LS3 3mm Laser Shutter


Current Lead Time: 5 – 6 weeks


Current Lead Time: 5 – 6 weeks

The Uniblitz LS3 is a high-performance laser shutter, ideal for precision exposure control, laser switching, and other applications that benefit from the precise, repeatable characteristics of the LS shutter series. These include low level laser chopping, and pulse gating, selection, and modulation to 200Hz.

Uni-stable shutter devices, like the LS3, require power to hold the blades in the open state (though the device can be custom-configured for “normally open” operation).

501A-S7 Shutter Adapter Cable is required for use with VMM-D3, VMM-D4, D880C and any VCM-D1 purchased prior to November 2022.

Vacuum compatibility option available upon request.

Key Features

  • 3mm aperture
  • Uni-stable operation
  • Laser Energy Rating: 5 W/mm2 (with “ZM” blades)
  • RoHS Compliant
  • Transfer time on opening: 0.5 milliseconds
  • Total opening time: 1.5 milliseconds
  • Configured for the VCM-D1 Shutter Driver



For additional technical information please see the LS3 Laser Shutter Datasheet.

Coil Resistance Pulse Voltage to Open Hold Voltage1 (Nominal)
48 OHMS +65 VDC +10 VDC


Weight Housed Operating Temp. Max. Opening Bounce Max. Closing Bounce Max. Freq. of Operation2 Number of Shutter Blades
7.41 oz (0.21 kg) 0 – 80 °C 15% 5% 50 Hz / 200 Hz 2


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. For the LS3, this system uses a similar activation flag attached to the mechanism, which triggers a reflective emitter/detector device. No connection to the designated synchronization pins when no electronic sync. is selected.Uniblitz LS 5-pin sync schematic, pin diagram


Shutter Timing


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.


LS3 (w/ VCM-D1 driver and Teflon® coated blades) Time (msec.)
0-A:     Delay time on opening after current is applied 1.0
A-C: Transfer time on opening 0.5
0-C: Total opening time 1.5
C-E: Min. dwell time with min. input pulse 0.8
B-F: Min. equivalent exp. time 1.5
E-G: Transfer time on closing 0.6
A-G: Total window time 1.9
MET: Min. exposure time 2.0
TEP: Typical exposure pulse >2.3


Technical Drawings

Housing/Connector Layout

Uniblitz LS3 Technical Drawing (Housing/Connector Layout)

Un-housed Layout

Uniblitz LS3 Technical Drawing (Unhoused)

510A Interconnect Cable (Included)

Uniblitz 510A interconnect cable



LS3 Datasheet Download


3D Models
LS3 3D Models (Housed/Unhoused – STEP files included in ZIP) Download

Additional information

Driver Compatibility


Blade Option

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Electronic Sync.