OMAX 63X PLAN 0.85 DIN 160/0.17 Microscope Objective - Achromatic 63X

In this review of the OMAX 63X PLAN 0.85 DIN 160/0.17 objective, the bottom line is simple: it is a focused, practical upgrade for hobbyists and students who need a highmagnification achromatic lens that fits common compound microscopes. The reviewer found the objective to deliver crisp 63X views with a true plan correction that keeps fields flatter than entrylevel objectives, and appreciated the spring loaded mount that protects both the lens and slides during routine work. This lens is best for biological and educational use where durability and compatibility matter.

Key Features

• 63X magnification: Provides strong detail for cellular and smallorganism observation without the complexity of oil immersion.
• Plan correction: Keeps the central and peripheral field more uniformly sharp so stitched fields and measurements are easier to interpret.
• NA 0.85: Offers a high numerical aperture for good resolution and light gathering in brightfield and stained samples.
• DIN 160/0.17 standard: Designed to match microscope tubes and coverglass thickness standards for predictable focus and parfocal behavior.
• Spring loaded mount: Protects the front lens element and slides from accidental contact during focusing or turret rotation.
• 20mm thread mount: Fits microscopes that accept the common 20mm threaded objective size for straightforward installation.

Who It's For

This objective suits students, hobbyists, and lab technicians using compound or biological microscopes who need a reliable 63X option with improved flatness across the field compared with simple achromats. It is also appropriate for classroom setups where durability and ease of use matter because the spring loaded design reduces the risk of damaged slides or lens contact.

It is less suitable for professional imaging labs that require oil immersion, apochromatic color correction, or specialized objectives with nonstandard mounts. Buyers who need immersion or the absolute highest color fidelity should look at objectives specifically labeled for those uses.

Pros & Cons

Pros

• Good optical performance at 63X with plan correction for flatter field imaging.
• High numerical aperture (0.85) helps resolve finer detail and improves brightness.
• Spring loaded mount adds protection for both slides and the lens during normal handling.
• Standard DIN 160/0.17 and 20mm thread increase compatibility across many compound microscopes.

Cons

• Achromatic design means some residual color fringing remains compared with apochromatic objectives.
• Not an oil immersion objective, so maximum resolution potential for very high NA work is limited.

Specifications

Brand	OMAX
Magnification	63X
Optical type	Achromatic Plan
Numerical aperture (NA)	0.85
Tube standard	DIN 160/0.17
Mount/thread size	20mm thread
Protection	Spring loaded front to protect lens and slides

Our Verdict

The OMAX 63X PLAN 0.85 DIN 160/0.17 objective is a sensible, costconscious choice for classroom, hobby, and routine laboratory microscopy. It delivers noticeably flatter fields and strong resolution for 63X work while the spring loaded mount and standard sizing make it easy to fit into existing setups. Those who require immersion or the ultimate in color correction should consider specialized alternatives, but for most biological observation this lens is good value.

Frequently Asked Questions

Will this objective fit my compound microscope?
It fits microscopes that accept a 20mm threaded objective and follow the DIN 160/0.17 tube standard, which covers many common compound and biological microscopes.

Is this objective oil immersion?
No, this is a dry achromatic plan objective rated for standard coverglass thickness; it is not designed for oil immersion use.

Does the spring loaded feature protect slides effectively?
Yes, the spring loaded mount helps prevent direct contact between the front element and slides during focusing or turret changes, reducing the risk of damage.