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SmartShutter
Stepper-motor Driven Shutter
The SmartShutter is
designed to complement our growing line of optical products
and sets a new standard for shutter performance and reliability.
In the traditional shutter design there are two or more “leaves” that
rub against each other. Given time, the blades will wear
down, bind, and the shutter will fail to open. The SmartShutter
is designed with only one moving part, which virtually eliminates
the effects of wear and markedly improves performance. In
the traditional shutter design there is an additional issue
of the leaves binding in extreme temperature conditions.
Our improved design uses heat resistant material that performs
well under very high temperature conditions, extending the
life of the shutter.
The SmartShutter incorporates
a new high-performance motor drive and precision stepper-motor
to provide added control and durability. Traditional shutters
use a solenoid actuator requiring a high initial opening
voltage for rapid opening of the shutter. This can overheat
or burn out the coil of the shutter if the shutter is opened
too frequently. With our microprocessor controlled motor/wiper
design, we can control the trajectory of each move and optimize
the motion of the blade for speed or for smoothness.
The SmartShutter, in
either the 25mm or 35mm version, operates with open/close
times of 8msec from the command (3msec from the start of motion). Since our
robust design does not rely on over-driving the windings,
we can achieve continuous
operation at frequencies up to 35 Hz for the 25mm version, and 20 Hz for the
35mm model. Because the shutter blade is stopped by the action of the motor
rather than mechanical stops, SmartShutter units tested for
over 10 million cycles show
no sign of failure. The microprocessor-based controller provides exceptional
versatility and is adaptable to various modes of operation and function. The
SmartShutter can be programmed for a variety of movement profiles or to produce
a variable aperture by determining the degree of shutter opening. When used
in our Lambda LS xenon light source and coupled with a liquid
light guide, the shutter
acts as a programmable neutral density filter. In addition, while the impulse
of our shutter is minimal, a “soft” action mode can be selected to
decrease vibration.
The SmartShutter controller
is capable of driving up to two shutters. To support this
function a TTL input is supplied for remote triggering of
the shutter,
as well as a TTL output to support remote triggering of external devices
such as
a camera. The controller can also be operated locally (manually) from the
controller keypad or remotely from a computer through either
the USB or serial port, or
opened and closed using a logic level input. The SmartShutter also accepts
commands to the Lambda 10-3 and Lambda 10-B controllers.
Originally designed to
be integrated into our 25mm and 35mm filter wheels, housings
are also available for stand-alone units and for use with
our Lambda LS and Lambda DG-4/DG-5 optical products. The modularity
of the SmartShutter assures that repairs, should they be necessary,
are simple and economical.
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• Robust design
• Life tested to 100 million
cycles
• Modular repairable design
• Opening time 8msec from trigger
(for 25mm & 35mm versions)
• Continuous operation frequencies
as high as 40Hz
• Stand-alone or use with Sutter
filter wheel
• Mountable in Lambda LS and
Lambda DG-4/DG-5
• Microprocessor based controller
• “Soft” action mode provides minimum vibration
• Selection partial opening
function for neutral density
• Serial, USB and TTL interfaces
• Manual input via keypad
• Universal power supply
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