 Light exposure method for the fabrication of semiconductor devices |
| Therefore, an object of the invention is to solve the above-mentioned problems encountered in the ... |
|
| Method and apparatus for optimizing peak detection in a chromatogram |
| I claim: 1. A method of identifying peaks corresponding to the same chemical component in a series ... |
|
| Apparatus and method of multi-dimensional chemical separation |
| The present invention provides a practical means of performing comprehensive multi-dimensional ... |
|
| Electronic center |
| Based on consideration of the above problems, an object of the present invention is to provide an ... |
|
| Contacting caliper gauge |
| A contacting caliper gauge for measuring the thickness of a sheet material, moving in a direction ... |
|
| Device for measuring or metering and regulating the mass of a flow of gas |
| I claim: 1. A device for measuring the mass of a flow of gas by means of a bypass system, ... |
|
| Apparatus and method for laser bias and modulation control |
| In accordance with the present invention, apparatus and a method for laser bias and modulation ... |
|
| Apparatus for repowering and monitoring serial links |
| Our invention deals with the use of an apparatus for repowering a serial link. The references use ... |
|
| Light communication system |
| It is therefore an object of the present invention to provide a light communication system in which ... |
|
| Local control for burst mode optical transmitters |
| The present invention is a method and apparatus for controlling a drive current of an optical ... |
|
|
Device for treating a body with a beam of rays
| Details |
Inventors: Ruckl, Siegfried;
Assignee: Schablonentechnik Kufstein GmbH (AT)
Primary Examiner: Albritton; C. L.
Assistant Examiner:
Attorney, Agent or Firm: Ostrolenk, Faber, Gerb & Soffen
A device (1) for programmed spot treatment of a body with a beam of rays, particularly a laser beam (7), using a lens system (4), in which the point of impact of the beam (7) describes a predetermined pattern on the surface of the body particularly a lacquer sealed rotary screen printing stencil 3a, as a result of a relative movement of the body with respect to the device. According to the invention the device (1) has means for maintaining a constant predetermined distance between the center of the lens system (4) and the center of the point of impact of the beam (7) of rays with the surface of the body. Said means for maintaining a constant distance comprise distance-determining means, preferably a scanner of the optical, inductive or capacitive type, for determining the distance of the surface of the body from a lens system (4) located between a light source and the body, displacement means (11,12,12',14,14',15), preferably electromagnets cooperating with anchoring plates and spring packets, for displacing the lens system, and control means, preferably a microprocessor, for controlling the displacement means (11,12,12',14,14',15) according to the difference between a set value and the measured value of the distance between the lens system and the surface of the body. The stencil 3a is supported by a roller 3. |
|
DETAILED DESCRIPTION I claim: 1.
A device for programmed spot treatment of a body with a beam of rays, using a lens systems, in which the point of impact of the beam describes a predetermined pattern on the surface of the body as a result of a movement which the body and the device carry out relative to each other, wherein the device has a source of rays, a lens system for directing rays from the source toward the surface of the body; and means for maintaining the constant predetermined distance between the lens system and the center of the point of impact of the beam of rays with the surface of the body as the body and the device move relatively.
2.
A device according to claim 1, wherein the means for maintaining a constant distance comprise distance-determining means for determining the distance of the surfaces of the body from a lens system located between light source and the body; displacement means for displacing the lens system, and control means for controlling the displacement means according to the difference between a set value and the measured value of the distance between the lens system and the surface of the body.
3.
A device according to claim 2, wherein the distance-determining means are in the form of a sensor.
4.
A device according to claim 3, wherein the sensor is selected from the group consisting of optical, inductive and capacitive type sensors.
5.
A device according to claim 2, wherein the lens system is accommodated in a housing which comprises a body sensor which measures the distance from a fixed point on the housing to the surface of the body and a lens sensor which measures the distance from a fixed point on the housing to the lens system, and electronic means for performing an arithmetical operation to calculate from the distance values measured by the sensors the distance between the lens system and the surface of the body, the electronic means also being connected to control the energization of the displacement means for displacing the lens system relative to the housing according to the difference between a preselected set value and the thus measured value for the distance between the lens system and the surface of the body
|
|
Optical Systems 
