Barco Graphics, Nv

Mania Barco Nv

Next Scan Technology Bvba

Ronny A De Loor

Marc Vernackt

Mark Ryvkin

Anne-Marie F Empsten

Dov Rosenfeld

The present invention provides a scanning system () comprising a first port for receiving or emitting a stationary beam () of electromagnetic radiation, a second port for emitting or receiving a scanning beam of electromagnetic radiation, the scanning beam scanning in a main scanning direction, a scanning element () for relaying the stationary beam () into the scanning beam or vice versa, an optical system between the scanning element () and the second port, wherein the optical system comprises at least a first mirror () and a second mirror () having a rotationally symmetric curved mirror surface around their optical axis, at least one of the first and the second curved mirror surface having an aspheric shape, and wherein the first and the second mirror () have an off-axis decentered aperture and are offset in position in a direction perpendicular to the main scanning direction.

Flat field telecentric scanner with diffraction limited performance

A method is described for exposing both sides of a light sensitive sheet such as a printed circuit board panel according to imaging data. The method uses a device that has an optical system for scanning the sensitive sheet by one or more beams. The optical system scans both sides with the scan lines on one side mutually positioned with respect to the scan lines on the other side. According to one implementation, the optical system includes two optical scanning units driven by a single source, with a switch alternating the beam from the source to one then the other optical scanning unit.

Method and device for exposing both sides of a sheet

A device is described for exposing both sides of a light sensitive sheet such as a printed circuit board panel according to imaging data. The device comprises an optical system for scanning the sensitive sheet by one or more beams. The optical system scans both sides with the scan lines on one side mutually positioned with respect to the scan lines on the other side. According to one implementation, the optical system includes two optical scanning units driven by a single source, with a switch alternating the beam from the source to one then the other optical scanning unit.

A method and system for exposing a light sensitive material using device for forming a row of spots of light onto the light sensitive material located on a focal plane, device for modulating each of the spots according to imaging data so that at any point of time, the row of spots forms a data pattern according to the imaging data, device for generating relative motion between the imaging mechanism and the light sensitive material on the focal plane, the direction of motion substantially parallel to the direction of the row of spots on the light sensitive material; and data synchronizing device for shifting the imaging data into the modulating device at a rate determined by the speed of relative motion to maintain the image of any data pattern substantially stationary on the light sensitive material.

Method and apparatus for light modulation and exposure at high exposure levels with high resolution

A scanning device comprising a scanning member provided for pathwise scanning a medium along a scanning path by means of a scanning beam, said scanning member and said medium being mutually movable with respect to each other, characterized in that said scanning member comprises a plurality of N scanning modules, each i.sup.th (1.ltoreq.i.ltoreq.N) scanning module being each time provided for scanning its assigned i.sup.th segment of said scanning path and an end point of a j.sup.th (1.ltoreq.j.ltoreq.N-1) segment corresponds with a starting point of a (j+1).sup.th segment, and wherein each i.sup.th scanning module comprises deviation determining means provided for determining on at least one position situated along said i.sup.th segment a cross-scan deviation between a predetermined scanning path and the path scanned by the scanning beam, said deviation determining means being connected with scanning beam steering means provided for determining upon receipt of said cross-scan deviation a first correction signal in such a manner -as to minimize said cross-scan deviation and for steering said scanning beam under control of said correction signal, and wherein said scanning beam steering means of a k.sup.th (1.ltoreq.k.ltoreq.N) scanning module being provided for starting the scanning of its assigned k.sup.th segment on an assigned time t.sub.k within a scanning period .DELTA.T for scanning the scanning path, the scanning beam steering means of each m.sup.th scanning module (k.noteq.m and 1.ltoreq.m.ltoreq.N) being provided for starting the scanning of their assigned m.sup.th segment on time ##EQU1## if m&gt;k and ##EQU2## if m&lt;k, .DELTA.t.sub.u being the time period for scanning the u.sup.th segment.

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Ghent, Belgium

Ronny A De Loor