Details

Weight 30.0000 lbs The Used Zeiss Humphrey LA-350 Auto Lensometer Features: Automatically Calculated Monocular and Binocular Spectacle PD Prescriptions with Prism, Contact Lenses, Polycarbonate or other High-Index Materials Lens Neutralization for Progressive Lenses Icon-Based Interface Continuous Feedback Range of Applicability to Lens Types 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