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LF210 Laser Autofocus System

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The LF210 combines the latest in intelligent microprocessor control and advanced optics to provide the fastest and most reliable laser autofocus available. Ideally suited for reflective specimens, the compact module incorporates precision optics that easily adjust to different microscopes and optical systems with infinity corrected optics. The new optical design eliminates the need to manually adjust the focus trim and loop gain (which is done automatically in the processor) resulting in a dramatic improvement in throughput. The intelligent digital control automatically senses when the sample has moved out of the field of view and stops the focus drive, while LED’s give a clear presentation of the focus status.

Key Features:

  • Microprocessor based for ultimate flexibility and speed
  • Easy to install and adjust
  • Electronic adjustment of focus trim when changing objectives
  • New optical design eliminates the need to manually adjust the focus trim and loop gain
  • Focus motor drives fine focus or use module to drive users focus motor LED's give status of focus
  • RS232 port allows for programming of gains, servo loops, speed and various other parameters
  • Electronic and/or mechanical limits are programmable
  • Adapts to Olympus, Nikon, Zeiss, Leica microscopes
  • Works with any infinity corrected optical system

General Specifications
PowerUniversal 5V DC external power supply. Input: 100-240V, 50/60 Hz, max 15W
Laser690nm, <1mW
Computer InterfaceRS232C, 115,200 Baud
InputsLF210 Digital:
Step motor pulse and direction
Inhibit TTL
In focus TTL
OutputsLF210 Analog:
-10 to +10VDC error signal selectable to any range within
0-10VDC laser intensity on detector

LF100K:
Step motor drive:
24 Volt
1 Amp/phase
50,000 pulses/rev (1.8 degree motor)
Command ControlsConfigure for Piezo, stepper or height output:
  • Set target focus position
  • Proportional gain constant
  • Differential gain constant
  • Integral gain constant
  • Servo delay
  • Laser on/off
  • Minimum light intensity for servo control
  • DAC slew rate
  • Position error
  • Jog focus
  • Move focus motor
  • Keypad on/off
  • In focus status
  • Servo on/off
  • Analog Piezo adjustment
  • Focus position
  • Select objective
  • Laser intensity
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