The TL-3000C serves optical practices, dispensing counters, glazing workshops and hospital eye clinics that measure spectacles and contact lenses. Dispensing opticians, optometrists, optical assistants, and glazing technicians use it to read prescriptions in existing glasses, measure new spectacles before collection, and record a patient's PD. Contact lens practitioners use the Auto CL mode for hard and soft lenses.
Detection shapes the routine. A progressive lens is recognised without a separate selection, PD mode sorts right from left on its own, and the contact lens nosepiece switches the instrument into Auto CL mode. A dispenser can therefore move from a pair of varifocals to a contact lens and back with fewer steps, and the shortcut menu on the touch panel keeps the functions a practice uses most within one press.
UV transmittance at 385 nm appears as a bar graph beside the power reading, so the patient can see the result on the colour screen during dispensing. For high-index lenses, the Abbe number ranges from 30 to 65, and prism can be read in rectangular or polar form,m or as displacement from the optical centre. Total prism is displayed as well.
Records leave the instrument in three ways: on the built-in thermal printer, through memory for up to 99 measurements, or over RS-232C or USB to a practice computer. The marking unit dots the optical centre once the lens table locks into place. The instrument uses ink from a marking cartridge and runs on 230 V, 50/60 Hz at 55 VA.