Kabushiki Kaisha Topcon

Yasuhito Eto

Kenichi Watanabe

Yasuo Suzuki

Yoshiyuki Hatano

Takahiro Watanabe

Takeshi Nakamura

Yoshimasa Ogawa

Toshihiro Iwai

Takumi Uchiyama

A lens grinding processing apparatus of the present invention has lens rotating shaftsandfor holding an eyeglass lens ML, a lens retaining members () fixed respectively to opposed end sections of the lens rotating shaftsandcapable of slanting adjustably, a drilling device (drilling processing device) for drilling a hole for a point frame into the slanted eyeglass lens ML, and a grinding stone (grinding stone, chamfering stones) for grinding and processing a circumferential part of the eyeglass lens ML.

Lens grinding processing apparatus

A lens shape data processing apparatus and a lens grinding machine having the same apparatus in which the lens shape data reading out and the layout setting work for another spectacle lens can be conducted during the lens edge measurement or the grinding process is provided. The lens shape processing apparatus comprises a memoryfor storing a plurality of lens shape information for the spectacle frame measured by a frame readera liquid crystal display unitincluding an image display sectionfor displaying the lens shape based on the lens shape information and an operation contents display sectionfor displaying items for switching a plurality of screens, a plurality of keys corresponding to the items of the operation contents display section, and an arithmetic control circuitfor setting the data for grinding an unprocessed lens into a lens shape based on the lens shape information, wherein the keys are used both to switch to a screen for selecting and accessing one of the lens shape information stored in the memory, and to access the preceding lens shape information and the next lens shape information or new lens shape information.

Lens shape data processing apparatus and lens grinding machine having the same apparatus

A lens shape measuring apparatus is disclosed, which is capable of identifying a size of an outer-diameter shape of a lens fixing jig by using a measuring element also used for measuring a lend shape. This lens shape measuring apparatus comprising: a lens fixing jig installed in an eyeglass lens to be processed to clamp the eyeglass lens; a lens rotation shaft for clamping and rotating the lens to be processed; a measuring element abutted on a refracting surface of the lens clamped by the lens rotation shaft; a measuring element position switching mechanism for controlling rotation of the measuring element around a rotation shaft roughly parallel to the lens rotation shaft; and a measuring unit for measuring a moving distance of the measuring element in a direction roughly parallel to the lens rotation shaft. This lens shape measuring apparatus also comprises arithmetic control means for moving a tip of the measuring element relatively in the direction roughly parallel to the lens rotation shaft, measuring a distance from a measuring reference position of the measuring element to an abutting position of the same by the measuring unit, and identifying a shape of the lens fixing jig based on a result of the measurement.

Lens shape measuring apparatus

An initial position setting method for grinding work apparatus includes: a grind stone a pair of lens rotating shafts which are capable of approaching and drawing apart each other along a normal line of the grind stone a ditch excavation grind stone and chamfering grind stones . A measurement standard with a predetermined shape is adapted to be held by the lens rotating shafts The ditch excavation grind stone and the chamfering grind stones are adapted to be moved to the predetermined position. The lens rotating shafts are adapted to be moved in order for the measurement standard to contact with the ditch excavation grind stone or the chamfering grind stones to obtain a moving distance of the lens rotating shafts when the measurement standard is contacted and to carry out an initial setting for moving distance of the ditch excavation grind stone or the chamfering grind stones on a basis of the moving distance of lens rotating shafts and a dimension of the measurement standard.

Initial position setting method for grinding device

Disclosed is a grinding fluid supply device of a lens grinding apparatus. The grinding fluid supply device includes first grinding fluid supply means for supplying a grinding fluid in a tangent direction of a circular grinding wheel, which has a grinding surface formed on its circumferential surface, with an interval above a grinding surface and allows an upper portion and a rear side portion of the grinding surface to be covered with a curtain of the grinding fluid spaced from the grinding wheel when a processed lens is subjected to a grind processing with the grinding surface of the grinding wheel by rotatively driving the grinding wheel around an axis; and second grinding fluid supply means for insufflating the grinding fluid to the grinding surface.

Grinding fluid supply device of lens grinding apparatus

The present invention relates to an apparatus for displaying a contour of a lens-shaped template formed to be fit in a lens frame of an eyeglass frame. The contour is displayed on a display in a same size of a real lens-shaped template. The apparatus includes a display for displaying a cross-sectional V-shaped edge figure, a position, and a thickness at an arbitrary point of the contour. The invention also relates to an apparatus for displaying a lens shape. The apparatus includes first display means for displaying a contour of a lens-shaped template formed to be fit in a lens frame of an eyeglass frame, second display means for displaying a cross-sectional V-shaped edge figure at an arbitrary point of the contour, and third display means for displaying a first mark indicating a position of the contour corresponding to positions of at least two edge figures displayed by the first display means.

Apparatus for displaying a contour of a lens-shaped template

An apparatus is provided for measuring a contour of a lens-shaped template formed to be fit into a lens frame of an eyeglass frame. The apparatus includes a lens-shaped template holding device (111) for holding a lens-shaped template (112) formed to be fit into a lens frame (LF, RF) of an eyeglass frame (MF), a measurement element (219) for measuring the contour of the lens-shaped template (112) held by the lens-shaped template holding device (111), a measurement starting device (13) for starting the measurement of the lens-shaped template (112) by the measurement element (219), and a measurement element positioning device (700) for positioning the measurement element (219) at a reference point when the measurement starting device (13) starts the measurement element (219) measuring the lens-shaped template (112).

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Tokyo, Japan

Yasuhito Eto