Computerized Lensmeter CL-300
Computerized Lensmeter CL-300
Touch Screen Panel
UV Transmittance Measurement
Compact Slim Body

With a new UV Measurement Function, the CL-300 provides  comprehensive data to both eyeglass wearers and optometrists. Its compact, ergonomic design and intuitive touch screen panel ensures that measurements can be easily and quickly obtained.


Touch Panel

  • LCD Touch Panel
  • Compact Slim Body
  • Automatic Mono- & Multi-focal Detection
  • UV Transmittance Measurement
  • Green Measurement Light Beam

Smart & Smooth Operation

The large, newly designed color LCD monitor with a 5.7-inch touch panel simplifies the interpretation of readings even with progressive and multi-focal lenses. The dynamic color measuring graphics follow the measuring process and present each step of the operation with different color, providing better control and ease of use.
Color LCD monitor

1: Smooth lens table support enables easy
placement of eyeglasses

3: The “ALIGNMENT OK” is displayed
when the target ( + ) comes within the
circle. When BEEP function is ON, the
buzzer will sound.
2: Right after the lens is placed, the optical
center (+) appears with the “BLUE” bar.

4: The measured data is memorized
automatically with the “ MARKING OK
when the target is aligned in the exact
center (at 0Δ).
In order to do marking, place down the lens
retainer to secure the lens and marking is
stamped accurately with the equipped
marking cartridge.

CL-300 Features

UV Transmittance
Measurement Function

UV Transmittance Measurement Function

The CL-300’s new UV Measurement Function provides
information on the ultraviolet transmittance in the range
of 0% to 100%, providing reliable measurement results
to both eyeglass and sunglass wearers.

* UV Transmittance Measurement is performed with the light beam of 365 nm wavelength.

Multi-focal Lens Measurement

Multi focal Lens

Not only single lenses but also multifocal lenses can be easily measured. The CL-300 also features automatic detection for single and progressive lenses.

Progressive Lens Measurement

The image shows a near point measurement screen. With simple operation, the ADD value can be obtained by following the guide instructed on this progressive measuring mode.

Green Light Beam

Green Light Beam

The CL-300 incorporates the green light reading beam, which is also known as e-line. Due to the wavelength of 546 nm, the e-line can be well-sensed by the human’s eye and it is determined as a standard by ISO 7944. Using green light beam in our instrument enhances lens measurement precision and reduces the chance of error in the measurements

Improved Lens Support

Due to its new design, the lens support of the CL-300 is 6 mm more in height compared to the conventional model. This change enables smooth and trouble-free measurement of high-curve lenses, preventing from troublesome contact of the lens edge with external parts of the lens support.

Improved Lens Support
Large 5.7 inch LCD
Monitor with Wider
Directional Angle

The wide LCD monitor covers a 160 degree angle of observation allowing clear, compatible readings from virtually any position regardless of the operator’s height.

160 degree angle
White Ink
Cartridge Standard

The newly featured white marking ink provides clear marking even on lenses with anti-staining and anti-fog coating. Due to these favorable qualities, TOPCON made the white marking ink standard in the new CL-300.

white ink cartridge

* For availability in your region and other details please refer to the local TOPCON authorized representative


Contact Lens Measurement

Contact lenses can be easily measured using the CL-300 lens support and ring accessories that come standard with the instrument.

contact lens measurement

Fast, Easy to Load Printer

Loading the thermal paper into the printer has never been easier. Just drop the printer paper into the receptacle and close the cover. The quick and quiet printer is ready to go. This improvement saves time and enhances workflow.

fast, easy to load printer

Printout Sample

printout sample

System chart

system chart

Contact Topcon subsidiaries or dealers for system configurations.


Models CL-300 CL-300PDL
PD measurement included
Printer included included
LAN included


Measurement Range Sphere 0 to ±25 D (0.01/0.12/0.25D steps)
Cylinder 0 to ±10 D (0.01/0.12/0.25D steps)
Axis 0 to 180°(1°step)
Addition 0 to + 10D (0.01/0.12/0.25D steps)
Prism 0 to 13△ (horizontal), 0 to 18△ (vertical)
Cylinder Mode MIX / - / +
Prism Mode X-Y (Orthogonal Coordinates), P-B (Polar Coordinates
UV Transmittance 0 ~ 100%(1% / 5% steps)
Lens Detection AUTO for single & progressive lenses
Contact Lens Measurement Hard / Soft contact lens
Wavelenth Criterion e-line/d-line with ABBE compensation
Lens Diameter φ5 to 100 mm
Screen 5.7 inch color TFT-LCD touch screen
PD Measurement Range* 50-90mm
External Interface RS-232C × 2, USB(A)× 1, LAN × 1 *
Power Supply 100-240V / 50/60Hz 1.2A (AC Adapter) : AUTO power save
Dimensions 197(W) × 220(D) ×404(H) mm
Weight 3.8Kg
*CL-300PDL model only