Patent application number | Description | Published |
20130148182 | SPECKLE NOISE REDUCTION BASED ON LONGITUDINAL SHIFT OF SAMPLE - A method and apparatus for reducing speckle noise in an image of an object are disclosed. The method includes, placing the object in an interferometer at a first position along a beam path of an object beam, irradiating the object with the object beam, moving the object from the first position to a second position by longitudinally shifting the object along the beam path of the object beam, irradiating the object with the object beam at the second position. At each of the first and second positions a holographic image formed by interference between the object beam and a reference beam is recorded. An object image with reduced speckle noise is obtained by averaging the holographic images. Either an arithmetic mean or a weighted average may be used in the averaging of the holographic images. | 06-13-2013 |
20140004031 | METHOD OF PURIFYING NANODIAMOND POWDER AND PURIFIED NANODIAMOND POWDER | 01-02-2014 |
20140063332 | APPARATUS AND METHOD FOR ACQUIRING INFORMATION ABOUT LIGHT-FIELD DATA - An apparatus to acquire information about light-field data includes: a beam splitter configured to split light, through a lens unit which is connected to the apparatus, from an object into a first light beam and a second light beam; an image sensor configured to detect the first light beam to form an image of the object; and a light-field sensor, including a lenslet array and a detecting unit to detect the second light beam through the lenslet array, configured to acquire information about the light-field data, the lenslet array including a plurality of lenslets, wherein a first position where the detecting unit is provided is conjugate to a second position of a pupil of the lens unit. | 03-06-2014 |
20140098409 | LIGHT MODULATOR - A light modulator includes a band-pass filter configured to select a wavelength of an incident light; a first layer; a second layer configured to include a trench with a bottom surface, a side surface, and a top surface; a thin metal film provided on the side surface of the trench of the second layer; and a dielectric layer provided between the first and second layers at the bottom and the top surfaces of the trench. An electric field is applied to the dielectric layer by using the first and second layers. The dielectric layer is provided between the thin metal film and the first layer at the side surface of the second layer so that the thin metal film has an anisotropic permittivity due to the electric field. | 04-10-2014 |
20140198369 | DRIVING CIRCUIT FOR LIGHT MODULATOR - A driving circuit for driving a light modulator including a matrix of pixels, the driving circuit includes, a first selecting unit configured to select a row of the matrix of pixels, each pixel having a capacitance element for modulating light; a first transistor configured to reset a voltage of the capacitance element in the selected row; a second selecting unit configured to select a column of the matrix of pixels, information being written in the capacitance element specified by the first and second selecting unit; and a second transistor, the information being written in the capacitance element through the second transistor. | 07-17-2014 |
20150125379 | METHOD OF PURIFYING NANODIAMOND POWDER AND PURIFIED NANODIAMOND POWDER - A method of purifying a nanodiamond powder includes preparing the nanodiamond powder, heating the nanodiamond powder at between 450° C. and 470° C. in an atmosphere including oxygen, performing a hydrochloric acid treatment on the heated nanodiamond powder, and performing a hydrofluoric acid treatment on the nanodiamond powder obtained after performing the hydrochloric acid treatment. | 05-07-2015 |