Differential interference microscope

Details Differential interference microscope Differential interference microscope

1999-02-01

2000-03-07

Henry, Jon

Optical: systems and elements

Compound lens system

Microscope

359498, 359500, 359578, 356351, 356353, G02B 2114, G02B 2728, G02B 530, G01B 902

Patent

active

060348143

ABSTRACT:
A reflected light differential interference microscope (100) having a birefringent optical member (B). Each birefringent optical member has a ray-separating plane (Q.sub.B) that intersects the optical axis (A2') at an intersection point (P.sub.B) at a first angle (.beta.) with respect to a reference plane (P.sub.2) oriented perpendicular to the optical axis. The microscope further includes an objective lens (113) having a focal point (F.sub.113) along the optical axis. The birefringent optical member is designed so as to be movable along a line oriented at a second angle (.gamma.) with respect to the reference plane in a manner that maintains the intersection point and the focal point substantially coincident. This allows for the color of the image (115) to be varied without degrading the image quality.

REFERENCES:
patent: 3868168 (1975-02-01), De Veer
patent: 4964707 (1990-10-01), Hayashi

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