摘要:
A method of manufacturing glass parts for connection of glass fibers is provided, which can improve the accuracy of the cross-sectional size of a through hole in the glass part. A mother glass having a similar cross section to a desired cross section of a glass part having a through hole is prepared, and the prepared mother glass is drawn while it is heated. The mother glass is made of a glass having a maximum devitrification speed of 100 μm or less per minute.
摘要:
A cup attaching apparatus for attaching a cup for eyeglass lens processing to a subject lens to be processed, includes: an imaging optical system, which obtains an image of the lens by illuminating the lens with rays of light shaped to be larger in diameter than the lens; a display; a display control unit, which displays, on the display, the obtained lens image and an alignment mark superimposed on the obtained lens image, the alignment mark having substantially the same contour as a small lens portion of a bifocal lens; a first input unit, which inputs an amount of offset of the alignment mark with respect to a cup attachment center; and a second input unit, which inputs layout data for layout of the lens with respect to a target lens shape, wherein the display control unit determines a display position of the alignment mark based on the inputted offset amount and layout data, and displays the alignment mark at the determined display position on the display.
摘要:
A glass capillary for DNA analysis is provided, which allows the DNA detection efficiency of a DNA analyzer that uses electrophoresis to be increased, and allows the DNA analyzer to have a simple structure. A glass capillary for DNA analysis has an internal hole, and each of the glass capillary and the internal hole has a rectangular cross section. Since the glass capillary and the internal hole each have a rectangular cross section, scattering of the laser beam at the surfaces of the glass capillary can be prevented and hence the transmittance of the laser beam can be increased. As a result, the detection efficiency of the electrophoretic DNA analyzer can be increased, and moreover the analyzer can be given a simple structure.
摘要:
A method of manufacturing glass parts for connection of glass fibers is provided, which can improve the accuracy of the cross-sectional size of a through hole in the glass part. A mother glass having a similar cross section to a desired cross section of a glass part having a through hole is prepared, and the prepared mother glass is drawn while it is heated. The mother glass is made of a glass having a maximum devitrification speed of 100 &mgr;m or less per minute
摘要:
An eyeglass lens processing system, including: a data input unit, which inputs frame shape data for processing a lens to be fitted to an eyeglass frame and layout data for providing a layout of the lens with respect to a frame shape; a lens processing unit, having two shafts for clamping the lens, for grinding a periphery of the lens; a first conveying unit, which conveys a tray on which the lens is placed and to which a management code is applied, the management code interrelating the lens placed on the tray to the data inputted by the data input unit; a lens measuring unit, which obtains at least an optical center position of the lens; a second conveying unit that picks and holds the lens, disposes the lens at a predetermined position of the lens measuring unit, and mounts the lens to the shafts of the lens processing unit after measurement by the lens measuring unit; and an arithmetic unit, which obtains processing data based on: (1) data, read out based on the management code applied to the tray from the data inputted by the data input unit, and (2) measurement data obtained by the lens measuring unit, the arithmetic unit being connected to the lens processing unit.
摘要:
An eyeglass-frame-shape measuring device for measuring a lens frame shape of an eyeglass frame has a holding mechanism for holding the frame in a predetermined condition, a feeler movable while being kept in contact with a frame groove of the frame held by the holding mechanism, a measuring mechanism for obtaining information (rn, &thgr;n) on radius vector of the frame based on an amount of movement of the feeler, a moving mechanism having a first motor for moving the feeler in a direction of the radius vector of the frame, and a control mechanism for variably controlling driving of the first motor during measurement based on the information on the radius vector obtained by the measuring mechanism.
摘要:
An eyeglass lens grinding apparatus, which is designed to process an eyeglass lens so that the lens fits into an eyeglass frame. Frame shape data of an eyeglass frame is input, and a lens edge position on the lens is measured based on said frame shape data. Lens processing data is calculated based on the lens edge position and the frame shape data. The processing data is stored. The grinding wheels are controlled to process a plurality of lenses consecutively based on the same processing data until a signal requiring different processing data is issued. If a next set of lenses are to be processed, i.e. a different processing data is required, a made is switch to measure a lens edge position to newly obtain processing data.
摘要:
An eyeglass lens grinding apparatus for grinding a periphery of a lens to be processed. The apparatus includes: a lens rotation shaft which holds and rotates the lens; a lens rotating device having a lens rotating motor and a first transmission member which transmits a rotational torque of the lens rotating motor to the lens rotation shaft; an abrasive wheel rotation shaft which rotates a lens grinding abrasive wheel; and an abrasive wheel rotating device having an abrasive wheel rotating motor and a second transmission member which transmits a rotational torque of the abrasive wheel rotating motor to the abrasive wheel rotation shaft. A moving device causes a relative movement between the lens rotation shaft and the abrasive wheel rotation shaft to vary an axis-to-axis distance between an rotation axis of the lens rotation shaft and an rotation axis of the abrasive wheel rotation shaft, thereby brining the lens into pressure contact with the abrasive wheel for processing. A detector detects a state of rotation of the lens or the abrasive wheel. A controller judges whether the lens has been completely processed, based on a result of detection by the detector.
摘要:
An eyeglass lens grinding apparatus which is designed to ensure that the lens processing operation proceeds smoothly enough to streamline the overall process flow. Processing information about right and left eyeglass lenses is provided on the basis of information about configuration of the eyeglass frame and information about a layout of each eyeglass lens with respect to the eyeglass frame. The processing information about the eyeglass lenses is stored in a memory even after processing has ended. Information about size correction is entered to modify the processing information. Lens corrective processing information is provided on the basis of the entered corrective information and the processing information stored in the memory. After sequentially processing the right and left eyeglass lenses on the basis of the processing information, corrective processing is carried out on the basis of the corrective processing information.
摘要:
An eye refractive power measuring apparatus having an opacity discriminant function of a crystalline lens comprising a projecting optical system for projecting a target for eye refractive power measurement onto a fundus of an eye to be examined, a detecting optical system for detecting the target image reflected from the eye fundus, a device coupled to the detecting optical system for measuring refractive power of the eye in response to the detected target image, an irradiating optical system for irradiating the eye fundus with a retroillumination light, and an observing optical system for observing a crystalline lens of the eye illuminated by the retroillumination light reflected from the eye fundus to determine the opacity of the crystalline lens.