Opto Tech HD Progressive Lenses

Short Description:

The OptoTech HD progressive lens design concentrates the unwanted astigmatism into smaller areas of the lens surface, thereby expanding the areas of perfectly clear vision at the expense of higher levels of blur and distortion. Consequently, harder progressive lenses generally exhibit the following characteristics: wider distance zones, narrow near zones, and higher, more rapidly increasing levels of surface astigmatism (closely spaced contours).

Product Detail

Product Tags

Design Characteristics


The Entry and Drive Design

Corridor Length (CL) 9 / 11 / 13 mm
Near Reference Point (NPy) 12 / 14 / 16 mm
Minimum Fitting Height 17 / 19 / 21 mm
Inset 2.5 mm
Decentration up to 10 mm at max. dia. 80 mm
Default Wrap 5°
Default Tilt 7°
Back Vertex 13 mm
Customize Yes
Wrap Support Yes
Atorical Optimization Yes
Frameselection Yes
Max. Diameter 80 mm
Addition 0.50 - 5.00 dpt.
Application Drive;Outdoor


Opto Tech

HD 6

To develop a new progressive lens in a high quality level, extreme complex and powerful optimization programs are necessary.To simplify, you have to imagine that the optimization program looks for a surface which combines two different spheric surfaces (distance and near  vision) as even as possible.It is important, that the areas for distance and near view are developed as comfortable as possible with all required optical properties. Also the transformed areas should be as smooth as possible, that means without big unwanted astigmatism. These punitive easy looking requirements are practically very difficult to solve. A surface has, at a normal size of 80 mm x 80 mm and a point distance of 1 mm, 6400 interpolation points. If now each individual point gets the freedom to move within 1 mm about 1 µm (0.001 mm) for the optimization, with 64001000 you have an incredible high number of possibilities. This complex optimization is based on the ray tracing technology.

What is the difference between HC, HMC and SHC?

       Hard coating     AR coating/Hard multi coating        Super hydrophobic coating
makes the uncoated lens hard and increases the abrasion resistance increases the transmittance of the lens and reduces surface reflections makes the lens waterproof, antistatic, anti slip and oil resistance



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