摘要:
Provided is an optical body capable of arbitrarily and quickly controlling the optical characteristics of incident light. A refractive index variable layer (8) formed of PLZT or other material and a magneto-optical material layer (9) formed of garnet or other material are provided side by side between a first reflective layer (3) and a second reflective layer (5). If linearly polarized light is made incident from the side of the first reflective layer (3), the incident light interacts with the magneto-optical material layer (9) and is converted into a right-circularly polarized light component and a left-circularly polarized light component. A very small retardation occurring between both the right- and left-circularly polarized light components is amplified through multiple reflections between the pair of reflective layers (3, 5) and is controlled according to a controlled refractive index of the refractive index variable layer (8).
摘要:
Provided is an optical body capable of arbitrarily and quickly controlling the optical characteristics of incident light. A refractive index variable layer (8) formed of PLZT or other material and a magneto-optical material layer (9) formed of garnet or other material are provided side by side between a first reflective layer (3) and a second reflective layer (5). If linearly polarized light is made incident from the side of the first reflective layer (3), the incident light interacts with the magneto-optical material layer (9) and is converted into a right-circularly polarized light component and a left-circularly polarized light component. A very small retardation occurring between both the right- and left-circularly polarized light components is amplified through multiple reflections between the pair of reflective layers (3, 5) and is controlled according to a controlled refractive index of the refractive index variable layer (8). If the left- and right-circularly polarized light components, the retardation between which is thus amplified and controlled, are made to interact with the magneto-optical material layer (9) again to recover the linearly polarized light, the plane of polarization rotates according to the retardation.
摘要:
Provided is a three-dimensional image projector capable of displaying a highly reproducible three-dimensional image in response to changes in a viewer's position and easily accomplishing system downsizing. The three-dimensional image projector 1 includes: a projection image forming disc 4 in which hologram sheets 9a, 9b, 9c are laminated along inner surfaces 10a, 10b of glass substrates 8a, 8b, and which projects image light by causing the image light having directivity to fall incident on the hologram sheets 9a, 9b, 9c; and a rotational drive unit 3 for rotationally driving the projection image forming disc 4 along a surface of the glass substrates 8a, 8b, with a center point C1 serving as the rotation center, wherein the hologram sheets 9a, 9b, 9c are preliminarily recorded with holograms 11a, 11b, 11c of a mode that are formed by causing reference light and object light as two laser beams L3, L2 to simultaneously fall incident on a position corresponding to the center point C1 while maintaining the incidence angle θ1 to the hologram sheets 9a, 9b, 9c to be substantially the same.
摘要:
An object of the present invention is to make it possible to record information on an optical information recording medium in the form of three dimensional interference patterns so that the information is erasable in part.The optical information recording medium (1) has an information recording layer (3) made of a magneto-optic recording material. A pick-up (11) of an optical information recording/reproducing apparatus generates information light by spatially modulating laser light emitted from a light source unit (20) with a spatial light modulator (22), and generates recording-specific reference light spatially modulated in phase by spatially modulating the phase of the laser light emitted from the light source (20) with a phase-spatial light modulator (16). The information recording layer (3) of the optical information recording medium (1) is irradiated with the information light and the recording-specific reference light. An electromagnetic coil (30) applies a magnetic field to the information recording layer (3). A three-dimensional distribution pattern of magnetization corresponding to the interference pattern resulting from the information light and the recording-specific reference light is formed in the information recording layer (3).
摘要:
A multilayer resonance device of the invention includes regularly stacked layers each formed by alternately stacking a magnetic substance and a dielectric substance with thickness regularity, and an irregular layer including a magnetic substance, having a thickness disaccording with the thickness regularity and disposed between the regularly stacked layers. Thus, the multilayer resonance device can attain a large Faraday rotation angle, a large magneto-optical effect, and a practical total layer thickness.
摘要:
A Faraday rotator of multilayer film type is provided in which satisfactory optical characteristics are obtained with a small number of layers. In the Faraday rotator, a first periodic dielectric multilayer film made of silicon dioxide SiO2 and tantalum pentaoxide Ta2O5 is formed on a substrate, then a magneto-optical thin film, and a second periodic dielectric multilayer film made of tantalum pentaoxide Ta2O5 and silicon dioxide SiO2 are formed sequentially. The first and second periodic dielectric multilayer films sandwich the magneto-optical thin film such that their respective higher refractive dielectric thin films are in contact with the magneto-optical thin film. The number of layers of the first periodic dielectric multilayer film is larger than that of the second periodic dielectric multilayer film.
摘要翻译:提供了一种多层膜法拉第旋转器,其中获得了令人满意的光学特性,具有少量层。 在法拉第旋转器中,在衬底上形成由二氧化硅SiO 2和五氧化钽Ta 2 O 5制成的第一周期性电介质多层膜,然后形成磁光薄膜和由五氧化钽Ta 2 O 5和二氧化硅SiO 2制成的第二周期性电介质多层膜 顺序地形成。 第一和第二周期性电介质多层膜夹着磁光薄膜使它们各自的高折射率电介质薄膜与磁光薄膜接触。 第一周期性电介质多层膜的层数大于第二周期性电介质多层膜的层数。
摘要:
A spatial light modulator includes a device portion and a bias field applying coil disposed around the device portion. The device portion includes a magnetic layer and two types of conductor layers. The magnetic layer is made of a magneto-optic material and includes a plurality of pixels whose directions of magnetization are set independently of one another. Each of the pixels causes rotation of a direction of polarization of incident light depending on its direction of magnetization due to a magneto-optic effect. The conductor layers generate a magnetic field for setting the direction of magnetization of each of the pixels of the magnetic layer. Each of the pixels includes two regions which can take different states of magnetization. Information is produced by changing the states of magnetization in those regions.
摘要:
The present invention provides a magneto-optical member capable of ensuring an excellent light transmittance and an optical isolator using the same. A first one-dimensional magnetic photonic crystal having a magneto-optical thin film, and a second one-dimensional magnetic photonic crystal having another magneto-optical thin film are laminated so as to sandwich a dielectric thin film with a small refractive index having an optical length of &lgr;/4+m&lgr;/2 where &lgr; is a wavelength of light and m is 0 or a positive integer. Since a plurality of magneto-optical thin films are present as magnetic thin films and hence the total thickness of the magnetic thin films is increased, the Faraday rotation angle is increased. Also, a large light transmittance can be obtained because of the presence of the dielectric thin film with a small refractive index having (&lgr;/4+m&lgr;/2) thickness where the first and second one-dimensional magnetic photonic crystals are laminated.
摘要:
An image photography play method which is suited to playing a stereoscopic video. The image photography method includes: a step of forming a hologram pattern from a reference light and a subject light; a step of digitally processing the obtained hologram pattern; a step of writing the digitized hologram pattern as a magnetized vector pattern to a spatial lighting modulator which is formed from a magneto-optical material; and a step of inputting linearly polarized light into the spatial lighting modulator and playing an image according to the digitized hologram pattern.
摘要:
A three-dimensional image projector includes: a conversion optical system including a plate-shaped first optical member that has an incidence surface is incident, and an emission surface and that converts a traveling direction of the image light so as to form a predetermined angle between the emission surface and an emission direction of the image light on the emission surface; a rotary driving unit that drives the conversion optical system so as to rotate along the emission surface with a predetermined point on the emission surface as the center of rotation; and an image projection unit that is erected along a rotation axis, converts the traveling direction of the image light emitted from the conversion optical system into a first direction along a surface crossing the rotation axis, and diffuses the image light emitted from the conversion optical system in a second direction along the rotation axis.