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SM05-Threaded Irises

  • Lever-Actuated and Ring-Actuated Versions
  • SM05-Threaded Housing
  • Ø5.0 mm (Ø0.20") Maximum Aperture


Lever-Actuated Iris

External SM05


Ring-Actuated Iris

Internal SM05

SM05D5 Iris Shown Threaded into an
SM05L20 Lens Tube and Post Mounted
with an SM05RC Lens Tube Slip Ring

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  • Internally and Externally SM05 (0.535"-40) Threaded
  • Available in Lever- and Ring-Actuated Versions
  • Minimum Aperture: Ø0.7 mm (Ø0.03")
  • Maximum Aperture: Ø5 mm (Ø0.20")

Our SM05-threaded (0.535"-40) irises are continuously variable irises compatible with our SM05 lens tubes. Each iris has internal SM05 threading on one side and external SM05 threading on the other side. The individual black spring steel leaves pivot within the outer ring of the iris and are designed for long-lasting performance over several thousand cycles. They are available in lever-actuated or ring-actuated versions. The ring-actuated iris is ideal for use in a 16 mm cage system, where the cage rods may limit the range of lever adjustment.

Thorlabs offers a complete line of irises and apertures for a variety of applications.

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Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SM05D5 Support Documentation
SM05D5SM05 Lever-Actuated Iris Diaphragm (Ø0.7 - Ø5 mm)
SM05D5D Support Documentation
SM05D5DCustomer Inspired! SM05 Ring-Actuated Iris Diaphragm (Ø0.7 - Ø5 mm)
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