Olympus Upright Microscope CX23

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.

Field Number (FN) of 20

Low Power Consumption

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.

Angled Arm Enables Comfortable Carrying

Non-slip carrying grips and v-shaped handle

Fixed Eyepieces Prevent Damage or Loss

Rackless Stage for Safety and Durability

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.

Eyepoint Height Adjustment

Interpupillary Adjustment

Safety and Smoother Focusing

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.

Inward-Facing Revolving Nosepiece

Coaxial Knobs

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

Cable Storage Compartment

AC adapter compartment and buit-in security slot

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.

Model CX23LEDRF (S1/S2) CX23RTFS2
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 • Stage height movement
• Coarse movement stroke: 15 mm (0.6 in.)
• Coarse movement stroke: 15 mm (0.6 in.)
• Coarse adjustment limit stopper
• Torque adjustment for coarse adjustment knob
• Fine focus knob (mininum adjustment gradations: 2.5 µm)
Revolving Nosepiece Fixed quadruple nosepiece with inward tilt
Stage Wire movement mechanical fixed stage
• Size (W × D): 174 mm × 89 mm (6.9 in. × 3.5 in.) • Travelling range (X × Y): 76 mm × 30 mm (3 in. × 1.2 in.)
• Specimen holder • Specimen positioning scale
Observation Tube Type Binocular anti-fungal Trinocular anti-fungal
Eyepiece (anti-fungal) 10X Field Number (FN): 20 15X Eyepiece (FN): 12 (optional)
Tube Inclination
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.)
Condensor • Abbe condensor NA 1.25 with oil immersion
• Built-in aperture iris diaphragm
Objectives Plan Achromat, anti- fungal
4x NA 0.1 W.D. 27.8 mm
10X NA 0.25 W.D. 8.0 mm
20X NA 0.4 W.D. 2.5 mm (optional)
40X NA 0.65 W.D. 0.6 mm
100XOil NA 1.25 W.D. 0.13 mm (CX23LEDRFS1 built-in, CX23LEDRFS2/RTFS2 optional)
Optional Accessories Reflection mirror (CH20-MM), eyepiece micrometer Reflection mirror (CH20-MM), eyepiece micrometer
Dust cover, darkfield stop (CH2-DS + CH2-FH) Dust cover, darkfield filter (CH2-DS)
Field diaphragm (CX23-FS)
Dedicated wooden case (CH20-WB2)
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 (14.3 lb)
Rated Volatage/Electric Current AC 100V – 240V 50/60 Hz 0.4 A
Power Consumption Less than 2W