195EA 4X 10X 20X 40X 60X 100X Achromatic Microscope Objective Lens
The 195EA is a set of six achromatic microscope objective lenses with magnifications from 4X to 100X, designed for use with biological and general-purpose microscopes.

Product Overview
The 195EA is a set of six achromatic microscope objective lenses with magnifications from 4X to 100X, designed for use with biological and general-purpose microscopes. Each lens is mounted in a standard 25mm diameter barrel with a 160mm tube length and 0.17mm cover slip thickness correction. The lenses are intended for routine inspection, teaching, and laboratory work where consistent resolution and colour correction are required.
- Magnification4X, 10X, 20X, 40X, 60X, 100X
- Optical designAchromatic
- Mounting typeScrew-in
- CorrectionAchromatic
- ApplicationBiological, general-purpose microscopy
- Illumination typeTransmitted light
Key Benefits
- Six magnifications from 4X to 100X in a single set, reducing the need to order lenses separately
- Achromatic correction reduces chromatic aberration at the primary wavelengths, improving image clarity
- Standard 25mm barrel diameter and 160mm tube length ensure compatibility with most biological microscopes
- 0.17mm cover slip thickness correction allows use with standard glass slides
- No moving parts or adjustment mechanisms, so the lens remains stable during long observation sessions
Application Scenarios
- Routine inspection of tissue sections, blood smears and histological slides in a teaching or clinical lab
- Classroom demonstrations where students switch between magnifications without changing the microscope setup
- Quality control checks on manufactured parts with surface features visible at 4X to 40X
- Microscopy work in a university lab where multiple users need access to a consistent set of magnifications
- Replacement of worn or damaged objectives in a microscope that uses standard 25mm barrel lenses
Who It Is For
- Teaching laboratories in schools and universities requiring a standard set of objectives
- Clinical and veterinary labs performing routine slide inspections
- Quality control departments in manufacturing using light microscopy for surface inspection
- Research labs needing a reliable, non-adjustable set of objectives for consistent imaging
- Microscope users who need to replace or supplement existing objectives without changing the optical path
Problems It Solves
- A missing or damaged objective forces a lab to pause inspection or rework without a replacement
- Using mismatched objectives with different tube lengths or cover slip corrections causes focus drift and image distortion
- Requiring multiple separate orders for 4X, 10X, 20X, 40X, 60X and 100X lenses increases procurement complexity
- Lack of achromatic correction leads to colour fringing at the edges of features, reducing image accuracy
- Non-standard barrel sizes prevent mounting on existing microscope nosepieces or holders
Technical Features
- Achromatic optical design corrects for chromatic aberration at primary wavelengths
- Magnifications: 4X, 10X, 20X, 40X, 60X, 100X
- Standard 25mm barrel diameter for compatibility with most microscope nosepieces
- 160mm tube length for use with infinity-corrected and finite optical systems
- 0.17mm cover slip thickness correction for use with standard glass slides
- No mechanical adjustments or moving parts, so the lens remains fixed in position
- Designed for use with transmitted light illumination in biological and general-purpose microscopes
Specifications
| Magnification | 4X, 10X, 20X, 40X, 60X, 100X |
|---|---|
| Optical design | Achromatic |
| Mounting type | Screw-in |
| Correction | Achromatic |
| Application | Biological, general-purpose microscopy |
| Illumination type | Transmitted light |
Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.
Customization Options
- Available as a complete set of six lenses in a single package
- Can be supplied individually upon request
- No options for alternative magnifications, tube lengths or barrel sizes beyond the listed specifications
Comparison With Other Options
| 195EA with only 4X, 10X, 40X, 100X objectives | The full 4X to 100X set includes 20X and 60X lenses, which are useful for intermediate magnification steps not covered in the partial set. |
|---|---|
| Infinity-corrected objectives | The 195EA is designed for finite tube length systems; infinity-corrected objectives require a tube lens and are not interchangeable. |
| Fluorescence objectives | The 195EA is not designed for fluorescence; it lacks the necessary coatings and correction for excitation and emission wavelengths. |
Use Guide
- Ensure the microscope's tube length is 160mm before mounting the lens
- Align the lens with the nosepiece and screw it in until snug; do not over-tighten
- Use with standard 0.17mm cover slip thickness slides for optimal focus
- Clean the lens surface with lens paper and cleaning fluid before use; avoid touching the glass
- Do not expose the lens to high humidity or extreme temperature changes to prevent coating damage
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View DetailsFrequently Asked Questions
What magnifications are included in the 195EA set?
The set includes 4X, 10X, 20X, 40X, 60X, and 100X objectives.
Is this lens compatible with my microscope?
Yes, if your microscope has a 25mm barrel nosepiece and a 160mm tube length. Confirm the tube length and barrel size before use.
Can I use this lens with a cover slip thicker than 0.17mm?
Using a thicker cover slip will cause focus shift and image blur. Use standard 0.17mm cover slips for best results.
Are these objectives suitable for fluorescence microscopy?
No. These are achromatic biological objectives for transmitted light only. They are not designed for fluorescence excitation or emission.
Do the lenses come with a protective cap?
Yes, each lens includes a protective cap to prevent dust and damage during storage and transport.
Can I order individual lenses from this set?
Yes. The lenses are available individually upon request. Specify the magnification needed when placing your order.
Request A Price On The 195EA 4X 10X 20X 40X 60X 100X Achromatic Microscope Objective Lens
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