Parfocal Length 60mm Plan Infinite Biological Objective

Key Benefits

• 60mm parfocal length maintains focus when switching between objectives
• Plan infinite optical system delivers flat, high-contrast images across the field
• Numerical apertures from 0.15 to 1.3 support high resolution and light collection
• 25mm field of view (FN) ensures consistent field size across all magnifications
• Semiapochromat correction at 20X, 40X, 60X, and 100X reduces chromatic and spherical aberration

Application Scenarios

• Routine histology and cytology slide examination in clinical or research labs
• Microscopic inspection of tissue sections and cell cultures under varying magnifications
• Quality control in pharmaceutical or biotech labs where consistent focus is critical
• Teaching labs where students switch between objectives without refocusing
• Industrial inspection of small components with high optical clarity requirements

Who It Is For

• Clinical, veterinary and research laboratories
• Teaching and training labs in universities and schools
• Pharmaceutical and biotechnology quality control departments
• Industrial inspection lines requiring consistent focus across magnifications
• Microscopy technicians performing routine slide analysis

Problems It Solves

• Changing objectives without refocusing disrupts workflow and increases inspection time
• Non-parfocal objectives require constant re-adjustment, increasing operator fatigue
• Poor optical correction leads to blurred edges and inaccurate measurements
• Inconsistent field of view across magnifications makes comparative analysis difficult
• Mismatched parfocal lengths prevent use across different microscope bodies

Technical Features

• Plan infinite optical system for flat, high-contrast imaging
• Semiapochromat correction at 20X, 40X, 60X, and 100X for reduced chromatic and spherical aberration
• 60mm parfocal length ensures focus retention when switching objectives
• 25mm field number (FN) provides consistent field of view across all magnifications
• Numerical aperture values from 0.15 to 1.3 support high resolution and light gathering

Specifications

Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.

Comparison With Other Options

Use Guide

• Ensure the microscope tube length is set to infinity for proper focus with the plan infinite objective
• Always switch objectives in order from lowest to highest magnification to maintain focus stability
• Use immersion oil only with the 100X objective; do not use oil with lower magnifications
• Clean the front lens with lens paper before and after use to prevent contamination
• Avoid touching the front element with fingers to prevent oil residue and scratches