JOB
All the actions to be carried out on the tracer, centerer-blocker and edger in order to produce a pair of
glasses. It is possible to memorize it in the shape management screen under an identifier (ID).
MID-DISTANCE LENS
Type of lens intended for near vision but with a greater depth of field (e.g. Interview lenses
TM
).
OPTYL
High flexibility plastic material used for certain frames.
PROGRESSIVE LENS
Type of lens whose power varies progressively from far vision on the upper part of the lens to near vision on
the lower part, without any optical break or unsightly line.
RECUT LENS TRIPOD
Specific tripod for centering a recut lens or a small lens.
REFRACTIVE INDEX
Characterizes the refractive power of a transparent optical material.
The indices vary according to the materials used for the lenses:
• Plastic lens: 1.5
• Polycarbonate lens: 1.59
• Medium or High Index lens: > 1.5
• Trivex™ lens: 1.5 to 1.6
• Glass lens: 1.5 to 1.9
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