Model Number: Adjustable Iris Diaphragm Key benefits Precise control of illumination and aperture: smoothly vary the aperture from 1.5 mm to 26 mm to control light intensity, contrast, and depth of field for clearer, more reproducible images. Compact, lowprofile design: 5.5 mm thickness allows installation in tight optical paths and condensers where space is limited. Durable and stable construction: made from quality materials to withstand repeated adjustments and maintain alignment during experiments. What it does Functions as an adjustable iris diaphragm for microscopes and optical assemblies, allowing you to set the aperture size quickly and reliably to suit different specimens, objectives, or imaging conditions. Key specifications Model Number: Adjustable Iris Diaphragm Thickness: 5.5 mm Minimum aperture diameter: 1.5 mm Maximum aperture diameter: 26 mm Construction: quality materials for durability and stable performance Why customers need it Improves image quality by reducing stray light and controlling numerical aperture. Enables repeatable experimental conditions by providing a consistent, adjustable aperture stop. Saves space and integrates easily where a thin diaphragm is required. Compatibility and performance Designed as a microscope accessory for insertion into condensers, illumination paths, or custom optical setups that accept a thin, adjustable diaphragm. Offers fine, repeatable aperture adjustment to support a range of imaging and experimental needs. Typical applications Brightfield microscopy: adjust aperture to enhance contrast and control depth of field when imaging stained or transparent samples. Imaging with cameras or sensors: limit the illumination cone to reduce flare and improve sharpness for digital capture. Optical experiments and bench setups: use as an adjustable aperture in alignment, beam shaping, or photonics prototyping. What to expect A compact, reliable iris diaphragm that provides a wide aperture range (1.5–26 mm) in a 5.5 mm thick package, built to withstand regular laboratory use while delivering stable, repeatable performance.