Olympus Plan N 40X/0.65 Objective | BX40, BX41 & BX-Series Replacement
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Olympus Plan N 40X/0.65 Replacement Microscope Objective for BX40 and BX-Series
Replace a damaged, contaminated or missing 40X objective on a compatible Olympus BX-series compound microscope with this genuine Olympus Plan N 40X/0.65 objective (part number 1-U2B227). This pre-owned objective is described as being in excellent condition and producing a good image. It is a practical spare for laboratories that rely on routine brightfield microscopy.
Key Features
- Olympus Plan N 40X objective with numerical aperture 0.65
- Infinity-corrected optical marking: β/0.17/FN22
- Olympus part number 1-U2B227
- Designed for use with a 0.17 mm coverslip
- Suitable for routine brightfield viewing of prepared microscope slides in compatible systems
- Useful as a replacement or spare when a 40X objective is damaged or contaminated
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Olympus |
| Objective series | Plan N |
| Magnification | 40X |
| Numerical aperture | 0.65 |
| Optical correction | Infinity (β) |
| Coverslip thickness | 0.17 mm |
| Field number marking | FN22 |
| Olympus part number | 1-U2B227 |
| Condition | Pre-owned; described as excellent, producing a good image |
Olympus Microscope Compatibility
The original listing identifies the following Olympus BX-series microscope models as compatible: BX40, BX41, BX45, BX50, BX51, BX61, BX43, BX53 and BX63. Compatibility should be confirmed against your existing objective markings, optical system and microscope configuration before ordering. Contact our team with a photo of your existing objective if you are unsure.
Common Applications
Pathology and histology: Detailed brightfield examination of stained tissue sections.
Clinical and research laboratories: Routine examination of prepared microscope slides requiring 40X objective magnification.
Microscope repair and maintenance: Replace an objective with damaged optics, poor image quality or stubborn contamination.
Why Keep a Spare 40X Objective?
A 40X objective can become contaminated when immersion oil is accidentally transferred from a nearby 100X oil-immersion objective. If cleaning requires professional service, having a compatible spare can help reduce microscope downtime. Avoid aggressive cleaning methods that could damage optical coatings or the objective assembly.
Frequently Asked Questions
Will this 40X objective fit my Olympus BX40 microscope?
The original listing specifies compatibility with the Olympus BX40 and several other BX-series models. Please verify your microscope's optical configuration and current objective markings before ordering.
Is this a 40X oil immersion objective?
This listing is for an Olympus Plan N 40X/0.65 objective marked β/0.17/FN22, not an oil-immersion objective. Avoid applying immersion oil unless the specific objective is expressly marked for oil use.
What does 40X/0.65 mean?
40X is the objective's magnification; 0.65 is its numerical aperture, an optical parameter related to light collection and resolution.
Is this objective new?
No. The source listing describes a pre-owned Olympus objective in excellent condition that produces a good image.
Can you help verify compatibility?
Yes. Share your microscope model and the markings on your current objective with the Microscope Marketplace team.
Related Olympus Microscope Parts
Browse Olympus microscope objectives or Olympus BX40 microscopes and replacement parts. For assistance selecting the correct objective, contact Microscope Marketplace at 919-775-5596.
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