Stainless Steel Series Iris Diaphragms

Stainless Steel Series Iris Diaphragms are designed with stainless steel lever pins and leaves within a blackened brass housing; these units will not rust or corrode under unstable environmental conditions. These diaphragms offer exceptionally smooth operation over the approximately 90° lever travel, from maximum to minimum aperture. Mounted versions of these diaphragms feature both a Metric and English tapped hole for easy post mounting. These diaphragms are offered with maximum apertures of 8 – 75mm, and with outer diameters ranging from 14.8 to 100mm. Stainless Steel Series Iris Diaphragms are ideal for dynamic control of beam width and light throughput in optical systems where environmental factors are a concern.

For specific OEM application assistance, please contact our Applications Engineering Department.

Note: Iris Diaphragm Mounts sold separately.

Technical Information

Dimensions given for unmounted irises
Outside Diameter A	Maximum Aperture B	Minimum Aperture C	Thickness D	Stock No.
				Unmounted	Mounted
14.8	8.0	0.8	4.5	#62-650	—
19.8	12.0	0.9	5.0	#53-910	#62-657
24.0	15.0	0.9	5.0	#64-501	—
28.0	18.0	0.9	5.0	#62-651	—
30.0	20.0	0.9	5.5	#64-502	—
33.0	22.0	0.9	5.5	#64-503	—
37.0	25.0	0.9	5.5	#53-911	#62-658
40.0	28.0	1.3	5.5	#64-504	—
50.0	36.0	1.6	6.0	#64-505	—
53.0	37.0	1.6	6.0	#53-912	#62-659
70.0	50.0	2.8	7.5	#53-913	#62-660
100.0	75.0	5.5	9.0	#62-652	—