Optical microscope which has optical modulation elements

Details Optical microscope which has optical modulation elements Optical microscope which has optical modulation elements

1999-04-28

2000-10-10

Spyrou, Cassandra

Optical: systems and elements

Compound lens system

Microscope

359381, 359370, 359371, 359385, 359386, 359821, G02B 2100

Patent

active

061307769

ABSTRACT:
For observing transparent phase objects and the like, an optical microscope is provided with an aperture element 13 and an optical modulation element 14 that creates an image having the detecting sensitivity of the phase contrast imaging technique while simultaneously realizing an image having the three-dimensional sense provided by the modulation contrast imaging technique. In the present invention, the aperture is shaped as an angular segment of a circular ring that is centered on the optical axis and the corresponding optical modulation element includes either a light attenuating phase plate in the shape of a circular ring, or a light attenuating region in the shape of a circular ring with all other regions of the optical modulation element adding a phase retardation to the light passing therethrough.

REFERENCES:
patent: 2660923 (1953-12-01), Benford
patent: 4407569 (1983-10-01), Piller et al.

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