Image-wise exposure apparatus

Details Image-wise exposure apparatus Image-wise exposure apparatus

1997-05-30

1999-06-15

Metjahic, Safet

Optical: systems and elements

Deflection using a moving element

By moving a reflective element

359850, 355 67, G02B 2600

Patent

active

059127570

ABSTRACT:
An image-wise exposure apparatus includes a light source for emitting recording light to which a photosensitive material is exposed and a mirror array device. The mirror array device includes a plurality of small mirrors which are two-dimensionally arrayed on a substrate surface and are movable between ON-positions where each of the small mirrors reflects the recording light to impinge upon the photosensitive material and OFF-positions where each of the small mirrors reflects the recording light not to impinge upon the photosensitive material and a drive mechanism which sets the respective small mirrors selectively in the ON-positions or in the OFF positions independently of each other. A control circuit controls the drive mechanism according to an image signal, and an image forming lens causes light reflected from the mirror array device to form an image on the photosensitive material. Each of the small mirrors is inclined by an angle .theta. with respect to the substrate surface in the ON-position and by an angle -.theta. with respect to the substrate surface in the OFF-position. The image forming lens forms a shifted optical system in which the optical axis of the image forming lens is off a line which is perpendicular to the substrate surface and passes through the center of the mirror array device.

REFERENCES:
patent: 5471584 (1995-11-01), Blaxtan et al.
patent: 5633755 (1997-05-01), Manabe et al.
patent: 5828485 (1998-10-01), Hewlett
"O plus E", Oct. 1994; pp. 90-94.

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