Multi-size spot beam imaging system and method

Details Multi-size spot beam imaging system and method Multi-size spot beam imaging system and method

1997-05-06

1999-07-13

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

359823, G02B 2710, G02B 702

Patent

active

059234733

ABSTRACT:
A system for forming optical beam spots of different sizes on an imaging surface, includes an emitter configured to emit an optical beam along a path. The optical beam is focused at a first focus point and impinges upon the imaging surface downstream of the first focus point. A lens, having a single fixed magnification other than one, is located between the first focus point and the imaging surface so as to be in the optical path of the optical beam. The lens is moveable between a first position located a first distance from the first focus point and a second distance from a second focus point of the optical beam which is downstream of the lens and a second position located the second distance from the first focus point and the first distance from the second focus point. With the lens at the first position the optical beam forms a beam spot of a first size on the imaging surface and with the lens at the second position the optical beam forms a beam spot of a second size, which is different than the first beam size, on the imaging surface.

REFERENCES:
patent: 4097881 (1978-06-01), Katagiri
patent: 5745296 (1998-04-01), Nakamura et al.

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