198097 ⎘
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor; Heads, e.g. forming of the optical beam spot or modulation of the optical beam; Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides the waveguides including means for electro-optical or acousto-optical deflection