Semiconductor device lead inspection system

Television – Special applications – Manufacturing

Patent

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348126, H04N 718

Patent

active

054144582

ABSTRACT:
An inspection system utilizes an image doubler design that includes a plurality of mirrors that effectively folds the object distance by reflecting the image along a folded path. Strobed illumination is used in conjunction with a shutterless camera. Increased image resolution results from an optional anamorphic lens with vertical magnification. The lens assembly includes concentric toroidal lens that are produced from a single piece of machineable optical material.

REFERENCES:
patent: 3932702 (1976-01-01), Shelley et al.
patent: 4272684 (1981-06-01), Seachman
patent: 4305658 (1981-12-01), Yoshida
patent: 4509081 (1985-04-01), Peyton et al.

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