Unitron ZSB Binocular Microscope head

The Unitron ZSB binocular microscope head is a dual-eyepiece optical component engineered for integration into Unitron microscope systems. It delivers enhanced viewing comfort and extended magnification capability across laboratory, research, and educational applications through a parfocal twin-zooming objective system paired with interchangeable eyepieces and auxiliary magnification lenses.

Technical Specifications

Optical Design & Magnification

• Convergent objective optical system


• Parfocal twin-zooming objective system


• Objective magnification range: 0.7x to 4.5x


• Zoom ratio: 6.5:1


• Total magnification range: 3.5x to 180x (dependent on eyepiece and auxiliary lens selection)


• Large, flat field of view with high resolution Eyepieces (Paired)


• HWF 10x - 22.5 mm field of view


• HWF 15x - 14.6 mm field of view


• HWF 20x - 10.5 mm field of view Auxiliary Lenses


• 0.5x magnification - 158 mm working distance


• 0.75x magnification - 100 mm working distance


• 1.5x magnification - 44 mm working distance


• 2.0x magnification - 30 mm working distance Adjustment Controls


• Interpupillary distance adjustment


• Diopter adjustment on eyepieces

Key Features

• Binocular optical path for reduced operator fatigue during extended observation sessions


• Parfocal objective design maintains focus across the 0.7x to 4.5x magnification range without refocusing


• Modular auxiliary lens system permits working distance optimization for varied specimen types


• High-resolution flat-field optics minimize chromatic aberration and edge distortion

Typical Applications

• Material science and metallographic specimen examination


• Biological and histological sample analysis


• Quality control and failure analysis in manufacturing environments


• Educational microscopy in academic laboratory settings


• Precision inspection requiring magnification flexibility and extended working distances

Compatibility & Integration Designed as a replacement or upgrade head for existing Unitron microscope systems. Note: This model was discontinued in 2009; availability of replacement parts and accessories through Unitron should be verified with the manufacturer.