SpotOn Analog- Position Sensing

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SpotOn Analog- Position Sensing

A complete system based on a PSD sensor (Lateral Effect type) with 3m long attached cable, an electronics box and power supply.​

A complete solution for fast and extremely accurate beam positioning. The system measures both optical beam position and power.

The system offers high frequency optical beam positioning, with update rate of up to 30 KHz (for the 9x9mm PSD) and up to 60 KHz (for the 4x4mm PSD). The system measures both CW and pulsed beams, the resolution is down to 1 um.


Power supply voltage (included)Si PSD
Sensor size 4×4 mm model SPOTANA4, 9×9 mm model SPOTANA9
Operating temperature0°- 50°C
Wavelength350 – 1100 nm
Resolution Better than 1 mV for CW beams, better than 5 mV for pulsed beams
Conversion factor1 mV = 1 μm
Response time16μs (4×4), 33μs (9×9)
Input power rangeAnalog – 60 kHz (4×4), 30 kH (9×9)
Output voltage range (position X, Y)± 5V
Output voltage range (Power)≤ 10V
Included Power Supply Specifications100 – 240 VAC typical
Input frequency50 – 60 Hz
Output power10 W, ± 18V
Safety StandardUL1950/EN60950 Class II
EMIMeet EN55022/FCC Class B

Ordering Information

  • SPOTANA-4L: System with 4x4mm PSD, Low amp.
  • SPOTANA-4H: System with 4x4mm PSD, High amp.
  • SPOTANA-9L: System with 9x9mm PSD, Low amp.
  • SPOTANA-9H: System with 9x9mm PSD, High amp.


NG4 Filter: NG4 filter in mounting ring, ¾” – 32 thread

NG9 filter: NG9 filter in mounting ring, ¾” – 32 thread

Hood: 55mm long hood for ambient light suppression


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