Ernst Leitz (Firm) · Wetzlar ; New York : Ernst Leitz · leaf 10
manner: The achromatic objectives have a comparatively simple formula,but they fully satisfy all the requirements of a good objective,beside being handy and rigidly mounted. 1. They are chromatically corrected for the brightest part of thespectrum within the lines D and F. 2. The rays are… … orange-yellow yellow greenIntensity curve of the rays of the spectrum. The above Fraunhofer curve of the light-rays of the solarspectrum shows that the colour correction of the achromatic lenseswithin the lines D and F embraces the brightest part of the spectrum. ERNST LEITZ, Optical Works,…
Microscopy · Optometry · Equipment and supplies
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