Multi-beam laser diode beam separation control

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

1992-08-21

1993-12-21

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372 23, H01S 308

Patent

active

052727157

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 generate a 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 beam separation 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.

REFERENCES:
patent: 4933949 (1990-06-01), Johnson

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