Microscope objective

Details Microscope objective Microscope objective

2011-03-15

2011-03-15

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Microscope objective

C359S661000, C359S368000

Reexamination Certificate

active

07907348

ABSTRACT:
The invention relates to a microscope objective with preferably anti-symmetric lenses or lens groups with an optical magnification of −100 and a visual field factor of 20.According to the invention the microscope objective consists of 9 lenses with 3 cemented elements, starting from the object side (left), a lens which is almost a hemisphere L1with positive refractive power, a meniscus lens L2with positive refractive power, a two-part cemented element G1with positive refractive power, another two-art cemented element G2with positive refractive power, a two-part cemented element G3with negative refractive power, and finally a meniscus lens L9with negative refractive power.By using cemented elements and lens pairings of the same construction, production costs can be reduced compared with methods of the prior art while image contrast is improved.

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