TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

FOCUSING TUBE [8 records]

Record 1 2011-11-10

English

Subject field(s)
  • Scientific Research Equipment
  • Medical Instruments and Devices

French

Domaine(s)
  • Matériel et équipement (Recherche scientifique)
  • Instruments et appareillages médicaux

Spanish

Save record 1

Record 2 2006-03-02

English

Subject field(s)
  • Scientific Instruments
  • Optical Instruments
CONT

The stand of the conventional compound microscope serves to hold the optical parts in alignment and to support the object. A sturdy base carries the rest of the instrument on an inclination joint. The body tube, with objectives on a revolving nosepiece at its lower end and either monocular or binocular eyepiece provision at its upper end, works on a rack-and-pinion coarse focusing adjustment which articulates it with the arm.

French

Domaine(s)
  • Instruments scientifiques
  • Instruments d'optique
DEF

Pièce tournante des microscopes optiques, permettant de placer successivement dans l'axe optique des objectifs de grossissements différents.

CONT

La partie mécanique d'un microscope (statif et organes accessoires) doit constituer [...] un ensemble très solide [...] Elle comporte, sous sa forme «ancienne», un tube métallique, généralement vertical. Les objectifs sont fixés à la partie inférieure, les oculaires se posent à la partie supérieure. La substitution d'un objectif à un autre s'obtient par l'emploi d'une tourelle à revolver.

OBS

révolver : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2006).

Key term(s)
  • tourelle porte-objectif
  • tourelle révolver
  • tourelle à révolver
  • révolver

Spanish

Save record 2

Record 3 2004-10-04

English

Subject field(s)
  • Scientific Instruments
  • Thermography
DEF

A camera which scans the subject horizontally and vertically by rotating or oscillating mirrors, focusing the collected radiation via a parabolic mirror onto an image intensifier tube which convert temperature variations into either brightness of a phosphor screen display or a cathode ray oscilloscope monitor.

OBS

[Thermal scanning cameras are used] for recording heat distribution in furnaces, machines or over the surface of skin in medical diagnosis.

Key term(s)
  • thermal scan camera

French

Domaine(s)
  • Instruments scientifiques
  • Thermographie

Spanish

Save record 3

Record 4 2003-12-16

English

Subject field(s)
  • Audiovisual Techniques and Equipment
  • Photography
DEF

A tube which can be fitted between the lens and the camera to obtain the extra separation between lens and film required for close-up photography [while maintaining automatic focusing].

OBS

Usually supplied in sets of three tubes.

French

Domaine(s)
  • Audiovisuel (techniques et équipement)
  • Photographie
DEF

Bague, généralement en jeu de trois, que l'on intercale entre le boîtier et l'objectif d'un appareil-photo afin de permettre la photographie rapprochée tout en conservant la mise au point automatique.

Spanish

Save record 4

Record 5 1985-03-08

English

Subject field(s)
  • Television (Radioelectricity)
DEF

A method of electrostatically focusing a television picture tube(in which) the focusing anode is internally connected through a resistor to the cathode and thus requires no external focusing voltage.

French

Domaine(s)
  • Télévision (Radioélectricité)

Spanish

Save record 5

Record 6 1976-06-19

English

Subject field(s)
  • Aeroindustry

French

Domaine(s)
  • Constructions aéronautiques

Spanish

Save record 6

Record 7 1976-06-19

English

Subject field(s)
  • Scientific Instruments
  • Optical Instruments

French

Domaine(s)
  • Instruments scientifiques
  • Instruments d'optique

Spanish

Save record 7

Record 8 1976-06-19

English

Subject field(s)
  • Aeroindustry
CONT

A high brightness cathode ray tube with its associated deflection and focusing components.

French

Domaine(s)
  • Constructions aéronautiques
CONT

Un tube à rayons cathodiques à forte brillance et les dispositifs de déviation et de focalisation qui lui sont associés.

Spanish

Save record 8

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Features

Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: