Microscope Objective
Optical lenses designed to mount on microscope stands and provide magnification and resolution for biological, metallurgical, fluorescence and phase contrast inspection tasks.
Microscope objectives are precision optical components that attach to the nosepiece of a microscope stand and provide magnification, resolution and contrast for detailed inspection of samples. This category includes achromatic, plan infinity, semi-plan, apochromatic and phase contrast objectives for biological, metallurgical and fluorescence applications. Objectives are available in fixed magnifications from 2X to 100X and are compatible with Olympus microscope systems. They feature RMS 20.2mm or 95mm mounting threads, parfocal lengths of 45mm or 60mm, and are designed for use with transmitted, reflected or fluorescence illumination.
Every Microscope Objective In Stock
All 16 items in this category, listed in full.
195 Plan Infinity Objective Black Compatibale for Olympus Microscope
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195 Plan Infinity Achromatic Objectives Compatiable for Olympus Microscopes
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195 PLAN Biological Microscope Objective Lens Frosted 20.2mm RMS Thread
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195 Semi-plan Achromatic Objective Lens for Biological Microscope
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185 Metal Copper Achromatic Optical Microscope Objective Lens
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195 Achromatic Microscope Objective Lens RMS 20.2mm
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195EA 4X 10X 20X 40X 60X 100X Achromatic Microscope Objective Lens
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Plan Infinite/Finite Biologocal Phase Contrast Objective
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Parfocal Length 45mm Plan Infinite Biological Objective
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Parfocal Length 60mm Plan Infinite Biological Objective
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NIS 60mm Bright/Brightdark Apochromatic Metallographic Objective
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F180 Inverted Fluorescent Semiapochromat Biological Phase Contrast Objective
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F=180 Bright and Dark Field Semiapochromat Metallurgical Microscope Objective
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F=180 Bright/Dark Field Semiapochromat/Apochromatic Metallurgical Microscope Objective
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95mm APO LWD Metallographic Objective Lens Wavelength 400-1100NM
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2X 5X 10X 20X 50X 100X 95mm M Plan APO Microscope Objective
View DetailsWhat Goes Wrong Without the Right Microscope Objective
- A mismatched objective causes focus shift between magnifications, requiring frequent refocusing during inspection
- Using a non-parfocal objective disrupts workflow when switching between low and high power views
- An objective without proper correction for chromatic or spherical aberration reduces image clarity on fine details
- Incompatible thread size prevents mounting on existing microscope stands, requiring a new stand or adapter
- Lack of phase contrast or dark field capability limits inspection of transparent or low-contrast samples
Who Buys From This Category
- Electronics manufacturers inspecting PCBs, SMD components and BGA joints under high magnification
- Metallurgy labs examining grain structure, surface defects and heat-treated microstructures
- Research and teaching labs performing biological specimen analysis with phase contrast or fluorescence
- Jewellery and watchmaking workshops inspecting fine engravings and gem settings
- Quality control teams using inverted or metallurgical microscopes for surface and coating analysis
Why These Items
- Plan infinity and apochromatic objectives reduce chromatic and spherical aberration for sharper, more accurate images
- Parfocal lengths of 45mm and 60mm ensure focus remains stable when switching between magnifications
- RMS 20.2mm and 95mm thread standards allow direct mounting on compatible Olympus and other microscope stands
- Available in phase contrast, bright/dark field and fluorescence modes to enhance contrast on transparent or low-contrast samples
- Compatibility with existing microscope systems avoids the need to replace entire stands or imaging chains
Where These Are Used
- Inspecting a solder joint on a PCB using a 40X achromatic objective with transmitted light
- Examining grain boundaries in a heat-treated steel sample with a 100X apochromatic metallurgical objective
- Viewing unstained biological cells with phase contrast using a 20X plan infinity objective
- Checking surface finish on a machined component under dark field illumination with a 50X objective
- Analyzing a diamond's internal structure using a 10X APO LWD objective with 400-1100NM wavelength range
Before You Order
- Confirm the thread size (RMS 20.2mm or 95mm) matches your microscope stand's nosepiece
- Check the parfocal length (45mm or 60mm) to ensure compatibility with your stand's focus mechanism
- Select phase contrast or dark field objectives only if your microscope has the required condenser and filter turret
- Ensure the objective's magnification and numerical aperture match the required resolution for your inspection task
- Verify that the objective is compatible with your illumination type (transmitted, reflected, fluorescence)
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Frequently Asked Questions
Will this objective fit my microscope stand?
It fits if the thread size matches your stand's nosepiece. Most models use RMS 20.2mm or 95mm. Check your stand's specifications or send us the model number for confirmation.
What is the difference between plan infinity and finite objectives?
Plan infinity objectives are designed for use with infinity-corrected optical systems, which provide better image quality and compatibility with cameras and filters. Finite objectives are for older systems with fixed tube length.
Do I need a special condenser for phase contrast objectives?
Yes. Phase contrast objectives require a phase contrast condenser with matching phase rings and a phase ring in the objective to produce contrast in transparent samples.
Can I use a metallurgical objective on a biological microscope?
Only if the microscope has a reflected light port and the objective's mounting thread matches the nosepiece. Metallurgical objectives are designed for reflected light and are not suitable for transmitted light applications.
What does 'APO' mean in an objective name?
APO stands for apochromatic, meaning the objective corrects for chromatic and spherical aberration across multiple wavelengths, providing higher resolution and color accuracy.
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