Displaytech makes both standard Shutters and Video Shutters in a variety of aperture sizes and housing types. Our shutters are highly reliable, contain no moving parts, have < ms one state transition time and a high contrast ratio.

Safety Interlock and Process Control Shutters

These shutters are designed for high optical power and damage thresholds, but with lower emphasis on speed.

The Safety Interlock Shutter is normally kept open for long periods of time, closing only for breaches in the safety system or at the end of an experiment.

The Process Control Shutter is used at frequent intervals, allowing equipment to move or change in between optical exposures. An example would be laser cutting. At various points, the shutter would block the laser to allow table repositioning and cutting to resume.

All Safety Interlock and Process Control Shutters are failsafe and close upon power loss. They are not dependent on gravity to close.

Switching speed requirements for safety and process applications are moderate. The flexure technology used in these products offer inherent fast switching without developing large heat loads in the electromagnet.

Position sensors are on most of the models, providing a safety or process circuit with verification that the shutter did indeed open or close as it was instructed to do from the power circuit.

These position sensors are completely independent of the power circuit. They audit the physical movement of the flexure blade, with either solid-state opto-interrupters for smaller apertures, or mechanical micro-switches for larger apertures.

The solid-state sensors are powered from regulated 5 VDC at about 20 mA current budget. There are two output leads which yield a logic hi or lo depending on shutter state.

Our CX2450B controller series provide the 5 V and offer the output conveniently on a terminal strip at the rear of the controller.

The output signals are logic ready TTL totem pole outputs, able to drive up to about 5 mA. This signal can be used to control software or to drive power electronics for warning light illumination.

The mechanical micro-switches provide contact closure for the open and closed states. There are two leads for each switch. Typically switches are operated at 5, 12, 24 VDC at a few tens of mA, but are rated for use at several Amps. Contact resistance is less than 5 ohms with cable loss included.

Many of these models are driven with user-built circuitry. Switching speed is very dependent on the circuit, with more advanced circuits providing faster speeds. In general, all models close in less than 50 msec, with an approximate rule of 4 msec per mm of aperture diameter.

UNIBLITZ CS35 Shutter - 35mm Aperture

The CS35 shutter incorporates a new miniature actuator system that can be driven with the existing VCM driver.
As an option, the shutter may also be equipped with an electronic synchronisation system to increase the shutter's flexibility.

It is available in a cased or uncased OEM version and can be electronically programmed to fire specific exposures at precise time intervals. The new shutter's multi-bladed design combined with its new miniature actuator, and the patented state-of-the-art CS damping system provides increased reliability over other designs of this type.

With its new housing design, dual RJ45 RS-232 addressable serial interface, and new ODU push-lock shutter connector, (among other enhancements) provide a shutter driver unit even more versatile for the most demanding shutter applications.



Note :

The VMM series of controllers will no longer be available in the European Union.

Series	Aperture	Time to Open
BDS25	25 mm	13.0 msec
CS25	25 mm	9.0 msec
CS35	35 mm	13.0 msec
CS45	45 mm	14.0 msec
CS65	65 mm	29.0 msec
CS90	90 mm	70.0 msec
LS2	2 mm	300 µsec
LS3	3 mm	500 µsec
LS6	6 mm	700 µsec
QCS45	45 mm	14.0 msec
UHS1	1 mm	180 µsec
VS14	14 mm	1.5 msec
VS25	25 mm	3.0 msec
VS35	35 mm	13.0 msec
XRS14	14 mm	20.0 msec
XRS25	25 mm	10.0 msec
XRS6	6 mm	3.2 msec