Carl Zeiss AMPLIVAL
is a research microscope from the MIKROVAL series designed primarily for work in transmitted light. Its special characteristics are the detachable condenser revolver with pancratic illumination system, the stable carrier, the control mechanism and above all the adaptability to any task.
The AMPLIVAL allows the use of illumination methods for bright field, dark field, phase contrast and qualitative polarization observations. Using the appropriate accessories and parts on it, fluorescence and Nomarski interference could also be achieved.
The optical equipment of the AMPLIVAL microscope can be assembled from planachromats, apochromats or planapochromats with an optical distance of 45 mm. The magnification range of this particular microscope is 25.2 to 3200× (basic equipment 32 to 1600×).
Apochromatic objectives achieve the highest image quality in which chromatic aberration is corrected for yellow, green, blue and red. To be functional, they need to be combined with compensating eyepieces, which eliminate the chromatic difference (different magnification for blue and red light due to different wavelengths). When combined with periplanatic eyepieces, the sharpness of the centre and edges of the field of view is also compensated.
The pancratic condenser is an essential part of the illumination system for precise adjustment of the Köhler illumination when observing in the bright field. It is a sophisticated design consisting of an aplanatic zoom condenser with three turret heads - a variable focal length system. Thanks to this mechanism, the required light flux can be adjusted to match the illumination to the appropriate aperture of lenses ranging from 0.16 to 1.40NA. Thanks to the top turret and additional lenses, the illumination can also be adjusted for lenses with apertures below 0.1NA.
At the same time, the condenser can be replaced or modified and thus switch from one lighting method to another, for example from bright field to phase contrast, where it is enough to replace the bright field aperture with a phase ring aperture and put the appropriate phase lenses on the carrier. There is also a cardioid dark-field condenser on the pancratic condenser for lenses with apertures between 0.6 and 1.0.
The interchangeable dissecting condenser features a large cross-sectional width of 11 mm and the ability to quickly switch from bright-field to dark-field illumination with lenses with apertures smaller than 0.6. It is therefore a suitable complement to the oil cardoid condenser, which is designed for high magnification.
Micrometer eyepiece for precise measurement of observed objects. It is characterized by the possibility of optical centering for more precise centering of the measuring cross with the observed slide.
