TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

It is customary to process optical elements in multiples by fastening or blocking a suitable number on a common support.  1, record 1, English, - block

Record number: 1, Textual support number: 1 OBS

Lens surfaces are ground on an iron tool, either flat or suitably curved, using progressively finer grades of wet emery or carborundum powder as abrasives. A number of fine-ground lens blanks are then mounted with pitch on a block ... so that they can be polished together. The polishing tool is covered with a thin layer of pitch, wax, or even coarse cloth. Wet rouge or certain other mineral oxides are used as polishing materials.  2, record 1, English, - block

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

(Polir une lentille) à l'aide d'une pâte abrasive.  2, record 1, French, - blanter

Record number: 1, Textual support number: 1 CONT

Pour fabriquer une lentille ou un objectif, on passe par différentes phases : d'abord l"ébauche" qui consiste à donner sa forme à la pièce au dixième de millimètre près à l'aide d'un "tour à ébaucher"; puis on "blante" la pièce, posant sur toute sa surface un "ciment" de la consistance de la pâte à modeler.  3, record 1, French, - blanter

Record 1,  Textual support,  Spanish