CDM-12 Ring-Driven Adjustable Iris Diaphragm

Product Description

• Ring-driven iris design, ideal for cage system construction
• The laser-engraved scale version indicates the aperture size
• Reducing the aperture can effectively block incident light
• Male SM1 threads compatible with our CSJ-30 cage plates

The CDM-12 graduated iris features an additional laser-engraved scale that marks the actual aperture size in millimeters with a tolerance of ±0.5mm. This designed iris is perfectly suited for integration into cage systems requiring only fine adjustment and alignment. It is equipped with male threads and compatible with our standard Ø1-inch lens tubes, 30mm cage plates and related accessories.

 

Model	CDM-12
Specifications	Ø34.3*13mm
Adjustable Aperture	Ø1–Ø12mm
Thread Type	SM1 (1.035”-40) male thread
Weight	22.7g
Material	7075 Aluminum Alloy

Technical Description

(1) The CDM-12 graduated iris is fitted with an additional laser-engraved scale that labels the actual aperture size in millimeters with a tolerance of ±0.5mm. This iris is ideally designed for integration into cage systems that only need fine-tuning and alignment, and it features male SM1 threads.

(2) SM1 (1.035”-40) threads are provided on both sides, compatible with Oeabt series threaded cage plates or lens tube assemblies. It is ring-controlled with black spring steel blades, and the clear aperture can be adjusted from Ø1mm to Ø12mm by rotating the ring. A 1.3mm locking screw on the side enables secure fixation and locking.

(3) The CDM-12 iris is supplied with an additional laser scale that indicates the actual aperture diameter in millimeters within a tolerance of ±0.5mm. In applications where the iris is not directly visible, such as lens tube configurations, this scale greatly simplifies the process of optimizing the aperture diameter.

Assembly

Application Examples

Engineering Drawings