In many ways, the light microscope is a highly perfected instrument. It produces an image resolved to a fraction of the wavelength of light, with excellent contrast, and with aberrations reduced to a bare minimum. It portrays images in many contrast modes and allows measurements of various optical quantities nondestructively. Still, practitioners of modern microscopy are continually striving to register fainter images, explore finer details, and record subtler contrast. We strive to detect weaker fluorescence, measure lower birefringence, and reveal miniscule absorbances and optical path differences, all with an effort to uncover dynamic physical and chemical details in finer and finer domains of the specimen.
KeywordsVideo Signal Fiducial Mark Optical Path Difference Analog Video Sync Pulse
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