
( Brand: Nikon ), ( Manufacturer Part Number: 320056 ), ( Part Type: Len ), ( Country Of Origin: Japan )
The **Nikon 320056 BD Plan 40x/0.65 210/0 microscope objective lens** is a high-performance optical component designed for precision imaging in both educational and professional microscopy applications. Part of Nikon s renowned BD Plan series, this objective lens delivers exceptional clarity, contrast, and resolution, making it an ideal choice for routine and advanced light microscopy tasks. With a **40x magnification** and a **numerical aperture (NA) of 0.65**, this lens strikes an excellent balance between high magnification and a broad field of view, allowing users to observe fine cellular structures, tissue samples, and microscopic organisms with remarkable detail. The **210/0.17 working distance** ensures ample space for sample manipulation, reducing the risk of accidental damage to delicate specimens while maintaining optimal focus. Engineered with Nikon s advanced **BD Plan Fluorite** glass elements, this objective minimizes chromatic and spherical aberrations, producing sharp, distortion-free images across the entire field of view. The **parfocal design** ensures seamless transition between different magnification lenses, enhancing workflow efficiency, while its **corrected infinity-corrected optical path** aligns perfectly with Nikon s infinity-corrected microscope systems, delivering consistent performance. Whether used in histology, cell biology, or materials science, this objective lens excels in applications requiring both precision and reliability, making it a versatile addition to any microscopy setup. Built to rigorous standards, it combines durability with optical excellence, ensuring long-term performance for researchers, educators, and professionals who demand the highest standards in microscopic imaging.
### **Pros and Cons of buying a Nikon 320056 BD Plan 40x 0.65/0.210 Objective Lens**
#### **Pros**
1. **High-Quality Optical Performance** The BD (Bright Dark) series is known for its superior contrast and resolution, making it ideal for bright-field microscopy. The 40x magnification provides a good balance between detail and field of view, suitable for detailed cellular and tissue analysis.
2. **Corrected for Common Aberrations** This objective is designed to minimize spherical and chromatic aberrations, ensuring sharper and more accurate imaging across the visible spectrum. This is particularly useful for fluorescence and phase-contrast applications when used with compatible systems.
3. **Compatibility with Nikon Microscopes** As a Nikon part, it integrates seamlessly with Nikon microscopes, ensuring optimal performance with minimal adjustments. It is part of the Plan Apo series, which is known for its flat-field correction, reducing distortion at the edges of the field of view.
4. **Durability and Precision Engineering** Nikon objectives are built to last, with high-quality glass and precise mechanical tolerances. The 0.65 numerical aperture (NA) indicates a relatively high light-gathering ability, which is beneficial for low-light conditions.
5. **Versatility in Research and Education** The 40x magnification is widely used in biological, medical, and materials science research. It is also suitable for educational settings where detailed cellular structures need to be observed.
6. **Long Working Distance (0.210 mm)** The long working distance allows for the use of thicker coverslips or immersion in certain media without risking damage to the objective or specimen.
7. **Backward and Forward Compatibility** While designed for Nikon systems, it may work with some third-party microscopes if proper alignment and adapter rings are used, though performance may vary.
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#### **Cons**
1. **High Cost** Nikon objectives, especially high-quality ones like this BD Plan 40x, are expensive. The price may be prohibitive for budget-conscious buyers or those not heavily invested in Nikon systems.
2. **Limited Availability of Replacements** If the lens becomes damaged or fails, finding an exact replacement may be difficult, especially if the microscope is no longer in production.
3. **Specialized Use Case** While versatile, this objective is optimized for bright-field microscopy. If you require fluorescence, phase contrast, or differential interference contrast (DIC), you may need additional components or objectives, increasing costs.
4. **Requires Proper Maintenance** Like all high-end optics, this lens demands careful handling to avoid scratches or contamination. Improper cleaning or storage can degrade performance over time.
5. **Not Ideal for Ultra-High Magnification Work** At 40x, it is not suitable for extremely fine details that would require higher magnification objectives (e.g., 60x or 100x). For such work, additional lenses would be needed.
6. **Potential for Overkill for Basic Use** If you are primarily doing low-magnification or general observations, a lower-cost objective (e.g., 10x or 20x) may suffice, making this purchase unnecessary.
7. **Compatibility Issues with Non-Nikon Systems** While some third-party microscopes may accommodate it with adapters, performance may not match Nikon s optimized systems, and alignment issues could arise.
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### **Conclusion**
The **Nikon 320056 BD Plan 40x 0.65/0.210 objective lens** is a high-performance, precision optical component that excels in bright-field microscopy, offering superior image quality, corrected aberrations, and durability. It is an excellent choice for researchers, educators, and professionals who rely on Nikon microscopes and require detailed, high-contrast imaging at 40x magnification. However, its high cost, specialized nature, and potential compatibility limitations with non-Nikon systems must be carefully considered before purchase.
If you are already invested in Nikon microscopy, this lens is a worthwhile investment for its reliability and optical performance. For those on a tighter budget or with simpler microscopy needs, a lower-cost alternative may be more practical. Additionally, if your workflow involves fluorescence or other advanced techniques, ensure compatibility with your existing setup or budget for complementary objectives.
### **Recommendation**
- **Buy if:** You are using a Nikon microscope, require high-quality bright-field imaging at 40x, and prioritize long-term durability and optical precision. It is particularly suitable for biological research, medical diagnostics, or educational settings where detailed cellular imaging is critical.
- **Consider alternatives if:** You are working with a limited budget, need lower magnification, or require objectives for specialized techniques (e.g., fluorescence) that may not be fully compatible with this lens. In such cases, evaluate lower-cost objectives or explore used market options carefully.
- **Verify compatibility:** Ensure your microscope s body and condenser are compatible with this objective, and confirm that your intended applications align with its design (e.g., bright-field work). If in doubt, consult Nikon s technical support or a microscopy specialist.
Objective Magnification: 40x. Microscope Type BD Plan: Bright or Dark Field. Numerical Aperture NA: 0.65. Condition: Used in great condition.
Nikon BD Plan 40X, 0.65, 210/0, Microscope Objective Lens Great Condition. Storage container included. Gently used with Clean Optics. Features: BD Plan.
Nikon #320056.