摘要:
An apparatus and a method for processing lens peripheries which allow lenses to be properly fitted in a frame, i.e., which processes lenses with high dimensional accuracy. For this purpose, the lens periphery processing apparatus and method are designed to comprise an input device for inputting the configuration of lens frame portions of the eyeglasses frame which is a result of three-dimensional measurement, a calculation device for deriving peripheral lengths of the lens frame portions from the three-dimensional lens frame portion configuration inputted by the input device, a tapered edge curve determining device for determining a curve .�.value.!. defined by the locus of the tapered edge of each lens, and a computing device for computing the locus of the tapered edge of each lens which substantially coincides with the peripheral length of the associated lens frame portion which is obtained by the calculation device.
摘要:
A subject lens is held by two chuck shafts, which are rotated synchronously by pulse motors during a grinding operation. A group of grinding wheels are mounted on each of rotary shafts of right and left lens grinding parts. The rotary shafts are disposed on opposite sides of the chuck shafts. A desired grinding wheel for each processing is selected by moving the rotary shaft vertically. To grind the subject lens, the rotary shafts are moved independently by pulse motors toward the rotation axis of the chuck shafts based on lens frame shape data in the case of rough processing.
摘要:
A method for forming Ti--TiN laminates adapted to reduce the formation of dust particles harmful to semiconductor devices without detriment to productivity, and a magnetron cathode for performing the method are provided. Ti films and TiN films are formed through sputtering of a Ti target using a multi-chamber system comprising at least two chambers each having a magnetron cathode in which a magnet can be moved to accommodate different films. The type of film being formed in each chamber is periodically alternated to prevent a buildup of TiN film adhered to the inner walls of the chambers which peels and causes dust particles.
摘要:
An apparatus and a method for processing lens peripheries which allow lenses to be properly fitted in a frame, i.e., which processes lenses with high dimensional accuracy. For this purpose, the lens periphery processing apparatus and method are designed to comprise an input device for inputting the configuration of lens frame portions of the eyeglasses frame which is a result of three-dimensional measurement, a calculation device for deriving peripheral lengths of the lens frame portions from the three-dimensional lens frame portion configuration inputted by the input device, a tapered edge curve determining device for determining a curve value defined by the locus of the tapered edge of each lens, and a computing device for computing the locus of the tapered edge of each lens which substantially coincides with the peripheral length of the associated lens frame portion which is obtained by the calculation device.
摘要:
An IC socket, capable of being applied to an IC device having short lead pins and ensuring reliable contact with the lead pins used, comprises contacts each having a first contact element that is substantially fixed and a second contact element that is elastically deformable, and an actuator for moving the second contact elements of the contacts. The second contact elements have their centers formed as engaging means for engaging with the actuator, and their portions near the surface of a socket body are formed as contacting means to be brought into contact with lead pins of an IC device. The second contact elements are located close to the first contact elements. When an IC device is inserted, the actuator separates the second contact elements from the first contact elements.
摘要:
A sheet delivery mechanism includes a pair of delivery rollers which deliver a sheet along a sheet delivery passage of a sheet treatment apparatus for predeterminately treating the sheet, a sheet halting member for halting the sheet, and a pinching force adjusting member. The pinching force adjusting member adjusts the delivery rollers to place them into a first state where the sheet pinching force of the delivery rollers is relatively small so that the delivery rollers can slip on the halted sheet and into a second state where the sheet pinching force is relatively great so that the sheet can be delivered in the case where a sheet halt is released for delivery.