defocus

(redirected from defocusing)
Also found in: Dictionary, Medical.

defocus

[dē′fō·kəs]
(engineering)
To make a beam of x-rays, electrons, light, or other radiation deviate from an accurate focus at the intended viewing or working surface.
References in periodicals archive ?
The diffraction intensity decreases with the increase of tilting angle Ps, caused by defocusing.
The reason of aviation camera defocusing and the theory of autofocusing are analyzed in Section 2.
The defocusing of the single-look SAP by the LLPE and LQPE is examined in Section 3.
Processed by two symmetric defocusing filters (SDF), the target image derives two defocused versions.
Survey articles review recent progress on Strauss conjecture for wave equations on exterior domain, the defocusing cubic nonlinear wave equation in the energy-supercritical regime, and local and global solutions of the Lagrangian averaged Navier-Stokes equation.
Outside of this plane, the horizontal structure of the dipole seemed to generally cause spanwise divergence, or defocusing, of the internal wave beam in co-propagating interactions and spanwise convergence, or focusing, in counter-propagating interactions.
Ordinarily, laser beam welding involves many variables: laser power, welding speed, defocusing distance and type of shielding gas, any of which may have an important effect on heat flow and fluid flow in the weld pool.
I have no intention of delisting or defocusing on the mother brand," he said.
Digital enhance set to fiberscope eliminates the "screen door" effect without defocusing.
where [sigma] = -1 in the focusing case and [sigma] = 1 in defocusing case.
Moreover, the development of the ME sense of futurity when compared with the OE sense of prophecy, is to be viewed as the increase in the level of abstractness via defocusing of the divine conceptual subject.
Designed for factory automation, a locking screw prevents system defocusing, even in areas subject to shock and vibration.