Kazutoshi Kato
Kazutoshi Kato, Kamiina-Gun JP
Patent application number | Description | Published |
---|---|---|
20120086910 | Spectacle Lens, Spectacles, and Method for Manufacturing Spectacle Lens - Spectacle lenses that allow a wearer to view an object in a more comfortable manner include a pair of lenses for the left and right eyes. The power of one of the pair of lenses is shifted toward the positive side with respect to the power of the other lens, and object-side average surface power (base curve) of the one lens is smaller than object-side average surface power (base curve) of the other lens. The power (dioptric power) is principal meridian power along a principal meridian of each of the lenses, and the base curve is in the direction along the principal meridian. | 04-12-2012 |
20120229755 | Progressive-Power Lens - A progressive-power lens has one surface which satisfies the following expressions | 09-13-2012 |
20120229756 | Progressive-Power Lens - A progressive-power lens has one surface which satisifies the following expressions | 09-13-2012 |
20120229757 | Progressive-Power Lens and Progressive-Power Lens Design Method - A progressive-power lens having an eyeball-side surface including a distance portion and a near portion having different values of dioptric power and an intermediate portion that connects the distance portion and the near portion to each other, and an object-side surface including a spherical first region having a first curvature and extending along a principal meridian, a spherical second region having a second curvature equal to the first curvature and facing the distance portion, and a third region located outside the first region and below the second region and having a third curvature smaller than the first curvature. | 09-13-2012 |
20140337252 | DESIGN DATA PROVIDING SYSTEM, DATA SERVER, DESIGN DATA PROVIDING METHOD, SPECIFICATION DATA PROVIDING METHOD - There is provided a data server capable of improving a quality of a spectacle lens as a finished product and reducing a cost, even if a semi-finished lens having a complicated shape is used, the data server including: a specification data acquisition unit configured to acquire specification data of a semi-finished lens transmitted from a first terminal; a specification data storage unit configured to store the specification data acquired by the specification data acquisition unit; and a specification data output unit configured to output the specification data stored in the specification data storage unit, to a second terminal. | 11-13-2014 |
Kazutoshi Kato, Minamiminova-Mura JP
Patent application number | Description | Published |
---|---|---|
20120113387 | Progressive Power Lens and Progressive Power Lens Design Method - A progressive power lens including a distance portion for visual recognition of a far working distance, a near portion for visual recognition of a near working distance, and an intermediate portion provided between the distance portion and the near portion, the intermediate portion including a position of an amount of intermediate inset in which a visual line when the intermediate working distance is visually recognized passes an eyeball side surface of the progressive power lens, and addition at intermediate position for viewing an intermediate working distance smaller than the far working distance and larger than the near working distance being set to the position of the amount of intermediate inset. | 05-10-2012 |
Kazutoshi Kato, Nagano-Ken JP
Patent application number | Description | Published |
---|---|---|
20120218510 | Progressive-Power Lens and Progressive-Power Lens Design Method - A progressive-power lens includes an eyeball-side surface including a distance portion and a near portion having different values of dioptric power. An intermediate portion connects the distance portion and the near portion to each other. An object-side surface of the progressive-power lens includes a first region extending along a principal meridian and having a spherical shape having first curvature, a second region facing the distance portion and having a spherical shape having second curvature equal to the first curvature, and a third region located outside the first region and below the second region and having third curvature greater than the first curvature. | 08-30-2012 |
Kazutoshi Kato, Minamiminowa-Mura JP
Patent application number | Description | Published |
---|---|---|
20130057825 | Progressive-Power Lens Selector, Progressive Power Lens Selection Method, and Non-Transitory Computer Readable Storage Medium Storing A Progressive-Power Lens Selection Program - An accommodation ability acquisition unit, a near vision prescription range acquisition unit, a lens database storing design parameters of progressive-power lenses in response to addition power with respect to each of plural types, an accommodation ability computation unit computing used accommodation ability for near vision, a necessary addition power computation unit computing necessary addition power for near vision, a range computation unit computing the maximum distance ranges and the maximum near ranges when lenses are worn based on the necessary addition power in lenses selected as lenses having design elements of a set condition equal to or more than the necessary addition power of the plural types stored in the lens database, and an output control unit allowing a display device to display the maximum distance ranges and the maximum near ranges with respect to the lenses of the design types selected by a selecting unit in juxtaposition are provided. | 03-07-2013 |
Kazutoshi Kato, Atsugi-Shi JP
Patent application number | Description | Published |
---|---|---|
20130286454 | WAVELENGTH SWEPT LIGHT SOURCE - In a wavelength swept light source using a polygon mirror in a well-known art, an oscillation wavelength roughly linearly varies in an upwardly slight convex shape with respect to time. On the other hand, in a wavelength swept light source of SS-OCT, the wavelength is required to vary so that a wavenumber (inverse of wavelength) linearly varies on a time axis. The wavelength swept light source of the well-known art has had a drawback that such wavelength variation cannot be implemented; non-linear distortion occurs in a resultant OCT image; and thereby, a point spread function cannot be kept sharp. According to the present invention, in a wavelength swept light source utilizing an electro-optic deflector including a KTN and so forth, such wavelength variation is caused that the wavenumber linearly varies with respect to a time axis by applying correction, which includes a sawtooth waveform as a main waveform and an exponential component of the sawtooth waveform, to the controlled voltage of the electro-optic deflector. The controlled voltage is controlled so that, as an oscillation wavelength to be swept is swept towards a longer wavelength side, a change rate of the oscillation wavelength is increased. With the controlled voltage, the oscillation wavelength varies more quickly as the oscillation wavelength is swept towards the longer wavelength side, and time variation in the oscillation wavelength is formed in a downwardly convex shape. | 10-31-2013 |