The SiTek 1LA16-2,5_SU89 is a PSD array with 16 parallel 1-dimensional PSDs placed on the same chip. This enables simultaneous position read-out from the 16 segments and high speed 3D contour measurements with low cross talk betweens the segments. Each segment has the same high linearity and high speed as SiTeks standard 1-dimensional PSDs.

The PSD array consists of 16 parallel one-dimensional PSD elements on the same chip. By utilizing the triangulation technique the reflection of a laser line or multiple laser spots onto the PSD array will provide information about the contour of the illuminated object.

The possibility for simultaneous readout of the 16 elements together with the fast response of each element makes the PSD array suitable for applications like high speed 3D contour measurements and measurements of parallel, moving objects such as cantilevers.

To ensure high sensitivity the gap between the elements has been minimized, giving a fill factor of more than 97%, still with low crosstalk and the same high linearity as SiTek’s other one-dimensional PSDs.

In order to preserve the performance also under stray light conditions the PSD array has been designed with SiTek’s unique built-in stray light elimination feature, a patented design which eliminates the decrease in speed and linearity due to stray light.

The PSD array is delivered in a 34 pin dual in line type ceramic package and has a measurement length of 2,5 mm but can be custom designed with any length and/or number of PSD elements.