The weight gain for optical quality comes with Nightforce's use of an additional lens in the
objective lens group.
Light enters the telescope through the
objective lens (entrance pupil).
3 a) or use a glass window with an
objective lens in air (Fig.
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When a completely coherent radially polarized vortex beam is focused through a high NA
objective lens, the total electric field in the focal region can be expressed as [25-28]
This, combined with Nikon's newly developed
objective lens, the SHR Plan Apo series, offers a superior resolution never before seen on a stereomicroscope.
As well as the 10x magnification, they also have 25mm
objective lens and a wide field of view.
But where does this leave the shooter who wants a scope with a larger
objective lens, the turret between the rings while still maintaining the use of open sights?
The first is the power (or magnification); the second is the diameter of the large lens (or
objective lens).
Later research into this effect revealed a surprising result, that is, the high reduction of the chromatic aberration of a single plano-convex
objective lens by placing an achromatic doublet lens at some position along the focal length, and inside the prime focus itself.