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Post-Mountable Iris Diaphragms


  • Continuously Variable Irises with Sizes Range from Ø5 mm to Ø75 mm
  • Black Anodized Aluminum Housing to Limit Reflections
  • Black and Stainless Steel Blades Available

ID12

ID25

ID25Z

IDA25-P5

Pack of 5 with Threaded Stud

ID5MS

Mini-Series Iris
Enlarged to Show
Detail

ID25SS

Enlarged to Show
Stainless Steel Leaves

Related Items


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Aperture Comparison
Click to Enlarge

Comparison of Minimum Aperture Sizes

Features

  • Continuously Variable
  • Single Irises Include Housing and Mounting Post
  • Select Irises Available in Packs of 5 without Mounting Post
  • Black Anodized Aluminum Housing Limits Reflection
  • Custom Sizes Available
  • Unmounted Iris Diaphragms Also Available

These lever-actuated, continuously variable iris diaphragms are designed to provide smooth operation over many thousands of cycles. The individual steel leaves pivot within a black-anodized aluminum housing.

With the exception of the Mini-Series Mounted Iris Diaphragm (ID5MS, ID5MS/M), which is mounted on a Ø6 mm post that is compatible with our Mini-Series line, all single iris diaphragms listed below are mounted on a removable 3" (75 mm) long Ø1/2" post. Single irises without the post are available as a special by contacting tech supportSelect irses (Item # Prefix IDA) are also sold in packs of five with a bottom-located 8-32 (M4) setscrew but no mounting post.

In addition to the post-mountable irises sold on this page, Thorlabs also offers SM-threaded Lever-Actuated Irises and
Ring-Actuated Irises. In addition, we offer Cage System Irises for use with 30 mm and 60 mm cage systems.


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Posted Comments:
Poster:cacao23
Posted Date:2016-05-23 18:13:49.713
Dear, I have a question. Is that iris makes back beam?? except for center hole.
Poster:shallwig
Posted Date:2016-05-25 03:36:14.0
This is a response from Stefan at Thorlabs. Thank you for your inquiry. The housing of the iris diaphragms are made from anodized aluminum to limit reflections. The leaves are made either from black spring steel or from Stainless Steel with different reflection properties. I have contacted you directly to check your application in detail.
Poster:popei
Posted Date:2016-01-27 11:50:59.34
The height of the post supplied with the iris is too large for our needs. It would be useful if one could purchase the iris without the post.
Poster:shallwig
Posted Date:2016-01-28 03:31:18.0
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. We offer these iris without post as special. I will contact you directly to check for which Iris you need a quote and if you have any further questions.
Poster:daaf.sandkuijl
Posted Date:2015-09-01 06:50:25.75
It would be great to have an iris with matte white/light gray leaves instead of shiny and dark gray, for alignment purposes. In fact if that were available it would be the only type of iris I would use.
Poster:shallwig
Posted Date:2015-09-02 05:18:04.0
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. At the moment we can only offer our post mounted Iris diaphragms with black spring steel leaves and stainless steel leaves. I will contact you directly to check if we can offer a special with different leaves.
Poster:sfeldman
Posted Date:2014-01-06 13:52:09.18
The solid works model has a 2" post, while the overview says its a 3" post. Which is correct? And is it possible to get a 2" post instead of a 3"?
Poster:tschalk
Posted Date:2014-01-07 07:37:15.0
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. The solid work files should contain a 3" post and we will modify the files. Thank you for pointing this out. The posts can be easily removed from the iris and, if an additional 2" post (part number TR2) is purchased, this one can be attached. This would be the easiest way to get an iris with 2" post.
Poster:jlow
Posted Date:2013-01-24 11:56:53.857
Response from Jeremy at Thorlabs: Thank you very much for your feedback. We will look into this possibility. In the meantime, we could offer the iris without the optical post. You could then put the iris on the graduated post. Please contact our Tech Support group at techsupport@thorlabs.com if you would like to get a quote on the iris without a post.
Poster:kevlarp
Posted Date:2013-01-23 16:31:21.23
It would be very helpful if mounted irises were available with your graduated posts (TR3E, for example). I often need irises to be at the exact same height, and having the graduated marks on the post that comes with the iris is helpful.
Poster:bdada
Posted Date:2011-09-26 20:12:00.0
Response from Buki at Thorlabs: Thank you for your feedback. I have passed on your suggestion to our design team. In the meantime, please review our selection of alignment disks to see if any may be suitable for your application. http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=3201 I have contacted you directly to assist you in selecting one of our alignment disks that may work for you.
Poster:sshosseini
Posted Date:2011-09-23 04:14:07.0
It would be very helpful if you could make a product that can clip to the back of the irises in white color and a cross in the center of the iris. I use papers and tapes to do so for alignment purposes at dark but I also need to take the paper out and put it back in several times to check the alignment and every time I have to put it back it takes some time and I need to have more light which ruins my dark vision. ~Sona
Poster:apalmentieri
Posted Date:2009-12-15 21:46:43.0
A response from Adam at Thorlabs: We can supply these solid parts and will send you an email with these files attached.
Poster:noam
Posted Date:2009-12-09 10:19:34.0
can you please send me a solid part of ID15?

Post-Mounted Iris Diaphragms

Item # Aperturea # of Leaves O.D. / Thickness
ID8 (ID8/M) Ø0.7 to Ø8 mm 8 0.84" / 0.24" (21.4 mm / 6.0 mm)
ID12 (ID12/M) Ø0.8 to Ø12 mm 10 1.04" / 0.23" (26.4 mm / 5.8 mm)
ID15 (ID15/M) Ø0.8 to Ø15 mm 12 1.20" / 0.26" (30.6 mm / 6.5 mm)
ID20 (ID20/M) Ø0.8 to Ø20 mm 12 1.44" / 0.28" (36.6 mm / 7.0 mm)
ID25 (ID25/M) Ø1 to Ø25 mm 14 1.72" / 0.26" (43.7 mm / 6.6 mm)
ID36 (ID36/M) Ø1.3 to Ø36 mm 16 2.24" / 0.28 " (56.9 mm / 7.1 mm)
ID50 (ID50/M) Ø2 to Ø50 mm 16 3.12" / 0.35" (79.4 mm / 8.9 mm)
  • Aperture Tolerance is ±0.13 mm (±0.005")
  • Lever-Actuated, Continuously Variable Iris
  • Black Spring Steel Leaves
  • Black-Anodized Aluminum Housing
  • Mounted on 3" (75 mm) Long Post, TR3 (TR75/M)
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
ID8 Support Documentation
ID8Mounted Standard Iris, 8.0 mm Max Aperture, TR3 Post
$46.10
Lead Time
ID12 Support Documentation
ID12Mounted Standard Iris, 12.0 mm Max Aperture, TR3 Post
$45.80
Today
ID15 Support Documentation
ID15Mounted Standard Iris, 15.0 mm Max Aperture, TR3 Post
$45.60
Today
ID20 Support Documentation
ID20Mounted Standard Iris, 20.0 mm Max Aperture, TR3 Post
$47.10
Today
ID25 Support Documentation
ID25Mounted Standard Iris, 25.0 mm Max Aperture, TR3 Post
$55.10
Today
ID36 Support Documentation
ID36Mounted Standard Iris, 36.0 mm Max Aperture, TR3 Post
$68.70
Today
ID50 Support Documentation
ID50Mounted Standard Iris, 50.0 mm Max Aperture, TR3 Post
$117.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
ID8/M Support Documentation
ID8/MMounted Standard Iris, 8.0 mm Max Aperture, TR75/M Post
$46.10
Today
ID12/M Support Documentation
ID12/MMounted Standard Iris, 12 mm Max Aperture, TR75/M Post
$45.80
Today
ID15/M Support Documentation
ID15/MMounted Standard Iris, 15 mm Max Aperture, TR75/M Post
$45.60
Today
ID20/M Support Documentation
ID20/MMounted Standard Iris, 20 mm Max. Aperture, TR75/M Post
$47.10
Today
ID25/M Support Documentation
ID25/MMounted Standard Iris, 25 mm Max Aperture, TR75/M Post
$55.10
Today
ID36/M Support Documentation
ID36/MMounted Standard Iris, 36 mm Max Aperture, TR75/M Post
$68.70
Today
ID50/M Support Documentation
ID50/MMounted Standard Iris, 50 mm Max Aperture, TR75/M Post
$117.00
Today

Post-Mountable Iris Diaphragms, Packs of 5

Item # Aperturea # of Leaves O.D. / Thickness
IDA12-P5 (IDA12/M-P5) Ø0.8 to Ø12 mm 10 1.04" / 0.23" (26.4 mm / 5.8 mm)
IDA15-P5 (IDA15/M-P5) Ø0.8 to Ø15 mm 12 1.20" / 0.26" (30.6 mm / 6.5 mm)
IDA20-P5 (IDA20/M-P5) Ø0.8 to Ø20 mm 12 1.44" / 0.28" (36.6 mm / 7.2 mm)
IDA25-P5 (IDA25/M-P5) Ø1 to Ø25 mm 14 1.72" / 0.26" (43.7 mm / 6.6 mm)
  • Aperture Tolerance is ±0.13 mm (±0.005")
  • Lever-Actuated, Continuously Variable Iris
  • Black Spring Steel Leaves
  • Black-Anodized Aluminum Housing
  • Bottom-Located 8-32 (M4) Threaded Stud for Post Mounting
  • Packs of 5

These irises feature an 8-32 (M4) threaded stud and do not include a TR3(/M) post.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
IDA12-P5 Support Documentation
IDA12-P5Post-Mountable Standard Iris, 12.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$202.00
Today
IDA15-P5 Support Documentation
IDA15-P5Post-Mountable Standard Iris, 15.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$201.00
Lead Time
IDA20-P5 Support Documentation
IDA20-P5NEW!Post-Mountable Standard Iris, 20.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$208.00
Today
IDA25-P5 Support Documentation
IDA25-P5Post-Mountable Standard Iris, 25.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$248.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
IDA12/M-P5 Support Documentation
IDA12/M-P5Post-Mountable Standard Iris, 12.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$202.00
Today
IDA15/M-P5 Support Documentation
IDA15/M-P5Post-Mountable Standard Iris, 15.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$201.00
Lead Time
IDA20/M-P5 Support Documentation
IDA20/M-P5NEW!Post-Mountable Standard Iris, 20.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$208.00
Today
IDA25/M-P5 Support Documentation
IDA25/M-P5Post-Mountable Standard Iris, 25.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$248.00
Today

Zero Aperture, Post-Mounted Iris Diaphragms

Item # Aperturea # of Leaves O.D. / Thickness
ID12Z (ID12Z/M) 0 to Ø12 mm 10 1.09" / 0.32" (27.6 mm / 8 mm)
ID25Z (ID25Z/M) 0 to Ø25 mm 14 1.76" / 0.32" (44.6 mm / 8 mm)
ID37Z (ID37Z/M) 0 to Ø37 mm 16 2.56" / 0.41" (65.0 / 10.5 mm)
ID50Z (ID50Z/M) 0 to Ø50 mm 16 3.35" / 0.49" (85.0 / 12.5 mm)
ID75Z (ID75Z/M) 0 to Ø75 mm 20 4.53" / 0.51" (115 / 13 mm)
  • Aperture Tolerance is ±0.13 mm (±0.005")
  • Zero Minimum Aperture
  • Lever-Actuated, Continuously Variable Iris
  • Black Spring Steel Leaves
  • Black-Anodized Aluminum Housing
  • Dual Layer Leaf Design Reduces Apeeture to Zero When Closed
  • Mounted on 3" (75 mm) Long Post, TR3 (TR75/M)

When the lever is in the closed position, the iris aperture is completely closed with a zero diameter aperture, unlike a single layer iris, which has a non-zero diameter aperture when the lever is in the closed position. Our zero-aperture design achieves a completely closed aperture by utilizing two sets of steel leaves mounted in two adjacent planes. Please note that as the aperture gets smaller, it also becomes slightly elliptical due to the design of the iris.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
ID12Z Support Documentation
ID12ZMounted Zero Aperture Iris, 12.0 mm Max Aperture, TR3 Post
$60.30
Today
ID25Z Support Documentation
ID25ZMounted Zero Aperture Iris, 25.0 mm Max Aperture, TR3 Post
$68.70
Today
ID37Z Support Documentation
ID37ZMounted Zero Aperture Iris, 37.0 mm Max Aperture, TR3 Post
$116.00
Today
ID50Z Support Documentation
ID50ZMounted Zero Aperture Iris, 50.0 mm Max Aperture, TR3 Post
$159.00
Today
ID75Z Support Documentation
ID75ZMounted Zero Aperture Iris, 75.0 mm Max Aperture, TR3 Post
$222.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
ID12Z/M Support Documentation
ID12Z/MMounted Zero Aperture Iris, 12.0 mm Max Aperture, TR75/M Post
$60.30
Today
ID25Z/M Support Documentation
ID25Z/MMounted Zero Aperture Iris, 25.0 mm Max Aperture, TR75/M Post
$68.70
Today
ID37Z/M Support Documentation
ID37Z/MMounted Zero Aperture Iris, 37.0 mm Max Aperture, TR75/M Post
$116.00
Today
ID50Z/M Support Documentation
ID50Z/MMounted Zero Aperture Iris, 50.0 mm Max Aperture, TR75/M Post
$159.00
Today
ID75Z/M Support Documentation
ID75Z/MMounted Zero Aperture Iris, 75.0 mm Max Aperture, TR75/M Post
$222.00
Today

Stainless Steel, Post-Mounted Iris Diaphragms

Item # Aperturea # of Leaves O.D. / Thickness
ID12SS (ID2SS/M) Ø0.9 to Ø12 mm 10 1.04" / 0.23" (26.4 mm / 5.8 mm)
ID25SS (ID25SS/M) Ø0.9 to Ø25 mm 14 1.72" / 0.26" (43.7 mm / 6.6 mm)
  • Aperture Tolerance is ±0.13 mm (±0.005")
  • Stainless Steel Leaves for High Power Applications
  • Lever-Actuated, Continuously Variable Iris
  • Black-Anodized Aluminum Housing
  • Mounted on 3" (75 mm) Long Post, TR3 (TR75/M)

Please note that these irises are fabricated from magnetic stainless steel. Due to its hardness, magnetic stainless steel offers a longer lifetime than typical nonmagnetic stainless steel.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
ID12SS Support Documentation
ID12SSMounted Stainless Steel Iris, 12.0 mm Max Aperture, TR3 Post
$49.00
Today
ID25SS Support Documentation
ID25SSMounted Stainless Steel Iris, 25.0 mm Max Aperture, TR3 Post
$55.80
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
ID12SS/M Support Documentation
ID12SS/MMounted Stainless Steel Iris, 12.0 mm Max Aperture, TR75/M Post
$49.00
Today
ID25SS/M Support Documentation
ID25SS/MMounted Stainless Steel Iris, 25.0 mm Max Aperture, TR75/M Post
$55.80
Today

Mini-Series, Post-Mounted Iris Diaphragms

Item #Aperture# of LeavesO.D./Thickness
ID5MS (ID5MS/M) Ø1.0 to Ø5 mm 6 0.44" / 0.19" (11.2 mm / 4.8 mm)
  • Lever-Actuated, Continuously Variable Iris
  • Black Spring Steel Leaves
  • Black-Anodized Aluminum Housing
  • Mounted on Ø6 mm, 1.5" (38 mm) Long Post

This product is designed to be compatible with our Mini-Series Posts components and is optimal for applications in which space is limited. The Mini-Series product line offers all of the essential building blocks for miniature and OEM-level optomechanical assemblies.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
ID5MS Support Documentation
ID5MSMini-Series Post-Mounted Iris, Ø5.0 mm Max Aperture (Ø6 mm Post, 1.5" Long)
$67.90
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
ID5MS/M Support Documentation
ID5MS/MMini-Series Post-Mounted Iris, Ø5.0 mm Max Aperture (Ø6 mm Post, 38 mm Long)
$67.90
Today
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