Imaging system and method employing off-axis illumination of...

Optical: systems and elements – Lens – With viewed object or viewed field illumination

Reexamination Certificate

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Details

Other Related Categories

C359S629000, C359S625000, C359S267000

Type

Reexamination Certificate

Status

active

Patent number

07012766

Description

ABSTRACT:
An imaging system includes a first off-axis illumination source for providing a first illumination field at a surface of an illumination modulator such that when the modulator is in a first non-activated mode a zero-order reflected illumination field is directed toward a first illumination blocking device, and when the modulator is in a second activated mode one first order reflected illumination field is directed toward an imaging surface while another first order reflected illumination field is directed toward a second illumination blocking device.

REFERENCES:
patent: 6433934 (2002-08-01), Reznichenko et al.

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