零孔徑系列可變光圈

零孔徑系列的設計與製造所採用的高品質操作與標準系列可變光圈相同，可提供全消光功能。此類控制通常用於必須量測暗訊號(背景雜訊)以執行校準的系統。Two sets of leaves are used which are mounted on different tiers and are moved by one lever. For each iris, there are two additional relief leaves (not listed in table) that are not visible.

Note: Iris Diaphragm Mounts sold separately.

技術資訊

Outer Diameter A	Maximum Aperture B	Minimum Aperture C	Thickness D	Stock No.
102mm	75mm	0mm	9.1mm	#64-506
21mm	12mm		6.2mm	#53-906
29mm	12mm		6.1mm	#62-649
38mm	25mm			#53-907
54mm	37mm		7.5mm	#53-908
72mm	50mm		9.1mm	#53-909
37mm	12mm		6.2mm	#62-653
54mm	25mm		6.1mm	#62-654
67mm	37mm		7.5mm	#62-655
88mm	50mm		9.1mm	#62-656