 8, 2005Publication date: November 17, 2005Inventors: Yutaka Imai, Nobuhiko Umezu, Akihiko Asano, Shin Hotta, Koichi Tatsuki, Atsushi Fukumoto, Shigeo Kubota
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Patent number: 6961507Abstract: Disclosed herein is an optical fiber including a core doped with first metal ions; and a cladding formed so as to surround the core and doped with second metal ions selected so that the absorption coefficient in a transition wavelength band of first transition of the first metal ions is greater than the absorption coefficient in a transition wavelength band of second transition of the first metal ions. The amplification of light due to the first transition is suppressed, and at least the amplification or oscillation of light due to the second transition is effected. Also disclosed are an optical amplification/oscillation device, a laser light generating device, and a laser display unit, and a color laser display unit each employing the optical fiber.Type: GrantFiled: March 17, 2005Date of Patent: November 1, 2005Assignee: Sony CorporationInventors: Shigeo Kubota, Hisashi Masuda
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Publication number: 20050225629Abstract: The present invention is to provide a three-dimensional image display apparatus, in which three-dimensional images of a moving image and a still image are directly obtained without using a hologram technology and a high speed operation can be attained. The three-dimensional image display apparatus of the present invention includes an optical modulator array which modulates the light intensity of an incident light to be an image signal light and an optical deflector array which shifts an image focusing position of each pixel light from the optical modulator array in the direction of an optical axis to form a three-dimensional section image, wherein the optical modulator array is formed of a diffractive type array in which a plurality of light reflective films are driven and correspond to a light of one pixel and the optical reflector array 4 is formed of an array in which a plurality of light reflective films are driven and correspond to a light of one pixel.Type: ApplicationFiled: December 2, 2003Publication date: October 13, 2005Inventors: Shigeo Kubota, Toshitaka Kawashima, Junichi Ohsako, Naoya Eguchi
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Patent number: 6933185Abstract: The state of a polysilicon film formed by excimer laser annealing an amorphous silicon film is to be evaluated. When the amorphous silicon film is annealed to form a polysilicon film, linearity or periodicity presents itself in the spatial structure of the film surface of the polysilicon film formed depending on the energy applied to the amorphous silicon during annealing. This linearity or periodicity is processed as an image and represented numerically from the image by exploiting the linearity or periodicity. The state of the polysilicon film is checked based on the numerical results.Type: GrantFiled: March 24, 2003Date of Patent: August 23, 2005Assignee: Sony CorporationInventors: Hiroyuki Wada, Yoshimi Hirata, Ayumu Taguchi, Koichi Tatsuki, Nobuhiko Umezu, Shigeo Kubota, Tetsuo Abe, Akifumi Ooshima, Tadashi Hattori, Makoto Takatoku, Yukiyasu Sugano
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Publication number: 20050163453Abstract: Disclosed herein is an optical fiber including a core doped with first metal ions; and a cladding formed so as to surround the core and doped with second metal ions selected so that the absorption coefficient in a transition wavelength band of first transition of the first metal ions is greater than the absorption coefficient in a transition wavelength band of second transition of the first metal ions. The amplification of light due to the first transition is suppressed, and at least the amplification or oscillation of light due to the second transition is effected. Also disclosed are an optical amplification/oscillation device, a laser light generating device, and a laser display unit, and a color laser display unit each employing the optical fiber.Type: ApplicationFiled: March 17, 2005Publication date: July 28, 2005Applicant: Sony CorporationInventors: Shigeo Kubota, Hisashi Masuda
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Publication number: 20050163450Abstract: Disclosed herein is an optical fiber including a core doped with first metal ions; and a cladding formed so as to surround the core and doped with second metal ions selected so that the absorption coefficient in a transition wavelength band of first transition of the first metal ions is greater than the absorption coefficient in a transition wavelength band of second transition of the first metal ions. The amplification of light due to the first transition is suppressed, and at least the amplification or oscillation of light due to the second transition is effected. Also disclosed are an optical amplification/oscillation device, a laser light generating device, and a laser display unit, and a color laser display unit each employing the optical fiber.Type: ApplicationFiled: March 17, 2005Publication date: July 28, 2005Applicant: Sony CorporationInventors: Shigeo Kubota, Hisashi Masuda
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Patent number: 6898366Abstract: Disclosed herein is an optical fiber including a core doped with first metal ions; and a cladding formed so as to surround the core and doped with second metal ions selected so that the absorption coefficient in a transition wavelength band of first transition of the first metal ions is greater than the absorption coefficient in a transition wavelength band of second transition of the first metal ions. The amplification of light due to the first transition is suppressed, and at least the amplification or oscillation of light due to the second transition is effected. Also disclosed are an optical amplification/oscillation device, a laser light generating device, and a laser display unit, and a color laser display unit each employing the optical fiber.Type: GrantFiled: March 25, 2002Date of Patent: May 24, 2005Assignee: Sony CorporationInventors: Shigeo Kubota, Hisashi Masuda
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Publication number: 20050018285Abstract: A clear image unaffected by the brightness of the projection environment. The projection screen according to the present invention is a projection screen for projecting thereupon narrow-band tricolor wavelength band light to display an image, and comprises an optical thin film (3) which has high reflection properties regarding the narrow-band tricolor wavelength band light, and has high transmission properties regarding at least visible wavelength band light other than the wavelength band light, on a screen base (2). With the projection screen according to the present invention configured as above, the optical thin film (3) serves as a so-called band filter. That is to say, the optical thin film (3) particularly reflects narrow-band tricolor wavelength band light and transmits light of other wavelengths, thereby functioning as a narrow-band tricolor wavelength bandwidth filter acting to separate these.Type: ApplicationFiled: March 14, 2003Publication date: January 27, 2005Inventors: Shigeo Kubota, Junichi Ohsako, Masayasu Kakinuma, Kazuhito Shimoda
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Publication number: 20040097103Abstract: A laser annealing device (10) includes a laser oscillator (12), radiating a pulsed laser light beam of a preset period, and an illuminating optical system (15) for illuminating a pulsed laser light beam to an amorphous silicon film (1). The illuminating optical system (15) manages control for moving a laser spot so that a plural number of light pulses will be illuminated on the same location on the amorphous silicon film (1). The laser oscillator (12) radiates a laser light beam of a pulse generation period shorter than the reference period. The reference period is a time interval as from the radiation timing of illumination of a pulsed laser light beam on the surface of the film (1) until the timing of reversion of the substrate temperature raised due to the illumination of the laser light beam to the original substrate temperature.Type: ApplicationFiled: December 15, 2003Publication date: May 20, 2004Inventors: Yutaka Imai, Nobuhiko Umezu, Akihiko Asano, Shin Hotta, Koichi Tatsuki, Atsushi Fukumoto, Shigeo Kubota
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Publication number: 20030183853Abstract: The state of a polysilicon film formed by excimer laser annealing an amorphous silicon film is to be evaluated. When the amorphous silicon film is annealed to form a polysilicon film, linearity or periodicity presents itself in the spatial structure of the film surface of the polysilicon film formed depending on the energy applied to the amorphous silicon during annealing. This linearity or periodicity is processed as an image and represented numerically from the image by exploiting the linearity or periodicity. The state of the polysilicon film is checked based on the numerical results.Type: ApplicationFiled: March 24, 2003Publication date: October 2, 2003Inventors: Hiroyuki Wada, Yoshimi Hirata, Ayumu Taguchi, Koichi Tatsuki, Nobuhiko Umezu, Shigeo Kubota, Tetsuo Abe, Akifumi Ooshima, Tadashi Hattori, Makoto Takatoku, Yukiyasu Sugano
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Patent number: 6628681Abstract: A laser apparatus includes a master laser for emitting reference laser pulse light RPref having a wavelength of 914 nm and a pulse width of 0.5 ns; a microlens array for dividing the reference laser pulse light RPref into N pieces of light; optical fiber amplifiers 14-1 to 14-N being set to increase their length progressively in that order so as to have a propagation delay time of 0.5 ns, which is the pulse width of the divided pieces of reference laser pulse light DRPref1 to DRPrefN; a third harmonic generating unit for receiving the divided pieces of reference laser pulse light on which amplifying and delaying effects have been produced, and generating third harmonics TRD1 to TRDN having a wavelength of 305 nm and a pulse width of 0.5 ns; and an illuminating optical system for successively disposing the N third harmonics TRD1 to TRDN in parallel with each other, subjecting the N third harmonics TRD1 to TRDN to time multiplexing, and emitting the result.Type: GrantFiled: March 15, 2002Date of Patent: September 30, 2003Assignee: Sony CorporationInventors: Shigeo Kubota, Michio Oka
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Publication number: 20020172481Abstract: Disclosed herein is an optical fiber including a core doped with first metal ions; and a cladding formed so as to surround the core and doped with second metal ions selected so that the absorption coefficient in a transition wavelength band of first transition of the first metal ions is greater than the absorption coefficient in a transition wavelength band of second transition of the first metal ions. The amplification of light due to the first transition is suppressed, and at least the amplification or oscillation of light due to the second transition is effected. Also disclosed are an optical amplification/oscillation device, a laser light generating device, and a laser display unit, and a color laser display unit each employing the optical fiber.Type: ApplicationFiled: March 25, 2002Publication date: November 21, 2002Applicant: Sony CorporationInventors: Shigeo Kubota, Hisashi Masuda
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Patent number: 6459493Abstract: A second harmonic generating element radiates a laser beam having a wavelength of 532 nm onto a substrate surface. The laser beam corresponds to the second harmonic beam of a fundamental laser beam having a wavelength of 1064 nm. An emitting optical system emits the laser beam vertically to the substrate surface so that the laser beam is made linear. An observing means has a optical axis Lo oriented in a different direction from a optical axis Li of the emitting optical system and provides a CCD image sensor served as a two-dimensional imaging device located in conjugation with the height or thickness of the substrate surface. The observing means operates to observe a light section image formed by the linear beam fired by the emitting optical system onto the substrate surface. Then, an image processing means precisely measures the form of the surface of an object to be measured as suppressing degrade of an S/N ratio, on the basis of the image data of the light section image observed by the observing means.Type: GrantFiled: June 14, 1996Date of Patent: October 1, 2002Assignee: Sony CorporationInventors: Minako Sugiura, Shigeo Kubota, Naoya Eguchi
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Publication number: 20020136246Abstract: A laser apparatus includes a master laser for emitting reference laser pulse light RPref having a wavelength of 914 nm and a pulse width of 0.5 ns; a microlens array for dividing the reference laser pulse light RPref into N pieces of light; optical fiber amplifiers 14-1 to 14-N being set to increase their length progressively in that order so as to have a propagation delay time of 0.5 ns, which is the pulse width of the divided pieces of reference laser pulse light DRPref1 to DRPrefN; a third harmonic generating unit for receiving the divided pieces of reference laser pulse light on which amplifying and delaying effects have been produced, and generating third harmonics TRD1 to TRDN having a wavelength of 305 nm and a pulse width of 0.5 ns; and an illuminating optical system for successively disposing the N third harmonics TRD1 to TRDN in parallel with each other, subjecting the N third harmonics TRD1 to TRDN to time multiplexing, and emitting the result.Type: ApplicationFiled: March 15, 2002Publication date: September 26, 2002Applicant: Sony CorporationInventors: Shigeo Kubota, Michio Oka
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Patent number: 6410680Abstract: A metal-dendrimer complex in which the metal active site is deep within the three-dimensional dendrimer construct, has superoxide dismutase-like activity. In particular embodiments the complex is a copper(II)-dendrimer complex and the dendrimer construct is a dendritic polypeptide, and the copper(II) is complexed with imidazole groups provided by histidine side groups within the dendritic construct. The dendrimer construct has a generally globular shape, and the branched chains nearer the surface are sufficiently densely packed to restrict the movement of larger biomolecules into the dendritic construct toward the metal active sites. Smaller molecules such as the superoxide anion (O2·−) move freely from the milieu into the dendritic complex and to the metal active sites, where the dismutation of superoxide to hydrogen peroxide is effected; and smaller molecules such as hydrogen peroxide move freely out from the dendritic complex to the milieu.Type: GrantFiled: June 21, 2000Date of Patent: June 25, 2002Assignee: DendriMolecular, Inc.Inventor: Shigeo Kubota
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Patent number: 6388744Abstract: To inspect a disc-shaped recording medium accurately, promptly and nondestructively, a laser light emitted from a laser generator 4 is irradiated through an optical fiber 8, a rotatable diffusion plate 10 and an objective lens 13 to the surface of a disc 2. A solid-state image sensing device 15 detects a return component of the light, reflected from the surface of the disc 2. A processor 6 processes the output image from the solid-state image sensing device 15 to inspect the configuration of the signal recording surface of the disc 2.Type: GrantFiled: March 22, 2000Date of Patent: May 14, 2002Assignee: Sony CorporationInventors: Shigeo Kubota, Naoya Eguchi, Yutaka Imai
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Patent number: RE37717Abstract: An optical pickup device for condensing the light from a light source on a signal recording surface by an objective lens and for detecting the return light from the signal recording surface by a light detection unit is disclosed. The optical pickup device is capable of recording and/or reproducing at least two different sorts of optical recording media. The light beam radiated from a light source is condensed by an objective lens. An aperture varying unit varies the size of an aperture of the objective lens depending upon the sorts of the optical recording media. The return light from the optical recording medium is detected by a light detection unit. The size of the aperture of the objective lens for condensing the light from the light source is varied depending upon the difference in substrate thickness of the different sorts of the optical recording media, thus assuring high-quality recording/reproduction for two or more different sorts of optical recording media.Type: GrantFiled: April 20, 2000Date of Patent: May 28, 2002Assignee: Sony CorporationInventors: Naoya Eguchi, Shigeo Kubota