JOB
All of the actions to be carried out together on the tracer and the edger to manufacture a pair of glasses. It
is recorded in the shape management screen under a specific identifier.
LENTICULAR LENS
Type of lens equipped with a small curved optical zone on front or back surface and whose edge is gradually
flattened. The correction is in the central part.
MID-DISTANCE LENS
Type of lens intended for near vision but with a greater depth of field (e.g. Interview lenses
TM
).
PROGRESSIVE LENS
Type of lens whose power varies gradually between the far vision for the upper part of the lens and the near
vision for the lower part, without optical rupture or unaesthetic line.
REFRACTIVE INDEX
Characterizes the refractive power of a transparent optical material.
The indexes 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
• Tribrid™ lens: 1.6
• Glass lens: 1.5 to 1.9
SINGLE VISION LENS
Type of single vision lens correcting amétropies. The power of the lens is the same over all its surface.
SYMMETRIC BINOCULAR TRACING
The shape of the right circle of frame is applied symmetrically to the left circle; the traced perimeters are
preserved.
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