Measuring objective

Details Measuring objective Measuring objective

1992-03-23

1994-02-22

Sugarman, Scott J.

Optical: systems and elements

Lens

Anamorphic

359709, 359837, G02B 1310, G02B 1318, G02B 504

Patent

active

052893162

ABSTRACT:
The invention is directed to a measuring objective having a large free operating space and having very small imaging errors with respect to coma, astigmatism and distortion. The main rays are, at least at one objective side, inclined to each other in one directional component and are parallel to each other in the directional component perpendicular thereto.

REFERENCES:
patent: 3637308 (1972-01-01), Van Raalte et al.
patent: 4637691 (1987-01-01), Uehara et al.
patent: 4867545 (1989-09-01), Wakimoto et al.
patent: 5113244 (1992-05-01), Curran

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