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Dover Motion - Model DOF-5 -High Bandwidth Objective Focusing Stage
The DOF-5 is a high bandwidth objective focusing stage designed to enhance travel and bandwidth capabilities, offering 5 mm travel and greater than 225 Hz bandwidth. It is positioned as a cost-effective alternative to piezo stages, utilizing piezoelectric motors while embedding a servo drive and motion controller to reduce complex cabling and overall system cost. The DOF-5 excels by providing engineering flexibility with its extended travel, eliminating the need for additional coarse positioning axes. It supports direct integration with autofocusing systems, thereby enhancing adaptability for various applications. The precision linear motor technology enables high-speed and resolution positioning without typical limitations such as short travel ranges. The DOF-5 is suitable for applications requiring nanoscale precision, such as advanced microscopy for biomedical, life sciences, and diagnostic instruments. It provides fast, accurate, and repeatable movements, vital for high-throughput digital microscopy solutions and is configurable for both vertical and horizontal applications.
The DOF-5 objective focusing stage has been engineered to offer increased travel (5 mm) and higher bandwidth (> 225 Hz) at a fraction of the cost of piezo stages with piezoelectric motors. By embedding the servo drive and motion controller inside the stage, complex cabling has been removed resulting in a lower overall system cost than competing offerings, while still maintaining equivalent or better performance.
The DOF-5 objective focusing stage has been engineered to offer increased travel (5 mm) and higher bandwidth (> 225 Hz) at a fraction of the cost of piezo stages with piezoelectric motors. By embedding the servo drive and motion controller inside the stage, complex cabling has been removed resulting in a lower overall system cost than competing offerings, while still maintaining equivalent or better performance.
With > 5 mm of travel, the DOF-5 provides more engineering flexibility. The restricted travel of piezo systems (typically 100 to 300 microns) often leads to compromises in system performance. Attempts to extend the travel, such as employing lever amplification, dramatically decrease the focus stage’s resonant frequency and stiffness. The DOF-5’s increased travel removes the need for additional coarse positioning axes. In addition, the DOF-5 can be connected directly to an Autofocus system for easy integration.
DOF-5 focusing stages offer the following features and benefits:
Hardware Agility:
- Unique, compact, integrated motion stage and miniaturized controller, with a single combined power and communications cable
- Easy integration; with minimized footprint, complexity, and lower parts count inside your instrument
- Integrated solution for multiple stages
Performance:
- Precise, high-performance motion control – and supporting software tools – for the most demanding applications
- Compelling price-to-performance ratio, achieved using an innovative and patented system architecture
- Long-life: quiet brushless linear motor, non-contact encoder, crossed-roller linear bearings
Dependability:
- Reliability and confidence of an experienced supplier
- More than 22,000 motion systems shipped to Fortune 500 companies worldwide
- On-time delivery of over 95%
Integrated Solution
- By including the encoder, interpolator, drive, and motion controller electronics all within the stage, the DOF-5 is able to achieve high in-position stability and avoid noise errors introduced by external cabling, poor grounding, and other detrimental influences on the feedback signal
- Ecosystem of DOF-5 objective focusing stage and SmartStage XY provides an integrated control solution for your applications
- Simplify software architecture with common API between X,Y, and Z stages
Precision Linear Motor
- The DOF-5 includes stiff crossed roller bearings and brushless linear servo motor actuation, providing higher servo bandwidth and a better response for optical microscopy.
- The DOF-5 design is covered under U.S. Patent 10,367,436.
- ALL controls inside; ONE external cable
- 5nm RMS Position Stability
- 25 nm Repeatability
- Easy for prototyping; cost-effective for production
- Description : Specification
- Travel (mm) : > 5
- Payload Mass (g) : 100 – 900
- Resolution (nm) : 1.25 or 5
- Servo Bandwidth (Hz) : ≥ 225 Hz
- Stability (nm RMS) : 5
- Step & Settle : 100 nm within +/- 15 nm in < 15 ms
- Bi-Directional Repeatability (nm) (for 500nm moves) : 25
- Homing Repeatability (µm) : 1
- Overall Size, excluding objective mount (mm) : 77 x 82 x 30
- Max Acceleration (m/s/s) with 1 kg : 6
- Max Velocity (mm/s) : 125 (with 5 nm resolution)
- Communications : RS232, RS485 full or half Duplex, CAN2.0B
- Inputs : Step and direction
The DOF-5 objective focusing stage was developed in response to the increasing throughput, resolution, and stability requirements of automated digital microscopy. Modern biomedical, life science and diagnostic instruments rely on automated digital microscope technologies. DNA sequencers, cell imaging instruments, and digital pathology scanners are just a few of the many applications for digital microscopy solutions. We have shipped thousands of objective focusing stages to support applications including:
- Next-generation sequencing (NGS)
- Digital cell morphology
- Automated digital pathology
- Optical metrology instruments
- Semiconductor and nanotechnology imaging
- Digital microscopes
- High content imaging
- Automated cell counting