20mm Max. Aperture, Mounted Iris Diaphragm

Product Details Used to Adjust f/#, Field Stop Diameter, and Overall Light Throughput Mounted Version Features a Tapped Hole for Post Mounting Abundant Types for Varying Applications Standard Series Iris Diaphragms can provide control of system f/# (f/# = focal length/effective diameter), field stop diameter, and overall energy throughput when incorporated into standard optical systems. It should be noted that the location of the iris is critical to how it will affect the system. All of these diaphragms offer exceptionally smooth operation over the lever travel, from maximum to minimum aperture (approximately 90°). Mounted versions of these diaphragms feature a tapped hole for easy post mounting. Standard Series Iris Diaphragms have blued spring steel leave construction and black housing finish with lever actuators that are available in two styles: stainless steel “pin” or plastic “tab.” These diaphragms are specifically designed for OEM integration and general laboratory use. For specific OEM application assistance, please contact our Applications Engineering Department . Note: Iris Diaphragm Mounts sold separately. Specifications General Type: Mounted Physical & Mechanical Properties Maximum Aperture (mm): 20.0 Outer Diameter (mm): 52.0 Construction: Brass Housing, Blue Tempered Steel Leaves Inner Diameter (mm): 30.0 Lever Diameter (mm): 3.00 Lever Length (mm): 13.20 Number of Leaves: 12.00 Thickness (mm): 6.50 Optical Properties Minimum Aperture (mm): 1.2 Threading & Mounting Mounting Threads: #8-32 M4 x 0.7 Set Screw Thread: 4-40 Regulatory Compliance RoHS 2015: Exempt × Certificate of Conformance: View × Reach 235: Contains SVHC(s) ×