Olympus OM system close-up and macro equipment

Aperture Iris Diaphragm

Introduction

The Aperture Iris Diaphragm was designed for use with the Trans-Illuminator Base XD-E. It is shown in brochures and instruction manuals for the Olympus X stereomicroscope, but it seems to have been discontinued before the Olympus OM system was introduced.

Aperture Iris Diaphragm

Versions

Only one version is known

Instructions

Aperture Iris Diaphragm

The iris apparatus is an accessory to control the beam of trans-illumination or to provide oblique illumination. It is set underneath the top of the sub-stage base. First set the slide rail and the iris sleeve at the appropriate position, insert the iris frame from below, then tighten the iris clamp screws 51. The iris may be opened or closed by horizontal movement of the aperture lever 53 producing an aperture adjustable from 2 mm to 40 mm in diameter. By pulling and pushing (not rotating) the iris positioning lever 54, desired oblique illumination can be obtained.

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Olympus OM system close-up and macro equipment