Pillischer achromatic microscope, approximately 1870
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- Containers:
- Artifact-box 297, Item htrent0006, Artifact-box 212, Item htrent0006
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Compound binocular, signed: M. Pillischer, London, No. 1441. This brass microscope has four high-quality objective lenses and two sets of eyepieces housed in the original wooden case with brass handle.
A great advance in optics was achieved in the mid 19th century with the development of achromatic lenses. These employed a combination of lens elements, constructed from two or more different types of glass, to correct the spherical and chromatic aberations that had limited the image quality and resolution of lenses for the previous two hundred years. The optical binocular vision is different from that in modern microscopes. It reduces resolution slightly but gives a stereoscopic image.
- Acquisition information:
- Received from: Dr. Josiah Charles Trent
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