Microscope objective lens is one of the most critical optical components in any microscopy system. They determine the magnification, resolution, and working distance of your setup, directly influencing the quality and accuracy of the observation. At MCscope, we offer a comprehensive selection of objective lenses tailored for stereo microscopes, coaxial illumination microscopes, and metallurgical systems. Whether your application requires ultra-high magnification, long working distance, or superior color fidelity, our objective lenses are engineered to deliver.
Microscope Objective Lens for Industrial Applications | MCscope
What Is the Function of an Objective Lens?
The objective lens gathers light from the sample and magnifies the image before passing it through the rest of the optical path. It is primarily responsible for:
- Determining total system magnification
- Influencing resolution and clarity
- Controlling field of view and depth of field
- Controlling field of view and depth of field
Why Do Different Microscopes Require Different Objective Lenses?
Microscopes are designed for various applications, and each type has unique optical requirements:
Biological Microscopes typically use high-magnification lenses (40X, 100X) optimized for transmitted light and high numerical apertures to observe thin, transparent samples like cells and tissues.
Stereo Microscopes operate at low magnifications (0.5X–2X) with long working distances to support three-dimensional viewing and manipulation of specimens, ideal for electronics, insects, or assembly tasks.
Metallurgical Microscopes and Coaxial Illumination Microscopes use reflected light objectives with flat-field correction to inspect solid, opaque materials such as metals, wafers, or circuit boards.
Because of these varying demands in illumination type, magnification range, numerical aperture, and working distance, objective lenses must be designed to match the optical system and application. Selecting the appropriate lens type ensures optimal imaging performance.
Explore Our Microscope Objective Lens Line-Up
Objective Lenses for Stereo Microscopes
Plan Achromatic Metallurgical Objective Lenses provide high-contrast, flat-field imaging with advanced aberration correction, making them ideal for metallographic analysis, quality control, and materials research. These lenses deliver edge-to-edge clarity for grain structure, phase distribution, and defect inspection in metals, ceramics, and composites.
- Plan achromatic correction ensures flat-field imaging across the entire viewPlan achromatic correction ensures flat-field imaging across the entire view
- Advanced multilayer anti-reflective coatings enhance image contrast and reduce glare
- Engineered for high-resolution surface observation in metallurgical and materials science applications
| Infinity-Corrected Plan Achromatic Metallurgical Objective | |||||
| Magnification | 5X | 10X | 20X | 50X | 100X |
| Numerical Aperture (NA) | 0.12 | 0.25 | 0.40 | 0.55 | 0.80 |
Working Distance (WD, mm) | 23.60 | 17.70 | 10.40 | 7.00 | 3.20 |
| Focal Length (f, mm) | 40.00 | 20.00 | 10.00 | 4.00 | 2.00 |
| Resolution (R, μm) | 2.80 | 1.34 | 0.80 | 0.61 | 0.41 |
| Depth of Field (DF, μm) | 19.09 | 4.40 | 1.71 | 0.90 | 0.43 |
Object Field of View (on object, mm) | 4.40 | 2.20 | 1.10 | 0.44 | 0.22 |
Image Field of View (on image, mm) | 22.00 | 22.00 | 22.00 | 22.00 | 22.00 |
| Thread Size | 4/5×1/36” | ||||
Objective Lenses for Coaxial Illumination & Metallurgical Microscopes
Long Working Distance Plan Achromatic Metallurgical Objective Lenses offer extended clearance for bulky or heat-sensitive samples while maintaining superior optical performance. Designed for semiconductor inspection, failure analysis, and industrial applications, they enable easy sample manipulation and compatibility with specialized stages, ensuring precise imaging in demanding environments.
- Long working distances allow more space between lens and sample
- Excellent chromatic and flat-field correction
- Durable coating for reliable performance in industrial environments such as PCB inspection, fiber optics, and semiconductor research
| Long Depth of Field Achromatic Metallurgical Objective | |||||
| Magnification | 2X | 5X | 10X | 20X | 50X |
| Numerical Aperture (NA) | 0.055 | 0.14 | 0.28 | 0.34 | 0.5 |
Working Distance (WD, mm) | 33.72 | 33.61 | 33.4 | 29.56 | 18.9 |
| Focal Length (f, mm) | 100 | 40 | 20 | 10 | 4 |
| Resolution (R, μm) | 6.1 | 2.2 | 1.2 | 0.8 | 0.7 |
| Depth of Field (DF, μm) | 90.9 | 14.03 | 3.5 | 2.68 | 1.19 |
Object Field of View (on object, mm) | 12.5 | 5 | 2.5 | 1.25 | 0.5 |
Image Field of View (on image, mm) | 25 | 25 | 25 | 25 | 25 |
| Thread Size | M26X0.705 | ||||
| 5X: Minimum Field of View: 0.67 * 0.38 mm, Maximum Field of View: 4.2 * 2.37 mm 10X: Minimum Field of View: 0.34 * 0.19 mm, Maximum Field of View: 2.17 * 1.23 mm 20X: Minimum Field of View: 0.16 * 0.09 mm, Maximum Field of View: 1.02 * 0.57 mm | |||||
Need Custom Objective Lens Solutions?
Looking for a specialized optical configuration or OEM service? Contact us for tailored solutions based on your inspection or measurement requirements.
FAQ about Microscope Objective Lens
They collect and magnify light from the sample to form the primary image. Objective lenses determine magnification, resolution, field of view, and working distance.
Different magnifications allow you to observe both wide areas and fine details. For instance, 5X may be used for general inspection, while 100X reveals micro-defects.
Short working distances are ideal for high magnification and compact setups, while long working distances provide clearance for tools or large samples.
Generally no, due to differences in illumination systems and sample types. Metallurgical lenses are optimized for reflected light and solid surfaces.
Absolutely. We support OEM/ODM services, including optical modifications, mounting adjustments, and integration with custom systems for specific industry needs.