Patent application number | Description | Published |
20100208557 | Optical Head and Optical Recording Device - An optical head includes: a slider which moves relative to a recording medium while the slider is floating above the recording medium; an optical waveguide which is provided on a side surface of an end portion of the slider and which has the focusing function of forming a light spot on the recording medium; and a light guide optical system that guides a light pencil to the optical waveguide. A light pencil coupling portion which receives the light pencil from the light guide optical system is provided in a surface parallel to a direction in which the light pencil is guided by the optical waveguide; and a reflective surface which deflects the light pencil to the light pencil coupling portion is provided in the light guide optical system. The light pencil coupling portion has the function of correcting aberration resulting from oblique incidence of the light pencil obliquely incident from the light guide optical system. A medium member which has a refractive index of more than one is provided between the reflective surface and the light pencil coupling portion. | 08-19-2010 |
20110019510 | RECORDING HEAD AND RECORDER - A recorder has a recording medium for information recording, a light source, an optical system, a slider, and an optical waveguide. To the optical system, light from the light source enters, and the slider moves relative to the recording medium while not in contact therewith. The optical waveguide is arranged at position facing the recording medium in the slider so that light entering from the optical system is irradiated on the recording medium. Where the mode field diameter of the optical waveguide on the light output side is d and the mode field diameter thereof on the light input side is D, the mode field diameter is converted by smoothly changing the diameter of the optical waveguide to satisfy D>d. | 01-27-2011 |
20110164255 | Rotation Optical Fiber Unit and Optical Coherence Tomography Image Forming Apparatus - Provided is a rotary optical fiber unit which can achieve a high coupling efficiency at a low cost and can easily be recovered even when a coupling unit has failed. Provided is also an optical coherence tomographic image forming apparatus using the rotary optical fiber units. A first optical fiber FB | 07-07-2011 |
20120069721 | RECORDING HEAD AND RECORDER - A recorder has a recording medium for information recording, a light source, an optical system, a slider, and an optical waveguide. To the optical system, light from the light source enters, and the slider moves relative to the recording medium while not in contact therewith. The optical waveguide is arranged at position facing the recording medium in the slider so that light entering from the optical system is irradiated on the recording medium. Where the mode field diameter of the optical waveguide on the light output side is d and the mode field diameter thereof on the light input side is D, the mode field diameter is converted by smoothly changing the diameter of the optical waveguide to satisfy D>d. | 03-22-2012 |
20120113397 | Scanning Optical System and Projector Provided with the Same - Provided is a scanning optical system having reduced dimensions. The scanning optical system ( | 05-10-2012 |
20150312496 | Compound Eye Optical System And Imaging Device Using The Same - A compound eye optical system forms a plurality of images with different fields of view for connecting the plurality of images with the different fields of view and outputting one composite image. The system includes: a plurality of individual eye optical systems forming the plurality of images with different fields of view on an imaging surface; and an overall optical system forming an image with a field of view incorporating the entire fields of view obtained by the plurality of individual eye optical systems on the imaging surface, wherein the individual eye optical systems and the overall optical system are configured by a lens array plate having a plurality of lenses integrally formed. | 10-29-2015 |
Patent application number | Description | Published |
20080225291 | CONCAVE DIFFRACTION GRATING DEVICE, REFLECTIVE DISPERSION DEVICE, AND SPECTRAL DEVICE - A concave diffraction grating device, a reflective dispersion device, and a spectral device of the invention include a diffraction grating plane having an aspherical configuration, wherein the diffraction grating plane is symmetrical in a predetermined direction, and asymmetrical in a direction orthogonal to the predetermined direction in such a manner that the curvature of one end portion of the diffraction grating plane in the direction orthogonal to the predetermined direction is gradually decreased, and the curvature of the other end portion thereof is gradually increased. The concave diffraction grating device, the reflective dispersion device, and the spectral device with the above arrangement have desirable slit image forming performance with respect to all the wavelengths in a visible region, and are suitable for mass-production. | 09-18-2008 |
20080239252 | IMAGE PROJECTOR - An object of the present invention is to provide an image projector capable of projecting a high-quality image while realizing small size. In the image projector, a light flux is deflected two-dimensionally by turning a reflector for reflecting a light flux emitted from a light source around a second axis almost orthogonal to a first axis as a center by resonant drive while turning the reflector around the first axis as a center by non-resonant drive. Shape of one or more optical surfaces of a projection optical system for projecting an image onto a projection plane by guiding light onto the projection plane includes a shape for performing a correction for maintaining scanning speed of the light flux along one scan direction on the projection plane almost constant and a shape for performing a correction for suppressing a distortion in an image along the other scan direction almost orthogonal to the one scan direction on the projection plane. By controlling turn of the reflector, at least one of a correction for maintaining scanning speed of the light flux along the other scan direction on the projection plane almost constant and a correction for suppressing a distortion in an image along the one scan direction on the projection plane is performed. | 10-02-2008 |
20090196127 | OPTICAL RECORDING HEAD AND OPTICAL RECORDING APPARATUS - Provided is an optical recording head in which a light beam from a light source is collected by an optical element and reflected on a reflecting surface to be formed into a spot light. Since a support portion for supporting the light source of the optical element at a predetermined position and the reflection surface for reflecting the light beam are formed integrally with each other, it is not required to perform the positioning thereof, and light can be collected to a very small spot with high efficiency, and an optical recording head and an optical recording apparatus having low heights can be provided. | 08-06-2009 |
20090303858 | OPTICAL RECORDING HEAD, MAGNETO-OPTICAL RECORDING HEAD AND OPTICAL RECORDING APPARATUS - An optical recording head simply structured, enabling a reduction in thickness, and having sufficient efficiency even if a light source with small output is used when a plasmon probe is used. The optical recording head includes a light source section for emitting light, a slider moving relative to a recording medium, and an optical waveguide disposed in the slider, guiding the light from the light source section and irradiating the surface of the recording medium with the light, and having a light emission angle not perpendicular to the surface, of the slider, facing the surface of the recording medium. | 12-10-2009 |
20100118664 | NEAR FIELD LIGHT GENERATING DEVICE, OPTICALLY ASSISTED MAGNETIC RECORDING HEAD, OPTICALLY ASSISTED MAGNETIC RECORDING DEVICE, NEAR FIELD OPTICAL MICROSCOPE AND NEAR FIELD LIGHT EXPOSURE APPARATUS - Disclosed is a near field light generating device comprising a first medium layer which transmits light from a light source. This near field light generating device generates near field light by using light irradiating a plasmon probe through the first medium. This near field light generating device is characterized in that a second medium layer having a refractive index lower than that of the first medium layer is formed between the first medium layer and the plasmon probe. | 05-13-2010 |
20100222701 | BODY LIQUID COLLECTING AUXILIARY MEMBER AND BODY LIQUID COLLECTING DEVICE USING THE AUXILIARY MEMBER - Provided is a body liquid collecting device comprising a body liquid collecting auxiliary sheet ( | 09-02-2010 |
20110134499 | LASER PROJECTOR - A two-dimensional image is displayed on a screen (SC) by scanning the screen (SC) two-dimensionally with light beams from a laser light source ( | 06-09-2011 |
20110141441 | IMAGE PROJECTION DEVICE - An object is to provide a image projection device which has a small size but can project an image having a high image quality. To achieve the object, in an image projection device, a reflection part which reflects a light flux from a light source is, while being rotated around a first axis by non-resonance driving, rotated by resonance driving around a second axis which is substantially perpendicular to the first axis, and thereby the light flux is deflected in a two-dimensional direction. By controlling the rotation of the reflection part, a correction for suppressing an image distortion along one scanning direction on a projection surface, and a correction for keeping substantially constant a scanning speed of the light flux along the other scanning direction on the projection surface, are performed. Here, the relationship of 10°<θ<70° is satisfied, where θ represents an angle of inclination of the light flux, which is projected to the projection surface, toward the other scanning direction relative to a normal line of the projection surface, in a case where the reflection part is in a central position of the rotations around the first and second axes. | 06-16-2011 |
20110235003 | LASER PROJECTOR AND IMAGE PROJECTION METHOD - A laser projector comprises an oscillation device for displacing at least one of a plurality of optical elements, which constitute the projection optical system of the laser projector, periodically along the direction of the optical axis of laser light. The laser projector reduces the speckle of a projection image on an arbitrary screen to such an extent as it cannot be recognized with human eyes, without having a significant effect on the image resolution, by periodically displacing the position of the smallest spot of laser light projected from the projection optical system. An image projection method is also provided | 09-29-2011 |
20120182487 | Laser Projection Apparatus - Provided is a laser projection apparatus which forms each one frame by performing two-dimensional scanning with laser light and projects images on a screen ( | 07-19-2012 |