Microscopy systems with rectangular illumination particularly adapted for viewing transparent objects
US4200354A · kind A · utility
11Cited by
3References
9Claims
0Family size
Inventor
Key dates
| Filing date | Apr 21, 1978 |
| Grant date | Apr 29, 1980 |
| Priority date | — |
| Expiry date | Apr 21, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A modulation contrast microscope employs a closely wound lamp filament of a rectangular configuration as an illuminating source. The image of the filament is registered on a Fourier plane to which plane a modulator is located which serves to render phase gradients in phase objects visible by functioning to provide light amplitude differences in accordance with modifying the amplitude of the light beam relatively about a given region in both a greater and lesser intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.