Abstract: Disclosed is a machine for acquiring images (1) including: a support (10) for optical lens, on one side of the support, a light source (20), on the other side of the support, an image sensor (30) suitable for capturing at least two images of the optical lens illuminated by the light source, viewed from two different angles.

Abstract: Disclosed is a method of determining a guideline for trimming an optical lens to be trimmed in view of its mounting in a spectacle frame in which is mounted at least one reference optical lens, including: removing the reference optical lens; fixing the removed reference optical lens on a support of a machine for acquiring images; acquiring, with an image sensor, at least one first image of the removed reference optical lens; processing each acquired first image in order to deduce therefrom trimming parameters for the optical lens to be trimmed; and defining the trimming guideline as a function of the trimming parameters. Before or after the first acquiring step, a second step of acquiring a second image of the reference optical lens mounted in the spectacle frame, and in the processing step, the trimming parameters are defined as a function also of the second image is included.

Abstract: A surface shape measurement method that divides a surface shape of an object (107) into a plurality of partial regions (201, 202, 203, 204) to obtain partial region data and that stitches the partial region data to measure the surface shape of the object, and the method includes the steps of calculating sensitivity of an error generated by a relative movement between the object and a sensor (110) for each of the partial regions, dividing the surface shape of the object into the plurality of partial regions to obtain the partial region data, obtaining the partial region data, calculating an amount corresponding to the error using the sensitivity, correcting the partial region data using the amount corresponding to the error, and stitching the corrected partial region data to calculate the surface shape of the object.

Abstract: The present invention is concerned with a drum printer in which the loading and unloading of printing medium onto and off a drum of the printer is performed without interrupting or decelerating the drum rotation and the printing process.

Abstract: A system (21) is proposed for transferring data to plate-like data carriers (23, 23′), the system comprising a holder (22, 22′), shaped at least partly as an inner cylinder, to arrange the data carriers (23, 23′)—of which the side provided to accept data faces the cylinder axis (29) of the holder (30)—and a transfer head (30) which can rotate about this cylinder axis and has at least one transfer means (24)—for transferring the data to the data carrier (23, 23′) the holder (22, 22′) and the transfer head also being capable of moving relative to each other in the direction of the cylinder axis (29) and the distance between at least one surface of the transfer head (30) or transfer means (24) and the data carrier—during the transfer of data—preferably being less than ¼ of the holder diameter and particularly preferably less than 1 cm.

Abstract: A vacuum system can remove ablated particles from an internal drum platesetter which has a drum for supporting a photosensitive medium, a carriage moveable in a direction parallel to a longitudinal axis of the drum, and a laser mounted onto the moveable carriage for generating a beam to create an image on the medium during movement of the carriage, the beam ablating particles of the medium during creation of the image. The vacuum system includes: a vacuum head fixedly attached to the moveable carriage, and having at least one chamber for receiving the ablated particles through a slot located proximate to a periphery of the vacuum head; and an exhaust system connected to the vacuum head and including ductwork, at least one fan and at least one filter, for extracting the ablated particles from the at least one chamber of the vacuum head.

Abstract: A lens inspection system 10 has two cameras 50, 51 for capturing plan and edge images views of a lens 20 and providing pixel data signals representative of the images. The pixel data signals corresponding to the plan and edge images are analyzed by a computer 70. The computer uses the pixel data signals to calculate the circumference of the image, the lengths of radii to circumferential pixels, and the bevel angle of the lens 20. Such data are compared to data stored in memory 710 and a visual display 74 indicates the difference between the image and the stored data.

Abstract: Apparatus for clamping receiver sheets to the print drum of a thermal transfer printer. The apparatus includes a clamp assembly mounted for radial movement and having a clamp strip extending over the drum periphery and an interior longitudinal body coupled to that strip at a plurality of axially spaced locations. A longitudinal lever member extends axially within the drum from a pivot point at one drum end to an actuation arm at the other drum end and has a pivot arm coupled to a central portion of the clamp body. Springs urge the clamp assembly radially inwardly and an actuator mounted on the other drum end selectively moves the lever member radially outwardly.

Abstract: A drawing system in a wire-cut electrodischarge machine having two rectilinear motion devices arranged at right angles on a base for moving a workpiece and a wire relatively to each other, comprising a writing device, a cylindrical drawing mount supported rotatably, and a motion converter for converting linear movement into rotational movement, the drawing mount being connected via the motion converter to one of the rectilinear motion devices while the writing device is connected to the other of the rectilinear motion devices.

Abstract: An optical information carrier includes a cylinder (1) with a recording layer (2) and bushings (3,4) located at butt ends of the hollow cylinder (1) and insulating the recording layer (2) from the environment. A method for erasing information recorded on the optical carrier uses a high-frequency electrical discharge produced inside the air-tight closed space (5) of the hollow cylinder (1). An optical storage device realizing the method includes an erasing unit (11) having a circuit for initiating a high-frequency discharge, which has electrodes (12,13) between which the optical carrier (10) is located so that the high-frequency discharge is initiated inside the closed air-tight space (5).

Abstract: An optical information carrier includes a cylinder (1) with a recording layer (2) and bushings (3,4) located at butt ends of the hollow cylinder (1) and insulating the recording layer (2) from the environment. A method for erasing information recorded on the optical carrier uses a high-frequency electrical discharge is produced inside the air-tight closed space (5) of the hollow cylinder (1). An optical storage device realizing the method includes an erasing unit (11) having a circuit for initiating a high-frequency discharge, which has electrodes (12,13) between which the optical carrier (10) is located so that the high-frequency discharge is initiated inside the closed air-tight space (5).

Abstract: Disclosure is made of an optical memory wherein a cylindrical information carrier (2) is disposed in a stationary cylindrical container (14) filled with a liquid or gaseous medium transparent for the radiation flux emitted by a source (1) of modulated coherent radiation. The cylindrical information carrier (2) is equipped with a rotational drive. A recording coating (12) is applied on a tubular base (11) of the cylindrical information carrier (2). The cylindrical information carrier (2) is optically connected with the source (1) of modulated coherent radiation and with an addressing unit (3) arranged so that its optical elements can move axially with respect to the cylindrical information carrier (2).

Abstract: Disclosure is made of an optical storage device wherein a cylindrical information carrier (2) with a recording medium (12) applied on a tubular base (9) is disposed in a stationary cylindrical container (3) having a window (4) in the lateral wall thereof. A lens (5) is secured in the window (4) of the cylindrical container (3) to let through the radiation flux from a source (1) of modulated coherent radiation. The cylindrical container (3) is filled with a liquid or gaseous medium transparent for the radiation flux. The length of this cylindrical container (3) is at least twice as long as that of the recording coating (12) applied on the tubular base (9) of the cylindrical information carrier (2) equipped with drives for rotation and axial motion.

Abstract: This invention relates to a sub surface pressure gauge comprising an axially displaceable drum with a chart disposed within a housing and having a selective axial movement, rotatable stylus for recordal of pressures on said chart provided on said drum. A motor actuates the drum through a programmable switch, the output shaft of said motor providing for linear displaceable movement of the drum controlled by said switch.

Abstract: Disclosed herein is a facsimile apparatus with an improved sheet transport means including a transport path and a feeder in the path for moving sheets along it to a scanner. A sensor is situated in the path for sensing the length of the sheets being fed to the scanner. The sensor is utilized for detecting the length of the document such that it may be removed from the scanner by engaging the trailing edge of the sheet.

Abstract: A signal actuated recorder device has a recording drum connected to be actuated only when sensing a signal. The recorder is connected to measure the torque employed to make up joints of tubular goods into a string, for example, and can also be used in other applications, such as the testing of joints of pipe.In making up a string of production tubing, a hydraulic strain gauge assembly is connected to the tubing tongs to measure the magnitude of torque imparted into the tubular goods. The pressure signal from the piston of the gauge actuates a motor of the recorder which advances the drum one increment. At the same time, the pressure signal is utilized to move a scribe in proportion to the magnitude of the signal.