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High-Speed, High-Accuracy CCD Laser Displacement SensorLK-G3000 series

Sensor Head, Wide Type



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Reference distance

500 mm (diffuse reflection), 497.5 mm (specular reflection)

Measuring range

-250 to +500 mm-9.843" to 19.685" (diffuse reflection), -249 to +498 mm-9.80" a +19.61" (specular reflection)

Light source


Red semiconductor laser


655nm (Visible light), Class 3R laser product (JIS C6802)

Laser Class

Class 3R (IEC 60825-1), Class IIIa (FDA CDRH Part 1040.10)


4.8 mW maximum

Spot diameter (at reference distance)

Approx. 300 x 9,500 µm


±0.05% of F.S. (-250 mm to +250 mm -9.84" to +9.84"), long range: ±0.1% of F.S. (-250 mm to +500 mm -9.84" to 19.69"), high-accuracy range: ±0.02% of F.S. (-250 mm to -50 mm -9.84" to -1.97") F.S. = ±250 mm ±9.84"*1


2 µm 0.000079"*2

Sampling frequency

20/50/100/200/500/1,000 µs (Selectable from 6 levels)

LED display

Near the center of the measurement: Green lights
Within the measurement area: Orange lights
Outside the measurement area: Orange flashing

Temperature characteristics

0.01% of F.S./˚C (F.S.= ±250 mm ±9.84")

Environmental resistance

Enclosure rating

IP67 (IEC60529)

Ambient light

Incandescent lamp or Fluorescent lamp: 10,000 lux max.

Ambient temperature

0 to +50 °C 32 to 122 °F

Relative humidity

35 to 85 % RH (No condensation)

Vibration resistance

10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions


Aluminum die-cast


Approx. 380 g (including the cable)

*1 This value was taken when measuring a KEYENCE standard target (ceramic) in standard mode.
*2 These values were taken when measuring a KEYENCE standard target (SUS) at a reference distance and with the number of averaging measurements set to 4,096

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Measurement Sensors