| Huygenian eyepiece | <microscopy> An under corrected (blue rim at periphery of field) ocular designed by Huygens for the telescope and later adopted for achromatic objectives. This ocular consists of two plano-convex lenses separated by a diaphragm, hence it is of the negative type with the focal plane inside the system. Both plane surfaces face the eye, as distinguished from the Ramsden eyepiece. (05 Aug 1998) |
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| huygenian |
named for Christiaan Huygens (or Huyghens), Dutch physicist, 16291695, as huygenian eyepiece.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| huygenian e. |
a negative eyepiece consisting of two planoconvex lenses, the convexities being directed toward the objective.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| huygenian eyepiece |
This simple eyepiece effects a certain amount of correction for chromatic difference of magnification in the achromatic objective.
Ãâó: www.opti-tech.ca/pages/glossary.html
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