DSS35B 35mm Optical Shutter


Current Lead Time: 6 – 8 weeks

Guaranteed Lifetime: 5,000,000 Cycles


Current Lead Time: 6 – 8 weeks

The Uniblitz DSS35B is a 35mm bi-stable optical shutter that withholds an extremely low-profile construction. The device contains no external protruding components, making it very slim and flexible for system integration. The inherent reliability of the DSS35B comes from the fact that it contains only two moving parts: the drive ring and the blades. It is guaranteed to operate for 5,000,000 operations. Bi-stable shutter devices, like the DSS35B, require no power to hold the blades in either the open or closed state.


Key Features

  • 35mm aperture
  • Bi-stable operation
  • 5M1P and 5M1SM adapters included
  • Extremely slim, low-profile form-factor
  • RoHS Compliant
  • Transfer time on opening: 23.0 milliseconds
  • Total opening time: 42.0 milliseconds
  • Configured for the VED24 Shutter Driver



For additional technical information please see the DSS35B Optical Shutter Datasheet.

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


Weight Operating Temp. Max. Opening Bounce Max. Closing Bounce Max. Freq. of Operation 3 Number of Shutter Blades
1.92 oz (54.50 g) -10 – +80 °C 15% 5% 1.5 Hz / 3.0 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.


Electronic Synchronization System

The synchronization system for the DSS35B incorporates a small magnet mounted to the driving mechanism and a Hall effect sensor. When the device achieves approximately 80% of full open, the magnet causes the Hall effect sensor to change state, producing a signal to indicate that the shutter has switched to the active state. Shown to the left is the DSS35B’s shutter schematic which incorporates this electronic synchronization system.Uniblitz DSS35B Electronic Sync Schematic 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.



DSS35B (w/ VED24 and Teflon® coated blades) Time (msec.)
O – A:     Delay time on opening after current applied 19.0
A – C: Transfer time on opening 23.0
O – C: Total opening time 42.0
C – E: Min. dwell time with min. input pulse 23.5
B – F: Min. equivalent exp. time 45.0
D – E: Delay time on closing after current applied 18.0
E – G: Transfer time on closing 20.0
A – G: Total window time 66.0
MET: Min. exposure time 45.0
TEP: Typical exposure pulse >45.0


Technical Drawing



DSS35B Datasheet Download


3D Models
DSS35B 3D Dumb Model Download

Additional information

Blade Option