Recent Searches
    Series ( results)
      Models ( results)
          Notice of Continued Operations (information related to COVID-19)
          Click for the latest on how KEYENCE is continuing to support our customers
          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.

          Recommended Replaceable Products
          To contact us:


          Select Language




          Sensor head Compact high-accuracy Sensor head

          Measurement mode

          Normal,mirror surface

          Reference distance

          10 mm0.39" (Normal),7.0 mm0.28" (mirror surface)

          Measuring range

          ±1 mm±0.04" (Normal),±0.9 mm±0.04" (mirror surface)

          Light source


          Visible red semiconductor laser


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


          0.95 mW maximum


          FDA (CDRH) 21CFR 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 0.000004"

          Analog output

          Voltage output

          ±10 V (±9 V)
          (0.1 µm 0.000004"/mV) *3


          100 Ω

          Current output

          4 to 20 mA (Applicable load: 350 Ωmax.)

          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 32 to 122 °F (No condensation)

          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. 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-503).
          *2 Repeatability was obtained using KEYENCE's analog sensor controller (RD-50) with the number of averaging measurements set to 64.
          Note: The ripple of the analog output may be 1 mV or more due to common 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.

          Tips of Measurement

          • General Catalog Request
          • Trade Shows and Exhibitions
          • eNews Subscribe

          Back to top

          KEYENCE CORPORATION OF AMERICA 500 Park Boulevard, Suite 200, Itasca,
          IL 60143, U.S.A.
          Phone: 1-888-KEYENCE [1-888-539-3623]
          Callers from some carriers are experiencing difficulty reaching us. If you receive a busy tone, please try again or email us at the address below. E-mail:
          Career Opportunities: KEYENCE Career Site

          Measurement Sensors