Near-infrared microscope

Optics: measuring and testing – Infrared and ultraviolet

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359371, G02B 2106

Patent

active

059662042

ABSTRACT:
A near-intfrared microscope has a light source device for illumination for emitting near-infrared rays, an illuminating optical system for illuminating a specimen with illumination light from the light source device for illumination, and an observing optical system for observing the specimen. The light source device for illumination selectively produces an arbitrary wavelength in a wavelength region ranging from 600 to 900 nm. The illuminating optical system and the observing optical system include a contrast producing unit for yielding a contrast of the specimen. In this way, cells lying at a depth of at least 100 .mu.m below the surface of the specimen can be observed, and even when an ordinary objective lens is used in the near-infrared region, imaging performance is not affected.

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patent: 5502596 (1996-03-01), Suzuki
H. Komatsu, "Foundamentals and Application of Optical Microscopy (3)", Jap. J. Appl. Phys., vol. 60, No. 10(1991), pp. 1030-1034.
Kettenmann et al., "Infrared Videomicroscopy of Living Brain Slices", Practical Electrophysiological Methods, 1992.
Sakmann et al., "Visualization of Nerve Cells Using IR-DIC", Single-Channel Recording Second Edition, pp. 202-206.
Dodt et al., "Visualizing unstained neurons in living brain slices by infrared DIC-videomicroscopy", Sep. 1990, pp. 333-336.

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