Call us now 01452 690101

Trivex Technical Information

Compared to CR39, Trivex has exceptional impact resistance properties, whilst having the lowest specific gravity of any lens (1.1), and also bettering polycarbonate with a 45 V value. It far exceeds polycarbonate in its resistance to chemicals and benzine vapours.


Trivex lenses are the first ultra-lightweight optical material to combine the best attributes of thermoplastics (polycarbonate) and thermosets (CR39). The result is a product that provides high impact resistance while retaining superior optical performance. Perhaps for this reason alone it is the best lens for glazing rimless frames.


Clear Vision 

Especially for reading, computer work and driving vision acuity is important, Trivex lens material provides the optical quality that optimizes corrective prescriptions and so helps to reduce eye strain.



Trivex

Std. Plastic (CR-39TM)

Polycarbonate

High & Ultra-high Index

Optical Quality

Abbe Value


43-45


58


29-32


32-41



Abbe value: The higher the Abbe Value, the more accurately a lens aligns the spectrum of light waves that pass through it. Lens materials with lower Abbe Values are unable to focus these light waves so accurately, resulting in vision defects that appear as distracting fringes of colour around dark type and objects as “chromatic aberration.”


Lightweight Comfort 

Lenses made with Trivex are ultra-light for ultimate comfort; Trivex is one of the lightest lens materials. Unlike other lens materials, Trivex blends the benefits of light weight and thinness, often resembling a high index lens, but weighing even less than polycarbonate. Trivex lenses can be processed to a much thinner centre and edge thickness than other lens materials.


Trivex

Std. Plastic (CR-39TM)

Polycarbonate

High & Ultra-high Index

Thinness

Typical centre thickness


1.2-1.5mm


1.8-2.0mm


1.2-1.5mm


1.5mm


Specific Gravity: The lower the number, the lighter and more comfortable the lens will be. This number represents the relative density of an object to an equal volume of water. Anything with a specific gravity of less than 1.0 will float on water. Although a high-index lens appears to be thin and light, it actually has a higher specific gravity because it is made from a more dense material. On the other hand, a lens made from Trivex material is so light that it almost floats.



Trivex

Std. Plastic (CR-39TM)

Polycarbonate

High & Ultra-high Index

Lightweight

Specific Gravity


1.11g/cm3


1.32g/cm3


1.22g/cm3


1.30-1.47g/cm3



PPG TRIVEX is also known as TRILOGY (Youngers Opt) & PNX (Hoya)







No items found.