Multi-beam laser diode beam separation control

Details Multi-beam laser diode beam separation control Multi-beam laser diode beam separation control

G - Physics

02

B

G02B 26/10 (2006.01) G02B 26/08 (2006.01) G02B 26/12 (2006.01) G06K 9/20 (2006.01) H04N 1/191 (2006.01)

Patent

CA 2093571

ABSTRACT A multi-beam raster output scanner is disclosed which utilizes a deflection wedge for modifying the beam separation independent of the spot size to generatea desired relationship between spot separation and spot size. The beam separation can be modified by moving the deflection wedge back and forth. Depending on the distance between the deflection wedge and a spot size control aperture, the beamseparation varies. In this invention, as in the prior art, the spot size can be modified by changing the size of the control aperture, but to avoid the loss of intensity, the size of the control aperture will be changed only for fine adjustments to achieve the proper spot size.

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