Fully Operational with Expanded Resources Click for the latest on how KEYENCE is continuing to support our customers with quick delivery, off-site testing, virtual demos and more.
  1. Home
  2. Products
  3. Measurement Sensors
  4. Laser Displacement Sensors
  5. CCD Laser Displacement Sensor
  6. Models
  7. Sensor Head, Small Spot

CCD Laser Displacement SensorLK series

Sensor Head, Small Spot


[Discontinued model]

This model has been discontinued.

Compliance with the certification standard is ensured as of the time of shipment from our company.

Recommended Replaceable Products
To contact us:


Select Language




Sensor head Compact high-accuracy Sensor head

Measurement mode

Normal,mirror surface

Reference distance

10 mm (Normal),7.0 mm (mirror surface)

Measuring range

±1 mm (Normal),±0.9 mm (mirror surface)

Light source


Visible red semiconductor laser


670nm (Visible light), Class 2 laser product (JIS C6802)


0.95 mW maximum

Laser Class

Part 1040.10

Class 2 Laser Product


IEC 60825-1

Spot diameter (at standard distance)

Approx. 20 µm


±0.25% of F.S. *1


0.1 µm*2

Analogue output

Output voltage

±10 V (±9 V) (0.1 µm/mV)*3


100 Ω

Output current

4 to 20 mA (Applicable load: 350 Ω max.)

Alarm output

NPN: 100 mA max. (40 V max.) (N.C.), Residual voltage: 1 V max.

Sampling cycle

128, 256, 512, 2,048 µs (selectable)

Other functions

Auto-zero, analog output holding when an alarm occurs, gain switching, response switching, span and shift adjustment of mirror surface measurement mode, changing the sampling cycle

Temperature characteristics

0.04% of F.S./°C


Power voltage

24 VDC ±10 %, Ripple (P-P) 10 % or less

Maximum current consumption

400 mA max.

Environmental resistance

Enclosure rating


Ambient light

Incandescent or fl uorescent lamp: 10,000 lux max.

Ambient temperature

0 to +50 °C (No condensation)

Relative humidity

35 to 85 % RH (No condensation)

Vibration resistance

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


Aluminium die-cast


Approx. 80 g (including cable)

*1 Linearity was obtained using KEYENCE's standard target (Zirconia block gauge: LK-031/036, LK-081/086, LK-011, White ceramic block gauge: LK-501/503).
*2 Repeatability was obtained using KEYENCE's analogue sensor controller (RD-50) with the number of averaging measurements set to 64.
Note: The ripple of the analogue output may be 1 mV or more due to co mmon mode noise when observed with an oscilloscope or a high-speed A/D conversion board.
*3 When measurement is impossible, 12 V (31.2 mA) is output.

Measurement Library

  • Trade Shows and Exhibitions
  • eNews Subscribe

Measurement Sensors