Contact lens cleaning apparatus

Contact lens cleansing apparatus comprising at least one cavity for containing at least one contact lens together with cleansing liquid, an ultrasonic transducer for applying ultrasonic frequency mechanical vibrations to the liquid and lens contained in the cavity, oscillating means for driving the ultrasonic transducer, said oscillating means including a dual ferrite core transformer feedback circuit for providing a substantially stable resonant frequency to the ultrasonic transducer means substantially independently of the nature of the lens and cleansing liquid physical characteristic.

Apparatus for simultaneously cleaning and sterilizing a contact lens comprising at least one cavity for containing said contact lens together with a contact lens cleansing liquid or saline solution, an ultrasonic transducer for applying ultrasonic frequency mechanical vibrations to the liquid and the lens contained in the cavity thereby to clean the lens, oscillating means for driving the ultrasonic transducer at a substantially stable resonant frequency, such oscillating means including a dual ferrite core transformer feedback circuit to provide such stabilized resonant frequency, and a timer for energizing the oscillating means for a predetermined period of time for simultaneous cleaning and sterilization of the lens.

Contact lens cleansing apparatus comprising at least one cavity for containing at least one contact lens together with saline solution, an ultrasonic transducer for applying ultrasonic frequency mechanical vibrations to the liquid and the lens contained in the cavity thereby to clean the lens, oscillating means including a dual ferrite core transformer feedback circuit for providing a substantially stable resonant frequency to the ultrasonic transducer, whereby bacteria and virus may be substantially destroyed by said vibrations in said saline solution.