Scanning type optical microscope

Details Scanning type optical microscope Scanning type optical microscope

1987-06-19

1989-01-24

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356444, G01N 2100

Patent

active

048002690

ABSTRACT:
In order to make it feasible to obtain a differential phase image having a uniform brightness and good quality, a scanning type optical microscope comprises: a laser light source; an objective lens for collecting, onto an object under observation, a light beam emitting from the laser light source; a scanning light deflector disposed between the laser light source and the objective lens; a light detector comprised of a plurality of photoelectric converters receiving a light from the object and being separated into two sections; a signal processing circuit for calculating the difference between the signals coming from the two sections of the light detector to thereby obtain a differential phase signal; and adjusting means for adjusting the differential phase signal with a signal varying with an image height and being synchronous with the scanning of the light beam.

REFERENCES:
patent: 4373817 (1983-02-01), Coates
Coded Apertures and Detectors for Optical Differentiation--Toy Wilson et al, SPIE vol. 232 1980 Intl. Optical Computing Conference (1980) pp. 203-209.

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