Method and apparatus for preparing imaged light

Details Method and apparatus for preparing imaged light Method and apparatus for preparing imaged light

1994-07-20

1995-12-26

Lopez, F. Daniel

Optical: systems and elements

Optical modulator

Light wave temporal modulation

G02B 2600

Patent

active

054792894

ABSTRACT:
An imaging device and method for projecting imaged light according to print data onto an imaging medium includes a light source, an optics system receiving light from the light source, and at least one modulator having a plurality of individually addressable reflective elements. The optics system images or focuses the light source onto the at least one modulator and the at least one modulator selectively modulates a portion of the light onto the imaging medium according to the print data. The optic system includes a condenser lens positioned between the light source and the at least one modulator and an imaging lens be positioned between the at least one modulator and the imaging medium. A numerical aperture of the condenser lens is set to be equal to a numerical aperture of the imaging lens to critically illuminate the modulator. The light source may include a plurality of light emitting elements. Light beams from the plurality of light emitting elements are overlapped on the reflective elements at the full width half max point of the light beams to uniformly illuminate the reflective elements.

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patent: 5072239 (1991-12-01), Mitcham et al.
patent: 5096279 (1992-03-01), Hornbeck et al.
patent: 5159485 (1992-10-01), Nelson
Electronics Engineer's Reference Book, 6th ed, Cornwall, Hartnolls Ltd., 1989, pp. 23/9-23-10, TK7825.E44,1989.

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