VS25 25mm Optical Shutter

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Overview

The Uniblitz VS25 has been designed to provide accurate, repeatable exposures for a wide variety of applications. The VS series shutters have been successfully field tested in microscopy, video imaging, PMT protection, and photographic applications worldwide. The VS25 is available in a housed or un-housed configuration for OEM applications (or simply where spatial limitations are a consideration).

Uni-stable shutter devices, like the VS25, require power to hold the blades in the open state (though the device can be custom-configured for “normally open” operation).

Specifications

For additional technical information please see the VS25 Optical Shutter Datasheet.

1 Voltage level required across actuator coil when being held in the open position.
2 (Continuous/Burst) Continuous frequency rating specified at shutter’s minimum exposure pulse. Burst frequency rating specified for four (4) seconds maximum with one (1) minute minimum between bursts.

Electronic Synchronization System

The Electronic Synchronization System provides a feedback signal (through the driver utilized) after the shutter transfers to the open state. The system incorporates an infrared emitting diode, an infrared sensitive detecting transistor, and an interrupting vane. The vane is attached to the shutter so as to block the light path between the emitter and detector in the closed position. When the shutter transfers to the 80% open position, the vane is removed from the infrared light path, allowing the emitter to switch the detector to the active state. No connection to the designated synchronization pins when no electronic sync. is selected.

Shutter Timing

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The question regarding enhancement of shutter speed with the application of user supplied lubricants has been repeatedly asked. It is our experience that lubricating the shutter blades will actually slow the shutter down and eventually render the shutter inoperable. Under no circumstances should any type of lubricant be applied to the shutter blade area.

 

VS25 (w/ VCM-D1 and Teflon® coated blades)		Time (msec.)
0-A:	Delay time on opening after current is applied	3.0
A-C:	Transfer time on opening	3.0
0-C:	Total opening time	6.0
C-E:	Min. dwell time with min. input pulse	2.0
B-F:	Min. equivalent exp. time	6.0
E-G:	Transfer time on closing	5.0
A-G:	Total window time	10.0
MET:	Min. exposure time	6.0
TEP:	Typical exposure pulse	>8.0

 

Technical Drawings

Housed

Un-housed

Connector Layout