aperture plate

aperture plate

[′ap·ə‚chər ‚plāt]
(electronics)
A small part of a piece of perforated ferromagnetic material that forms a magnetic cell.
References in periodicals archive ?
With a design based on the Chevalier lens made for Louis Daguerre's camera, the Lomography Art Achromat 64mm f/2.9 lens integrates the Waterhouse Aperture Plate system that lends the ability for a wide variety of bokeh, and the lens itself can focus razor sharp, or silky soft, for depicting pictorialism in a style that is reminiscent of Edward Steichen's photographic works.
A further facilitation for work is the integrated tools for error analysis and the presentation of device's status as for example temperature (internal-, external-, detector optics), status of laser and detector, noise, background light and the display of pollution degree concerning aperture plate. The data output of CHM Viewer is both available as raw data and as a rectified version.
Like the semitransparent slotted aperture plate, the MESFET grid oscillator circuit is printed on a copper-clad Teflon substrate.
Conforming to a symmetrical, cylinder shape, the Neutristor was developed from a fiat cross-section of the simplest diode-based neutron generator geometry, which includes a source, an aperture plate, an accelerating gap, and a target.
The full thickness of the aperture plate and associated fixtures is large enough (11) to mostly stop the incident photons, so that the penetration of the primary photons (12) through the inner cylindrical surface of the aperture is of primary concern.
(11) The 4 mm W-alloy aperture plate is surrounded by 6 mm to 9 mm of brass, backed by 3.2 mm of Pb, which ensures that the penetration of photons outside the aperture is negligible except for the very-low-intensity high-energy (>240 keV) gamma rays emitted in [.sup.103]Pd decay.
At its core, the design team juxtaposed transverse aperture plates and a nominally 5 in.
Inactive portions of the linear bar grille are blanked off at the plane of the aperture plates.
A self-adjusting, dual zoom lens reportedly eliminates configuration errors between aperture plates and lens position.
The Lomography Daguerreotype Achromat will be hand-crafted in limited numbers, and Lomography is promising further additional accessories like special aperture plates and prints to backers, if it receives further funding.
The array of aperture plates compatible with the Daguerreotype Achromat