Abstract: A near field optical recording device for recording or reproducing information by making a near field light incident on a recording medium, in which an air induction channel is formed extended from an outside to a collective lens at a head slider where the collective lens is mounted facing near the surface of the recording medium. In an optical recording and reproducing, the temperature rise in the collective lens being close to the surface of the recording medium due to the heat energy generated by the light made incident on the surface of the recording medium can be restrained.

Abstract: A near field optical recording/reproducing head and a near field optical recording/reproducing apparatus using the head that are adaptive for writing an information onto a recording medium and reading out an information written on the recording medium by irradiating a near field light onto the recording medium and converting a near field light reflected the recording medium. In the near field optical recording/reproducing head, a first tip is floated by a minute height from the recording medium to focus an incident light onto the recording medium in a shape of near field light, and a second tip is floated by a minute height from the recording medium to convert a near field light reflected from the recording medium into an electrical signal. A mounting member supports the first and second tips with inclination and symmetrically. First and second minute displacement drivers move the first and second tips within a minute displacement in two-axis direction perpendicular to each other, respectively.

Abstract: A disc recording medium that is capable of being rotated at a high speed to improve an information transfer rate. The recording medium has a residual stress acting as a tensile force. An annular reinforcing member having a temperature coefficient different from the disc and adapted to be bonded to the disc is used in the recording medium.