Hoya Corporation

Kabushiki Kaisha Topcon

Hoya Lens Corporation

Masahiro Jinbo

Takashi Daimaru

Hisanori Akiyama

Takashi Igarashi

Masahiko Samukawa

Takahiro Watanabe

Kenichi Watanabe

Kenji Miyashita

Norihisa Tanaka

Toshiro Yoda

Ryosuke Sato

Hiroshi Ota

Takeshi Yamada

Yasunori Ueno

Shuichi Sato

Hayao Akaba

Toyoji Wada

Takeshi Imizu

Ryousuke Satoh

A relationship between a rim shape and a position of a mounting hole is obtained based on a detection signal from the second position detector () by controlling a measuring element shifter () to move the leading end of a measuring element for a lens () to have contact with an refracting face of the lens (Lm) held in the lens holder.

Lens shape measurement device

To provide a calibration jig which can perform three-dimensional calibration of measurement errors in a spectacle frame shape measuring apparatus. The calibration jig is used for calibrating measurement errors of the spectacle frame shape measuring apparatus for measuring a shape of a spectacle frame, etc. A trace groove traced by a measuring probe of the spectacle frame shape measuring apparatus is a frame groove formed in an inner circumference of rims of the spectacle frame and provided for engaging with the bevel of a spectacle lens. The rims are secured to a frame body having rigidity higher than that of the rim. The frame groove has a displacement r in the radial direction, a displacement &#x3b8; in the rotational direction, and a displacement z in the height direction.

Jig, method and data generating apparatus for calibrating spectacle frame shape measuring apparatus, spectacle frame shape measuring apparatus and spectacle frame shape measuring calibrating system

An arithmetic control circuit () is configured to bring the measuring element () for a lens into contact with at least two points (measurement points P, P) of one of two refracting surfaces of the lens Lm held in the lens holder by controlling the measuring element shifter (driving motor), obtain the coordinates of the two points according to the detection signal from the position detector (linear scales), and obtain a curve value Cv of one refracting surface of the lens from the difference of the coordinates of the two points.

A light irradiation device () includes a UV lamp (), first and second optical filters () which transmit and block wavelengths within different specific ranges, and a filter switching mechanism () which selectively interposes the first and second optical filters () between the UV lamp () and an optical lens. The blocking wavelength of the first optical filter () is relatively longer than that of the second optical filter (). The first optical filter () is interposed between the UV lamp () and the optical lens since the start of curing a coating solution until a lapse of a predetermined period of time. When the predetermined period of time has elapsed, the second optical filter () is interposed between the UV lamp () and the optical lens to replace the first optical filter ().

Optical lens coating apparatus

A coating device () for a coating solution and a light beam radiating device () which cures the coating solution are arranged in a clean room (). Spectacle lenses () include a set of two lenses and are stored in a coating container (). The coating device () applies the coating solution to coating target surfaces of the spectacle lenses () in the coating container (). When the set of two spectacle lenses () coated with the coating solution are extracted from the coating container (), they are stored in a lens rack () and sealed by a transparent plate of the light beam radiating device (). After air in the lens rack () is purged with nitrogen gas, curing treatment for the coating solution is performed by the light beam radiating device ().

Coating apparatus for optical lens

Aims to enable to supply an optimal and dedicated spectacle lens or spectacle for each spectacle wearer, and also to verify a spectacle wearing state appropriately. A spectacle wearing parameter measurement system, sets a spectacle wearer to be in a distance vision state or a near vision state in which, in the near vision state, at least, one of an eyeball rotation angle and a near vision target distance is changeable optionally; takes an image of the spectacle wearer set in the distance vision state or near vision state by an image pickup device; imports the image; and measures and calculates a spectacle wearing parameter based on the image. A server computer of a factory received the image uses the image data to manufacture a spectacle lens or a spectacle. Further, a spectacle wearing test system verifies whether or not a spectacle wearing state is appropriate based on a figure obtained by a comparison comparing a spectacle wearing parameter measured at present time after manufacturing the spectacle and the spectacle wearing parameter before manufacturing the spectacle.

Spectacle lens supply system, spectacle wearing parameter measurement apparatus, spectacle wearing test system, spectacle lens, and spectacle

When a forming a bevel on a lens, the value of the bevel curve is calculated based on the value of the curve of the concave face, a reference axis of the bevel curve is determined to be in the same direction as the curvature of the concave face, a reference position on the peripheral edge of the lens in the first portion having the minimum thickness is determined based on the thickness of the first portion, a correction for the initial reference axis of the bevel curve is obtained, an angle of inclination from the direction of the initial reference axis of the bevel curve is obtained based on the correction and the locus of the bevel is determined based on the value of the bevel curve, the reference position and the angle of inclination.

Method for deciding a bevel curve, method for determining the locus of a bevel, method for processing a lens and apparatus for processing a lens

Method for deciding a bevel curve, method for determining a locus of a bevel, method for processing a lens and apparatus for processing a lens

An apparatus for processing a lens comprising a rotating tool for chamfering used for chamfering a peripheral portion of a spectacle lens, the apparatus comprising: a holding shaft supporting the lens and a lens-holding unit that rotates the holding shaft and displaces the lens towards the finishing unit based on data describing a shape of a lens frame and a rotation angle of the holding shaft; and a means for positioning in an axial direction that displaces the lens in an axial direction of the holding shaft; wherein the rotating tool for chamfering includes a rotating tool having a hemispherical shape, wherein a chamfering angle, or a chamfering amount, is set in accordance with a displacement in the axial direction of the means for positioning in an axial direction and a displacement of the lens-holding unit.

Apparatus for processing a lens

A apparatus comprises a portion for setting a loadwhich sets the load of pressing a lens to a rotating tool, a portion for setting the rotation speed of a lens shaftwhich sets the rotation speed and the direction of rotation of a lens-holding shaft and a portion for setting the condition of water supplywhich sets the condition for injecting a cooling liquid to the lens. These conditions are set in each step of the processing of the lens. The load, the relative directions of rotation of the lens and the rotating tool (the up cut or the down cut) and the condition for injecting the cooling liquid are controlled based on the conditions of the processing set by the above portions.

Apparatus for processing a lens and process for processing a lens

A spectacle frame shape measuring apparatus includes a measurement element holding mechanism. The measurement element holding mechanism holds a measurement element in a substantially loadless state along a frame groove formed in the inner circumferential surface of a rim of a spectacle frame. The measurement element holding mechanism includes a rod, balance spring, and evacuating mechanism. The rod is vertically movable and has an upper end portion on which the measurement element is mounted. The balance spring pushes the rod upward to hold the measurement element at a loading position during shape measurement. The evacuating mechanism regularly evacuates the measurement element to an evacuation position, thereby performing three-dimensional measurement of a rim shape. A spectacle frame shape measuring apparatus holder is also disclosed.

Spectacle frame shape measuring apparatus

An apparatus for and process of attaching a lens holder to an uncut lens for a spectacle lens which enables efficient attachment of the lens holder at a position without the processing interference when the lens holder is attached to a progressive multifocal lens or a multifocal lens. The lens holder can be attached to the uncut lens at a position set outside of a range of processing interference when the positions of hidden marks or an edge of a segment are obtained by inputting and processing an image of the uncut lens by the apparatus for image processing, the obtained positions of the hidden marks or the edge of the segment, data of the spectacle frame and lens holder buildup area shape are processed and the lens holder is attached to the uncut lens.

Growing community of inventors

Shinjyuku-ku, Japan

Masahiro Jinbo