DSS25B 25mm Optical Shutter


Current Lead Time: 6 – 8 weeks

Guaranteed Lifetime: 2,000,000 Cycles


Current Lead Time: 6 – 8 weeks

The Uniblitz DSS25B is a 25mm-aperture bi-stable optical shutter that has eliminated the external protruding actuator and contains no other interfering components. This makes the DSS25B an extremely low-profile device that is capable of fitting into very tight spaces. Additionally, the device’s flat mounting surfaces make for its easy integration into virtually any system.

Bi-stable shutter devices, like the DSS25B, require no power to hold the blades in either the open or closed state.


Key Features

  • 25mm aperture
  • Bi-stable operation
  • Only two unique moving parts
  • Extremely slim, low-profile form-factor
  • RoHS Compliant
  • Transfer time on opening: 12.6 milliseconds
  • Total opening time: 25.8 milliseconds
  • Configured for the VED24 Shutter Driver



For additional technical information please see the DSS25B Optical Shutter Datasheet.

Coil Resistance Pulse Voltage to Open Hold Voltage
7.5 OHMS +10.7 VDC 1 N/A


Weight Operating Temp. Max. Opening Bounce Max. Closing Bounce Max. Freq. of Operation 2 Number of Shutter Blades
0.73 oz (20.70 g) -10 – +65 °C 15% 5% 5.0 Hz / 10.0 Hz 5


1 Peak voltage as provided by the VED24 Driver
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.


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.

DSS25B (w/ ED12DSS and Teflon® coated blades) Time (msec.)
O – A:     Delay time on opening after current applied 13.2
A – C: Transfer time on opening 12.6
O – C: Total opening time 25.8
C – E: Min. dwell time with min. input pulse 23.2
B – F: Min. equivalent exp. time 36.6
D – E: Delay time on closing after current applied 14.0
E – G: Transfer time on closing 14.0
A – G: Total window time 50.8
MET: Min. exposure time 35.0
TEP: Typical exposure pulse >35.0

Technical Drawing



DSS25B Datasheet Download


3D Models
DSS25B 3D Outline Model (STEP included in ZIP) Download

Additional information

Blade Option