Briot ALTA EVOLUTION Blocker

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ALTA EVOLUTION / EVOLUTION GT … User manual

ALTA EVOLUTION / EVOLUTION GT

3-51

3.3.9.1. LENS BLOCKING PROCESS

Before proceeding with manual blocking of the lens, position a block fitted with adhesive on the blocker arm.

Two block types are available:

 Briot block: position the keyway between the two points

 Weco block

Follow the steps below to block a lens:

 Select the marking type (three points, progressive, etc.).

 Select the side to be blocked by pressing directly on the frame in question (right or left eye).

 Place a lens holder, corresponding to the lens to be blocked.

 Place the lens to be blocked, after marking it, on its holder.

 Center the lens to be blocked so that the markings match the target.

 Place a block fitted with adhesive in the head of the blocker (Caution! The use of adhesives which are not

specifically recommended by Briot may result in malfunctions during subsequent edging phases).

 Hold the lens during blocking.

 Rotate the blocker head by 180°.

 Rotate the blocker arm.

 Lower the blocker head on the lens.

 When the blocking operation is complete, remove the blocked lens from its holder.

Briot ALTA EVOLUTION Blocker - Page 66