Focus control is a key component for microscope automation. Almost any microscope automation application can benefit from control of the focus. Of course not all requirements for motorized focus are the same. LEP offers different options and technologies to suit the application: a simple motor for basic automated or remote focusing, add-on encoder systems for more precision and stability, piezo driven nano-precision focusing for the highest performance, as well as a integration with a laser auto focus system.
Standard Focus Drive Motor
The standard automated focus is a motor coupled to the fine focus of the microscope. The LEP precision stepper motor drive can provide very high resolution: up to 2.5 nano-meters. An optional linear encoder can be integrated with the focus motor. The encoder is fixtured to the microscope body so that it provides real-time measurement of the stage height in relation to the optics. The result is a stable, highly accurate performance that can dynamically compensate for focus drift and drive errors. Manual control of the motorized focus is also very important. The 73000365 digipot control provides positive feedback similar to a conventional microscope but with higher accuracy and less uncertainty.
Nano Precision Focus
The NanoPrecision Peizo Z-stages feature the speed, resolution and accuracy of Peizo nano positioning. Each NanoPrecision device is specifically designed to suit a particular application.
The LEP NanoPrecision design features a proprietary balanced displacement sensor to provide accurate high resolution position feedback. The system is uniquely designed to measure actual Z-stage displacement. This design provides the best performance in terms of stability and reliability – with variable loads and frequencies.
Smart Focus Encoder
The cutting edge technology of the Smart Focus Encoder is the difference between simply detecting position and actually measuring position
Laser Auto Focus
LEP has worked with MotionX to integrate their laser autofocus FOCUSTRAK module into our system. This system can be used with both the standard focus motor as well as the Nano Precision Focus insert.