Patent application number | Description | Published |
20090052300 | HOLOGRAM INFORMATION RECORDING MEDIUM AND HOLOGRAM INFORMATION RECORDING/REPRODUCING DEVICE - [Object] To provide a hologram information recording medium and a hologram information recording/reproducing device capable of accurately reproducing data multiplexed on the recording medium irrespective of the influence of the external environment and so forth. | 02-26-2009 |
20090059760 | RECORDING-MEDIUM DRIVING DEVICE - [Object] To provide a recording medium that is strong in deformation, easy to handle, excellent in portability, and inexpensive, and a recording-medium driving device thereof. | 03-05-2009 |
20090079275 | ACTUATOR - An actuator in which, when a supporting shaft, where a mirror (control object) is provided, is tilted by receiving an electromagnetic force of a magnetic driving mechanism, small balls of a supporting mechanism move in an axial direction in a space provided between an outer base and an inner ring member. Therefore, the supporting shaft and the inner ring member holding the supporting shaft swing. At this time, since the inner ring member swings around a rotational fulcrum as center, the supporting shaft can swing around one rotational fulcrum as center at all times. A plurality of laid members serving as a rotation restricting member prevent rotation of the supporting shaft in a direction around the axis. | 03-26-2009 |
20090091194 | ACTUATOR - When currents are applied to driving coils, electromagnetic forces are generated between the currents and magnetic fluxes passing through gaps, a shaft member is swung in one direction, and a tilt angle of a mirror (controlled object) changes relative to a support center point. Electromotive forces generated in detection coils when the magnetic fluxes pass through the detection coils are given as feedback signals to a control unit. The control unit generates currents on the basis of the feedback signals, and applies the currents to the driving coils. By detecting the velocity of the mirror during swinging with the detection coils, the structure of the actuator can be simplified. Further, the responsivity can be increased, and the tilt angle of the mirror can be detected with high accuracy. | 04-09-2009 |
20090097379 | HOLOGRAM DEVICE - In a hologram device, a reflecting mirror is provided on a light path of reproduction light, the reproduction light is oriented in a direction parallel to an optical recording medium, and, then, a light-receiving member receives the light. Since the light-receiving member need not be provided in a thickness direction, even if a light path length is increased, the hologram device can be made thin. In addition, by using the reflecting mirror having a very small area, it is possible to restrict crosstalk even without a pinhole. Further, a light-receiving device is accommodated in a housing, and the reproduction light is incident upon the interior of the housing through a transparent cover, so that it is possible to prevent entry of dust. | 04-16-2009 |
20090168130 | HOLOGRAM RECORDING METHOD AND HOLOGRAM RECORDING DEVICE - A recording medium is stacked on a master recording body, to which reference beams are applied each at an incident angle. The interference between diffracted beams diffracted in the data storage sections of the master recording body and the reference beams in the recording medium occurs such that the data are transferred to the recording medium. The use of plural compact light sources for emitting the reference beams allows the recording device to be compact while reducing the power consumption. | 07-02-2009 |
20120147602 | LIGHT-EMITTING DEVICE - A holding hole of a holding body has an edge portion and an inner peripheral surface which is a concavely curved surface connected to the edge portion. In a light source unit which supports a light source, projections are formed at three locations, and each of front surfaces thereof has a convexly curved line having a curvature radius longer than that of the inner peripheral surface. When the light source unit is inserted into the holding hole, the front surfaces of the projections at the three locations are brought into point contact with the edge portion at contact portions on the convexly curved lines. By performing laser welding at these contact portions, the attitude of the light source unit after its tilt adjustment can be stabilized and fixed to the holding body. | 06-14-2012 |
20140036327 | HOLOGRAM AUTHENTICATION SYSTEM - An authentication system includes a first hologram, a second hologram, a light source, and an image pickup device. In this case, the first hologram is a transmission hologram for causing interference with data of the second hologram in order to authenticate the second hologram, the second hologram is a reflection hologram to be authenticated, and light from the light source is reflected by the second hologram, the reflected light is irradiated to the first hologram as reference light for the first hologram. Diffracted light through the first hologram is acquired by the image pickup device to authenticate the second hologram. | 02-06-2014 |
20150077820 | IMAGE PROJECTION APPARATUS - An aperture forming member is provided on a light path from a laser light source to a collimator lens, and a plurality of apertures are formed by a plurality of wall bodies of the aperture forming member. The distances between the apertures and the outer surface of an effective beam decrease in the order of L1, L2, and L3. By providing the plurality of apertures, entrance of stray light into a phase conversion array can be prevented. | 03-19-2015 |