Quadrant Photodiodes (VR = -10V)

The SPOT Series are common substrate photodetectors segmented into either two (2) or four (4) separate active areas. They are available with either a 0.005” or 0.0004” well defined gap between the adjacent elements resulting in high response uniformity between the elements. The SPOT series are ideal for very accurate nulling or centering applications. Position information can be obtained when the light spot diameter is larger than the spacing between the cells.


Machine Tool Alignment

Position Measuring

Beam Centering

Surface Profiling


Guidance Systems


High Accuracy

Excellent Resolution

High-Speed Response

Ultra Low Dark Current

Excellent Response Match

High Stability over Time and Temperature

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