aperture angle

aperture angle

[′ap·ə·chər ‚aŋ·gəl]
(optics)
The angle subtended by the radius of the entrance pupil of an optical instrument at the object.
References in periodicals archive ?
There is a long-range sensor that goes out to about 820 feet and at an aperture angle of 18[degrees], so it senses objects in a long, narrow cone.
On the other hand, the company continues to develop its latest innovations such as PURAVIS lead-free step index fibers that are now also available in the version GOF120 that has an aperture angle of 120 degrees.
12 Aperture Angle Optimization for Visibility Problems in Graphics and Computer Vision
The Gouy phase of an ideal nondiffracting beam only depends on the cone aperture angle of its angular spectrum no matter the structure of the transverse profile pattern of such a field, contrary to what happens for diffracting beams, as for example shape-invariant beams [20], where the transverse profile plays an important role in the Gouy phase structure.
To calculate the parabola, a mathematical analysis was performed to find the values that satisfy the design criteria, like: diameter, aperture angle, and concentration ratio.
In such case, the beam aperture angle is not the same for all the beams of the cluster and three angles are needed to characterize the beams' shape.
The microscope combines an in-lens field emission gun with an aperture angle control lens, optimizing large probe currents (up to 200 nA) for operation at the smallest probe diameter.
The JSM-7800F combines an in-lens field emission gun with an aperture angle control lens, optimizing large probe currents (up to 200 nA) for operation at the smallest probe diameter.
Featuring a revolutionary design with sustainability and functionality at its core, eno is characterised by the lever's precise 90 degree aperture angle.
This proves problematic in panorama applications, since remote objects or objects outside the aperture angle cannot be detected.
These 3D ADCIGs are functions of both the aperture angle and the reflection azimuth.
25-milliradian aperture angle, we achieve three-inch resolution at 1,000 feet.