Hoya Corporation is a Japanese company manufacturing optical products such as photomasks, photomask blanks and glass magnetic-memory disks, contact lenses and eyeglass lenses using wavefront technology for the health-care market, medical photonics,lasers, photographic filters, and software. The headquarters are in 2-7-5 Naka-Ochiai, Shinjuku, Tokyo. Hoya Corporation is one of the Forbes Global 2000 Leading Companies and Industry Week 1000 Company.Hoya acquired the camera company Pentax in 2007, for the price of US$1 billion, about 10% more than Pentax was valued at the time. In June 2010 the grandson of the corporation's founder Yutaka Yamanaka proposed changes to the Board of Directors to prevent what he called such "mistakes" from happening again.On October 1, 2011, Hoya sold its Pentax camera business to Ricoh. Wikipedia.
Hoya Corporation | Date: 2016-10-27
An exemplary ocular implant insertion system includes a case and a preloaded ocular implant insertion apparatus. The apparatus includes first and second movable structures that move the ocular implant in a predetermined sequence. The respective configurations of the case and the ocular implant insertion apparatus are such that the ocular implant insertion apparatus is not removable from the case when the ocular implant insertion apparatus is in the pre-use state and is removable after the first movable structure has moved at least a portion of the optical implant.
Hoya Corporation | Date: 2016-10-17
A light source device for an electronic endoscope includes a light source that emits light having a visible light wavelength region and an optical filter that has transmission peaks at a plurality of particular wavelengths in a continuous wavelength region including the visible light wavelength region. The plurality of particular wavelengths include wavelengths of around 420 nm, around 550 nm and around 650 nm. The optical filter has a constant transmissivity higher than zero and lower than a half of each of the transmission peaks in a wavelength region between the transmission peaks and the constant transmissivity in the wavelength region between the transmission peaks is higher than a transmissivity in a wavelength region other than between the transmission peaks.
Hoya Corporation | Date: 2016-09-29
An ultraviolet absorbing paint is provided. The ultraviolet absorbing paint includes an oxide precursor of at least one transition metal selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Ce, suitably an ultraviolet absorbing paint. The oxide precursor of the transition metal is a metal salt, a metal acid salt, or an organic metal compound of at least one transition metal selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Ce.
Hoya Corporation | Date: 2016-08-18
A zoom optical system includes a negative first lens group having a first deflection optical element, a positive second lens group, a positive third lens group, a positive fourth lens group, and a second deflection optical element, in that order from the object side. The first lens group is provided at a fixed position relative to an imaging plane. Zooming is performed by moving at least the second and third lens groups so that distances between adjacent lens groups of the first through fourth lens groups change. The third lens group is a focusing lens group which moves along the optical axis during focusing. The following condition (1) is satisfied:
Hoya Corporation | Date: 2016-09-09
Provided is a switching power supply device having a very small switching loss, which includes a rectifier circuit for rectifying a commercial AC voltage, a full-bridge circuit having first to fourth switching element, a transformer having a single primary coil and an N number of secondary coils, an N number of rectifying and smoothing circuits, an output detecting circuit for detecting at least one of voltage and current output from each rectifying and smoothing circuit, and a control circuit. Each rectifying and smoothing circuit includes a rectifying unit, a secondary switching element for controlling an output of the rectified voltage, and a smoothing unit for smoothing the rectified voltage, and the control circuit turns on each secondary switching element during a predetermined time.
Hoya Corporation | Date: 2017-02-15
An image processing device is constituted by a means for, for each pixel in an effective pixel region of an imaging element that cyclically images a subject in a predetermined imaging period, calculating a difference value between a pixel signal of a current imaging period output by the imaging element and a pixel signal of one imaging period earlier; a means for detecting motion of the subject, with the entire effective pixel region as a range; a means for successively setting each of the pixels in the effective pixel region as a pixel of interest; a means for detecting motion of the subject, with a local pixel region that includes the successively set pixel of interest as a range; a means for, for each of the pixels of interest, determining a mixing ratio for the pixel signal of the current imaging period and the pixel signal of one imaging period earlier based on the two detection result; and a means for, for each of the pixels of interest, correcting the pixel signal of the current imaging period based on the determined mixing ratio.
Hoya Corporation | Date: 2017-01-18
The present invention relates to a method of manufacturing an eyeglass lens comprising a multilayer vapor deposition film directly or indirectly on a lens substrate, which comprises preparing the multilayer vapor deposition film by: forming a first, a second, a third, a fourth, a fifth, a sixth, and a seventh layer each by vapor deposition with a vapor deposition source comprising a main component in the form of SiO_(2), Ta_(2)O_(5) or ZrO_(2), SiO_(2), Ta_(2)O_(5) or ZrO_(2), SiO_(2), Ta_(2)O_(5) or ZrO_(2), and SiO_(2), respectively, wherein the multilayer vapor deposition film sequentially comprises, from the lens substrate side, the first to the seventh layer, the eyeglass lens comprises the multilayer vapor deposition film on both an object-side surface and an eyeball-side surface of the lens substrate, and a reflectance relative to all light rays within 420 to 450 nm wavelength range on an object-side surface and on an eyeball-side surface of the eyeglass lens ranges from 3 to 8 percent.
Hoya Corporation | Date: 2017-01-25
An intraocular lens injector (1) includes: a hollow body having an injector body (5) provided with a lens placement portion (11) on which an intraocular lens is placed, and a screw member (8) with a first threaded portion (8b) formed thereon and connected to a rear end portion of the injector body (5), and rotatable around an axis of the injector body (5) without moving in an axial direction of the injector body; and a moving member (9, 10) having a second threaded portion (9c) that engages with the first threaded portion (8b) from an initial state before use, and configured to release the intraocular lens from a tip of an injection tube 7 by moving in an axial direction of the injector body (5) independently from the screw member (8) due to an engagement of the first threaded portion (8b) and the second threaded portion (9c), during a rotating operation of the screw member (8).
Osaka University and Hoya Corporation | Date: 2017-01-25
A therapeutic instrument (20), includes: a support member (25) having a tongue-shaped supporting portion (50) for supporting a sheet-like therapeutic agent; a nozzle member (23) having a cylindrical portion (30) in which the supporting portion (50) supporting the therapeutic agent can be housed, and having an opening (34) through which the supporting portion (50) can be loaded and unloaded in/from a tip of the cylindrical portion (30); a syringe unit (22) that acts a positive pressure in the cylindrical portion (30) for pushing-out the therapeutic agent housed in the cylindrical portion (30) together with the supporting portion (50) to outside the cylindrical portion (30) through the opening (34); and a water flow forming part including a plurality of protrusions (53) formed on a surface of the supporting portion (50) so as to form a water flow at a place where the supporting portion (50) and the therapeutic agent are faced each other, when a medical water is fed into the cylindrical portion (30) in a state in which the therapeutic agent is housed in the cylindrical portion together with the supporting portion (50).
Hoya Corporation | Date: 2016-01-06
A spectacle lens design system comprising: a first photographing apparatus disposed to have a first distance with respect to a subject so as to photograph the subject; a second photographing apparatus disposed to have a second distance with respect to the subject so as to photograph a visual target, the second distance being farther than the first distance; a determination means that determines a position of an eye of the subject based on an image photographed by the first photographing apparatus; a visual target decision means that tentatively calculates a position of the visual target based on an image photographed by the second photographing apparatus, and decides the position of the tentatively calculated visual target based on a relative positional and pose relationship between the first photographing apparatus and the second photographing apparatus; a visual line information calculation means that calculates visual line information defined when the subject watches the visual target, based on the determined position of the eye and the decided position of the visual target; a shape design means that designs a shape of a spectacle lens based on predetermined prescription information and the calculated visual line information; and a pseudo moving means that detects, at predetermined time intervals, a position and a pose of a head of the subject based on the image photographed by the first photographing apparatus, and moves, at predetermined time intervals, the decided position of the visual target, in a pseudo manner, by an amount corresponding to a difference of the position of the head before and after detection and a difference of the pose of the head before and after the detection so that the position and the pose of the head of the subject is maintained, in a pseudo manner, before and after the detection, wherein the visual line information calculation means calculates the visual line information based on the determined position of the eye and the position of the visual target moved in a pseudo manner.