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HARD RESIN
| LAYOUT
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• Special alignment holes have been provided for identification of the 0-180 axis.
• These round holes take the place of the notches or ink lines present on our NuPolar® products.
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| SURFACING / FINING / POLISHING
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• Transitions Drivewear is manufactured from a unique resin formulated to promote the activity level of the visible photochromic dyes. It is recommended to process these lenses like standard hard resin/ CR-39 materials. The stock removal rate will be similar to standard hard resin products.
• The target for finished lens minimum thickness should be 2.2mm.
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| EDGING / GLAZING
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• Standard hard resin edging techniques should be utilized on Transitions Drivewear.
• Use care to insure that the lens is edged to the proper size for each frame; over-size lenses may chip if forced into the frame.
• A slight front side safety bevel is also recommended.
• Do not over-tighten into frame. This could cause stress or chipping in the lens.
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| GROOVING
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• The polarized film is positioned about 0.7 mm from the front surface. Special care should be taken not to locate the groove in this area; place the groove toward the back surface of the lens.
• Plano and low power product should be processed to a minimum 2.5 mm edge thickness.
• Avoid over-tightening the liner string.
• Do not over-size the lens.
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| TINTING
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• Tinting is not recommended as the product darkens considerably outside.
Additional tint will reduce outdoor transmission to possibly dangerous levels.
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| AR COATING
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• Transitions Drivewear is compatible with most anti-reflective coatings.
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| MIRROR COATINGS
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• A flash mirror coating is a nice option for patients who prefer a mirror look. However, a full mirror coating is not recommended, because it may adversely affect the visible light activation behind the windshield.
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POLYCARBONATE
| LAYOUT
|
• Special ink markings have been provided for identification of the 0-180 axis.
• These ink lines are similar to markings present on our NuPolar® products.
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| SURFACING / FINING / POLISHING
|
• It is recommended to process Transitions Drivewear® polycarbonate like our NuPolar® polycarbonate material. The stock removal rate will be similar to standard polycarbonate products.
• The target for finished lens minimum thickness should be 1.7mm.
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| EDGING / GLAZING
|
• Standard polycarbonate edging techniques should be utilized on Transitions Drivewear.
• Ensure proper steps are taken so as not to flex the lens during edging and de-blocking.
• Use edging blocks that best match the base curve of the convex surface.
• If possible use a medium speed or fragile cycle during the edging process which will reduce the edger head pressure and feed rate.
• Use care to insure that the lens is edged to the proper size for each frame; over- size lenses may cause unwanted stress.
|
| TINTING
|
• Tinting is not recommended as the product darkens considerably outside.
• Additional tint will reduce outdoor transmission to possibly dangerous levels.
|
| AR COATING
|
|
• Transitions Drivewear is compatible with most anti-reflective coatings.
|
| MIRROR COATINGS
|
|
• A flash mirror coating is a nice option for patients who prefer a mirror look. However, a full mirror coating is not recommended, because it may adversely affect the visible light activation behind the windshield.
|
|
