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| Number | Title | Issue Date |
| 4561721 | Attenuator for optical radiation In the representative embodiments described herein, an attenuator of optical radiation, and specifically high-intensity laser radiation, comprises a plurality of diffracting sheet members, containing a plurality of apertures, disposed at an angle to the i... | 12/31/1985 |
| 4555610 | Laser machining system A laser machining system with x, y and z-axis beam manipulating mechanisms to perform welding, cutting and localized heat treating operations on a workpiece with the operation of the system for each operation and the changeover between operations being un... | 11/26/1985 |
| 4553017 | Energy beam focusing apparatus and method Apparatus and method for increasing the power density of an energy beam (e.g. a laser beam) by focusing an incident beam to an anisometric configuration and thereafter focusing the anisometric beam to a modified, preferably isometric, configuration. A ser... | 11/12/1985 |
| 4545018 | Calibration of automated laser machining apparatus A computer controlled apparatus is disclosed for controlling a sequence of machine steps utilizing a laser beam whose power level is adjusted in accordance with its parameters as a function of a measurement of the power level of the generated laser beam. ... | 10/01/1985 |
| 4520261 | Detector for the deviation of the optical axis in laser processing apparatus This invention relates to a device for detecting the amount of deviation of the optical axis of laser beams from a predetermined point at which a workpiece is to be processed in a laser processing apparatus. The detector includes a laser resonator, a device fo... | 05/28/1985 |
| 4507537 | Silent discharge-type laser device A silent discharge-type laser device in which silent discharge is established to produce a laser output by applying a high-frequency voltage across a set of opposing electrodes, at least one of the electrodes being a dielectric electrode; signals which ar... | 03/26/1985 |
| 4499362 | Rotary beam chopper with continuously variable duty cycle Apparatus for converting a continuous incident laser beam into a pulsed laser beam, with a duty cycle of pulsation that is substantially continuously variable between a minimum value and a maximium value, is disclosed. The apparatus uses a rotatable disc ... | 02/12/1985 |
| 4470414 | Laser surgical knife A laser surgical knife characterized by switches, which can adjust an output power within the safe scope from the output power preliminarily set for a laser oscillator, mounted on an attachment of said laser surgical knife which is held by an operating su... | 09/11/1984 |
| 4450358 | Optical lithographic system A high resolution optical lithographic system for exposing 0.25 microns to 0.5 microns linewidths on integrated circuit substrates. The system comprises a deep ultra-violet (UV) source of illumination in conjunction with an optical condenser system and hi... | 05/22/1984 |
| 4398094 | Equipment and method for annealing semiconductors A semiconductor is annealed by an equipment which comprises a short-arc type rare gas discharge lamp as a heat source possessing the condition, 140ࣙP×lࣙ16, where l (mm) is the distance between an anode and a cathode and P is the sealed gas pressure (... | 08/09/1983 |
| 4335939 | Optical modulators and apparatus including such modulators An optical modulator which is capable of passing the greatest intensity of light incident upon it when the light incident upon it is either unpolarized or has a partial or variable state of polarization, comprises a beam splitter (1) to resolve the light ... | 06/22/1982 |
| 4330699 | Laser/ultrasonic welding technique A non-contact laser/ultrasonic welding technique for strengthening the con laser weld by the addition of ultrasonic cavitation and cleaning. A high powered laser applies heat to a weld joint to produce a melt. The output of the laser, or a second laser, ... | 05/18/1982 |
| 4323755 | Method of making a machine-readable marking in a workpiece A method for producing a machine-readable coded marking in the surface of a workpiece comprising vaporizing sequentially the surface portions of selected ones of a series of contiguous areas of unit widths of the surface.... | 04/06/1982 |
| 4317981 | Method and apparatus for controlling a movable energy source when it is operated to heat the surface of an object A method of controlling a movable energy source includes controlling the velocity and the power of the energy source moved along the predetermined path in accordance with a difference between the predetermined and the measured temperature at different are... | 03/02/1982 |
| 4315130 | Method of treating object by laser beam and apparatus therefor There are disclosed a laser treatment method and an apparatus therefor in which a laser beam is irradiated on an object to be treated. The laser beam emitted from a laser apparatus is divided into a plurality of fractional beams, and the fractional laser ... | 02/09/1982 |
| 4242152 | Method for adjusting the focus and power of a trimming laser A laser is used to cut slots into a film deposited on a substrate so that a clean kerf is produced without harming the substrate. The laser cut vaporizes the film material as the removal mechanism and some of the vaporized material will redeposit over the... | 12/30/1980 |
| 4229232 | Method involving pulsed beam processing of metallic and dielectric materials A pulsed beam generator produces a short duration pulsed beam for thermal processing of selected regions of metallic and dielectric materials. The pulse beam is directed towards the material and irradiates selected surface regions thereof. Energy deposite... | 10/21/1980 |
| 4201905 | Laser cutting head attachment for punch presses A turret punch machine tool equipped with controlled automatic x-y axis workpiece movement mechanisms for moving the workpiece over a stationary work table section adjacent a punching station is provided with a separate laser beam generator and with a too... | 05/06/1980 |
| 4190759 | Processing of photomask A laser beam of a pulse width 10 to 20 nanoseconds is irradiated and scanned relatively and two-dimensionally on a metal thin film formed on a transparent substrate from the transparent substrate side and through the transparent substrate with a superposi... | 02/26/1980 |
| 4154530 | Laser beam error correcting process A laser beam is employed to trim monolithic integrated circuits in wafer form in a step and repeat machine. The step and repeat action is adjusted to bring successive circuits on the wafer into trimming relationship with the laser. The circuit is measured... | 05/15/1979 |
| 4152575 | Method of material processing utilizing an interrupted beam of continuous wave laser radiation A method of material processing, in particular welding, utilizing high frequency interruption of a continuous wave beam of radiation is disclosed. The pulses of laser radiation are generated at a pulse repetition rate more rapid than the thermal response ... | 05/01/1979 |
| 4151008 | Method involving pulsed light processing of semiconductor devices A pulsed laser or flash lamp produces a short duration pulse of light for thermal processing of selected regions of a semiconductor device. The light pulse is directed towards the semiconductor device and irradiates selected surface regions of the device ... | 04/24/1979 |
| 4135902 | Method and apparatus for drawing optical fibers A laser beam (FIG. 1; 28) is reflected from a first oscillating galvanometer controlled mirror (14) onto a second oscillating galvanometer controlled mirror (15). The laser beam is reflected from the second mirror as a pattern (29) having an annular cross... | 01/23/1979 |
| 4110594 | Pattern mask generating method and apparatus High-density multilayered integrated circuits are fabricated by first generating all photomasks for the respective layers concurrently during the same exposure operation. Since ambient conditions are identical during generation of these related masks, mas... | 08/29/1978 |
| 4092515 | Laser method of precision hole drilling A method for obtaining a hole in a workpiece essentially free of a recast layer and heat affected zone with laser radiation is disclosed. Pulses of laser radiation having durations comparable to the time required to vaporize workpiece material, typically ... | 05/30/1978 |
| 4092518 | Method of decorating a transparent plastics material article by means of a laser beam A method for the decoration of a transparent plastics material article comprising the steps of providing an article having a transparent plastics material body to be decorated, said article body to be decorated having internal stresses and having characte... | 05/30/1978 |
| 4087281 | Method of producing optical image on chromium or aluminum film with high-energy light beam A latent image is produced on a metallic film having at least one layer of chromium or aluminum by exposing the film to a light pattern. The intensity of the light from the light pattern must be below the threshold for evaporation of the metallic film. Th... | 05/02/1978 |
| 4081794 | Alloy junction archival memory plane and methods for writing data thereon A memory plane for an archival, non-volatile mass storage memory has a planar semiconductor diode with each of a plurality of small P-N junction diodes alloyed into the surface of its fabricated layer responsive to a selectively-actuated scanned energy be... | 03/28/1978 |
| 4044222 | Method of forming tapered apertures in thin films with an energy beam An energy beam, such as the coherent output of a laser, is applied to a thin film in a controlled manner, preferably as a pluse. The length of the pulse is regulated to form a tapered aperture in the film. The duration, energy and wavelength of the beam p... | 08/23/1977 |
| 4037075 | Image reproduction systems In a method of preparing a screened reproduction, a laser beam modulated in an on-off manner scans a film or plate comprising a substrate resistant to the laser beam and a two-layer coating which is removed by the laser beam, after which correction is car... | 07/19/1977 |
| 4037076 | Apparatus for balancing rotating bodies Apparatus for balancing a rotating body in which the body is mounted for rotation and operatively coupled with a mechanism for rotating the body. Sensor means coupled to the rotating body transmit an unbalance signal in response to unbalance of the body t... | 07/19/1977 |
| 4032743 | Laser microperforator A method and apparatus for forming rows and columns of closely spaced micron sized holes in a thin foil, including a cylindrical member and means for rotating it. There are means for mounting a plurality of axially extending foil strips on the cylindrical... | 06/28/1977 |
| 4029535 | Process for seaming fabrics comprising thermoplastic fibers using laser beams A process for the seaming of two sheets of thermoplastic polymers, especially fabrics comprising thermoplastic fibres, by passing them around and through a pair of nip rolls and directing a pulsed laser beam at their line of confluence.... | 06/14/1977 |
| 4015100 | Surface modification Properties of a surface layer of a metal part are modified by changing its composition and microstructure using focused radiant energy. Minor components of an alloy having the metal of the substrate as the major component thereof are applied to the surfac... | 03/29/1977 |
| 4001840 | Non-photographic, digital laser image recording A non-photographic, digital laser image recording and reading method and apparatus for recording and reading visual, two-dimensional replicas or representations of objects, pictures, illustrations, computer outputs and the like. A flat-field twin objectiv... | 01/04/1977 |
| 3977478 | Method for laser drilling subterranean earth formations Laser drilling of subterranean earth formations is efficiently accomplished by directing a collimated laser beam into a bore hole in registry with the earth formation and transversely directing the laser beam into the earth formation with a suitable refle... | 08/31/1976 |
| 3974016 | Bonding of thermoplastic coated cylinders A cylindrical strand with a thermoplastic outer shell (e.g., plastic insulated wire) is bonded along its length to a similar or different cylindrical strand by laser heating. The strands are brought into contact with one another at a contact point. A lase... | 08/10/1976 |
| 3962558 | Method and apparatus for drilling watch jewels or other workpieces by means of laser beams In order to drill holes in watch jewels or the like a laser beam is produced having pulses in which successive spikes are formed with a substantially constant period, the first spike being greater in intensity than the subsequent spikes which can have equ... | 06/08/1976 |
| 3942878 | Apparatus for modulating a high energy beam An apparatus for modulating a high energy beam such as a laser beam comprising a rotor having a plurality of circumferentially spaced selectively shaped openings formed in a periphery thereof and adapted to rotate in the path of said high energy beam for ... | 03/09/1976 |
| 3937917 | Method for producing and heating a plasma Microwave-frequency electromagnetic energy is stored in a superconducting resonant structure. The non-ionized solid material from which the plasma is to be obtained is placed within said structure and this latter is excited by a generator of the klystron ... | 02/10/1976 |
