Professional manual iris diaphragm for optical lenses and industrial cameras with adjustable aperture from 2-29mm.

• High-Precision Large-Aperture Control: Features a significantly wide Enlargement Diameter​ range of 2mm to 29mm, allowing for precise regulation of light intake and depth of field in optical systems requiring substantial light control.
• Robust Industrial Build: With a thickness of 4.8mm​ and a substantial outer diameter of 51.8mm, this large-format iris diaphragm utilizes a durable metal construction with multiple mounting holes for secure integration into heavy-duty machinery.
• Efficient Manual Adjustment: Equipped with a U-notch style lever on the rim, the device allows for quick, smooth, and tactile manual adjustment of the aperture blades to the desired size.
• Optimized Optical Aperture: The precisely engineered overlapping blades form a near-perfect circular opening, minimizing optical distortion and vignetting while maximizing image quality for the connected lens system.

Application Scenarios

• Macro & Large-Scale Machine Vision: Ideal for high-resolution inspection systems, large FOV (Field of View) optical setups, or macro photography rigs where controlling a wide range of light diameters is critical.
• Scientific & Laboratory Equipment: Commonly used in optical benches, spectroscopy systems, and custom telescope/collimator builds where accurate aperture management affects measurement precision.
• Custom Lens Assemblies & R&D Prototyping: Serves as a fundamental component for engineers and researchers building custom optical lenses or modifying existing camera lenses for specialized scientific or industrial applications.
• Precision Spectral Imaging Equipment: Provides continuous aperture adjustment for portable spectrum acquisition and optical detection devices.

Inside a manual aperture lens, there is a set of adjustable metal blades (aperture blades). By rotating the aperture ring, the blades can be made to contract or expand, thus adjusting the aperture diameter (F-number).

Chengdu Century Huasha Trading Co., Ltd. (CCHT) is located in Chengdu, the largest and most developed city in southwest China.

CCHT is a professional supplier of micro drive modules, lenses, camera modules, and related components. The company supplies over 1,000 products, serves more than 100 customers, and exports to over 40 countries worldwide.

Design and customization services available to meet specific requirements.