Optical arrangement for high power microobjective

Details Optical arrangement for high power microobjective Optical arrangement for high power microobjective

2005-04-19

2005-04-19

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Microscope objective

C359S657000

Reexamination Certificate

active

06882481

ABSTRACT:
An arrangement of lenses for a 100×, oil immersion microscope objective is presented. The new configuration gives a flat field of view with diffraction limited performance over all the field. The new optical arrangement broadly includes eight lens elements including a positive power seventh lens element with the radius of curvature of the surface proximate to the object plane less than or approximately equal to the radius of curvature of the surface distal to the object plane, with the optical arrangement arrayed such that the distance from the first lens element to the second lens element is sufficient to reduce a ray height of a light ray and, in addition, arrayed such that the distance from the fifth lens element to the sixth lens element is sufficient to increase the ray height of the light ray entering the sixth lens element from the ray height of the light ray entering the first lens element.

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Sharma, K.D., “High power microobjective: a new design.” Applied Optics, vol. 24, No. 16, Aug. 15, 1985, pp. 2577-2580.

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