| 摘要 |
A novel illuminator for a field microscope, which takes the place of the condenser and the light source and collimating optics in a traditional microscope, is described. The illuminator is described in several embodiments which cover bright-field transmitted light, bright-field reflected light, dark-field transmitted light and dark-field reflected light as well as uni-directional oblique and slit-ultra illumination techniques. The light sources are modular so that they can be interchanged on the microscope, and they feature ultra-low power and current consumption, integral dimming control, battery power and light weight. Optically the illuminators offer extremely flat field illumination along wit h excellent colour correction or selectable narrow wavelengths. The illuminators are characterized by high optical efficiency and small size.
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