Progressive Lens Meter Alignment Guide Mark System

The system continuously monitors the measurement position relative to the progressive lens and provides real-time feedback through guide marks on the alignment screen. The guide marks dynamically indicate the direction and amount of displacement from the near vision portion, enabling users to adjust the lens position iteratively until accurate alignment is achieved.

The guide mark serves as an intermediary visual element between the user and the complex optical measurement system. Instead of requiring users to directly interpret optical characteristics or complex alignment parameters, the guide mark translates this information into intuitive directional and quantitative guidance that users can easily understand and act upon.

The system performs preliminary measurements at multiple positions across the progressive lens to establish the optical characteristics map before final alignment is achieved. This preliminary data collection enables the calculation of displacement from the near vision portion, which is then used to generate guidance for rapid alignment adjustment without requiring repeated full measurement cycles.

The system utilizes changes in optical parameters (such as spherical equivalent power or additional power) measured at different positions to detect the displacement from the near vision portion. By monitoring these parameter variations, the system can quickly determine alignment status and guide adjustments without time-consuming direct position measurement.