TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A wheel that carries a number of apertures through which a beam of light is passed in a light spot projector ... and which can be rotated under program control to select the proper aperture for drawing.  1, fiche 1, Anglais, - aperture%20disk

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Disque présentant différents diaphragmes pour le passage du faisceau lumineux d'une tête photographique, et dont la rotation, commandée par programme, permet de sélectionner le diaphragme approprié.  1, fiche 1, Français, - disque%20d%27exposition

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

A thin, flat, circular plate of any material with an opening or hole (orifice) of pre-determined diameter to restrict the area viewed through it.  1, fiche 2, Anglais, - aperture%20disc

Fiche 2,  Justifications,  Français

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

A procedure used to reduce the field of view of a [flame] detector by means of an opaque plate or card with a selected sized opening. This is frequently required to reduce refractory interference to acceptable levels.  2, fiche 3, Anglais, - orificing

Record number: 3, Textual support number: 1 CONT

The S512 with its PbS photo detector has a linear response from low to medium brightness flames, that is, no distortion of flame signal occurs with regard to any amplifier saturation or AGC action(compression). However, saturation will occur with the PbS element on bright flame. This condition can easily be rectified by using orificing(placing disk with small aperture in front of lens to reduce the amount of light or radiation).  3, fiche 3, Anglais, - orificing

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 DEF

Action d'occulter (une source lumineuse); [...]  1, fiche 3, Français, - occultation

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 DEF

The point at which an increased input signal no longer increases the amplifier output.  3, fiche 4, Anglais, - amplifier%20saturation

Record number: 4, Textual support number: 1 CONT

The S512 with its PbS [lead sulfide] photo detector has a linear response from low to medium brightness flames, that is, no distortion of flame signal occurs with regard to any amplifier saturation or AGC action(compression), However, saturation will occur with the PbS element on bright flame. This condition can easily be rectified by using orificing(placing disk with small aperture in front of lens to reduce the amount of light or radiation).  4, fiche 4, Anglais, - amplifier%20saturation

Record number: 4, Textual support number: 1 OBS

flame signal amplifier: the part of the flame detection system which increases the flame signal to a magnitude sufficient to pull in the flame relay in the flame safeguard control.  3, fiche 4, Anglais, - amplifier%20saturation

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 CONT

Le convertisseur à résistance négative, étudié en préliminaire, est utilisé pour compenser les pertes d'un circuit LC, en particulier celles de l'inductance. On enregistre alors la «naissance» de l'oscillation qui permet de mettre en évidence la partie à croissance exponentielle et la stabilisation de l'amplitude due à la saturation de l'amplificateur.  2, fiche 4, Français, - saturation%20de%20l%27amplificateur

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 DEF

In optical character recognition, a device that projects an input character into a rotating disk, on the periphery P which is a series of small, uniformly spaced apertures; as the disk rotates, a photocell collects the light passing through the aperture.  2, fiche 5, Anglais, - mechanical%20scanner

Fiche 5,  Justifications,  Français

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 DEF

The modification of the amplitude transmittance of the aperture of an optical system so as to reduce or suppress the energy of the diffraction rings relative to that of the central Airy disk.  2, fiche 6, Anglais, - apodization

Record number: 6, Textual support number: 1 CONT

If the transmission [of light] is not constant across the aperture, the diffraction pattern will be modified. This is called apodization.  3, fiche 6, Anglais, - apodization

Fiche 6,  Justifications,  Français

Record number: 6, Textual support number: 1 CONT

Recherches sur l'apodisation au plan focal idéal. Dans la recherche de l'apodisation on se propose [comme but] l'abaissement des anneaux secondaires, ou pieds, de la figure de diffraction focale.  1, fiche 6, Français, - apodisation

Fiche 6,  Justifications,  Espagnol

Fiche 7,  Justifications,  Anglais

Record number: 7, Textual support number: 1 CONT

A highlight mask is made, using the highlight mask aperture in the mask filter disk. The purpose of this mask is to keep the spectral highlights and whites clear.  1, fiche 7, Anglais, - highlight%20mask

Fiche 7,  Justifications,  Français

Record number: 7, Textual support number: 1 CONT

La compression du contraste à exécuter ne doit pas affecter les régions claires. Avant de faire les masques de couleurs, on protège ces régions par une sorte d'écran, le «masque de hautes lumières».  1, fiche 7, Français, - masque%20de%20hautes%20lumi%C3%A8res

Fiche 7,  Justifications,  Espagnol