Standard Series Iris Diaphragms

Our standard series iris diaphragms have been specifically designed for OEM integration and general laboratory use. All offer exceptionally smooth operation over the lever travel, from maximum to minimum aperture (approximately 90°). Lever actuators are available in two styles: stainless steel “pin” or plastic “tab.” All standard series diaphragms have blued spring steel leave construction and black housing finish.

Incorporated into standard optical systems, iris diaphragms can provide control of system f/# (f/# = focal length/effective diameter), field stop diameter, and overall energy throughput. It should be noted, however, that the location of the iris is critical to how it will affect the system. For specific OEM application assistance, please contact our Applications Engineering Department.

 View Legend
Description Stock No. Price In Stock  
Showing 1-20 of 37 Items | Show All Items | Sort by Spec
1, 2  | Next
Iris Diaphragm, 10mm Outer Diameter
NT54-352 $65.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 10.00
Maximum Aperture (mm) 5.00
Minimum Aperture (mm) 0.70
Thickness (mm) 4.50
Number of Leaves 5
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 1.50
Lever Length (mm) 7.50
RoHS Compliant
Iris Diaphragm, 14.8mm Outer Diameter
NT32-623 $36.80Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 14.80
Maximum Aperture (mm) 8.00
Minimum Aperture (mm) 0.70
Thickness (mm) 4.50
Number of Leaves 8
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 1.50
Lever Length (mm) 7.00
RoHS Exempt
Iris Diaphragm, 15.5mm Outer Diameter
NT42-124 $41.50Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 15.5
Maximum Aperture (mm) 8.5
Minimum Aperture (mm) 1.0
Thickness (mm) 5.3
Number of Leaves 9
Type of Lever Tab
Construction Aluminum Housing
Lever Diameter (mm) 2.50
Lever Length (mm) 8.00
RoHS Compliant
Iris Diaphragm, 19.8mm Outer Diameter
NT30-263 $39.90Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 19.80
Maximum Aperture (mm) 12.00
Minimum Aperture (mm) 0.80
Thickness (mm) 5.00
Number of Leaves 10
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 12.00
RoHS Exempt
Iris Diaphragm, 22mm Outer Diameter
NT42-123 $41.50Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 22.0
Maximum Aperture (mm) 14.0
Minimum Aperture (mm) 1.0
Thickness (mm) 6.0
Number of Leaves 10
Type of Lever Tab
Construction Aluminum Housing
Lever Diameter (mm) 4.00
Lever Length (mm) 11.50
RoHS Compliant
Iris Diaphragm, 24mm Outer Diameter
NT32-622 $41.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 24.00
Maximum Aperture (mm) 15.00
Minimum Aperture (mm) 0.80
Thickness (mm) 5.00
Number of Leaves 12
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 11.00
RoHS Compliant
Iris Diaphragm, 28mm Outer Diameter
NT32-621 $41.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 28.00
Maximum Aperture (mm) 18.00
Minimum Aperture (mm) 0.80
Thickness (mm) 5.00
Number of Leaves 12
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Compliant
Iris Diaphragm, 30mm Outer Diameter
NT35-111 $50.40Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 30.00
Maximum Aperture (mm) 20.00
Minimum Aperture (mm) 0.80
Thickness (mm) 5.50
Number of Leaves 12
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Compliant
Iris Diaphragm, 31mm Outer Diameter
NT36-623 $48.30Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 31.0
Maximum Aperture (mm) 18.0
Minimum Aperture (mm) 1.2
Thickness (mm) 6.5
Number of Leaves 11
Type of Lever Tab
Construction Aluminum Housing
Lever Diameter (mm) 5.00
Lever Length (mm) 9.50
RoHS Compliant
Iris Diaphragm, 33mm Outer Diameter
NT32-620 $48.30Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 33.00
Maximum Aperture (mm) 22.00
Minimum Aperture (mm) 0.80
Thickness (mm) 5.50
Number of Leaves 14
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Compliant
Iris Diaphragm, 37mm Outer Diameter
NT35-110 $39.90Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 37.0
Maximum Aperture (mm) 25.0
Minimum Aperture (mm) 0.8
Thickness (mm) 5.5
Number of Leaves 14
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Exempt
Iris Diaphragm, 40mm Outer Diameter
NT42-122 $55.70Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 40.00
Maximum Aperture (mm) 28.00
Minimum Aperture (mm) 1.20
Thickness (mm) 5.50
Number of Leaves 16
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Compliant
Iris Diaphragm, 42mm Outer Diameter
NT40-997 $57.80Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Outer Diameter (mm) 42.0
Maximum Aperture (mm) 25.0
Minimum Aperture (mm) 1.0
Thickness (mm) 8.5
Number of Leaves 10
Type of Lever Brass Tab
Construction Brass Housing
Lever Diameter (mm) 5.00
Lever Length (mm) 21.00
RoHS Compliant
Iris Diaphragm, 42mm Outer Diameter, Pin Lever
NT64-500 $63.30Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Outer Diameter (mm) 42.00
Maximum Aperture (mm) 30.00
Minimum Aperture (mm) 1.20
Thickness (mm) 5.50
Number of Leaves 16
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Compliant
Iris Diaphragm, 48mm Outer Diameter, Brass Tab Lever
NT40-998 $62.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 48.00
Maximum Aperture (mm) 30.00
Minimum Aperture (mm) 1.00
Thickness (mm) 12.50
Number of Leaves 12
Type of Lever Brass Tab
Construction Brass Housing
Lever Diameter (mm) 5.00
Lever Length (mm) 20.00
RoHS Compliant
Iris Diaphragm, 48.5mm Outer Diameter
NT42-121 $55.70Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 48.5
Maximum Aperture (mm) 30.0
Minimum Aperture (mm) 1.2
Thickness (mm) 7.0
Number of Leaves 10
Type of Lever Tab
Construction Aluminum Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 10.00
RoHS Not Compliant
Iris Diaphragm, 49mm Outer Diameter
NT41-972 $62.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 49.00
Maximum Aperture (mm) 34.00
Minimum Aperture (mm) 1.50
Thickness (mm) 6.50
Number of Leaves 14
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 12.50
RoHS Compliant
Iris Diaphragm, 50mm Outer Diameter
NT32-619 $57.80Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 50.00
Maximum Aperture (mm) 36.00
Minimum Aperture (mm) 1.20
Thickness (mm) 6.00
Number of Leaves 16
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 12.50
RoHS Compliant
Iris Diaphragm, 53mm Outer Diameter
NT32-618 $51.50Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 53.0
Maximum Aperture (mm) 37.0
Minimum Aperture (mm) 1.2
Thickness (mm) 6.0
Number of Leaves 16
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Not Compliant
Iris Diaphragm, 55mm Outer Diameter
NT41-973 $62.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Outer Diameter (mm) 55.00
Maximum Aperture (mm) 41.00
Minimum Aperture (mm) 1.20
Thickness (mm) 6.50
Number of Leaves 18
Type of Lever Pin
Construction Brass Housing
Lever Diameter (mm) 3.00
Lever Length (mm) 13.00
RoHS Compliant
 Sort by Spec
*All dimensions in mm
Outside Diameter A Maximum Aperture B Minimum Aperture C Thickness D Stock No.
10.0 5.0 0.7 4.5 #54-352
14.8 8.0 0.7 4.5 #32-623
15.5 8.5 1.0 5.3 #42-124
22.0 14.0 1.0 6.0 #42-123
24.0 15.0 0.8 5.0 #32-622
28.0 18.0 0.8 5.0 #32-621
30.0 20.0 0.8 5.5 #35-111
31.0 18.0 1.2 6.5 #36-623
33.0 22.0 0.8 5.5 #32-620
40.0 28.0 1.2 5.5 #42-122
48.5 30.0 1.2 7.0 #42-121
49.0 34.0 1.0 6.5 #41-972
50.0 36.0 1.2 6.0 #32-619
55.0 41.0 1.2 6.5 #41-973
58.0 42.0 1.2 6.5 #30-118
60.0 40.0 2.5 7.8 #36-624
77.0 59.0 7.0 8.0 #32-616
80.0 58.0 3.0 8.0 #32-615
82.0 60.0 4.0 10.1 #36-625
92.0 70.0 4.5 9.0 #32-614
100.0 75.0 4.0 9.0 #30-264
110.0 80.5 4.5 10.0 #32-613
120.0 90.0 5.0 12.0 #32-612
130.0 98.0 5.0 12.0 #32-611
140.0 104.0 5.0 11.0 #32-610
150.0 110.0 5.0 13.0 #60-644
165.0 120.0 6.0 15.0 #32-609
180.0 138.0 10.0 13.0 #32-608
208.0 158.0 11.0 16.0 #70-894
300.0 225.0 12.0 19.0 #70-895

Related Documents