Zeiss Humphrey 350 Lensmeter

Spectacles: single, bifocal, trifocal, aphakic, and progressive addition lenses

Contacts: hard and soft

Tints and Coatings: scratch resistant. UV and anti-reflective coatings and tints down to 5% luminous transmittance

Refractive materials: all commercially available

Lens diameter: 7mm to 100mm

High Index Correction: corrects calibration for high-index materials due to dispersion difference in response to operator input of appropriate Abbé value

Performance

Sphere: -20D to +20D

Increments: .01D, .12D, .25D

Cylinder: -20D to +20D

Increments: .01D, .12D, .25D

Axis: 1° to 180°

Increments: 1°

Prism: -15D to +15D

Increments: .01D, .12D, .25D

PD: 0 to 90mm

Increments: .5mm

Operator Interface: Output

Video Display: 9° diagonal, white phosphor CRT

- Resolution: 640 x 480 pixels

- 16 level grayscale

Paper size: 58 mm thermal paper

Audible prompts and indicators

Operator Interface: Input

Function buttons

Foot Switch for STORE function

STORE button

Light source: wavelength: 660nm

- Type: LED

- Measurement pattern size: 5mm

- (or diagonal): 3.5 mm (contact lens/PAL)

Operating conditions: +10°C to +40°C, 20% to 90% relative humidity

Storage conditions: -40°C to +70°C, 0% to 90% relative humidity (non-condensing)

Electrical

Line voltage: 100 to 240V AC

Frequency: 47 to 63 single phase

Power: 100V

Fuse rating: 3A fast Blow, 250V, 5 x 20mm

Current leakage: Less than 100µA at 120V

Interfaces

Two RS-232 serial communication ports

Selectable baud rate: 300 to 19.2K

Discontinued by Carl Zeiss Meditec in 2004, the Humphrey Lens Analyzer is still considered by many as the best auto lensometer ever made. Sought after by lens manufacturing labs due to its durability and accuracy. Automatic calculation of mono and binocular PD without centering. Excellent with progressives and high index materials. Connects with Humphrey HARK 599 ARK to automatically set up corrected acuity comparison with patients present glasses.