screen angle


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screen angle

[′skrēn ‚aŋ·gəl]
(electromagnetism)
Vertical angle bounded by a straight line from the radar antenna to the horizon and the horizontal at the antenna assuming a ⁴⁄₃ earth's radius.
(graphic arts)
The angle used for a halftone screen in relation to another screen to avoid an undesirable moiré pattern in a color reproduction process.

screen angle

The angle at which a halftone screen is placed over an image. Generally, 45 degrees produces the best results. In a digital system, the screen angle is simulated by the placement of the dots within the halftone cells. See halftone.
References in periodicals archive ?
The ST352 features a 12-foot by 5-foot two-bearing screen with the same screen box design as the ST348, featuring an adjustable screen angle for improved performance.
I continued to experiment, mixing screen angles with paper textures, exposing under layers of paper, using a range of opacities and introducing fabric with positive films of differing resolutions.
With features such as horizontal and vertical lens shift to allow for square images even when the projector is positioned at unusual screen angles, double stackability, power zoom and focus, and a compact form factor enabling easy setup and moveability, the GT2150 provides unparalleled flexibility.
The images produced through FM screening are free from the rosettes, moires, rainbows and screen angles that are characteristic of conventional printing.
Before that, Williams had to take the three color printers from the old LaserPhoto printer and shoot them on a process camera, turning each according to a chart he had devised to achieve different screen angles that would avoid moire.