Shuho
Shuho Kobayashi, Okaya-Shi JP
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20080239487 | Multilayered phase difference plate and projector - [Problems to be Solved] To provide a multilayered phase difference plate that obtains a higher incident light polarization conversion efficiency than that of a related-art multilayered phase difference plate. | 10-02-2008 |
20090052031 | POLARIZATION CONVERSION ELEMENT AND METHOD FOR MANUFACTURING THE SAME - A polarization conversion element includes: a plurality of light transmitting substrates sequentially bonded at a plurality of inclined planes thereof that form an angle of approximately 45° with respect to a light incident face and a light emitting face being approximately parallel to the light incident face; a retardation plate providing a phase difference to incident polarized light; a polarization separation film separating incident light into two types of polarized light; and an air layer. In the element, the polarization separation film and the air layer are alternately formed along the plurality of inclined planes. | 02-26-2009 |
20100246012 | OPITICAL ARTICLE AND PROCESS FOR PRODUCING THE SAME - An optical article includes a plurality of light transmissive members and a plurality of optical functional films, wherein the plurality of light transmissive members are disposed to face one another; the optical functional film is disposed such that the optical functional film is sandwiched between the light transmissive members; a bonding layer that bonds a surface of the optical functional film to a surface of the light transmissive member is provided; the optical functional film is a multilayer film in which a plurality of low refractive index layers and a plurality of high refractive index layers are alternately arranged and a layer in contact with the side of the bonding layer is a high refractive index layer; and the bonding layer is a plasma-polymerized film having the same refractive index as that of the low refractive index layer. | 09-30-2010 |
Shuho Kobayashi, Obaya-Shi JP
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20100134885 | OPTICAL ELEMENT - An optical element that has a flat plate shape and includes a light entering surface and a light exiting surface substantially parallel with the light entering surface, the element includes a plurality of translucent members, a plurality of optical multilayer films, a plurality of phase plates, and a plurality of plasma polymerized films. The translucent members, the optical multilayer films, the phase plates, and the plasma polymerized films are provided along the light entering surface and the light exiting surface. The translucent members include a plurality of oblique surfaces oblique to the light entering surface and the light exiting surface. Each of the optical multilayer films is formed on some of the oblique surfaces. The optical multilayer film is either one of a polarization separating film and a reflecting film. Each of the plasma polymerized films is formed on at least one of a surface of each of the oblique surfaces, a surface of the optical multilayer film, and a surface of each of the phase plates. At least one of each of the translucent members adjacent to the optical multilayer film and the optical multilayer film, the translucent member adjacent to the phase plate and the phase plate, and the phase plate adjacent to the optical multilayer film and the optical multilayer film is molecular-bonded with the plasma polymerized film. | 06-03-2010 |
Shuho Kobayashi, Matsumoto-Shi JP
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20120188471 | POLARIZATION CONVERSION DEVICE, POLARIZATION CONVERSION UNIT, AND PROJECTION TYPE VIDEO APPARATUS - A polarization separation device includes a transmissive substrate formed of crystalline material having a birefringent property and an optical rotatory property, and a polarization separation portion that is provided on an incidence-side surface of the transmissive substrate and transmits P-polarized light and reflects S-polarized light. A reflective element, which reflects the S-polarized light reflected by the polarization separation portion, is disposed substantially in parallel with the transmissive substrate. A phase difference plate is disposed at an emission-side of the transmissive substrate. The P-polarized light, which is transmitted through the polarization separation portion and is incident to the transmissive substrate, is made to be emitted from an emission-side surface of the transmissive substrate while maintaining a polarization plane thereof, and the polarization plane of the P-polarized light transmitted through the transmissive substrate is converted to be as S-polarized light in the phase difference plate. | 07-26-2012 |
20120268718 | POLARIZATION CONVERSION ELEMENT, POLARIZATION CONVERTING UNIT, AND PROJECTING APPARATUS - In a polarization conversion element including a plurality of light transmitting substrates and an optical element that includes polarization splitting films and reflective films that are alternately disposed between the light transmitting substrates, and a laminated wave plate that is arranged on the light outgoing face of the optical element and rotates the polarization plane of light emitted from the optical element by θ, a laminated wave plate is acquired by stacking a first wave plate of a phase difference Γ | 10-25-2012 |
20120307167 | POLARIZATION CONVERTING ELEMENT, POLARIZATION CONVERTING UNIT, AND PROJECTION-TYPE IMAGING DEVICE - A polarization separating element is configured to include a translucent substrate formed of a crystal material having birefringent properties and optically rotatory power and a polarization separating portion formed on the incidence-side surface of the translucent substrate so as to transmit a P-polarized light beam and reflect an S-polarized light beam. A reflecting element that reflects the S-polarized light beam reflected by the polarization separating portion is disposed so as to be separated approximately in parallel to the translucent substrate. A predetermined function is set such that the P-polarized light beam having passed through the polarization separating portion and been incident to the translucent substrate is converted so as to be parallel to the polarization plane of the S-polarized light beam so that the P-polarized light beam is output as the S-polarized light beam. | 12-06-2012 |