There are few guarantees in the world of riflescopes, but one guarantee is that there is no such thing as a cheap, lightweight, extremely durable, short, high-magnification scope with a large objective lens
. Only when you're willing to spend more than $1,500 and carry a 20-ounce-plus scope does the above combination become possible.
The Meopta TGA features a 75mm objective lens
and the fully multi-coated, premium-grade optics ensures superior light transmission and edge-to-edge clarity.
The new MRO Patrol is the same basic unit but comes with a honeycomb kill-flash screwed onto the objective lens
to eliminate glare.
The VarioSkop objective lens
system consists of two lens groups with five lenses used to change the working distance.
In a Galilean system, the eyepiece is a concave lens and the objective lens
The objective lenses used in the DHM configuration for this study are summarized in Table 1, including the pixel size and wavelength-dependent depth of field for each objective lens
. The DHM is equipped with objective lenses for use in air as well as water immersion lenses.
With technological developments, the objective lens
market is projected to grow at a fast pace throughout the forecast period.
This is why Europeans (who can often legally hunt in much dimmer light than most Americans) came up with a formula called "twilight factor," combining the factors of objective lens
diameter and magnification.
Without the cap, the lens gets scratched, the objective lens
housing is damaged and the image intensifier tube burns out.
There is a specially designed Apochromat objective lens
with high numerical aperture (0.11) and low distortion that provides crisp, clear images.
However, no detailed studies were available on the tight focusing effect of partially coherent beams on the high NA focusing objective lens
. Recently, Guo et al.
CMOS detectors offer greater speed and sensitivity than point detectors on other microscopes; a water-immersion objective lens
eliminates coverslip-mounted samples, which further protects against sample photo damage.