System and method for uniformity of illumination for tungsten li

Details System and method for uniformity of illumination for tungsten li System and method for uniformity of illumination for tungsten li

1992-03-17

1992-10-27

LaRoche, Eugene R.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359668, 359846, 353122, G02B 2600, G02B 1308

Patent

active

051594854

ABSTRACT:
There is disclosed an optic system for illuminating a DMD array in a manner for efficient light transfer to an imaging lens. The DMD is positioned between the light source and the lens aperture. An anamorphic optic path is arranged such that the vertical component of the light is compressed to match the physical shape of the DMD array. In this manner the horizontal light component is focused directly on the aperture while the vertical light component is focused optically ahead of the aperture. Together the two light components entirely fill the lens aperture while providing more light intensity at the DMD.

REFERENCES:
patent: 3041935 (1962-07-01), Jacobsen
patent: 4596992 (1986-06-01), Hornbeck
patent: 4678321 (1987-07-01), Inokuchi
patent: 4744073 (1988-05-01), Sugiki
patent: 4859012 (1989-08-01), Cohn

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