The Criterion MAX features an ergonomic design with an oversized chemical-resistant slurry bowl.

OPTEK’s Criterion MAX simplifies operation, reduces operator decision-making, and increases quality.

It’s been 10 years since OPTEK introduced the first computerized finer/polisher, and according to the company, OPTEK has now taken it to the next level with Criterion MAX.

Criterion MAX might be called an intelligent finer/polisher because it provides two methods of control, an auto mode and a manual mode. The auto mode allows the job to be downloaded from the user’s Rx processing software. This means the data the user entered for the job during data input is automatically retrieved by Criterion MAX and is used for the fining or polishing the lenses require. Manual mode allows the user to select from four lens materials in the onboard database. These selections guide the unit’s behavior during surfacing.

Most labs will find it convenient to use auto mode most of the time. In auto mode, the user simply enters a job number or scans a barcode. The intelligent software in Criterion MAX downloads job details from the Rx processing software and automatically sets the optimal cycle time, pressure, and spindle speed. Since each job is run differently, the unit adjusts accordingly. All an operator has to do is load the laps and vacuum chuck the lens (with its block) into place. As the job runs, this third-generation finer/polisher tightly controls lens axis through a patented circular motion.

With its temperature controls for slurry mix, Criterion MAX warns the operator if the slurry temperature is outside the optimal range for the lens material being processed. It also has a vacuum lens loading system that reduces breakage from block and pin misalignment. The slurry pre-flood system speeds and simplifies operation, and auto speed ramping reduces pad separation from the lap during startup. This is especially helpful with gripper type pads.


PLCS The programmable logic controllers (PLCs) on the Criterion MAX has replaced the traditional knobs and switches found on previous equipment. PLCs are essentially microprocessors used to control machinery. They are well suited for lens surfacing applications because PLCs are built to ward off dust, dirt, moisture, heat, cold, vibration, electrical noise, impact, and other issues that can affect computerized modules. Connected to sensors and actuators in the Criterion MAX unit, the PLCs help provide the automated and manual functions.

As if all its processing features were not enough, Criterion MAX comes with a built-in maintenance advisor that automatically records running hours and prompts the operator when it is time to perform the unit’s scheduled maintenance. Free phone support is also available.

The unit’s external appearance is similar to a traditional finer/pol-isher, with the notable exception of a sleek programmable logic controller module replacing the knobs and buttons of older systems. Its enclosure is made of tough, heavy-duty 16 gauge sheet metal (no injected molded plastic). Timed gear belt drive minimizes vibration and prevents motion irregularities. Along with extended life bearings that have a special reservoir for adding additional lubricants, the machine also has a double baffle system with a tertiary internal drip shield to protect internal components and an ergo-nomic design with an oversized chemical-resistant slurry bowl.

Through its advanced mechanical and software technology, Criterion MAX provides exceptional levels of accuracy, speed, dependability, and operational simplicity for all your surfacing needs.

Kat Leek-Tedeschi is a licensed optician at Avante Optics, an independent wholesale lab in Phoenix, AZ.

800-524-5454 • optek-online.com


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