ASYMMETRIC BINOCULAR TRACING
The two circles of frame are read as if they have different shapes; the perimeters and the shapes are
preserved.
BOXING DIMENSIONS
The boxing system is a standard method to indicate the dimensions of frame contours (or gauges). This
operation consists in fitting the frame into a rectangle whose dimensions are indicated.
• Boxing center: geometric center of the rectangle
• Boxing axis: horizontal axis of the frame passing through the boxing center
• A-dimension: length of the rectangle
• B-dimension: height of the rectangle
• D-dimension: nominal nose (DBL)
• E-dimension: greatest radius from the boxing center
• Boxing height: calculated from the tangent line at the bottom of the frame.
EXECUTIVE LENS
Type of bifocal lens with two full fields: one which corrects far vision defects and one which corrects near
vision defects. They are available in two models:
• separation line present on the front surface of the lens
• separation line present on the rear surface of the lens
• Example of lenses of this type: Telex lenses
TM
ID
The (ID) identifier of job is composed of alphanumerics in the list of jobs and of numbers in the list of the
collections. It is unique.
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