Upright Microscope CX23
User-friendly Microscope for the Classroom
Focused on improving workflow for educational microscopy, the CX23 Upright Microscope requires minimal setup.


Designed to Improve Educational Microscopy Workflow
Built with students in mind, the CX23 microscope is not only durable but also reliable. It is easy to carry around the classroom because of these design elements:
- Small footprint
- Lightweight
- Ergonomic non-slip carrying grips
Safety features help ensure that the eyepieces, observation tube, objectives, and stage are protected from damage while it is transported or during prolonged and repeated use.

Outstanding Optical Performance
Uniform LED illumination with consistent color temperature provides vivid colors for all sample types. Economically, the LED lamp is advantageous for its 20,000-hour long lifetime and low power consumption.
The CX23 microscope also provides large field number (FN) of 20, offering a wider field of view. Its specially designed plan achromat objectives help ensure a flat image throughout the field of view.
Easy to Carry
The CX23 microscope is one of the lightest among analogous use microscopes*, weighing approximately 5.9 kg (13.01 lb). The non-slip carrying grips and v-shaped handle enable the user to comfortably and safely carry the microscope. The observation tube and eyepieces are secured to the microscope to limit damage and/or loss while it is being moved.
*As of Sep. 2019, According to Olympus research.
Observation with Comfort
The CX23 microscope is designed to support comfortable observation. Easily adjust the interpupillary distance and eyepoint height to their own comfort and the left and right diopters for appropriate focus for each eye. The locking pin keeps the observation tube in place while use.
Comfort Specimen Manipulation
The CX23 microscope eases specimen handling and the related setting adjustments, owing to its user-oriented design features:
- Inward-facing rotating nosepiece, enabling easier access to stage, so you can quickly change specimens and easily apply immersion oil if needed
- Plan achromat objectives with a long working distance, providing better clearance for thick samples and slides
- Coaxial knobs, which can be easily accessed from either side of the microscope, for quick fine or coarse focusing adjustments
Prevent Microscope / Specimen Damage
To protect the microscope and specimen, the CX23 is equipped with damage-proofing mechanisms:
- The focus lock helps prevent the objectives from damaging the specimen.
- The torque release function protects the coarse focusing knob and stage knob against excess force.
Easy Storage
Storing your CX23 microscope is facilitated by these practical features:
- Storage compartment located on the back of the microscope for stowing the power cable and AC adaptor
- Built-in security slot for attaching an anti-theft cable
Improve Your Training Efficiency With a Digital Camera
Share what you are viewing on the CX23 microscope with your classroom/audience, using a digital camera. The trinocular observation tube of the CX23 can be equipped with a digital camera for easy image capturing and recording
Basic Training with Köhler Illumination
The CX23 microscope can be equipped with a field stop diaphragm (CX23-FS). Enabling the user to perform and teach Köhler illumination, CX23 supports the basic training for microscopy.
Anti-Fungal Treatment
Microscopes can be vulnerable to mold and other fungi when used in hot, humid environment, so the CX23 microscope’s objectives, eyepieces, and observation tube have all undergone anti-fungal treatment, helping ensure optimal viewing and greater durability.
Microscope CX23 Specification
Model | CX23LEDRF (S1/S2) | CX23RTFS2 | |
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Body | Aluminum die-cast metal frame, protective plastic covering | ||
Optical System | Infinity Optical System | ||
Illumination System | Built-in transmitted illumination system LED Power consumption: 0.5 W (nominal value) | ||
Focusing |
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Revolving Nosepiece | Fixed quadruple nosepiece with inward tilt | ||
Stage | Wire movement mechanical fixed stage
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Observation Tube | Type | Binocular anti-fungal | Trinocular anti-fungal |
Eyepiece (anti-fungal) |
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Tube Inclination | 30° | ||
Light Path Selector | None | Eyepiece/Camera port = 100/0 or 0/100 | |
Interpupillary distance adjusting range | 48 – 75 mm (1.9 in. – 3 in.) | ||
Eyepoint adjustment | 370.0 – 432.9 mm (14.6 in. – 17 in.) | ||
Condenser |
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Objectives | Plan Achromat, anti fungal
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Optional Accessories |
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Dimensions (W × D × H) | 198 mm × 398 mm × 386 mm (78 in. × 15.7 in. × 15.2 in.) | 198 mm × 398 mm × 430 mm (78 in. × 15.7 in. × 17 in.) | |
Weight | Approximately 5.9 kg (13 lb) | Approximately 6.5 kg (14.3 lb) | |
Rated Voltage/Electric Current | AC 100 – 240 V, 50/60 Hz, 0.4 A | ||
Power Consumption | Less than 2 W |